CN216440270U - Non-road mobile engineering machinery tail gas treatment equipment - Google Patents
Non-road mobile engineering machinery tail gas treatment equipment Download PDFInfo
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- CN216440270U CN216440270U CN202122652383.9U CN202122652383U CN216440270U CN 216440270 U CN216440270 U CN 216440270U CN 202122652383 U CN202122652383 U CN 202122652383U CN 216440270 U CN216440270 U CN 216440270U
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Abstract
The utility model discloses tail gas treatment equipment for non-road mobile engineering machinery, and relates to the technical field of pollution prevention and control of non-road mobile machinery. The spraying device is arranged at the top of the reaction tank body, the particle filtering separation layer divides the space of the reaction tank body into an upper space and a lower space, the air inlet pipe is directly introduced into the lower space of the reaction tank body, the vacuum ultraviolet device is arranged in the upper space of the reaction tank body, the particles are intercepted through the gas-solid separation of the particle filtering separation layer, the ascending gas generates hydroxyl with stronger oxidation capacity through the combined action of the vacuum ultraviolet device and the spraying device, NO, CO and CH in tail gas are completely oxidized, and the liquid phase spraying can be used for completely oxidizing the oxidized NO2Reaction absorption and ozone decomposition device will probably remainThe residual ozone is completely decomposed, so that the aim of removing multi-component pollutants by equipment without generating secondary pollutants is fulfilled, and the equipment is simple, efficient, high in durability, low in energy consumption, free of generating secondary pollutants, low in cost, portable, and good in efficiency and environmental friendliness.
Description
Technical Field
The utility model relates to the technical field of pollution control of non-road mobile machinery, in particular to tail gas treatment equipment of non-road mobile engineering machinery.
Background
With the continuous deterioration of the atmospheric composite pollution problem in China, the pollution problem of non-road mobile machinery (such as construction engineering machinery, agricultural machinery and the like) which is one of important emission sources is increasingly concerned by people. With the development of non-road mobile machinery, the non-road mobile engineering machinery has increased production types, expanded application range, increased holding capacity, high concentration of discharged pollutants and the like, the weight of the discharged pollutants is increased day by day, and the discharged pollutants become important factors of environmental pollution. Compared with a road moving source, the construction engineering machinery takes diesel oil and heavy oil as main fuels, the working environment is high in temperature, high in dust and high in vibration, the working state is mostly in a low-speed and heavy-load working state, the arrangement space of a diesel engine post-treatment system is limited, the single-machine emission of pollutants is large, the development and verification period of an exhaust post-treatment technology is longer, and the difficulty is higher. Therefore, the emission of atmospheric pollutants cannot be ignored, and the prevention and the emission reduction of the pollution of non-road mobile machinery become an important task at present. The conventional technology for diesel engine exhaust aftertreatment of the current engineering machinery mainly comprises a diesel engine oxidation catalytic conversion technology (DOC), a diesel engine particle trapping technology (DPF), a selective catalytic reduction technology (SCR) and a nitrogen oxide storage reduction technology (NSR) which are combined, the system needs a certain emission temperature, the regeneration technology problem and the durability problem exist, and the processing units are assembled in the same system, so that the assembly system is large in size, high in cost and unacceptable. Therefore, a simple and efficient tail gas treatment device for the non-road mobile engineering machinery is required to be researched and developed, the tail gas of the engineering machinery for construction under different operation modes can be effectively controlled, and the pollution problem of the engineering machinery for construction is solved.
CN206274013U discloses a tail gas purification device for non-road mobile machinery, which comprises a housing, wherein one end of the housing is provided with an air outlet, the other end of the housing is communicated with an air inlet unit, the air inlet unit is detachably connected with the housing, and the air inlet unit is hermetically connected with a connecting pipe for connecting with an exhaust pipe of the non-road mobile machinery; the shell is provided with a hollow inner cavity, a filtering unit is arranged at one end, close to the air inlet unit, in the inner cavity, and a power unit used for driving air to flow from the air inlet unit to the air outlet directionally is arranged at one end, close to the air outlet, in the inner cavity. This tail gas cleanup unit of non-road mobile machinery only filters tail gas, reduces the emission of particulate matter wherein, does not handle to chemical composition such as NO, CO and CH in the non-road mobile machinery tail gas, and the harmful substance is handled not thoroughly, still needs further to carry out the improvement of tail gas treatment device to reduce the harm of tail gas emission to human health and environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defect and the defect of poor treatment effect of the existing tail gas treatment equipment for the non-road mobile engineering machinery on particulate matters, NO, CO, CH and other harmful substances in tail gas, and provides the tail gas treatment equipment for the non-road mobile engineering machinery.
The above purpose of the utility model is realized by the following technical scheme:
a non-road mobile engineering machinery tail gas treatment device comprises a reaction tank body, a gas inlet pipe, a spraying device, a vacuum ultraviolet device, a particle filtering separation layer, an ozone decomposition device and a gas outlet pipe,
the spraying device is arranged at the top of the reaction tank body, the particle filtering separation layer is arranged at the lower part of the reaction tank body and divides the space of the reaction tank body into an upper space and a lower space, the air inlet pipe is directly introduced into the lower space of the reaction tank body from the upper part and is communicated with the lower space, the vacuum ultraviolet device is arranged in the upper space of the reaction tank body, the air outlet pipe is arranged at the top of the reaction tank body, and the ozone decomposition device is arranged in the air outlet pipe pipeline of the reaction tank body.
In the tail gas treatment equipment for the non-road mobile engineering machinery, polluted tail gas can be directly introduced into the lower space of the reaction tank body through the gas inlet pipe and enter the bottom of the reaction tank, a particle filtering separation layer arranged at the lower part of the reaction tank separates particles in the inlet gas from gas, the particles are deposited in the lower space of the reaction tank body and are deposited on the lower side surface of the separation layer, and the gas rises to the upper space of the reaction tank body through the particle filtering separation layer.
When gas goes upwards, the vacuum ultraviolet device above the particle filtering separation layer starts to work, oxygen of the gas can be converted into active ozone and active oxygen species, the spraying device positioned at the top of the reaction tank body starts to spray, hydroxyl with stronger oxidizing capability can be generated while liquid phase spraying is carried out, and NO, CO and CH in tail gas can be completely oxidized into NO in the gas going upwards process2、CO2And H2And O. The partial oxidation has high efficiency and low energy consumption, and can completely oxidize pollutants.
And the liquid phase is sprayed and placed at the top end of the reaction tank, and the liquid phase is opposite to the upward gas direction while being sprayed downwards, so that the liquid phase can be fully contacted with the gas. The liquid phase is sprayed into mixed solution of sodium sulfite and sodium thiosulfate with different proportions, and oxidized NO can be obtained2The reaction is absorbed to generate harmless nitrate, the service life is long, and no hidden trouble of secondary pollutant generation exists.
And further, the gas after being sprayed and absorbed continuously moves upwards to the gas outlet pipe, and the ozone decomposition device is arranged in the gas outlet pipe of the reaction tank body to completely decompose the possibly residual ozone, so that the aim of removing multi-component pollutants by the equipment and simultaneously not generating secondary pollutants is fulfilled.
The non-road mobile engineering machinery tail gas treatment equipment can integrally remove various pollutants (nitrogen oxides, carbon monoxide, hydrocarbons and particulate matters) in engineering machinery tail gas, is simple and efficient, has high durability and low energy consumption, and does not generate secondary pollutants. And the reaction device is low in cost and portable, can solve the problems of large volume, high cost and the like of a multi-unit assembly system, and has better high efficiency and environmental protection.
And then the particles deposited on the lower side surface of the separation layer are washed to a deposition bottom surface with a certain angle under the spraying effect. A drain outlet is arranged at the lower oblique corner, so that the liquid-phase spraying liquid can be replaced, and accumulated dust can be cleaned; the liquid inlet is arranged on the inclined upper part of the deposition surface, and the liquid phase can be supplemented in time through the liquid inlet.
Preferably, two side walls of the lower space of the reaction tank body are respectively provided with a liquid inlet and a sewage outlet.
The lower space of the reaction tank body is provided with a drain outlet, so that the liquid-phase spraying liquid can be replaced, and the accumulated dust can be cleaned. Meanwhile, the particles deposited on the lower side surface of the separation layer are washed to the bottom surface of the deposition layer under the spraying effect and can be discharged through a sewage draining outlet.
The lower space of the reaction tank body is provided with a liquid inlet, and the liquid phase can be supplemented in time through the liquid inlet.
Preferably, the space below the tank body is also provided with a liquid phase circulating pipe which is communicated with the liquid inlet end of the spraying device.
During liquid phase sprays, after the liquid phase solution that sprays absorbs nitrogen oxide among them when gas contacts, can play the effect of washing the particulate matter in the particle filtration separation layer, wash the particulate matter to deposit the face below, the washing liquid that sprays of retort body upper portion space still can be under the traction of above pump by the circulation of liquid phase circulating pipe to the spraying equipment circulation reaction at top, can practice thrift the liquid that sprays, can further compress the processing waste liquid again.
Preferably, the bottom of the reaction tank body is an inclined bottom, and the sewage draining outlet is arranged at an inclined lower corner. The bottom of the reaction tank body is inclined, so that the sediment sprayed and washed is favorably deposited on a sewage discharge outlet under the action of gravity, the sewage is conveniently discharged, and meanwhile, the bottom cleaning and the cyclic utilization of the spraying liquid are favorably realized due to the downward inclination.
Preferably, the vacuum ultraviolet device is 4 vacuum ultraviolet lamps uniformly distributed in the upper space of the reaction tank body.
Preferably, the 4 vacuum ultraviolet lamps are arranged in parallel with the direction of the air flow, so that the contact area between the air flow and the ultraviolet lamps is increased, and the treatment time is prolonged.
Preferably, the pipe diameter of the vacuum ultraviolet lamp is about 1-4 cm.
The length of the vacuum ultraviolet lamp is close to the height of the upper space of the filtering and separating layer of the reaction tank body.
Preferably, the reactor tank, the spraying device and the liquid phase circulating pipe are all made of stainless steel with polytetrafluoroethylene lining. The stainless steel with the polytetrafluoroethylene lining is selected for the tank body, the spraying device and the liquid phase circulating pipe, and the stainless steel is stable in material and corrosion resistant, so that the use requirement of equipment can be met.
Preferably, the particulate filtration separation layer is a honeycomb ceramic filtration layer. To increase the durability of the particulate filter separation layer, the material of the honeycomb ceramic filter layer may be selected to be a stronger, more corrosion resistant cordierite.
Further preferably, the particle internal diameter is in the order of micrometers.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model discloses a non-road mobile engineering machinery tail gas treatment device, wherein a spraying device is arranged at the top of a reaction tank body, a particle filtering separation layer divides the space of the reaction tank body into an upper space and a lower space, an air inlet pipe is directly introduced into the lower space of the reaction tank body, a vacuum ultraviolet device is arranged in the upper space of the reaction tank body, particles are intercepted through gas-solid separation of the particle filtering separation layer, an ascending gas generates hydroxyl with stronger oxidation capacity through the combined action of the vacuum ultraviolet device and the spraying device, and in the ascending process of the gas, the hydroxyl is generatedCan completely oxidize NO, CO and CH in the tail gas into NO2、CO2And H2O, high oxidation efficiency, low energy consumption, complete oxidation of pollutant, liquid phase spraying of mixed solution of sodium sulfite and sodium thiosulfate in different proportion, and oxidation of NO2The reaction is absorbed to generate harmless nitrate, the service time is long, the hidden danger of secondary pollutant generation is avoided, and the ozone decomposition device at the outlet can completely decompose residual ozone, so that the aim of removing multi-component pollutants by the equipment and simultaneously not generating secondary pollutants is fulfilled.
The non-road mobile engineering machinery tail gas treatment equipment can integrally remove various pollutants (nitrogen oxides, carbon monoxide, hydrocarbons and particulate matters) in engineering machinery tail gas, is simple and efficient, has high durability and low energy consumption, and does not generate secondary pollutants. And the reaction device is low in cost and portable, can solve the problems of large volume, high cost and the like of a multi-unit assembly system, and has better high efficiency and environmental protection.
Drawings
Fig. 1 is a schematic structural view of the tail gas treatment equipment of the non-road mobile construction machine of embodiment 1.
Fig. 2 is a schematic structural view of the tail gas treatment equipment of the non-road mobile construction machine of embodiment 2.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1
A non-road mobile engineering machinery tail gas treatment device is shown in figure 1: the equipment comprises a reaction tank body 1, an air inlet pipe 2, a spraying device 3, a vacuum ultraviolet device 4, a particle filtering and separating layer 5, an ozone decomposing device 6 and an air outlet pipe 7,
spray set sets up 3 at the top of retort body 1, the particle filtration separation layer sets up the lower part at retort body 1, separate retort body space for upper portion space and lower part space, intake pipe 2 is by the lower part space that upper portion directly lets in retort body 1, with lower part space intercommunication, vacuum ultraviolet device 4(4 evenly distributed, and with air current direction parallel arrangement's vacuum ultraviolet lamp) set up in retort body 1's upper portion space, outlet duct 7 sets up the top at retort body 1, ozone decomposition device 6 sets up in retort body 1's outlet duct 7's pipeline.
The tank body and the spraying device are made of stainless steel with polytetrafluoroethylene lining.
Example 2
A non-road mobile engineering machinery tail gas treatment device is shown in figure 2: the equipment comprises a reaction tank body 1, an air inlet pipe 2, a spraying device 3, a vacuum ultraviolet device 4, a particle filtering and separating layer 5, an ozone decomposing device 6 and an air outlet pipe 7,
spray set sets up 3 at the top of retort body 1, the particle filtration separation layer sets up the lower part at retort body 1, separate retort body space for upper portion space and lower part space, intake pipe 2 is by the lower part space that upper portion directly lets in retort body 1, with lower part space intercommunication, vacuum ultraviolet device 4(4 evenly distributed, and with air current direction parallel arrangement's vacuum ultraviolet lamp) set up in retort body 1's upper portion space, outlet duct 7 sets up the top at retort body 1, ozone decomposition device 6 sets up in retort body 1's outlet duct 7's pipeline.
The two side walls of the lower space of the reaction tank body 1 are respectively provided with a liquid inlet 8 and a sewage draining exit 9, the bottom of the reaction tank body is an inclined bottom, the sewage draining exit is arranged at an inclined lower angle part, and the lower space of the reaction tank body is also provided with a liquid phase circulating pipe 10 which is communicated with the liquid inlet end of the spraying device 3.
The tank body, the spraying device and the liquid phase circulating pipe are all made of stainless steel with polytetrafluoroethylene lining.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The tail gas treatment equipment for the non-road mobile engineering machinery is characterized by comprising a reaction tank body (1), a gas inlet pipe (2), a spraying device (3), a vacuum ultraviolet device (4), a particle filtering separation layer (5), an ozone decomposition device (6) and a gas outlet pipe (7),
wherein, spray set (3) set up the top at the retort body (1), particle filtration separation layer (5) set up in retort body (1) lower part, will retort body space separation is upper portion space and lower part space, intake pipe (2) are let in retort body lower part space by upper portion is direct, with lower part space intercommunication, vacuum ultraviolet device (4) set up in retort body upper portion space, and outlet duct (7) set up at the retort body top, ozone decomposition device (6) set up in the outlet duct pipeline of the retort body.
2. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in claim 1, wherein two side walls of the lower space of the reaction tank body are respectively provided with a liquid inlet (8) and a sewage outlet (9).
3. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in claim 1, wherein the lower space of the tank body is further provided with a liquid phase circulating pipe (10) which is communicated with a liquid inlet end of the spraying device (3).
4. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in claim 2, wherein the bottom of the reaction tank body is an inclined bottom, and the sewage draining outlet is arranged at an inclined lower corner.
5. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in claim 1, wherein the vacuum ultraviolet device is 4 vacuum ultraviolet lamps uniformly distributed in the upper space of the reaction tank body.
6. The tail gas treatment device of the non-road mobile engineering machinery according to claim 5, wherein the 4 vacuum ultraviolet lamps are arranged in parallel with the direction of the gas flow.
7. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in any one of claims 5 or 6, wherein the pipe diameter of the vacuum ultraviolet lamp is about 1-4 cm.
8. The tail gas treatment equipment for the non-road mobile engineering machinery as claimed in any one of claims 1 to 6, wherein the reactor tank, the spraying device and the liquid phase circulation pipe are all made of stainless steel with polytetrafluoroethylene lining.
9. The tail gas treatment equipment of the non-road mobile engineering machinery according to any one of claims 1 to 6, wherein the particle filtering separation layer is a honeycomb ceramic filtering layer.
10. The exhaust gas treatment device of the non-road mobile construction machine according to claim 9, wherein the particle internal diameter of the particle filtration separation layer is in the micron order.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021204932890 | 2021-03-08 | ||
| CN202120493289 | 2021-03-08 |
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| Publication Number | Publication Date |
|---|---|
| CN216440270U true CN216440270U (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122652383.9U Active CN216440270U (en) | 2021-03-08 | 2021-11-01 | Non-road mobile engineering machinery tail gas treatment equipment |
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| CN (1) | CN216440270U (en) |
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- 2021-11-01 CN CN202122652383.9U patent/CN216440270U/en active Active
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