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SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment

A catalytic converter and exhaust gas treatment technology, applied in the direction of machines/engines, chemical instruments and methods, mechanical equipment, etc., can solve the problems of system pressure loss, acoustic insertion loss, etc., and achieve good mixing performance, good flow performance, and pressure loss moderate effect

Active Publication Date: 2012-03-14
HANGZHOU YINLUN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 2. System pressure loss
[0016] 4. Acoustic insertion loss

Method used

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  • SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment
  • SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment
  • SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment

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Embodiment Construction

[0031] see figure 1 with figure 2 , an SCR catalytic converter for diesel engine exhaust treatment, including an intake chamber 1, a mixing chamber 2, an air outlet chamber 3, a housing 4, a left baffle 5, a gas inlet pipe 6, a catalyst carrier assembly 7, and a gas return pipe 8, right baffle plate 9, gas outlet pipe 10. The left baffle 5 and the right baffle 9 are installed in the housing 4 at intervals, and the housing 4 is divided into an air inlet chamber 1, a mixing chamber 2 and an air outlet chamber 3; the left baffle 5 separates the air inlet chamber 1 and the mixing chamber 2 , the left baffle 5 is provided with a plurality of openings, which can communicate the inlet chamber 1 and the mixing chamber 2; the right baffle 9 separates the mixing chamber 2 and the outlet chamber 3; the gas inlet pipe 6 is inserted from the upper left end surface of the housing Inside the housing, it passes through the left baffle 5 and is closed and connected with the right baffle 9. ...

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PUM

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Abstract

The invention provides an SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment. The SCR catalytic converter comprises a shell, a left baffle, a right baffle, a gas inlet tube, a gas return pipe, a gas outlet tube and a catalyst carrier component, wherein the left and right baffles are installed in the shell at intervals and divide the shell into a gas suction cavity, a mixed cavity and a gas exhaust cavity; the left baffle is provided with multiple opening holes which can communicate the gas suction cavity with the mixed cavity; the gas inlet tube is inserted in the shell from the left end face of the shell, penetrates through the left baffle and is closely connected with the right baffle, the gas inlet tube is provided with multiple rows of small holes at the position of the mixed cavity; the gas return pipe is inserted from the left baffle, is closely connected with the right baffle and is provided with multiple rows of small holes; the gas outlet tube is inserted in the shell from the right end face of the shell; and the catalyst carrier component is arranged in the mixed cavity, the axial direction of the catalyst carrier component is inparallel to that of the gas inlet tube and is respectively communicated with the gas suction cavity and the gas exhaust cavity. The SCR catalytic converter provided by the invention has the advantages and characteristics of good flow property, better mixing property of exhausted gas and urea and moderate pressure loss, thus having a certain function of noise elimination.

Description

technical field [0001] The invention relates to the field of diesel engine exhaust aftertreatment systems, and more specifically relates to an SCR catalytic converter for diesel engine exhaust treatment. Background technique [0002] Diesel engines have obvious advantages over gasoline engines in terms of power, economy and reliability, especially CO 2 Low emissions, its use has been gradually extended to various types of vehicles. But the biggest problem with diesel engines is nitrogen oxides (NO x ) and particulate matter (PM) emissions are serious. As China's emission control regulations become more and more stringent, as well as the performance and oil quality of domestic diesel engines, internal purification measures alone are insufficient. Therefore, it is necessary to adopt external after-treatment devices to achieve emission targets. [0003] Diesel engine exhaust selective catalytic reduction technology (SCR) is an off-board after-treatment technology for vehicle...

Claims

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Application Information

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IPC IPC(8): F01N3/28B01D53/94
CPCY02T10/12
Inventor 张婷许锦皋李兵周健伟周小燕孔芬霞陆国栋
Owner HANGZHOU YINLUN TECH CO LTD
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