CN109647194B - Self-adaptive adsorption treatment equipment for urban street valley automobile exhaust - Google Patents
Self-adaptive adsorption treatment equipment for urban street valley automobile exhaust Download PDFInfo
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- CN109647194B CN109647194B CN201910099935.2A CN201910099935A CN109647194B CN 109647194 B CN109647194 B CN 109647194B CN 201910099935 A CN201910099935 A CN 201910099935A CN 109647194 B CN109647194 B CN 109647194B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B01D2253/10—Inorganic adsorbents
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Abstract
The invention provides self-adaptive adsorption treatment equipment for urban street valley automobile exhaust, which comprises a monitoring device and an adsorption filtering device, wherein the monitoring device comprises a monitoring box and a gas inlet pipe; the adsorption and filtration device comprises a refrigeration cavity, a first deposition cavity, and a flow dividing column, an activated carbon adsorber, a catalytic adsorber and a negative pressure fan which are sequentially arranged. According to the self-adaptive adsorption treatment device for the urban street valley automobile exhaust, the aim of self-adaptive adsorption filtration of the urban street valley automobile exhaust emission is fulfilled through the mutual matching of the monitoring device, the refrigerating cavity, the Peltier, the first deposition cavity, the sequentially arranged splitter column, the activated carbon adsorber, the catalytic adsorber and the negative pressure fan, so that the concentration of the urban street valley automobile exhaust is reduced, and the problem of atmosphere pollution caused by automobile exhaust enrichment due to poor diffusion conditions of the urban street valley is solved. The monitoring device triggers the adsorption filtering device to automatically respond and close, so that the energy consumption is reduced, and the adsorption requirement can be met to the maximum extent.
Description
Technical Field
The invention relates to the field of tail gas purification, in particular to self-adaptive adsorption treatment equipment for tail gas of an urban street valley automobile.
Background
With the development of science and technology and the improvement of living standard of people, people can not leave the convenient tool for riding instead of the automobile. In recent years, as the number of automobiles is increasing, the problem of environmental pollution due to automobile exhaust is becoming more serious. The gas discharged by the automobile in the driving process is called automobile exhaust, the automobile exhaust contains hundreds of different compounds, the pollutants comprise solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead, sulfur oxides and the like, the pollutants enter the air and seriously pollute the air environment, particularly in urban street valley areas of high-density buildings, the tail gas pollution degree of the urban street valleys is greatly increased due to the poor natural diffusion capacity and the large short-term traffic flow, great health threats are further generated to the activities of pedestrians on the ground near the city, and the urban atmospheric pollution degree is also greatly increased. Therefore, the device is provided with a corresponding automobile exhaust adsorption treatment device in urban streets and valleys, and has great significance for reducing pollution to urban environment and threat to crowd health.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the invention provides an adaptive adsorption treatment device for urban street valley automobile exhaust, which comprises a monitoring device and an adsorption filtering device; wherein:
the monitoring device is used for detecting the content of tail gas in the air, the flow rate of the automobile and the meteorological condition; the monitoring device and the adsorption filtering device are arranged on the street lamps on two sides of the road;
the adsorption filtering device comprises a refrigeration cavity, a first deposition cavity, and a flow dividing column, an activated carbon adsorber, a catalytic adsorber and a negative pressure fan which are sequentially arranged;
the flow dividing column is arranged above the refrigeration cavity; a Peltier is arranged above the refrigerating cavity; the refrigerating surface of the Peltier is downward, and the heating surface of the Peltier is toward the flow dividing column; one side of the shunt column is provided with a positive electric cavity, and the other side of the shunt column is provided with a negative electric cavity;
the air inlets of the positive electric cavity and the negative electric cavity are communicated with the refrigerating cavity through the first deposition cavity, and the air outlets are communicated with the activated carbon adsorber through the second deposition cavity; a drainage device is arranged in the first deposition cavity; a first deposition groove is arranged below the drainage device; a second deposition groove is arranged below the second deposition cavity; the monitoring device and the negative pressure fan are in communication connection with the controller; and triggering the negative pressure fan started or closed by the controller according to the monitoring condition of the monitoring device.
Further, the catalytic adsorber is a three-way catalyst.
Further, the activated carbon adsorber is of a porous structure.
Furthermore, a partition plate is arranged above the first deposition cavity; the bottom of the partition board is provided with a plurality of conical drainage devices; through holes are arranged between the drainage devices.
Further, the monitoring device is a tail gas monitoring sensor, an automobile flow sensor and a meteorological sensor.
Further, the device also comprises a post-processing device; the post-treatment device is connected with the adsorption filtering device; the post-treatment device is internally provided with an activated carbon absorber, a catalytic absorber replacing device, a first deposition cavity and a second deposition cavity cleaning device.
Further, the anti-sticking layer is prepared from the following components in parts by weight:
30-45 parts of thermoplastic resin
15-20 parts of polyvinyl ethyl ether
10-15 parts of polytetrafluoroethylene
5-9 parts of nylon
5-15 parts of plant butanediol
10-30 parts of a solvent.
Further, the anti-sticking layer is prepared from the following components in parts by weight:
35-40 parts of thermoplastic resin
Polyvinyl ether 17-19 parts
12-13 parts of polytetrafluoroethylene
6-8 parts of nylon
8-10 parts of plant butanediol
15-20 parts of a solvent.
Further, the thermoplastic resin is at least one of acrylic resin, chlorinated rubber and vinyl chloride resin.
Further, the solvent is at least one of xylene, toluene, ethylbenzene, diethyl ether, ethylene glycol dibutyl ether, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone.
According to the self-adaptive adsorption treatment device for the urban street valley automobile exhaust, the monitoring device, the refrigerating cavity, the Peltier, the first deposition cavity, the sequentially arranged flow dividing column, the activated carbon adsorber, the catalytic adsorber and the negative pressure fan are matched with one another, so that the purpose of self-adaptive adsorption filtration of the urban street valley automobile exhaust emission is achieved, the exhaust can be purified step by step in a targeted manner, the purification efficiency is high, the concentration of the urban street valley automobile exhaust is reduced, and the automobile exhaust enrichment caused by poor diffusion conditions of urban street valleys is relieved. The monitoring device triggers the adsorption filtering device to automatically respond and close, so that the energy consumption is reduced, and the adsorption requirement can be met to the maximum extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a view showing the arrangement positions of a monitoring device and an adsorption filtration device provided by the present invention;
FIG. 2 is a cross-sectional view of an adsorption filtration device;
FIG. 3 is a top view of a structure of a current-dividing column with positive and negative electric cavities;
fig. 4 is a schematic view of a replacement device module.
Reference numerals:
| 10 |
30 adsorption and |
40 |
| 310 |
311 Peltier | 320 |
| 321 |
322 |
323 |
| 324 through |
330 |
331 positive |
| 332 negative |
333 |
334 |
| 340 activated |
350 |
360 negative- |
| 370 controller |
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "couple" or "couples" and the like are not restricted to physical or mechanical connections, but may include electrical connections, optical connections, and the like, whether direct or indirect.
The embodiment of the invention provides self-adaptive adsorption treatment equipment for urban street valley automobile exhaust, which comprises a monitoring device 10 and an adsorption filtering device 30; wherein:
the monitoring device 10 is used for detecting the content of tail gas in the air, the flow rate of the automobile and the meteorological condition; the monitoring device 10 and the adsorption filtering device 30 are both arranged on the street lamps at two sides of the road;
the adsorption filtering device 30 comprises a refrigeration cavity 310, a first deposition cavity 320, and a flow dividing column 330, an activated carbon adsorber 340, a catalytic adsorber 350 and a negative pressure fan 360 which are arranged in sequence;
the splitter column 330 is arranged above the refrigeration cavity 310; a Peltier 311 is arranged above the refrigerating cavity 310; the refrigerating surface of the peltier 311 faces downwards, and the heating surface faces the diversion column 330; a positive electric cavity 331 is arranged on one side of the flow dividing column 330, and a negative electric cavity 332 is arranged on the other side;
the air inlets of the positive electric cavity 331 and the negative electric cavity 332 are communicated with the refrigerating cavity 310 through the first deposition cavity 320, and the air outlets are communicated with the activated carbon adsorber 340 through the second deposition cavity 333; a flow diverter 322 is arranged in the first deposition cavity 320; a first deposition groove 321 is arranged below the flow diverter 322; a second deposition groove 334 is arranged below the second deposition chamber 333; the monitoring device 10 and the negative pressure fan 360 are both in communication connection with a controller 370; and triggering the negative pressure fan 360 which is started or closed by the controller 370 according to the monitoring condition of the monitoring device 10.
In specific implementation, as shown in fig. 1, fig. 2 and fig. 3, the self-adaptive adsorption treatment equipment for urban street valley automobile exhaust includes a monitoring device 10 and an adsorption filtering device 30; wherein:
the monitoring device 10 is a tail gas monitoring sensor, an automobile flow sensor and a meteorological sensor; the monitoring device 10 is used for detecting the content of tail gas in the air, the flow rate of the automobile and the meteorological condition; when the tail gas monitoring sensor monitors that the data exceeds a set threshold value, or the automobile flow sensor monitors that the automobile is jammed and the flow is overloaded, or the meteorological sensor monitors that the street meteorological conditions are poor, whether the adsorption filtering device 30 is started or not is determined together through one or more monitoring results;
the monitoring device 10 and the adsorption filtering device 30 are both arranged on the street lamps at two sides of the road; the monitoring device 10 and the adsorption filtering device 30 are bound with the lighting street lamps on two sides of the road, so that the monitoring device is convenient to connect with a mains supply and install, the height is set according to the diffusion height of the automobile exhaust, and the construction difficulty is reduced;
as shown in fig. 2, the adsorption filter device 30 includes a refrigeration chamber 310, a first deposition chamber 320, and a split flow column 330, an activated carbon adsorber 340, a catalytic adsorber 350, and a negative pressure fan 360, which are sequentially disposed;
the refrigerating chamber 310 has one end opened and the other end connected to the first deposition chamber 320; the splitter column 330 is arranged above the refrigeration cavity 310; a plurality of Peltier 311 are arranged above the refrigerating cavity 310; the peltier 311 is electrically connected with the controller 30; the cooling surface of the peltier 311 faces the cavity of the cooling cavity 310, and the heating surface faces the splitter column 330; the refrigerating surfaces of the Peltier 311 can refrigerate to-70-0 ℃; as shown in fig. 3, the splitter 330 is cylindrical, and the left side of the splitter 330 is provided with a positive electric cavity 331 and the right side is provided with a negative electric cavity 332; the shapes of the positive electric cavity 331 and the negative electric cavity 332 are matched with the shape of the shunt column 330; positive charges and negative charges are respectively carried in the positive electric cavity 331 and the negative electric cavity 332 through positive and negative ion generators;
the air inlets of the positive electric cavity 331 and the negative electric cavity 332 are communicated with the refrigerating cavity 310 through the first deposition cavity 320, and the air outlets are communicated with the activated carbon adsorber 340 through the second deposition cavity 333; a flow diverter 322 is arranged in the first deposition chamber 320; a first deposition groove 321 is arranged below the flow diverter 322; a second deposition groove 334 is formed under the second deposition chamber 333; the monitoring device 10 and the negative pressure fan 360 are connected with the controller 370 in a wired or wireless communication manner;
when the monitoring device 10 detects that the tail gas or flow or weather in the environment meets the requirement of starting the adsorption and filtration device 30, the monitoring device 10 transmits the monitoring condition to the controller 370, analyzes the data state through a data transmission terminal, a data storage module and a data analysis module in the controller 370, and starts the negative pressure fan 360, the peltier 311 and the positive and negative ion generators through wireless or wired transmission equipment;
after the negative pressure fan 360 is started, gas with tail gas enters the refrigeration cavity 310 from the opening end of the refrigeration cavity 310, and the tail gas also contains a certain amount of gasoline due to insufficient gasoline combustion, dirty gasoline filter or loose and aged connecting hose connector, aged and loosened oil tank connecting hose and the like caused by the fact that a gasket in an automobile oil tank cover is aged or uneven and a fuel spray nozzle and a throttle valve are not cleaned for a long time to generate dirt; the gasoline in the gas is attached to the flow diverter 322 and is dropped into the first deposition groove 321 under the guide of the flow diverter 322 by the cooling of the refrigeration cavity 310 and the action of the negative pressure fan, so that the gasoline in the tail gas is separated;
the gas after gasoline separation is divided into two parts under the action of the splitter column 330, one part enters the positive electric cavity 331, and the other part enters the negative electric cavity 332; the positive electric cavity 331 and the negative electric cavity 332 are used for charging the particulate matters such as solid suspended particles and lead-containing particles in the gas with positive electricity or negative electricity; the gas respectively with positive electricity and negative electricity particles respectively flowing out of the positive electricity cavity 331 and the negative electricity cavity 332 is in collision combination in the second deposition cavity 333, and is heated under the action of the heating surface of the Peltier 311, so that the movement of air molecules is accelerated, turbulence is generated, the collision of the positive electricity particles and the negative electricity particles is increased, the positive electricity particles and the negative electricity particles are combined to form large particles, and the large particles fall into the second deposition groove 334, and the separation of the particles in the automobile exhaust is realized; in the experiment, the particle deposition rate of the positive and negative electric cavities is found to be 70% lower when the positive and negative electric cavities are not heated than when the positive and negative electric cavities are heated under the same experimental conditions;
the gas after the particle separation sequentially passes through the activated carbon adsorber 340 and the catalytic adsorber 350 with porous structures under the action of the negative pressure fan, and clean gas is discharged into the air; the activated carbon adsorber 340 can adsorb gas such as carbon dioxide; when high-temperature automobile exhaust passes through the catalytic adsorber 350, a purifying agent in the three-way catalyst enhances the activity of three gases, namely CO, HC and NOx to promote the three gases to perform certain oxidation-reduction chemical reaction, wherein CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water (H20) and carbon dioxide; NOx is reduced to nitrogen and oxygen. Three harmful gases are changed into harmless gases, so that the automobile exhaust can be purified;
in the invention, the characteristics of heating and refrigerating of the Peltier 311 are utilized; the refrigeration surface is used for condensing gasoline components in the air, and the heating surface is used for depositing particle components in the air; meanwhile, because the catalysis of the three-way catalyst needs a certain temperature, and the temperature needs to be reduced in the condensation of gasoline components, if the temperature is controlled to be directly introduced into the three-way catalyst, the problem of low catalysis efficiency can be caused, and the heating of the heating surface of the Peltier 311 not only achieves the purpose of particle deposition, but also meets the working condition of heat requirement in the three-way catalyst.
The connection circuit, circuit arrangement, etc. between the controller and each device component are easy to implement in the field and are not described herein again.
Preferably, as shown in fig. 1, the monitoring device 10 is in wireless communication with the controller 370.
According to the self-adaptive adsorption treatment device for the urban street valley automobile exhaust, the monitoring device, the refrigerating cavity, the Peltier, the first deposition cavity, the sequentially arranged flow dividing column, the activated carbon adsorber, the catalytic adsorber and the negative pressure fan are matched with one another, so that the purpose of self-adaptive adsorption filtration of the urban street valley automobile exhaust emission is achieved, the exhaust can be purified step by step in a targeted manner, the purification efficiency is high, the concentration of the urban street valley automobile exhaust is reduced, and the problem of atmosphere pollution caused by automobile exhaust enrichment due to poor diffusion conditions of the urban street valley is solved. The monitoring device triggers the adsorption filtering device to automatically respond and close, so that the energy consumption is reduced, and the adsorption requirement can be met to the maximum extent.
Preferably, the catalytic adsorber 350 is a three-way catalyst.
Preferably, the activated carbon adsorber 340 is a porous structure.
Preferably, a partition plate 323 is disposed above the first deposition chamber 320; the bottom of the clapboard 323 is provided with a plurality of conical flow diverters 322; through holes 324 are arranged between the flow diverter 322.
Preferably, the self-adaptive adsorption treatment equipment for the urban street valley automobile exhaust further comprises a post-treatment device 40; the post-treatment device 40 is connected with the adsorption filtering device 30; the post-processing device 40 is internally provided with an activated carbon adsorber 340, a catalytic adsorber 350 replacing device, and a first deposition chamber 320 and a second deposition chamber 333 cleaning device.
In specific implementation, as shown in fig. 4, the self-adaptive adsorption treatment equipment for urban street automobile exhaust further includes a post-treatment device 40; the post-treatment device 40 is connected with the adsorption filtering device 30; the post-processing device 40 is internally provided with an activated carbon adsorber 340, a catalytic adsorber 350 replacing device, and a first deposition chamber 320 and a second deposition chamber 333 cleaning device. The replacing device comprises a timing module, an automatic locking assembly, a sliding rail, a feeding mechanism and a storage bin, and the timing module is used for timing the time required for replacing parts; the storage bin can store components such as an activated carbon adsorber 340, a catalytic adsorber 350 and the like; the components in the storage bin can be transferred onto the sliding rail through the feeding mechanism; the parts can be conveyed to the positions needing to be installed through the slide rails; the activated carbon adsorber 340 and the catalytic adsorber 350 can be automatically disassembled and assembled through the automatic locking assembly; the timing device, the feeding mechanism, the sliding rail and the automatic locking assembly are all in communication connection with the controller 370;
the cleaning device is a plurality of adsorption pipelines, the pipelines are connected with a negative pressure device, the pipelines are respectively communicated with the first deposition groove 321 and the second deposition groove 334, particles or gasoline in the first deposition groove 321 and the second deposition groove 334 are respectively adsorbed to the storage device for storage through adsorption of the pipelines, and the gasoline can be recycled. The first deposition chamber 320, the activated carbon adsorber 340, the catalytic adsorber 350 and the second deposition chamber 333 are cleaned or replaced by the post-treatment device 40 for the purpose of regular maintenance of the equipment.
Preferably, the timing device, the feeding mechanism, the sliding rail and the automatic locking assembly are available in the art and are not described in detail herein.
Preferably, the inner walls of the refrigeration chamber 310 and the first deposition chamber 320 are provided with anti-sticking layers.
The present invention also provides the following examples of the preparation of the release layer
Example 1
Putting 15 parts of polyvinyl ethyl ether and 30 parts of thermoplastic resin into a stirring and grinding machine and stirring for 1.5 hours, wherein the speed of the stirring and grinding machine is 800 rpm; then 12 parts of polytetrafluoroethylene concentrated solution, 5 parts of nylon, 10 parts of vegetable butanediol and 20 parts of toluene are added and ground for 2 hours, wherein the speed of a stirring grinder is increased to 8000rpm, and the material is made to have the fineness of less than 100 mu m to prepare the coating.
Example 2
Putting 20 parts of polyvinyl ethyl ether and 45 parts of thermoplastic resin into a stirring and grinding machine and stirring for 1.5 hours, wherein the speed of the stirring and grinding machine is 800 rpm; then 15 parts of polytetrafluoroethylene concentrated solution, 8.5 parts of nylon, 13.5 parts of vegetable butanediol and 30 parts of toluene are added and ground for 2 hours, wherein the speed of a stirring grinder is increased to 8000rpm, and the material is made to have the fineness of less than 100 mu m, so that the coating is prepared.
Example 3
Putting 18 parts of polyvinyl ethyl ether and 38 parts of thermoplastic resin into a stirring and grinding machine and stirring for 1.5 hours, wherein the speed of the stirring and grinding machine is 800 rpm; then 13 parts of polytetrafluoroethylene concentrated solution, 7 parts of nylon, 9 parts of vegetable butyl glycol and 18 parts of toluene are added and ground for 2 hours, wherein the speed of a stirring grinder is increased to 8000rpm, and the material is prepared into a coating after the fineness is smaller than 100 mu m.
The polyvinyl ethyl ether in the above embodiment is 25104-37-4 produced by GmbH of Kadsura Chastetree of old estuary; the thermoplastic resin is SR series acrylic resin produced by Union corporation; the polytetrafluoroethylene adopts a commercially available liquid concentrated solution; the nylon is commercially available nylon; the plant butanediol is Japanese KOKYU;
to examine the practical application of the release layer provided by the present invention, a yytl type release paint 3 coating, commercially available from repute coatings company, was used as comparative example 1. The adhesion and water resistance tests of the anti-adhesion layer in comparative example 1 and each example were performed, and the anti-adhesion layer coating in comparative example 1 and each example was coated on the inner walls of the refrigeration chamber 310 and the first deposition chamber 320 of each city street valley car exhaust gas adaptive adsorption treatment device provided by the present invention, which have the same test environment and conditions, and the gasoline viscosity test was performed for 3 months, and the test results are shown in table 1:
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Adhesion (drawing method)/MPa | 8.3 | 8.5 | 8.6 | 8.5 |
| Water resistance/0 deg.C | Does not foam or fall off | Does not foam or fall off | Does not foam or fall off | Foaming and non-falling |
| Viscosity of gasoline | Level 1 | Stage 2 | Level 1 | Grade 3 |
The test standard of the adhesive force (drawing method)/Mpa is GB/T5210-2006.
The water resistance/0 ℃ test standard is GB/T9274-1988.
The gasoline viscosity testing method comprises the steps of observing the mistaken adhesion condition of the inner walls of the refrigeration cavity 310 and the first deposition cavity 320 after the self-adaptive adsorption treatment device of the urban street valley automobile tail gas coated with the non-stick layer runs for 3 months, and if the thickness of the adhered gasoline is more than 0.2cm, determining the gasoline is grade 3; the thickness of the adhered gasoline is grade 2 if the thickness is 0.2cm-0.05 cm, and grade 1 if the thickness is less than 0.05 cm.
According to the test results, the viscosity of the gasoline is 3 grade in comparison example 1, and the viscosity of the gasoline is 1 grade, 2 grade and 1 grade in examples 1, 2 and 3 respectively, and obviously, due to example 1, the anti-adhesion layer provided by the invention can effectively reduce the adhesion of gasoline molecules to the inner surfaces of the cooling chamber 310 and the first deposition chamber 320 in the tail gas adsorption process, which results in the reduction of the diameter of the air duct and the obstruction of ventilation. According to the invention, the surface tension of the coating can be reduced through the synergistic effect of polytetrafluoroethylene, nylon, polyvinyl ether, thermoplastic resin and plant butanediol, so that the adhesion of gasoline molecules is reduced.
In addition, as can be seen from the above water resistance test, the release layers in examples 1, 2 and 3 still did not foam or fall off after the test for 3 months; in contrast, in comparative example 1, foaming occurred. The polyvinyl ethyl ether and the thermoplastic resin in the invention can improve the swelling resistance of the coating, so that the coating has good water resistance, and the problems of foaming and falling of the coating are avoided.
In the gasoline viscosity test process, the refrigeration cavity 310 and the first deposition cavity 320 of the city street valley automobile tail gas self-adaptive adsorption treatment device in the comparative example 1 generate the spontaneous combustion phenomenon in the first deposition cavity 320 after 15 days of the test. The analysis shows that the phenomenon is caused by static electricity. Because of the friction between the positive and negative ion generators and the air, the first deposition chamber 320 is prone to generate static electricity, and after the static electricity enters the first deposition chamber 320, because the concentration of gasoline molecules in the first deposition chamber 320 is high and the polyvinyl ethyl ether belongs to flammable materials, the combustion and even explosion accidents are easily caused. As is known, materials such as thermoplastic resin, polytetrafluoroethylene and nylon are easy to generate or adsorb static electricity, the plant butanediol provided by the invention not only has a synergistic effect on gasoline adhesion prevention, but also can solve the static electricity problem caused by the materials such as the thermoplastic resin, the polytetrafluoroethylene and the nylon due to excellent moisture retention performance, so that the safety performance of the self-adaptive adsorption treatment device for the urban street valley automobile exhaust provided by the invention is improved. If the plant butanediol component is reduced, the natural antistatic effect cannot be achieved. Through antiseized layer not only can prevent that the inside too much difficult material of deposit of device from leading to the wind channel diameter to reduce and make the problem of ventilating obstructed, also can solve the static problem simultaneously.
Preferably, the thermoplastic resin is at least one of an acrylic resin, a chlorinated rubber, and a vinyl chloride resin.
Preferably, the solvent is at least one of xylene, toluene, ethylbenzene, diethyl ether, ethylene glycol dibutyl ether, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone.
Although terms such as monitoring device, adsorption filtration device, post-treatment device, refrigeration chamber, peltier, first deposition chamber, first deposition tank, flow diverter, partition, through-hole, split-flow column, positive electrical chamber, negative electrical chamber, second deposition tank, activated carbon adsorber, catalytic adsorber, negative pressure fan, controller, and anti-adhesion layer are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an urban street millet automobile exhaust self-adaptation adsorbs deals with and equips which characterized in that: comprises a monitoring device (10) and an adsorption filtering device (30); wherein:
the monitoring device (10) is used for detecting the content of tail gas in the air, the flow rate of the automobile and the meteorological condition; the monitoring device (10) and the adsorption filtering device (30) are arranged on the street lamps at two sides of the road;
the adsorption filtering device (30) comprises a refrigeration cavity (310), a first deposition cavity (320), a flow distribution column (330), an activated carbon adsorber (340), a catalytic adsorber (350) and a negative pressure fan (360) which are sequentially arranged;
the flow dividing column (330) is arranged above the refrigeration cavity (310); a Peltier (311) is arranged above the refrigerating cavity (310); the refrigerating surface of the Peltier (311) faces downwards, and the heating surface faces towards the splitter column (330); one side of the flow dividing column (330) is provided with a positive electric cavity (331), and the other side is provided with a negative electric cavity (332);
the air inlets of the positive electric cavity (331) and the negative electric cavity (332) are communicated with the refrigerating cavity (310) through the first deposition cavity (320), and the air outlets are communicated with the activated carbon adsorber (340) through the second deposition cavity (333); a flow diverter (322) is arranged in the first deposition cavity (320); a first deposition groove (321) is arranged below the flow diverter (322); a second deposition groove (334) is arranged below the second deposition cavity (333); the monitoring device (10) and the negative pressure fan (360) are in communication connection with the controller (370); and triggering a negative pressure fan (360) which is started or closed by a controller (370) according to the monitoring condition of the monitoring device (10).
2. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: the catalytic adsorber (350) is a three-way catalyst.
3. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: the activated carbon adsorber (340) is a porous structure.
4. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: a partition plate (323) is arranged above the first deposition cavity (320); the bottom of the clapboard (323) is provided with a plurality of conical flow diverters (322); through holes (324) are arranged between the flow diverter (322).
5. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: the monitoring device (10) is a tail gas monitoring sensor, an automobile flow sensor and a meteorological sensor.
6. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: also comprises a post-processing device (40); the post-treatment device (40) is connected with the adsorption filtering device (30); an activated carbon adsorber (340), a catalytic adsorber (350) replacing device, a first deposition cavity (320) and a second deposition cavity (333) cleaning device are arranged in the post-processing device (40).
7. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 1, characterized in that: the inner walls of the refrigeration cavity (310) and the first deposition cavity (320) are provided with anti-sticking layers; the anti-sticking layer is prepared from the following components in parts by weight:
30-45 parts of thermoplastic resin
15-20 parts of polyvinyl ethyl ether
10-15 parts of polytetrafluoroethylene
5-9 parts of nylon
5-15 parts of plant butanediol
10-30 parts of a solvent.
8. The city street valley automobile exhaust self-adaptive adsorption treatment equipment of claim 7, characterized in that: the anti-sticking layer is prepared from the following components in parts by weight:
35-40 parts of thermoplastic resin
Polyvinyl ether 17-19 parts
12-13 parts of polytetrafluoroethylene
6-8 parts of nylon
8-10 parts of plant butanediol
15-20 parts of a solvent.
9. The city street valley automobile exhaust self-adaptive adsorption treatment equipment according to claim 7 or 8, characterized in that: the thermoplastic resin is at least one of acrylic resin, chlorinated rubber and vinyl chloride resin.
10. The city street valley automobile exhaust self-adaptive adsorption treatment equipment according to claim 7 or 8, characterized in that: the solvent is at least one of dimethylbenzene, methylbenzene, ethylbenzene, diethyl ether, ethylene glycol dibutyl ether, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone.
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