CN110219719B - Constant pressure difference wetting surface tail gas particle adsorption and purification device - Google Patents
Constant pressure difference wetting surface tail gas particle adsorption and purification device Download PDFInfo
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- CN110219719B CN110219719B CN201910429059.5A CN201910429059A CN110219719B CN 110219719 B CN110219719 B CN 110219719B CN 201910429059 A CN201910429059 A CN 201910429059A CN 110219719 B CN110219719 B CN 110219719B
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 116
- 238000000746 purification Methods 0.000 title claims abstract description 18
- 238000009736 wetting Methods 0.000 title claims abstract description 15
- 239000002245 particle Substances 0.000 title abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010010741 Conjunctivitis Diseases 0.000 description 1
- 208000028006 Corneal injury Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 210000003780 hair follicle Anatomy 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000106 sweat gland Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to an isobaric differential wetting surface tail gas particle adsorption purification device, which comprises a box body, a water tank and a plurality of adsorption units, wherein the box body is provided with an air inlet and an air outlet; the adsorption unit comprises a support plate, an adsorption substrate and a high-temperature resistant adsorption layer, a water injection groove is reserved between the adsorption substrate and the support plate, the adsorption substrate is provided with a plurality of water seepage holes, and the high-temperature resistant adsorption layer is attached to the side surface of the adsorption substrate; the water injection groove is communicated with the water tank, so that water of the water tank is injected into the water injection groove and is permeated into the high-temperature resistant adsorption layer through the water permeation hole to form a uniform water film; the bottom of the box body is provided with water, and the bottom of the adsorption unit is spaced from the water surface. When in use, a part of tail gas is in flapping contact with the water surface at the bottom of the box body, and adsorbed particles are settled; the other part of tail gas moves in the box body and collides with the water film of the high-temperature resistant adsorption layer of the adsorption unit, particles in the tail gas are soaked in water and weight increased to be settled at the bottom of the box body, and after the tail gas is treated by the method, the tail gas is discharged into the air through the air outlet, so that the structure is simple, and the adsorption effect is good.
Description
Technical Field
The invention relates to the technical field of diesel engine tail gas purification, in particular to an isobaric differential wetting surface tail gas particle adsorption purification device.
Background
Diesel engines are widely accepted because of strong dynamic property, good economic performance and high thermal efficiency, and are widely applied in the field of vehicles. The pollution to the environment caused by the additional tail gas emission is also more and more serious, so that the control and the treatment of the automobile tail gas emission are enhanced. The pollutants discharged by the automobile exhaust include carbon monoxide, hydrocarbon, oxynitride and other solid particles which have adverse effects on human bodies. The solid particles have complex components and strong adsorption capacity, can adsorb various metal dust, benzopyrene which is a strong cancerogenic substance, pathogenic microorganisms and the like, and the solid suspended particles enter the lung of a human body along with respiration and stay at different parts of the respiratory tract, so that respiratory diseases are easily caused; when suspended particles accumulate to a critical concentration, malignant tumors may be stimulated; in addition, the suspended particles can directly contact the skin and eyes, clog hair follicles and sweat glands of the skin, cause dermatitis and conjunctivitis, and even may cause corneal damage. Therefore, the solid particles in the automobile exhaust are directly discharged into the air, which has great harm to the environment and seriously affects the life safety of people. In conclusion, reducing the exhaust emission of automobiles gradually becomes a measure for the environmental protection capability of a city.
The existing main measures for reducing the emission of the diesel engine are divided into pretreatment, internal treatment and post-treatment of tail gas. The pretreatment mainly improves the quality of diesel oil; the purification in the machine mainly improves the combustion process; the post-treatment mainly uses a particulate filter (DPF), an oxidation catalyst (DOC), or the like to reduce the PM emission. However, the existing machine post-treatment equipment is complex, high in cost and poor in adsorption effect.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the tail gas particle adsorption purification device with good adsorption effect and simple structure and with equal pressure difference wetting surface.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the tail gas particle adsorption purification device comprises a box body, a water tank and a plurality of adsorption units arranged in the box body, wherein the box body is provided with an air inlet and an air outlet, and the water tank is arranged at the top of the box body; each adsorption unit comprises a support plate, an adsorption substrate and a high-temperature resistant adsorption layer, the adsorption substrate is arranged on the side of the support plate, a water injection groove is reserved between the adsorption substrate and the support plate, the adsorption substrate is provided with a plurality of water seepage holes, and the high-temperature resistant adsorption layer is attached to the side of the adsorption substrate far away from the support plate; the water injection groove is communicated with the water tank, so that water of the water tank is injected into the water injection groove and permeates into the high-temperature resistant adsorption layer through the water seepage holes to form a uniform water film; the bottom of the box body is provided with water, and the bottom of the adsorption unit is spaced from the water surface at the bottom of the box body.
Preferably, the adsorption units are transversely arranged in parallel, and gaps for the tail gas to pass through are reserved between two adjacent adsorption units.
Preferably, the pore diameter of the water seepage holes at the upper part of the adsorption substrate is larger than that of the lower part, and/or the distribution density of the water seepage holes at the upper part of the adsorption substrate is larger than that of the lower part, so that the outer surface of the high-temperature resistant adsorption layer forms a uniform water film under the action of water pressure.
Preferably, the water level in the water tank can be adjusted to adjust the pressure in the water injection tank, thereby adjusting the water seepage quantity of the water seepage hole.
Preferably, both sides of the supporting plate of each adsorption unit are respectively provided with an adsorption substrate and a high-temperature resistant adsorption layer.
Preferably, the bottom of the box body is provided with a plurality of mounting grooves, and the tops of the plurality of adsorption units are respectively inserted into the plurality of mounting grooves, so that the water injection groove is communicated with the water tank.
Preferably, a drain hole is arranged at the lower part of the box body.
Preferably, the bottom of the adsorption unit is provided with a sealing edge, so that the bottom of the water injection groove is sealed.
Preferably, the water tank is fixedly connected with the tank body through bolts, and a sealing gasket is arranged between the tank body and the water tank.
Preferably, a spoiler is arranged on the inner wall of the box body.
The invention has the beneficial effects that:
when the device is used, tail gas enters the box body from the air inlet, a part of the tail gas is in flapping contact with the water surface at the bottom of the box body, particles of the tail gas are adsorbed on the water surface, and the adsorbed particles are settled; the other part of tail gas moves in the tank body and collides with a water film formed by the high-temperature resistant adsorption layer of the adsorption unit (namely, water in the water tank permeates into the high-temperature resistant adsorption layer through the water injection groove and then the water seepage holes, so that the high-temperature resistant adsorption layer is soaked and a water film is formed), and particles in the tail gas are soaked in water and weight is increased, so that the particles are settled to the bottom of the tank body. After the water film adsorbs the particulate matters and subsides, water can form a water film capable of adsorbing the particulate matters of the tail gas again on the high-temperature resistant adsorption layer through the water seepage holes due to the water pressure effect in the water injection groove. The tail gas is discharged into the air through the air outlet after the treatment. Compared with the prior art, the isobaric differential wetting surface tail gas particle adsorption purification device disclosed by the invention is simple in structure and good in adsorption effect.
Drawings
Fig. 1 is a perspective view of an isobaric differential wetting surface exhaust particle adsorption purification device of the present invention.
Fig. 2 is an exploded view of the isopiestic differential wetting surface exhaust particulate adsorption purification device of the present invention.
Fig. 3 is a schematic structural diagram of the adsorption unit.
Fig. 4 is a schematic structural diagram of the adsorption substrate.
Reference numerals:
the box body 1, the air inlet 11, the air outlet 12, the drain hole 13 and the spoiler 14;
a water tank 2 and a mounting groove 21;
adsorption unit 3, backup pad 31, adsorption base plate 32, high temperature resistant adsorbed layer 33, water injection groove 34, infiltration hole 35.
Detailed Description
The present invention will be described in detail with reference to specific embodiments and drawings.
The adsorption and purification device for the tail gas particles with the equal pressure difference wetting surface in the embodiment, as shown in fig. 1 to 4, comprises a box body 1, a water tank 2 and a plurality of wavy adsorption units 3 vertically arranged in the box body 1, wherein the adsorption units 3 are transversely arranged in parallel, and a gap for the tail gas to pass through is reserved between every two adjacent adsorption units 3. The box 1 is provided with an air inlet 11 and an air outlet 12, the lower part of the box 1 is provided with a drain hole 13, and the drain hole 13 is in a normally closed state. The inner wall of the box body 1 is provided with a spoiler 14 for increasing the collision probability of the tail gas in the box body 1 and the adsorption unit 3. The water tank 2 is arranged at the top of the tank body 1, the water tank 2 is fixedly connected with the tank body 1 through bolts, and a sealing gasket is arranged between the tank body 1 and the water tank 2. The bottom of the box body 1 is provided with a plurality of mounting grooves 21, and the tops of the plurality of adsorption units 3 are respectively fixedly inserted into the plurality of mounting grooves 21. Each adsorption unit 3 comprises a support plate 31, two adsorption substrates 32 and a high-temperature resistant adsorption layer 33, wherein the adsorption substrates 32 are arranged on two sides of the support plate 31 in parallel, and the high-temperature resistant adsorption layer 33 is attached to the side surface, away from the support plate 31, of the adsorption substrate 32. A water injection groove 34 is reserved between the adsorption substrate 32 and the support plate 31, and an edge seal is arranged at the bottom of the adsorption unit 3, so that the bottom of the water injection groove 34 is sealed, and the water injection groove 34 is communicated with the water tank 2, so that water of the water tank 2 is injected into the water injection groove 34. The adsorption substrate 32 is provided with a plurality of water seepage holes 35, the water seepage holes 35 penetrate through two side surfaces of the adsorption substrate, water in the water injection groove 34 seeps into the high temperature resistant adsorption layer 33 through the water seepage holes 35, wets the high temperature resistant adsorption layer 33 and forms a water film for adhering tail gas particles.
The water pressure in the water injection groove 34 from top to bottom gradually increases, in order to form a uniform water film on the high temperature resistant adsorption layer 33, the water seepage holes 35 on the adsorption substrate 32 are in a shape of big top and small bottom and are densely distributed and arranged at the bottom, namely, the pore diameter of the water seepage holes 35 on the upper part of the adsorption substrate 32 is larger than that of the lower part, and the distribution density of the water seepage holes 35 on the upper part of the adsorption substrate 32 is larger than that of the lower part, so that the outer surface of the high temperature resistant adsorption layer 33 forms a uniform water film under the action of water pressure, and the adsorption effect of the high temperature resistant adsorption layer 33 is greatly improved. Or the water penetration holes 35 of the adsorption substrate 32 gradually decrease in diameter from top to bottom, and gradually decrease in density. The water level in the water tank 2 can be adjusted to adjust the pressure in the water injection groove 34, thereby adjusting the water seepage amount of the water seepage hole 35. The bottom of the box body 1 is filled with water, and the bottom of the adsorption unit 3 is spaced from the water surface at the bottom of the box body 1.
When the device is used, tail gas enters the box body 1 from the air inlet 11, a part of the tail gas is in flapping contact with the water surface at the bottom of the box body 1, particles of the tail gas are adsorbed on the water surface, and the adsorbed particles are settled; the other part of the tail gas moves in the box body 1 and collides with the water film of the high-temperature resistant adsorption layer 33 of the adsorption unit 3, and the particulate matters in the tail gas are soaked in water and are increased in weight so as to be settled to the bottom of the box body 1. After the partial water film adsorbs the particles and settles, the water seepage holes 35 can be filled with the water film again in the high temperature resistant adsorption layer 33 due to the water pressure. After the tail gas is treated, the tail gas is discharged into the air through the air outlet 12. When the water at the bottom of the box body 1 is settled and more particles need to be replaced, the water draining holes 13 are opened to drain.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. The constant pressure difference wets the surface and adsorbs the purifying device, characterized by: the adsorption device comprises a box body, a water tank and a plurality of adsorption units arranged in the box body, wherein the box body is provided with an air inlet and an air outlet, and the water tank is arranged at the top of the box body; each adsorption unit comprises a support plate, an adsorption substrate and a high-temperature resistant adsorption layer, the adsorption substrate is arranged on the side of the support plate, a water injection groove is reserved between the adsorption substrate and the support plate, the adsorption substrate is provided with a plurality of water seepage holes, and the high-temperature resistant adsorption layer is attached to the side of the adsorption substrate far away from the support plate; the water injection groove is communicated with the water tank, so that water of the water tank is injected into the water injection groove and permeates into the high-temperature resistant adsorption layer through the water seepage holes to form a uniform water film; the bottom of the box body is provided with water, and the bottom of the adsorption unit is spaced from the water surface at the bottom of the box body;
the pore diameter of the water seepage holes at the upper part of the adsorption substrate is larger than that of the lower part of the adsorption substrate, and/or the distribution density of the water seepage holes at the upper part of the adsorption substrate is larger than that of the lower part of the adsorption substrate, so that the outer surface of the high-temperature resistant adsorption layer forms a uniform water film under the pressure of water;
the water level in the water tank can be adjusted to adjust the pressure intensity in the water injection tank, so as to adjust the water seepage quantity of the water seepage hole;
the two sides of the supporting plate of each adsorption unit are respectively provided with an adsorption substrate and a high-temperature resistant adsorption layer;
the water injection groove is communicated with the water tank.
2. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the adsorption units are transversely arranged in parallel, and gaps for the tail gas to pass through are reserved between two adjacent adsorption units.
3. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the bottom of box is opened there is a plurality of mounting grooves, and the top of a plurality of adsorption units inserts respectively in a plurality of mounting grooves to make water injection groove and water tank intercommunication.
4. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the lower part of the box body is provided with a drain hole.
5. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the bottom of the adsorption unit is provided with an edge sealing, so that the bottom of the water injection groove is sealed.
6. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the water tank is fixedly connected with the box body through bolts, and a sealing gasket is arranged between the box body and the water tank.
7. The isobaric differential wetting surface exhaust particulate adsorption purification device of claim 1, wherein: the inner wall of the box body is provided with a spoiler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429059.5A CN110219719B (en) | 2019-05-22 | 2019-05-22 | Constant pressure difference wetting surface tail gas particle adsorption and purification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429059.5A CN110219719B (en) | 2019-05-22 | 2019-05-22 | Constant pressure difference wetting surface tail gas particle adsorption and purification device |
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| Publication Number | Publication Date |
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| CN110219719A CN110219719A (en) | 2019-09-10 |
| CN110219719B true CN110219719B (en) | 2023-12-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110541743B (en) * | 2019-09-29 | 2024-02-27 | 华南理工大学 | Spiral diesel engine tail gas purifying device and purifying method thereof |
| CN111691950A (en) * | 2020-05-25 | 2020-09-22 | 华南理工大学 | Surface gravel water seepage type tail gas particle adsorption purification device and method |
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| CN105668760A (en) * | 2016-04-06 | 2016-06-15 | 曹辉 | Hollow ceramic plate and generation method of nano water film air bubbles as well as device and application thereof |
| CN109631208A (en) * | 2019-01-15 | 2019-04-16 | 王宝全 | A kind of modular air processing unit |
| CN210509334U (en) * | 2019-05-22 | 2020-05-12 | 东莞理工学院城市学院 | Tail gas purification device utilizing water film to adsorb particles |
-
2019
- 2019-05-22 CN CN201910429059.5A patent/CN110219719B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002303438A (en) * | 2002-04-01 | 2002-10-18 | Takasago Thermal Eng Co Ltd | Air conditioner |
| CN101571306A (en) * | 2008-04-30 | 2009-11-04 | 海斯博特（北京）科技有限公司 | Air purifier |
| CN102933910A (en) * | 2010-05-24 | 2013-02-13 | 株式会社大气社 | Air purifier and humidifier |
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