A kind of environment-friendly automobile exhaust gas treatment system and treatment method

Abstract

The invention relates to the technical field of tail gas treatment, and discloses an environment-friendly automobile tail gas treatment system and a treatment method, wherein the environment-friendly automobile tail gas treatment system includes a cylinder body, one end of the cylinder body is connected with an intake pipe, and the cylinder body The other end of the cylinder is connected with an outlet pipe, and a honeycomb-shaped first carrier is installed in the cylinder for catalytic reduction of automobile exhaust, and a second carrier is installed in the cylinder for catalytic oxidation of automobile exhaust. A carrier is close to the air inlet pipe, and the second carrier is close to the air outlet pipe. In the environment-friendly automobile exhaust treatment system, when the exhaust gas enters the second carrier, the oxidation substrate in each oxidation unit in the second carrier will vibrate under the influence of the exhaust gas flow, and this vibration is easy to oxidize the solid particulate matter on the substrate Shock off, so as to avoid a large amount of solid particles from accumulating on the oxidation substrate, which is helpful to the catalytic oxidation of the exhaust gas by the second carrier.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to an environment-friendly automobile tail gas treatment system and a treatment method. Background technique [0002] Automobile exhaust pollution is environmental pollution caused by exhaust gas emitted by automobiles. The main pollutants in automobile exhaust are carbon monoxide, hydrocarbons, nitrogen oxides and solid particles suspended in automobile exhaust. The air is seriously polluted. [0003] In order to reduce the air pollution caused by automobile exhaust, in the prior art, people usually install a three-way catalytic converter on the exhaust pipe of the automobile to purify the exhaust gas of the automobile. The interior of the three-way catalytic converter mainly includes two honeycomb-shaped carriers , these two carriers can be ceramic or metal, the first carrier is mainly coated with metals such as platinum and rhodium as catalysts, which are used to cata...

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Problems solved by technology

[0004] The three-way catalytic converter does not have the ability to catalyze at room temperature, and its catalyst must be heated to a certain temperature to have the ability to oxidize or reduce. However, the temperature in the exhaust pipe of the existing car cannot reach the work of the three-way catalytic converter when it is just started. The best solution is to preheat the three-way catalytic converter. However, there is no preheating equipment in the existing three-way catalytic converter, which prolongs the working time of the three-way catalytic converter. At the same time, the three-way catalytic converter The second carrier of the catalytic converter will form water during operation. After condensation, the water will easily combine with the suspended solid particles in the exhaust gas and adhere to the second carrier. If things go on like this, it will easily block the second carrier.

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