CN116839146A - Purification device and method for manufacturing porous insulating medium - Google Patents
Purification device and method for manufacturing porous insulating medium Download PDFInfo
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- CN116839146A CN116839146A CN202310774642.6A CN202310774642A CN116839146A CN 116839146 A CN116839146 A CN 116839146A CN 202310774642 A CN202310774642 A CN 202310774642A CN 116839146 A CN116839146 A CN 116839146A
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- 238000000746 purification Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title description 19
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000003054 catalyst Substances 0.000 claims abstract description 54
- 239000011148 porous material Substances 0.000 claims abstract description 30
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims description 20
- 239000012018 catalyst precursor Substances 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000003463 adsorbent Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000001877 deodorizing effect Effects 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000011572 manganese Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical group [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000005373 porous glass Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000036470 plasma concentration Effects 0.000 abstract description 12
- 238000004887 air purification Methods 0.000 abstract description 8
- 150000002500 ions Chemical class 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 230000005684 electric field Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000003574 free electron Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000013557 residual solvent Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013048 microbiological method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
- C04B38/0025—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors starting from inorganic materials only, e.g. metal foam; Lanxide type products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0054—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity the pores being microsized or nanosized
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
- F24F8/98—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for removing ozone
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to the technical field of air purification equipment, and discloses a purification device and a manufacturing method of a porous insulating medium. Comprises a high voltage pole which is suitable for being connected with a power supply device; the grounding electrode is arranged opposite to the high-voltage electrode and is suitable for grounding, a first ventilation hole and a second ventilation hole are formed in the high-voltage electrode and the grounding electrode respectively, and the first ventilation hole and the second ventilation hole are communicated with each other; the porous insulating medium is arranged between the high-voltage electrode and the grounding electrode, an ozone removal catalyst is loaded on the porous insulating medium, the pore diameter of the porous insulating medium is d1, and d1 is more than or equal to 80 mu and less than or equal to 120 mu. The purification device can solve the problems that the porous ceramic medium of the ion body generation device in the prior art occupies the discharge area between the positive plate and the negative plate, is unfavorable for increasing the plasma concentration and prevents the improvement of the air purification effect. The device can increase the discharge area of the purification device, and is helpful for improving the plasma concentration and the air purification effect.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a purification device and a manufacturing method of a porous insulating medium.
Background
With the development of social economy, the demands of residents on house interior decoration are also increasing. The use of large-scale decoration materials and building materials leads the concentration of formaldehyde, TVOC and other pollutants in indoor air to exceed the standard, and has influence on the health of people. At present, the purification method of indoor air pollution comprises a ventilation method, a plant purification method, a microbiological method, a physical and chemical adsorption method, a plasma method and the like. The plasma generating device is widely used for plasma air disinfection because of the characteristics of no consumable and low wind resistance
However, the current plasma generating devices inevitably generate a large amount of ozone during use, and the concentration of the generated ozone is far greater than the safe concentration of ozone. In the prior art, a plasma generating device is proposed, which includes a positive electrode plate, a negative electrode plate disposed opposite to the positive electrode plate, and a porous ceramic medium disposed between the positive electrode plate and the negative electrode plate, on which a catalyst for suppressing ozone generation is supported. Although this type of plasma generator can reduce the amount of ozone generated, the discharge area between the positive electrode plate and the negative electrode plate is small, which is disadvantageous for increasing the plasma concentration and hinders the improvement of the air cleaning effect.
Disclosure of Invention
In view of the above, the present invention provides a purifying device and a method for manufacturing a porous insulating medium, so as to solve the problems of the prior art that the discharge area between the positive plate and the negative plate of the purifying device is small, which is not beneficial to increasing the plasma concentration and hinders the improvement of the air purifying effect.
In a first aspect, the present invention provides a purification apparatus comprising:
a high voltage pole adapted to be connected to a power supply;
the grounding electrode is arranged opposite to the high-voltage electrode and is suitable for grounding, a first ventilation hole and a second ventilation hole are formed in the high-voltage electrode and the grounding electrode respectively, and the first ventilation hole and the second ventilation hole are communicated with each other;
the porous insulating medium is arranged between the high-voltage electrode and the grounding electrode, an ozone removal catalyst is loaded on the porous insulating medium, the pore diameter of the porous insulating medium is d1, d1 is more than or equal to 80 mu m and less than or equal to 120 mu m.
The beneficial effects are that: the purification device of the invention is provided with a porous insulating medium between the high-voltage electrode and the grounding electrode, and a deodorizing catalyst is loaded on the porous insulating medium. When the pore diameter of the porous insulating medium is in the range of 80-120 mu m, a small amount of initial charged particles collide with gas atoms or molecules under the action of a strong electric field, and when the collision energy is large enough, bound electrons are separated from the gas atoms and become free electrons. Atoms after escaping electrons become positive ions, so that charged ions in the gas are proliferated to form current to pass through the gas, thereby micropore discharge and surface discharge can be generated in holes of the porous insulating medium, the plasma concentration is effectively increased, and the treatment efficiency of the purifying device for air to be purified is improved. The ozone removal catalyst loaded on the porous insulating medium can also decompose ozone generated in the discharging process in situ, so that the problem of low ozone decomposition efficiency caused by small contact area between the catalyst and ozone is solved by utilizing the high specific surface area of the porous insulating medium.
Therefore, the purification device can solve the problems that the discharge area of the ion generating device in the prior art is smaller, the plasma concentration is not beneficial to increase, and the air purification effect is prevented from being improved.
In an alternative embodiment, the porous insulating medium has a plurality of through holes and a plurality of blind holes formed therein.
The beneficial effects are that: the through holes can be used for allowing air to be purified to pass through and discharging micropores of the air in the through holes so as to increase the plasma concentration.
The blind holes can be used for increasing the specific surface area of the porous insulating medium and prolonging the residence time of air between the high-voltage electrode and the ground electrode, so that the plasma concentration can be conveniently increased, the air to be purified can be sufficiently purified, and the ozone removal catalyst can be conveniently used for sufficiently decomposing ozone generated by electrolysis.
In an alternative embodiment, the surface of the porous insulating medium, the inner surfaces of the plurality of through holes, and the inner surfaces of the plurality of blind holes are covered with a deodorizing catalyst.
In an alternative embodiment, the ozone removal catalyst is one or more of a manganese-based ozone catalyst, titanium dioxide, and silver; and/or the number of the groups of groups,
the high voltage is steel mesh or iron wire mesh;
the grounding electrode is a steel mesh or an iron wire mesh;
the porous insulating medium is porous alumina ceramic or porous glass.
The beneficial effects are that:
when the ozone removal catalyst is selected as the manganese-based ozone catalyst, the manganese-based ozone catalyst can decompose ozone generated by discharge in real time.
When the ozone removal catalyst is titanium dioxide, the titanium dioxide can decompose ozone generated by discharge, and can generate electron hole pairs by energy generated by discharge, so that organic matters are subjected to catalytic oxidation degradation, and the air purification efficiency is improved.
When silver is selected as the deodorizing catalyst, the deodorizing catalyst can decompose ozone generated by discharge and can effectively improve the sterilizing efficiency.
In an alternative embodiment, the projection of the high voltage electrode towards the porous insulating medium falls within the range of the surface of the porous insulating medium;
the projection of the ground electrode toward the porous insulating medium falls within the range of the surface of the porous insulating medium.
The beneficial effects are that:
through so setting, can avoid creepage between high voltage pole and the earth electrode to lead to damaging porous insulating medium's edge.
In an alternative embodiment, the purification device comprises a housing having an air inlet and an air outlet formed therein, and the high voltage pole, porous insulating medium and ground pole are disposed within the housing between the air inlet and the air outlet.
In an alternative embodiment, the purification apparatus further comprises:
an ozone detector adapted to detect an ozone concentration of a use environment of the purification device;
and the control module is in communication connection with the ozone detector and the power supply module and is suitable for controlling the power supply module to stop supplying power to the high-voltage electrode when the detection result of the ozone detector is higher than a preset safety value.
The beneficial effects are that: the ozone detector can monitor the ozone concentration in the service environment of the purification device in real time, when the ozone concentration is higher than a preset safety value, the power supply module is controlled to stop supplying power to the purification device, air passes through the porous insulating medium at a certain speed, and is catalyzed and degraded by the ozone removal catalyst on the surface of the porous insulating medium and in the hole, so that the indoor ozone concentration is ensured to be lower than a standard limit value, and the physical health of a user is ensured to be not damaged.
In a second aspect, the present invention also provides a method of manufacturing a porous insulating medium, the porous insulating medium being applied to a purification apparatus as in the first aspect of the present invention, the method comprising:
obtaining a pore-forming agent, a solvent, an adsorbent, a binder, a dispersing agent and a catalyst precursor in a predetermined mass ratio;
premixing a pore-forming agent for a first preset period of time by using part of solvent to obtain premix;
mixing the adsorbent, the binder, the dispersing agent, the catalyst precursor and the rest of the solvent, grinding for a second preset time period, and adding the premix liquid to grind for a third preset time period to obtain target slurry;
immersing the porous medium into the target slurry for a fourth preset time to obtain an immersed porous medium;
drying the impregnated porous medium at the first preset temperature for a fifth preset time period, and sintering the impregnated porous medium at the second preset temperature for a sixth preset time period after drying to obtain the porous insulating medium.
The beneficial effects are that: the method for manufacturing the porous insulating medium of the first aspect of the present invention is used for manufacturing the porous insulating medium of the purification apparatus of the second aspect of the present invention, and can optimize the internal pore structure of the porous medium, effectively increase the specific surface area of pores, increase the attachment sites of the ozone removal catalyst, increase the active sites of the ozone removal catalyst, and increase the degradation efficiency of the ozone removal catalyst to ozone.
In an alternative embodiment, the pore-forming agent is graphite; and/or the solvent is water; and/or the adsorbent is gamma-alumina powder; and/or the binder is a polyvinyl alcohol solution; and/or the catalyst precursor is manganese nitrate solution.
The beneficial effects are that:
during sintering, the pore-forming agent is oxidized to carbon dioxide gas and is expelled, thereby leaving a microporous structure in place. Under the action of pore-forming agent and gamma-alumina, the pore structure inside the porous medium is optimized, the specific surface area of the pores is effectively increased, the adhesion sites of the catalyst are increased, the catalyst precursor is converted into oxide with catalytic activity after roasting, the oxide is dispersed and adhered to the surface of gamma-alumina in the pores, the active sites of the catalyst are increased, and the degradation efficiency of the catalyst on ozone is improved.
In an alternative embodiment, the predetermined mass ratio of pore formers, solvents, adsorbents, binders, dispersants, and catalyst precursors is (3-5): (70-80): (8-12): (0.2-0.4): (0.2-0.4): (8-12); and/or the number of the groups of groups,
the first preset time length is t1, and t1 is more than or equal to 10 minutes and less than or equal to 20 minutes; and/or the number of the groups of groups,
the second preset time length is t2, and t2 is more than or equal to 10min and less than or equal to 20min; and/or the number of the groups of groups,
the third preset time length is t3, and t3 is more than or equal to 25min and less than or equal to 35min; and/or the number of the groups of groups,
the fourth preset time length is t4, and t4 is more than or equal to 10h and less than or equal to 14h; and/or the number of the groups of groups,
the fifth preset time length is t5, and t5 is more than or equal to 2h and less than or equal to 4h; and/or the number of the groups of groups,
the first preset temperature is T1, and the temperature is more than or equal to 80 ℃ and less than or equal to 120 ℃ and is more than or equal to T1; and/or the number of the groups of groups,
the second preset temperature is T2, and the temperature is more than or equal to 450 ℃ and less than or equal to 600 ℃ and is more than or equal to T2.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 schematically illustrates a purification apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a purification apparatus according to an embodiment of the present invention, wherein air to be purified is adapted to be led from one side of a ground electrode to a porous insulating medium and then to flow out from one side of a high voltage electrode through pores of the porous insulating medium;
FIG. 3 is a schematic illustration of a purification apparatus according to an embodiment of the present invention, wherein air to be purified is adapted to be led from one side of a high voltage pole to a porous insulating medium and then to flow out from one side of a ground pole through a gap of the porous insulating medium;
FIG. 4 schematically shows a cross-sectional view of a porous insulating medium of a purification unit according to an embodiment of the present invention;
fig. 5 is an enlarged view at a in fig. 4;
FIG. 6 is a schematic view of a purifying apparatus according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for manufacturing a porous insulating medium according to an embodiment of the present invention.
Reference numerals illustrate:
1. a high voltage electrode; 2. a ground electrode; 3. a porous insulating medium; 301. a through hole; 302. a blind hole; 4. an ozone removal catalyst; 5. a housing; 501. an air inlet; 502. and an air outlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of the present invention are described below with reference to fig. 1 to 6.
According to an embodiment of the present invention, in one aspect, there is provided a purification apparatus including a high voltage pole 1, a ground pole 2, and a porous insulating medium 3. Wherein the high voltage pole 1 is adapted to be connected to a power supply. The grounding electrode 2 is arranged opposite to the high-voltage electrode 1 and is suitable for grounding. The high-voltage pole 1 and the grounding pole 2 are respectively provided with a first ventilation hole and a second ventilation hole, and the first ventilation hole and the second ventilation hole are mutually communicated. The porous insulating medium 3 is arranged between the high-voltage electrode 1 and the grounding electrode 2, the ozone removing catalyst 4 is loaded on the porous insulating medium 3, and the pore diameter of the porous insulating medium 3 is d1, d1 is more than or equal to 80 mu and less than or equal to 120 mu.
The purification device of the invention is provided with a porous insulating medium 3 between a high-voltage electrode 1 and a grounding electrode 2, and a deodorizing catalyst 4 is loaded on the porous insulating medium 3. When the pore diameter of the porous insulating medium 3 is in the range of 80 μm to 120 μm, a small amount of initially charged particles collide with gas atoms or molecules under the action of a strong electric field, and when collision energy is sufficiently large, bound electrons are separated from the gas atoms and become free electrons. Atoms after escaping electrons become positive ions, so that charged ions in the gas are proliferated to form current to pass through the gas, thereby micropore discharge and surface discharge can be generated in holes of the porous insulating medium 3, the plasma concentration is effectively increased, and the treatment efficiency of the purifying device to air to be purified is improved. The ozone removal catalyst 4 loaded on the porous insulating medium 3 can also decompose ozone generated in the discharging process in situ, so that the problem of low ozone decomposition efficiency caused by small contact area between the catalyst and ozone is solved by utilizing the high specific surface area of the porous insulating medium 3.
Therefore, the purification device can solve the problems that the discharge area of the ion generating device in the prior art is smaller, the plasma concentration is not beneficial to increase, and the air purification effect is prevented from being improved.
In the embodiment shown in fig. 2, the air to be purified is adapted to pass from the side of the earthing pole 2 to the porous insulating medium 3 and then out from the side of the high voltage pole 1 through the pores of the porous insulating medium 3.
In the embodiment shown in fig. 3, the air to be purified can also be selected to be led from the side of the high-voltage pole 1 to the porous insulating medium 3 and then to flow out from the side of the grounding pole 2 through the gaps of the porous insulating medium 3.
In one embodiment, the power supply means may be selected to be a high voltage dc power supply. The high voltage direct current power supply is suitable for providing 10-20KV high voltage direct current to the high voltage pole 1. In an embodiment, not shown, the power supply device is a high-frequency high-voltage device, and dielectric barrier discharge can be formed between the high-voltage electrode 1, the grounding electrode 2 and the porous insulating medium 3, thereby improving the discharge effect of the purification device.
The holes in the porous insulating medium 3 may be selected as through holes 301. In one embodiment, the porous insulating medium 3 is formed with a plurality of through holes 301 and a plurality of blind holes 302. The through holes 301 are capable of passing air to be purified therethrough and micro-hole discharging the air therein to increase the plasma concentration.
The blind holes 302 can be used to increase the specific surface area of the porous insulating medium 3 and to lengthen the residence time of air between the high-voltage electrode 1 and the ground electrode, and by so doing, not only can the plasma concentration be conveniently increased, but also the air to be purified can be sufficiently purified, and the ozone removal catalyst 4 can be conveniently used to sufficiently decompose ozone generated by electrolysis.
Preferably, in one embodiment, the surface of the porous insulating medium 3, the inner surfaces of the plurality of through holes 301, and the inner surfaces of the plurality of blind holes 302 are covered with the ozone removal catalyst 4.
In one embodiment, the ozone removal catalyst 4 is one or more of a manganese-based ozone catalyst, titanium dioxide, and silver. When the ozone removal catalyst 4 is selected as the manganese-based ozone catalyst, the manganese-based ozone catalyst can decompose ozone generated by discharge in real time. Wherein, the silver is metallic silver, preferably nano metallic silver, and has better sterilization effect.
When the ozone removal catalyst 4 is selected as titanium dioxide, the titanium dioxide can decompose ozone generated by discharge, generate electron-hole pairs by energy generated by discharge, catalyze, oxidize and degrade organic matters, and improve the efficiency of air purification.
When silver is selected as the deodorizing catalyst 4, it can decompose not only ozone generated by discharge but also effectively enhance the sterilizing efficiency.
The high voltage electrode and the ground electrode are preferably, but not limited to, foam metal electrodes or mesh electrodes. In one embodiment, the high voltage pole 1 is a steel or wire mesh; the aperture of the meshes of the steel mesh and the iron mesh is d2, and d2 is more than or equal to 0.5mm and less than or equal to 1.5mm. Preferably, the mesh size of the steel wire mesh is 1mm.
The grounding electrode 2 is a steel mesh or an iron wire mesh; the aperture of the meshes of the steel mesh and the iron mesh is d3, and d3 is more than or equal to 0.5mm and less than or equal to 1.5mm. Preferably, the mesh size of the steel wire mesh is 1mm.
The porous insulating medium 3 is preferably, but not limited to, porous alumina ceramic or porous glass. When the porous insulating medium is gamma-alumina, the gamma-alumina has abundant nano micropores, which is more beneficial to the dispersion and adsorption of active substances, and the deodorizing catalyst is fully loaded on the surface of the gamma-alumina, so that the specific surface area of the deodorizing catalyst is effectively increased.
The surface areas of the high voltage pole 1, the ground pole 2 and the porous insulating medium 3 may be chosen to be equal and aligned with the porous insulating medium 3. Preferably, the surface area of the porous insulating medium 3 is larger than the surface area of the high voltage electrode 1. The projection of the high-voltage electrode 1 toward the porous insulating medium 3 falls within the range of the surface of the porous insulating medium 3. The surface area of the porous insulating medium 3 is larger than the surface area of the ground electrode 2. The projection of the ground electrode 2 toward the porous insulating medium 3 falls within the range of the surface of the porous insulating medium 3.
By this arrangement, the edge of the porous insulating medium 3 can be prevented from being damaged by creepage between the high-voltage electrode 1 and the grounding electrode 2. The high voltage pole 1 and the grounding pole 2 may optionally have a certain gap with the porous insulating medium 3, and preferably, in this embodiment, the high voltage pole 1 and the grounding pole 2 respectively abut against two sides of the porous insulating medium 3.
A set of high voltage poles 1, porous insulating medium 3 and ground poles 2 is defined as a discharge set. Through such setting, not only can be convenient for form micropore discharge in the downthehole of porous insulating medium 3, still reduced the shared space of a set of group that discharges to can set up more group that discharges in a purifier, promoted purifier's purifying effect from this.
The high voltage pole 1, the porous insulating medium 3 and the grounding pole 2 may alternatively be exposed directly to air, preferably in one embodiment the purification device comprises a housing 5. The housing 5 is formed with an air inlet 501 and an air outlet 502. The high-voltage pole 1, the porous insulating medium 3, and the ground pole 2 are disposed in the housing 5 between the air inlet 501 and the air outlet 502. Alternatively, the high-voltage electrode 1 is provided on the side of the porous insulating medium 3 near the air inlet 501. The grounding electrode 2 is arranged on one side of the porous insulating medium 3 close to the air outlet 502, or the grounding electrode 2 is arranged on one side of the porous insulating medium 3 close to the air inlet 501, and the high-voltage electrode 1 is arranged on one side of the porous insulating medium 3 close to the air outlet 502.
In one embodiment, the direction of extension of the high voltage pole 1, the porous insulating medium 3 and the ground pole 2 is perpendicular to the air flow direction.
In one implementation, the housing 5 is preferably an insulating housing 5, and the inner peripheral wall of the insulating housing 5 may optionally be formed with a ledge adapted to limit the porous insulating medium 3, and the porous insulating medium 3 is limited on the ledge. The grounding electrode 2 and the high-voltage electrode 1 are respectively fixedly arranged on two sides of the porous insulating medium 3, so that the number of supporting structures in the purifying device is reduced, the purifying device is more compact, the grounding electrode 2 and the high-voltage electrode 1 are connected with the shell 5 by means of the porous insulating medium 3, and the grounding electrode 2 and the high-voltage electrode 1 are spaced from the shell 5, and the risk of creepage is greatly reduced.
When the high-voltage electrode 1 is disposed on the side of the porous insulating medium 3 close to the air inlet 501. When the grounding electrode 2 is arranged on one side of the porous insulating medium 3 close to the air outlet 502, air to be purified can flow out of the high-voltage electrode 1 from one side of the grounding electrode 2 at a certain speed through pores of the porous insulating medium 3, and meanwhile, the power supply device provides a direct-current voltage of 15kv to generate an electric field, and the electric field can act on the surface of the porous insulating medium 3 and air in the pores. The gas is discharged to generate a large amount of electrons, active particles and heat.
These electrons, active particles are able to interact with bacteria in the contaminated air, organic contaminants including formaldehyde, TVOC (total Volatile Organic Compounds ), etc., causing the bacteria to die. Meanwhile, by-product ozone generated by discharge can be adsorbed on the ozone removal catalyst, and is decomposed into oxygen through catalytic decomposition reaction, so that the ozone amount generated in the discharge process is reduced.
The grounding electrode 2 is arranged on one side of the porous insulating medium 3 close to the air inlet 501, and the high-voltage electrode 1 is arranged on one side of the porous insulating medium 3 close to the air outlet 502.
When the grounding electrode 2 is disposed on the side of the porous insulating medium 3 close to the air inlet 501 and the high-voltage electrode 1 is disposed on the side of the porous insulating medium 3 close to the air outlet 502, air to be purified can flow out from the grounding electrode 2 from the side of the high-voltage electrode 1 at a certain rate through the pores of the porous insulating medium 3, and meanwhile, the power supply device provides a direct-current voltage of 15kv to generate an electric field, and the electric field can act on the surface of the porous insulating medium 3 and gas in the pores. The gas is discharged to generate a large amount of electrons, active particles and heat.
These electrons, active particles can interact with bacteria in contaminated air, organic contaminants including formaldehyde, TVOC, etc., causing bacterial death. Meanwhile, by-product ozone generated by the discharge can be adsorbed on the ozone removal catalyst 4, and the ozone is decomposed into oxygen through catalytic decomposition reaction, so that the ozone amount generated in the discharge process is reduced.
In one embodiment, the purification apparatus further comprises an ozone detector and a control module. The ozone detector is adapted to detect the ozone concentration of the environment in which the purification device is used. The control module is in communication connection with the ozone detector and the power supply module, and is suitable for controlling the power supply module to stop supplying power to the high-voltage electrode 1 when the detection result of the ozone detector is higher than a preset safety value.
The ozone detector can monitor the ozone concentration in the service environment of the purification device in real time, when the ozone concentration is higher than a preset safety value, the power supply module is controlled to stop supplying power to the purification device, air passes through the porous insulating medium 3 at a certain speed, and is catalyzed and degraded by the ozone removal catalyst 4 on the surface of the porous insulating medium 3 and in the hole, so that the indoor ozone concentration is ensured to be lower than a standard limit value, and the physical health of a user is ensured not to be damaged.
Preferably, a fan is further arranged in the purifying device, and when the ozone concentration in the use environment of the purifying device is higher than a preset safety value, the fan can drive air flow to pass through the porous insulating medium 3, and the air flow is catalyzed and degraded by the surface of the porous insulating medium 3 and the ozone removal catalyst 4 in the pores, so that the indoor ozone concentration is rapidly reduced.
The preset safety value can be selected as a national standard value of ozone. For example, in the environmental air quality Standard (GB 3095-2012), the ozone average concentration limit for 8 hours is 100ug/m 3 The secondary standard is 160ug/m 3 。
According to an embodiment of the present invention, on the other hand, there is also provided a method of manufacturing the porous insulating medium 3. The porous insulating medium 3 is used for the purification apparatus of the embodiment of the present invention, and the manufacturing method includes step S1, step S2, step S3, step S4, and step S5.
An embodiment of the present invention is described below with reference to fig. 7.
Step S1: obtaining a pore-forming agent, a solvent, an adsorbent, a binder, a dispersing agent and a catalyst precursor in a predetermined mass ratio;
step S2: premixing the pore-forming agent for a first preset time by using part of solvent to obtain premix. Wherein, the proportion of partial solvent to the total solvent is not excessively restricted, so long as the pore-forming agent can be infiltrated.
Step S2 can improve the uniformity of the distribution of the pore-forming agent in the target slurry, so that the optimization effect of the pore-forming agent on the pore channel structure of the porous medium is improved. Wherein the premixing process may be selected to grind the pore former and a portion of the solvent using a mortar and pestle, preferably, in this embodiment, the premixing process is ball milling the pore former and a portion of the solvent using a ball mill.
Step S3: mixing the adsorbent, the binder, the dispersing agent, the catalyst precursor and the rest of the solvent, grinding for a second preset time period, adding the premix liquid, and grinding for a third preset time period to obtain the target slurry.
The milling process may be selected from the group consisting of milling the adsorbent, binder, dispersant, catalyst precursor, residual solvent, and premix using a mortar and pestle. Preferably, in this embodiment, the milling process is to put the adsorbent, binder, dispersant, catalyst precursor, residual solvent and premix into a ball mill for ball milling.
Step S4: immersing the porous medium into the target slurry for immersing for a fourth preset time period to obtain the immersed porous medium. Preferably, the porous medium is a porous medium after ultrasonic cleaning and drying, so that impurities on the surface of the porous medium can be avoided, and the pore-forming effect and the attachment effect of the ozone removal catalyst 4 are prevented.
Step S5: drying the impregnated porous medium at the first preset temperature for a fifth preset time period, and sintering the impregnated porous medium at the second preset temperature for a sixth preset time period after drying to obtain the porous insulating medium 3. Wherein, the sintering process can be carried out by using an alcohol lamp and a crucible. Preferably, in this embodiment, the sintering process comprises placing the impregnated porous medium in a muffle furnace and sintering. The second preset temperature is T2, and the temperature is more than or equal to 450 ℃ and less than or equal to 600 ℃ and is more than or equal to T2. Preferably, the rate of organisms during sintering is 2-5 ℃/min.
The manufacturing method of the porous insulating medium can optimize the internal pore canal structure of the porous medium, effectively improve the specific surface area of pores, increase the attachment sites of the ozone removal catalyst, increase the active sites of the ozone removal catalyst and improve the degradation efficiency of the ozone removal catalyst on ozone.
The pore-forming agent is preferably, but not limited to, at least one of ammonium bicarbonate, ammonium carbonate, ammonium chloride. In one embodiment, the pore former is graphite. And/or the solvent is water; and/or the adsorbent is gamma-alumina powder; and/or the binder is a polyvinyl alcohol solution; and/or the catalyst precursor is manganese nitrate solution. The mass concentration of the polyvinyl alcohol may be selected to be in the range of 5% to 15%, preferably 10%. The volume concentration of the manganese nitrate solution is preferably 98%.
During sintering, the pore-forming agent is oxidized to carbon dioxide gas and is expelled, thereby leaving a microporous structure in place. Under the action of pore-forming agent and gamma-alumina, the pore structure inside the porous medium is optimized, the specific surface area of the pores is effectively increased, the adhesion sites of the catalyst are increased, the catalyst precursor is converted into oxide with catalytic activity after roasting, the oxide is dispersed and adhered to the surface of gamma-alumina in the pores, the active sites of the catalyst are increased, and the degradation efficiency of the catalyst on ozone is improved.
In one embodiment, the predetermined mass ratio of pore formers, solvents, adsorbents, binders, dispersants, and catalyst precursors is 3 to 5: 70-80: 8-12: 0.2 to 0.4:0.2 to 0.4: 8-12.
In a preferred embodiment, the predetermined mass ratio of pore formers, solvents, adsorbents, binders, dispersants, and catalyst precursors is 4:75.4:10:0.3:0.3:10.
The first preset time period is t1, and t1 is more than or equal to 10 minutes and less than or equal to 20 minutes. In a more preferred embodiment, t1=15 min.
The second preset time period is t2, and t2 is more than or equal to 10 minutes and less than or equal to 20 minutes. In a more preferred embodiment, t2=15 min.
The third preset time period is t3, and t3 is more than or equal to 25min and less than or equal to 35min. In a more preferred embodiment, t3=30 min.
The fourth preset time length is t4, and t4 is more than or equal to 10h and less than or equal to 14h. In a more preferred embodiment, t4=12h.
The fifth preset time length is t5, and t5 is more than or equal to 2h and less than or equal to 4h. In a more preferred embodiment, t5=3h.
The first preset temperature is T1, and the temperature is more than or equal to 80 ℃ and less than or equal to 120 ℃ and is more than or equal to T1. In a more preferred embodiment, t1=100℃.
The second preset temperature is T2, and the temperature is more than or equal to 450 ℃ and less than or equal to 600 ℃ and is more than or equal to T2.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A purification apparatus, comprising:
a high voltage pole (1) adapted to be connected to a power supply;
the grounding electrode (2) is arranged opposite to the high-voltage electrode (1) and is suitable for grounding, a first ventilation hole and a second ventilation hole are formed in the high-voltage electrode (1) and the grounding electrode (2) respectively, and the first ventilation hole and the second ventilation hole are communicated with each other;
the porous insulating medium (3) is arranged between the high-voltage electrode (1) and the grounding electrode (2), an ozone removal catalyst (4) is loaded on the porous insulating medium (3), and the pore diameter of the porous insulating medium (3) is d1, and d1 is more than or equal to 80 mu and less than or equal to 120 mu.
2. The purification device according to claim 1, characterized in that the porous insulating medium (3) is formed with a plurality of through holes (301) and a plurality of blind holes (302).
3. The purification apparatus according to claim 2, wherein the surface of the porous insulating medium (3), the inner surfaces of the plurality of through holes (301), and the inner surfaces of the plurality of blind holes (302) are covered with a deodorizing catalyst (4).
4. A purification device according to any one of claims 1 to 3, wherein the ozone removal catalyst (4) is one or more of a manganese-based ozone catalyst, titanium dioxide and silver; and/or the number of the groups of groups,
the high-voltage electrode (1) is a steel mesh or an iron wire mesh;
the grounding electrode (2) is a steel mesh or an iron wire mesh;
the porous insulating medium (3) is porous alumina ceramic or porous glass.
5. A purification device according to any one of claims 1 to 3, characterized in that the surface area of the porous insulating medium (3) is larger than the surface area of the high voltage pole (1), the projection of the high voltage pole (1) towards the porous insulating medium (3) falling within the range of the surface of the porous insulating medium (3);
the surface area of the porous insulating medium (3) is larger than the surface area of the grounding electrode (2), and the projection of the grounding electrode (2) towards the porous insulating medium (3) falls into the range of the surface of the porous insulating medium (3).
6. A purification device according to any one of claims 1 to 3, characterized in that the purification device comprises a housing (5), an air inlet (501) and an air outlet (502) are formed in the housing (5), and the high-voltage pole (1), the porous insulating medium (3) and the grounding pole (2) are arranged in the housing (5) and between the air inlet (501) and the air outlet (502).
7. A purification device according to any one of claims 1 to 3, further comprising:
an ozone detector adapted to detect an ozone concentration of an environment in which the purification device is used;
and the control module is in communication connection with the ozone detector and the power supply module and is suitable for controlling the power supply module to stop supplying power to the high-voltage electrode (1) when the detection result of the ozone detector is higher than a preset safety value.
8. A method of manufacturing a porous insulating medium (3), characterized in that the porous insulating medium (3) is applied to a purification apparatus as claimed in any one of claims 1 to 7, the method of manufacturing comprising:
obtaining a pore-forming agent, a solvent, an adsorbent, a binder, a dispersing agent and a catalyst precursor in a predetermined mass ratio;
premixing the pore-forming agent with part of the solvent for a first preset time period to obtain a premix;
mixing the adsorbent, the binder, the dispersing agent, the catalyst precursor and the rest of the solvent, grinding for a second preset time period, and adding the premix solution to grind for a third preset time period to obtain target slurry;
immersing the porous medium into the target slurry for a fourth preset time to obtain an immersed porous medium;
drying the impregnated porous medium at the first preset temperature for a fifth preset time period, and sintering the impregnated porous medium at the second preset temperature for a sixth preset time period after drying to obtain the porous insulating medium (3).
9. The method of manufacturing a porous insulating medium (3) according to claim 8, characterized in that the pore-forming agent is graphite; and/or the solvent is water; and/or, the adsorbent is gamma-alumina powder; and/or, the binder is a polyvinyl alcohol solution; and/or the catalyst precursor is manganese nitrate solution.
10. The method of manufacturing a porous insulating medium (3) according to claim 8, characterized in that,
the predetermined mass ratio of the pore-forming agent, the solvent, the adsorbent, the binder, the dispersing agent and the catalyst precursor is (3-5): (70-80): (8-12): (0.2-0.4): (0.2-0.4): (8-12); and/or the number of the groups of groups,
the first preset time length is t1, and t1 is more than or equal to 10min and less than or equal to 20min; and/or the number of the groups of groups,
the second preset time period is t2, and t2 is more than or equal to 10min and less than or equal to 20min; and/or the number of the groups of groups,
the third preset time period is t3, and t3 is more than or equal to 25min and less than or equal to 35min; and/or the number of the groups of groups,
the fourth preset time length is t4, and t4 is more than or equal to 10h and less than or equal to 14h; and/or the number of the groups of groups,
the fifth preset time length is t5, and t5 is more than or equal to 2h and less than or equal to 4h; and/or the number of the groups of groups,
the first preset temperature is T1, and the temperature is more than or equal to 80 ℃ and less than or equal to 120 ℃ and is more than or equal to T1; and/or the number of the groups of groups,
the second preset temperature is T2, and the temperature is more than or equal to 450 ℃ and less than or equal to 600 ℃ and is more than or equal to T2.
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| CN118009457A (en) * | 2024-04-08 | 2024-05-10 | 珠海格力电器股份有限公司 | Air purifying device, control method thereof, control device and computer equipment |
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| CN118009457A (en) * | 2024-04-08 | 2024-05-10 | 珠海格力电器股份有限公司 | Air purifying device, control method thereof, control device and computer equipment |
| CN118009457B (en) * | 2024-04-08 | 2024-07-23 | 珠海格力电器股份有限公司 | Air purifying device, control method thereof, control device and computer equipment |
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