CN209925064U

CN209925064U - Tail gas purification device for preventing automobile tail gas diffusion

Info

Publication number: CN209925064U
Application number: CN201920773195.1U
Authority: CN
Inventors: 李艳菲
Original assignee: Xiamen University Tan Kah Kee College
Current assignee: Xiamen University Tan Kah Kee College
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-10
Anticipated expiration: 2029-05-27

Abstract

The utility model relates to a prevent tail gas cleanup unit of automobile exhaust diffusion, including storage water tank, electric pump, spray tube, spraying baffle, collector tube and header tank, storage water tank and electric pump are installed on the frame, the storage water tank is connected with the electric pump through low-pressure pipeline, the spray tube is hollow ring structure, the ring portion equipartition of spray tube has the distributing pipe, and each distributing pipe front end collects, and the rear end is equipped with the nozzle respectively, the electric pump is through the portion's intercommunication that collects of high-pressure pipeline and spray tube, the spray tube is established on the blast pipe of car through well kenozooecium cover, the back lateral part at the spray tube is installed to the spraying baffle, collector tube one end is connected with the spraying baffle, and the other end is connected with the collector tube. The device is not only favorable to preventing automobile exhaust's diffusion, purifies tail gas and reduces discharge temperature, simple structure moreover, easily installation realizes.

Description

Tail gas purification device for preventing automobile tail gas diffusion

Technical Field

The utility model relates to an automobile exhaust purification device technical field, concretely relates to prevent tail gas purification device of automobile exhaust diffusion.

Background

At present, almost all engine exhaust gas of fuel vehicles is directly discharged into the air through exhaust tail gas pipelines, the tail gas contains a large amount of harmful gases such as sulfide, nitrogen oxide, carbon, lead and the like and inhalable particles, the exhaust emissions are distributed and diffused in the air, the degrees of the harmful gases, floating dust and haze in the air are continuously increased, the living environment of human beings is seriously polluted, and the health of the human beings is threatened.

The purification of waste gas in the automobile manufacturing industry mainly adopts the measures of internal purification and external purification (exhaust aftertreatment), and a closed-loop fuel injection electronic control system is adopted in the automobile manufacturing industry, namely, the closed-loop fuel injection electronic control system is controlled by an oxygen sensor in a feedback mode, and an exhaust gas recirculation (EGR valve) system is used for inhibiting the generation of nitrogen oxides. The external purification is realized by a three-way catalytic purifier (exhaust aftertreatment), which can make harmful components such as CO, HC and NO in the exhaust gas_xThere is a certain drop. Due to a plurality of factors, after the automobile runs for a certain distance, the faults of poisoning failure of the oxygen sensor and the three-way catalyst, blockage of the three-way catalyst, blockage and clamping of the EGR valve by sediments and the like can be caused, so that the problems of abnormal purification in the engine, excessive tail gas and the like can be caused. Many times such problems occur without being noticed and the maintenance of the vehicle does not replace the relevant parts, resulting in the still-running emissions being not purified with illness. Even if the three-way catalyst does not fail, part of harmful gas is still discharged and diffused in the air, and even rolling dense smoke is not blocked. This is because exhaust gas recirculation is not performed to maintain idle stability during warm-up and at idle of the exhaust gas recirculation system, and exhaust gas recirculation is not performed to provide sufficient engine power at full load and high speed, so that it is inevitable that the emission of NOx is still too high to be limited.

To inhibit NO_xIn the emission of the exhaust gas, an SCR system, i.e., a selective catalytic reduction exhaust gas aftertreatment (SCR) system for vehicles, which is a technology for reacting ammonia generated by a urea reaction with exhaust gas of an automobile, has been developed, but the SCR is a complicated system and has the following disadvantages in addition to a complicated structure: 1. the SCR is complex to install, costly and must be installed before the vehicle leaves the factory. 2. The production of urea also canCausing secondary pollution. 3. SCR has no effect on pollutants such as CO, CH, particles and the like in tail gas, and other equipment is required to be additionally installed. 4. SCR has high requirements on automobile intelligence, and easily causes the automobile to be incapable of igniting. 5. Most vehicles equipped with an SCR aftertreatment system incur new points of vehicle failure. Resulting in a low prevalence of SCR now. Soot particle cleaning is used in diesel vehicles, but also with microporous filters. The filter operates for a period of time to remove particulates accumulated on the filter element in a timely manner, otherwise exhaust resistance is increased. Some have fans installed in the exhaust port to prevent the filter from being blocked, and some have substances blocked in the filter port burnt by re-spraying gasoline and then igniting. However, these methods produce new harmful components to be released, and cannot purify waste gas, especially cannot prevent pollution caused by harmful tail gas diffusion in urban environment, and also can raise environmental temperature.

Disclosure of Invention

An object of the utility model is to provide a prevent tail gas cleanup unit of automobile exhaust diffusion, the device not only are favorable to preventing automobile exhaust's diffusion, tail gas purification and reduction emission temperature, simple structure moreover, easily installation realization.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a prevent tail gas cleanup unit of automobile exhaust diffusion, includes storage water tank, electric pump, spray tube, spraying baffle, collector tube and header tank, storage water tank and electric pump are installed on the frame, the storage water tank is connected with the electric pump through low-pressure pipeline, the spray tube is hollow ring shape structure, the ring portion equipartition of spray tube has the distributing pipe, and each distributing pipe front end collects, and the rear end is equipped with the nozzle respectively, the electric pump is through the portion intercommunication that collects of high-pressure pipeline and spray tube, the spray tube is established on the blast pipe of car through well kenozooecium cover, the spraying baffle is installed at the posterolateral part of spray tube, collector tube one end is connected with the spraying baffle, and the other end is connected with the collector tube.

Further, the spray pipe includes inside and outside two circular metal tubes, the ring portion equipartition between inside and outside two circular metal tubes has a plurality of distributing pipes, each distributing pipe front end collects the portion intercommunication with the annular, the annular collects the portion and communicates with high-pressure line, the nozzle is installed respectively to each distributing pipe rear end to the blowout water smoke absorbs automobile exhaust.

Furthermore, the installation angle of each nozzle inclines towards the center of the spray pipe, so that when all the nozzles spray water mist at the same time, a shrinkage-shaped water mist wall is formed, and automobile exhaust is blocked and absorbed.

Furthermore, the spraying baffle comprises an arc-shaped blocking cover and a vertical baffle, the liquid collecting pipe is an arc-shaped liquid collecting pipe, the front end of the arc-shaped blocking cover is installed on the upper portion of the rear side of the spraying pipe, the rear end of the arc-shaped blocking cover is connected with the upper end of the vertical baffle, and the lower end of the vertical baffle is connected with the arc-shaped liquid collecting pipe so as to block sprayed water mist and flow back to the liquid collecting tank after being collected.

Further, the water storage tank is provided with a water filling port, and the liquid collecting tank is provided with a liquid outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the tail gas purifying device is provided with the spraying device at the rear end of the exhaust pipe of the automobile, and the spraying device is used for condensing, reacting and absorbing automobile tail gas by spraying water mist, so that the diffusion of the automobile tail gas is prevented, the tail gas is purified, the emission temperature is reduced, and the secondary pollution is avoided. The collected waste liquid can be further converted into liquid industrial raw materials for reuse, and secondary pollution can not be generated. In addition, the device has the advantages of simple structure, low manufacturing cost, easy manufacture, installation and implementation, strong practicability and wide application prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a water storage tank, 2, an electric pump, 3, a spray pipe, 4, a spray baffle, 5, a liquid collecting pipe, 6, a liquid collecting tank, 7, a low-pressure pipeline, 8, a distribution pipe, 9, a nozzle, 10, a high-pressure pipeline, 11, an annular collecting part, 12, a hollow part, 13, an inner circular metal pipe, 14, an outer circular metal pipe, 15, an arc-shaped baffle cover, 16, a vertical baffle, 17, a water filling opening, 18 and a liquid discharge opening.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses at first remove the SCR system, on the basis of the outer purifier three way catalyst converter of current exhaust aftertreatment, install a tail gas cleanup unit who prevents the diffusion of automobile exhaust on vehicle vent-pipe again, utilize clear water liquid (can add the yellow smoke treatment agent that can eliminate nitrogen oxide) to produce high pressure water smoke and block the diffusion of automobile exhaust, harmful gas harmful component CO who discharges simultaneously, HC, SO, NO etc. have after being absorbed by water smoke and change into harmless gas, some generation acid liquid retrieves, thereby tail gas has been purified.

The utility model provides a prevent tail gas cleanup unit of automobile exhaust diffusion, as shown in figure 1, including storage water tank 1, electric pump 2, spray tube 3, spraying baffle 4, collecting tube 5 and collecting box 6, storage water tank 1 and electric pump 2 install on the frame, storage water tank 1 is connected with electric pump 2 through low-pressure pipeline 7, spray tube 3 is hollow annular structure, spray tube 3's ring portion equipartition has distributing

pipe

8, 8 front ends of each distributing pipe collect, the rear end is equipped with nozzle 9 respectively, electric pump 2 is through the 11 intercommunications of the portion that collects of high-pressure pipeline 10 and spray tube 3, spray tube 3 establishes on the tail pipe of automobile through well kenozooecium 12 cover, spraying baffle 4 installs the rear side portion at

spray tube

3, 5 one end of collecting tube is connected with spraying baffle 4, the other end is connected with collecting box 6. The water storage tank 1 is provided with a water filling port 17, and the liquid collecting tank 6 is provided with a liquid discharging port 18.

Specifically, the spray pipe 3 comprises an inner circular metal pipe 13 and an outer circular metal pipe 14, a plurality of distribution pipes 8 are uniformly distributed on a circular portion between the inner circular metal pipe 13 and the outer circular metal pipe 14, the front ends of the distribution pipes 8 are communicated with an annular collecting portion 11, the annular collecting portion 11 is communicated with a high-pressure pipeline 10, and nozzles 9 are respectively mounted at the rear ends of the distribution pipes 8 to spray water mist and absorb automobile exhaust. The installation angle of each nozzle 9 inclines about 20 degrees towards the center of the spray pipe, so that when all the nozzles spray water mist at the same time, a shrinkage-shaped water mist wall is formed, automobile exhaust is blocked and absorbed, and the diffusion of exhaust smoke dust is prevented.

In order to fully block and collect the sprayed water mist, the spraying baffle 4 (comprising an arc-shaped baffle cover 15 and a vertical baffle 16) is provided with an arc-shaped liquid collecting pipe 5, the front end of the arc-shaped baffle cover 15 is arranged at the upper part of the rear side of the spraying pipe 3, the rear end of the arc-shaped baffle cover 15 is connected with the upper end of the vertical baffle 16, and the lower end of the vertical baffle 16 is connected with the arc-shaped liquid collecting pipe 5 so as to block the sprayed water mist and return to the liquid collecting tank 6 after collection.

The utility model discloses a working process does: 1) when the automobile engine works, the device is started, and the electric pump 2 starts to work. 2) The electric pump 2 pumps water from the water storage tank 1, and the water is pressurized and then conveyed to the spraying pipe 3 through the high-pressure pipeline 10. 3) The spray pipe 3 sprays 1-100 mu m superfine water mist through the distribution pipe 8 and the high-performance nozzle 9 on the spray pipe to block the automobile exhaust, and the superfine water mist fully collides with dust and waste gas in the automobile exhaust to be condensed and reacts. In this embodiment, the nozzles 9 provided at the rear end of the spray pipe 3 are installed at an angle inclined by about 20 ° toward the center of the spray pipe so that when all the nozzles spray mist at the same time, a constricted mist wall is formed to sufficiently block the exhaust gas of the automobile. 4) The water mist absorbing the automobile exhaust is converged to the liquid collecting pipe 5 through the blocking of the spray baffle 4, and then flows back to the liquid collecting tank 6.

The utility model discloses in, there are two kinds of schemes to the purification of automobile exhaust gas, nitrogen oxide:

1. only water is added into the water storage tank.

Water in the water storage tank enters the electric pump through the low-pressure pipeline and pressurizes, and then enters the spray pipe 3 through the high-pressure pipeline, and then continuously sprays out through the nozzle 9, because the nozzle inclines 20 degrees to the center of the circle of the spray pipe, the high-effect dustproof water mist wall of contraction form of catching, reuniting the smoke and dust forms one way, blocks the diffusion of tail gas, and the following reaction can take place for nitrogen oxide and water mist in the tail gas:

2NO + O₂= 2NO₂

3NO₂+ H₂O = 2HNO₃+ NO

4NO + 3O₂+ 2H₂O = 4HNO₃

thus, nitric oxide, nitrogen dioxide, dinitrogen pentoxide, and the like can be dissolved in water. The nitrogen oxides in the flue gas can be reduced by water spraying, and the generated liquid 4HNO₃The collected liquid is collected by the liquid collecting box and can be reused as industrial raw materials, so that waste can be changed into valuable.

2. In the water storage tank, ICN-04 (nitric acid yellow tobacco treating agent) is properly added except water.

ICN-04 is an easily purchased environment-friendly treatment agent, and the ICN-04 is characterized in that:

1) ICN-04 is non-toxic, has no secondary pollution, and is suitable for various environments.

2) ICN-04 can reduce nitrogen oxide into nitrogen gas, and eliminate nitrogen oxide pollution in waste gas completely without toxicity and secondary pollution.

3) The operation is simple, and a certain amount of ICN-04 is directly added into the water storage tank at the water filling port.

4) The cost and operating cost of adding ICN-04 are lower than those of other methods.

Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.

Claims

1. The utility model provides a prevent tail gas cleanup unit of automobile exhaust diffusion, its characterized in that, includes storage water tank, electric pump, spray tube, spraying baffle, collector tube and header tank, storage water tank and electric pump are installed on the frame, the storage water tank is connected with the electric pump through low pressure pipeline, the spray tube is hollow circular ring shaped structure, the ring portion equipartition of spray tube has the distributing pipe, and each distributing pipe front end collects, and the rear end is equipped with the nozzle respectively, the electric pump is through the portion intercommunication that collects of high pressure pipeline and spray tube, the spray tube is established on the blast pipe of car through well kenozooecium cover, the back lateral part at the spray tube is installed to the spraying baffle, collector tube one end is connected with the spraying baffle, and the other end is connected with the collector tank.

2. The device of claim 1, wherein the spray pipe comprises an inner circular metal pipe and an outer circular metal pipe, a plurality of distribution pipes are uniformly distributed on a circular portion between the inner circular metal pipe and the outer circular metal pipe, the front ends of the distribution pipes are communicated with an annular collecting portion, the annular collecting portion is communicated with a high-pressure pipeline, and nozzles are respectively mounted at the rear ends of the distribution pipes to spray water mist to absorb automobile exhaust.

3. The exhaust gas purifying apparatus for preventing the diffusion of automobile exhaust gas according to claim 2, wherein the nozzles are installed at an angle inclined toward the center of the spray pipe to form a constricted water mist wall to block and absorb the automobile exhaust gas when all the nozzles spray the water mist at the same time.

4. The tail gas purification device capable of preventing the diffusion of the automobile tail gas as claimed in claim 1, wherein the spray baffle comprises an arc-shaped baffle cover and a vertical baffle, the liquid collecting pipe is an arc-shaped liquid collecting pipe, the front end of the arc-shaped baffle cover is installed on the upper portion of the rear side of the spray pipe, the rear end of the arc-shaped baffle cover is connected with the upper end of the vertical baffle, and the lower end of the vertical baffle is connected with the arc-shaped liquid collecting pipe so as to block sprayed water mist from flowing back to the liquid collecting tank after being collected.

5. The exhaust gas purifying apparatus for preventing the diffusion of automobile exhaust gas according to claim 1, wherein the water storage tank is provided with a water filling port, and the liquid collecting tank is provided with a liquid discharging port.