CN113457439A - Integrated technology for dust removal, denitration and desulfurization by coupling fiber pipe and catalyst filtering system - Google Patents
Integrated technology for dust removal, denitration and desulfurization by coupling fiber pipe and catalyst filtering system Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 64
- 239000003054 catalyst Substances 0.000 title claims abstract description 52
- 239000000428 dust Substances 0.000 title claims abstract description 37
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 28
- 230000023556 desulfurization Effects 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 title claims abstract description 12
- 238000010168 coupling process Methods 0.000 title claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 12
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000000746 purification Methods 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000010924 continuous production Methods 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims abstract 12
- 239000011148 porous material Substances 0.000 claims abstract 3
- 239000007789 gas Substances 0.000 claims description 33
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 12
- 239000004571 lime Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 5
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 2
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- -1 etc. Substances 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- MAHNFPMIPQKPPI-UHFFFAOYSA-N disulfur Chemical compound S=S MAHNFPMIPQKPPI-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910001872 inorganic gas Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to the field of gas purification, comprises gas dust removal, denitration and desulfurization, and provides a novel coupling technology for solving the problems that the traditional purification technology has complex flow, is not suitable for continuous production and gas source treatment with large load. The invention relates to a membrane tube and catalyst coupling system for treating gas containing dust, sulfide and nitrate, wherein the core body of the device is a ceramic fiber filter tube, a special denitration catalyst is filled in the filter tube, the filling capacity is determined according to the concentration of the nitrate in the treatment system, and dust removal and denitration agent desulfurization are synchronously carried out in the whole treatment process. The dust removal system is a ceramic fiber filter tube arranged on a pore plate of the dust collector, the denitration system is a ceramic fiber filter tube coated with a catalyst, and the desulfurization system is a ceramic fiber tube carrying limestone. The invention can solve the problems of high energy consumption, complex flow and the like of the traditional purification technology, realizes integrated continuous purification, has good purification efficiency, and has certain application significance and energy-saving and environment-friendly significance.
Description
Technical Field
The invention belongs to the field of gas purification, and particularly relates to a novel combined type filter pipe system, which comprises dust removal, denitration and desulfurization.
Background
High energy consumption and high emission exist in the traditional industrial production, and the control of pollutant emission is increasingly strict under the current environmental protection policy, especially nitrogen oxides, dust and sulfides. In the conventional method, high-temperature electric dust removal is mostly adopted for dust removal, SCR technology is adopted for denitration, a semi-dry process is basically adopted for a desulfurization process, and a wet process is partially adopted. The processing temperatures of the traditional dedusting, denitration and desulfurization processes are inconsistent, a waste heat treatment system is required to be combined, the processes are respectively carried out at different temperature sections, and the process is relatively complex. In addition, the traditional process has a vacuum period of shutdown and maintenance, and during the period, environmental protection facilities cannot be put into operation, so that flue gas is directly discharged, overflow is caused, the environment is polluted, and a standby system is arranged, so that the production investment is greatly increased. How to realize the ultralow emission of atmospheric emissions and improve the whole treatment level becomes one of the key technologies for breaking through green transformation and upgrading in the traditional industry.
The invention seeks an efficient coupling continuous treatment technology, realizes on-line non-stop maintenance, simplifies the whole working condition operation, has long service life and low cost, simultaneously reaches the emission standard, and is a problem to be solved urgently in the industry at present.
Disclosure of Invention
The invention provides integrated equipment and technology for dust removal, denitration and desulfurization by coupling a fiber pipe and a catalyst filtering system, aiming at solving the problems of inconsistent adaptive treatment temperature, additional waste heat device, complex flow, large equipment investment and the like of the traditional dust removal, denitration and desulfurization process, effectively solving the problems of realizing dust removal, denitration and desulfurization by using a denitration agent in the same equipment and improving the production capacity.
The invention is realized by adopting the following technical scheme: the invention realizes the integration of dedusting, denitration and desulfurization technologies of the fiber tube and the catalyst filtering system, adopts different membrane systems and catalysts to respectively carry out dedusting, denitration and desulfurization processes, realizes the efficient and continuous dedusting, denitration and desulfurization processes, adopts the fiber tube to carry out dedusting and filtering with rich surface area, and directly uses blowing gas to sweep, thus finishing the purification of dust-containing gas; at a certain temperature, a catalyst system is formed by coating a catalyst fiber tube to complete the purification of the nitrogen-containing oxide; the gas to be treated carries certain lime particles to complete the desulfurization process. In one set of system, accomplish dust removal denitration desulfurization integration, reduce the process, improve production efficiency. The catalyst in the catalyst filtering system is solidified in a coating mode, the catalyst can adopt a noble metal catalyst or a composite transition metal catalyst with better performance, the whole catalyst can be repeatedly used, and energy is saved. The invention is suitable for treating smoke containing dust, sulfide and nitride in industrial production, and can relate to the glass industry, the coking industry and the like. The invention is adopted for purification, can greatly simplify the flow, realizes the multifunctional utilization of the fiber pipe, has high treatment effect and low operation cost, improves the utilization rate of the whole system while realizing high-efficiency purification, and has certain engineering practical application and energy-saving and environment-friendly significance.
Drawings
FIG. 1 is a schematic diagram of a process for purifying gas by coupling a fiber tube and a catalytic filter system according to the present invention;
FIG. 2.1 is a schematic view of a single-piece inter-embedded coupling fiber tube structure according to the present invention;
FIG. 2.2 is a schematic view of a triangular inter-embedded coupling fiber tube structure according to the present invention;
in fig. 1: 1-heating a bin; 2-a lime particle bin; 3-a conveying fan; 4-coupled fiber filter tubes (filter system and supported catalyst system); 5-an air blowing system; 6-induced draft fan.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Coupling fiber pipe and catalyst filtration system are used for dust removal denitration desulfurization integrated device, are a gas purification integrated technology, have coupled three workshop sections of dust removal, denitration and desulfurization, accomplish in same equipment. Through the external conveying acting force, the gas to be treated can be conveyed in the radial direction or in the axial direction through the fiber pipe, and the treated gas enters the next procedure through an external discharge port of the induced draft fan. The fiber pipe is a membrane pipe with high temperature resistance and developed specific surface area, and in order to realize integrated purification, a denitration catalyst is loaded on the surface of the fiber pipe, so that dust removal and denitration can be integrated. In addition, after the heating bin, the process is also provided with a lime particle bin, and lime particles are mixed with the gas to be purified to realize the desulfurization function of the device. After the whole purification process is finished, the upper part of the fiber filtering and catalyst system is provided with an air blowing device, and air blowing enters the fiber pipe to realize the regeneration of the system. In the actual operation process, two sets of fiber tubes are used in parallel, one set is a purification device, the other set is a regeneration purging device, and the two sets are alternately used, so that the continuous production of the whole process is realized.
Depending on the type of gas to be cleaned, the appropriate module may be selected for processing. For the gas without sulfide, the lime particle bin 2 is in a closed state, dust removal and denitration are completed only by a fiber membrane tube and a catalyst system 4 containing a catalyst, and after purification, a blowing system 5 is started to complete a blowing process; for the gas only containing sulfide, the lime particle bin 2 is in an unopened state, the gas with lime particles is desulfurized in the fiber membrane tube and the catalyst system 4 containing catalyst, and the purified gas and unreacted lime particles are brought out by the induced draft fan 6. In the operation process, in order to ensure the high-efficiency omnibearing contact of gas and the fiber filter tube and simultaneously cause the falling of the loaded catalyst due to overhigh gas velocity, the gas velocity in the whole system is kept between 2 and 5m/s, thereby realizing good purification effect.
The object to be treated by the invention is inorganic gas containing dust, nitrogen oxide and sulfide, and can be waste gas in the coking industry, glass industry, petrochemical industry, biological industry and the like. The denitration catalyst is a metal catalyst, can be a single transition metal or noble metal catalyst, and can also be a composite transition metal catalyst. The purge gas is inert gas and normal temperature air, so that the influence of the reaction of the catalyst on the catalytic performance of the catalyst in the purge process is avoided.
The fiber tube and the catalyst filtering system included in the process system diagram shown in fig. 1 are core parts of the whole purification process, and the structure of the fiber tube and the catalyst filtering system is improved by the invention, as shown in fig. 2. The filtering and catalyst system is of an embedded structure, and a bracket is arranged in the fiber membrane tube and is the fiber membrane tube coated with the catalyst. The support can be of a single-piece embedded type, as shown in fig. 2.1, or of a triangular embedded type, as shown in fig. 2.2. The cross-sectional area of the fiber membrane tube is increased due to the mutually-embedded structure, the contact area of the gas phase and the solid phase is increased, the path of the gas passing system is changed, the retention time is prolonged, and the purification efficiency is improved. The angle between the support and the horizontal membrane tube is 45 degrees, the vertical height of the support is two thirds of the diameter of the whole fiber membrane tube, the distance between the horizontal gaps of the supports is one fifth of the diameter of the fiber membrane tube, and gas can be ensured to pass through in time.
Example 1: aiming at a laboratory to automatically simulate mixed gas containing dust, nitric oxide and sulfur dioxide, the dust is fly ash with the average particle size of 2 mu m, a fiber filter tube coated with a denitration catalyst is used as a purification device, and the denitration catalyst is a catalyst with titanium dioxide as a carrier and vanadium pentoxide as an active component. The gas is also mixed with a certain amount of lime particles. The whole device has a treatment capacity of 50-100m3The diameter of the fiber tube is 110mm, 10 upper and lower brackets are arranged in the fiber tube, the length of the fiber tube is 500mm, and the temperature of the gas is raised to 300 ℃ through an air heater before the gas enters the fiber filter tube. The concentration of the dust particles at the inlet is 70-90mg/m3Of oxygenThe concentration of the sulfur sulfide is 100-120mg/m3The concentration of nitric oxide is 100-150mg/m3。
After purification by a fiber filter tube, the single-pass purification efficiency is as follows: the concentration of outlet dust is less than 10mg/m3The concentration of sulfur dioxide is less than 40mg/m3The concentration of nitric oxide is less than 30mg/m3(ii) a And (3) two-time circulation purification effect: the concentration of outlet dust is less than 7 mg/m3The concentration of sulfur dioxide is less than 20mg/m3Nitric oxide concentration < 20mg/m3。
Example 2: in order to further examine the amplification effect and repeatability of the fiber filter tube, the fiber filter tube with the diameter of 200mm is designed, 20 upper and lower supports are arranged in the fiber filter tube, the vertical length of each support is 110mm, and each support is in a triangular embedded structure. Treating dust and nitric oxide gas with initial dust concentration of 80-100mg/m3The concentration of nitric oxide is 150-3. The denitration catalyst in the fiber filter tube is a catalyst which takes titanium dioxide as a carrier and is a composite active component of vanadium pentoxide, copper and manganese. The gas was heated to 300 c by an air heater before entering the fiber filter tube. The experimental result shows that the dust removal rate can reach more than 90 percent, and the nitric oxide removal rate is 92 percent, which indicates that the fiber filtering system has good purifying effect. And (3) blowing the purified fiber filter tube by adopting nitrogen, continuously introducing the gas to be treated, repeating for ten times, and still keeping good dedusting and denitration efficiency.
Claims (10)
1. The utility model provides a coupling fiber pipe and catalyst filtration system are used for desulfurization of dust removal denitration integration equipment, includes ceramic fiber filter membrane pipe and catalyst filter equipment, and the purification process is including three kinds of technologies of dust removal, denitration, desulfurization. The ceramic fiber pipe is directly installed on the pore plate of the integrator, and the catalyst filtering system is a ceramic fiber filtering pipe coated with a catalyst.
2. The integrated device of claim 1, wherein the ceramic fiber filter tube is made of a high temperature resistant material, has high porosity, very fine filter pore size, high stability, is not reactive with other chemicals, and has a certain rigidity.
3. The integrated device of claim 1, wherein the ceramic fiber filter tube is loaded with a catalyst on its surface, so that the specific surface area of the filter tube is increased to provide an effective active surface area and increase the reaction rate.
4. The integrated device of claim 1, wherein the ceramic fiber filter tube provides a desulfurization environment, and lime particles are brought into the membrane tube compartment to form a particle cake layer, thereby achieving a desulfurization function.
5. The integrated equipment of claim 1, wherein the ceramic fiber filter tube has a mutually embedded slope structure, so as to effectively increase gas turbulence and residence time, and increase specific surface area of the supported catalyst.
6. The integrated device of claim 1, wherein the integrated device is a device for performing dust removal, denitration and desulfurization in the same fiber tube. In the process design, a system is started and prepared, the cleaning and regeneration of the filter tubes are alternately completed, and the continuous production is ensured.
7. The integrated equipment for dust removal, denitration and desulfurization by coupling the fiber tube and the catalytic filter system according to claim 1, wherein the equipment completes a gas treatment process, each section of dust removal, denitration and desulfurization is performed based on the fiber tube, dust removal is performed by means of the fiber filter tube, and the fiber filter tube is a composite material and can complete dust collection; in the denitration, a fiber filter tube is coated with a catalyst, the fiber filter tube is used as a support body to form a filter tube type catalyst system, and nitrogen oxides finish catalytic reaction at a certain temperature to play a role in denitration; and in the desulfurization process, a gas source to be treated with lime particles is introduced into the filter tube to form a lime particle cake layer, so that the desulfurization process is completed.
8. The integrated device of claim 1, wherein the device is capable of processing gas at a gas velocity of 2-5 m/s.
9. The integrated device of claim 1, wherein the fiber tubes are ceramic fiber tubes or modified fiber tubes and have a large specific surface area.
10. The integrated device of claim 1, wherein the catalyst in the fiber filtering pipe of the integrated device can be a noble metal catalyst, such as platinum, gold, etc., or a transition metal catalyst, such as copper, manganese, iron, etc., or a composite metal catalyst.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877415A (en) * | 2021-10-27 | 2022-01-04 | 盐城工学院 | Porous ceramic filter tube desulfurization dust removal denitration integrated device |
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| CN110152485A (en) * | 2019-05-24 | 2019-08-23 | 中建材环保研究院（江苏）有限公司 | A kind of cement kiln fume high-temperature denitration dust collecting device |
| CN110639364A (en) * | 2019-09-30 | 2020-01-03 | 上海交通大学 | Porous ceramic tubular filtering catalytic denitration unit and flue gas purification method thereof |
| CN210021733U (en) * | 2019-04-01 | 2020-02-07 | 青岛西子环保研究院有限公司 | Skid-mounted catalytic oxidation reactor |
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2021
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| CN113877415A (en) * | 2021-10-27 | 2022-01-04 | 盐城工学院 | Porous ceramic filter tube desulfurization dust removal denitration integrated device |
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