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

A technology for automobile exhaust and treatment systems, which is applied to exhaust devices, air quality improvement, machines/engines, etc., can solve the problem of prolonging the working time of three-way catalytic converters, blocking the second carrier, and three-way catalytic converters without catalytic converters. abilities, etc.

Active Publication Date: 2021-11-26
宁波明讯实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see Figure 1-2, an environment-friendly automobile exhaust treatment system, comprising a cylinder 1, one end of the cylinder 1 is communicated with an intake pipe 11, the other end of the cylinder 1 is communicated with an outlet pipe 12, and the cylinder 1 is installed with The honeycomb-shaped first carrier 2 is used to catalyze the reduction of automobile exhaust. The first carrier 2 is mainly coated with metals such as platinum and rhodium as a catalyst to catalyze the reduction of nitrogen oxides into nitrogen and oxygen. The cylinder 1 A second carrier 3 is also installed inside for catalytic oxidation of automobile exhaust, the first carrier 2 is close to the intake pipe 11, and the second carrier 3 is close to the outlet pipe 12;

[0042] The second carrier 3 includes a support cylinder 31 installed in the cylinder body 1, and multiple groups of oxidation units 32 are installed in the support cylinder 31, and the oxidation unit 32 includes two oxygen oxidation...

Embodiment 2

[0047] This embodiment is an explanation made on the basis of Embodiment 1, and on the basis of the accompanying drawings of Embodiment 1, please refer to the accompanying drawings again. Figure 3-4 .

[0048] Specifically, the preheating assembly includes a sealing plate 4 and a deflector plate 41 installed in the cylinder body 1, the sealing plate 4 is located between the intake pipe 11 and the first carrier 2, and is used to block The inner space of cylinder body 1 prevents the exhaust gas from being directly transmitted from the inlet pipe 11 to the outlet pipe 12, the first diversion space 13 is formed between the sealing plate 4 and the inlet pipe 11, and the diversion plate 41 is located in the Between the first carrier 2 and the sealing plate 4, a second flow guiding space 14 is formed between the guide plate 41 and the sealing plate 4, and between the guide plate 41 and the first carrier 2 forming a third diversion space 15;

[0049] The sealing plate 4 is also com...

Embodiment 3

[0061] This embodiment is an improvement made on the basis of Embodiment 1, see Figure 1-4 , the oxidation substrate 321 is arranged obliquely; wherein, the oxidation substrate 321 slopes obliquely downward from an end far away from the air outlet pipe 12 to an end close to the air outlet pipe 12 .

[0062] The inclined setting of the oxidation substrate 321 helps the solid particles on the substrate to shake off and slide to the lower right of the cylinder body 1, and it should be noted that the air outlet pipe 12 is also installed at the lower right end of the cylinder body 1, so that these particles can be discharged from the outlet. Trachea 12 cleared out.

[0063] Further, a flow guide assembly 6 is installed in the cylinder body 1; the flow guide assembly 6 includes a flow guide cylinder 61 installed in the cylinder body 1, and a plurality of flow guide substrates installed in the flow guide cylinder 61 62 , there is a gap between adjacent flow-guiding substrates 62 , ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/28F01N3/20F01N3/10F01N3/34F01N13/08
CPCF01N3/106F01N3/2006F01N3/2803F01N3/34F01N13/08Y02A50/20
Inventor 黄绍荣罗署
Owner 宁波明讯实业有限公司
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