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Honeycomb-shaped SCR catalyst rapid aging experimental device

An SCR catalyst and rapid aging technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of long time, high energy consumption, high cost, etc., and achieve the effects of reducing errors, saving costs, and simple structure

Active Publication Date: 2015-05-20
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The road test aging is based on the actual vehicle operation of the test vehicle under various road conditions, and the actual aging of the SCR catalytic converter for a long time and a long distance is high in cost, long in time, and high in energy consumption.

Method used

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  • Honeycomb-shaped SCR catalyst rapid aging experimental device
  • Honeycomb-shaped SCR catalyst rapid aging experimental device
  • Honeycomb-shaped SCR catalyst rapid aging experimental device

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Experimental program
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] The invention is based on simulating the exhaust gas test system of a diesel engine, adopts steel pipe drainage, and introduces a part of the exhaust gas into a honeycomb sample aging device. When the simulated diesel engine exhaust test system is running, the exhaust gas with controllable temperature and flow flows into the exhaust pipe, and part of the flow flows into the honeycomb sample aging device. There is a temperature sensor at the front end of the device to measure the temperature of the honeycomb SCR catalyst for high-temperature rapid aging, and a cooling device at the rear end to reduce the temperature so that the flowmeter can measure the flow rate of the airflow passing through the honeycomb sample aging device. The whole honeycomb sample aging device is to fix the quartz tube in a small steel pipe, and there are many small holes slightly larger than t...

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Abstract

The invention provides a honeycomb-shaped SCR catalyst rapid aging experimental device. The honeycomb-shaped SCR catalyst rapid aging experimental device comprises an exhaust pipe, a flowmeter, a cooling device, a honeycomb sample aging device and a thermocouple, wherein high-low-temperature circulating tail gas from a simulation tail gas test system enters the exhaust pipe, one part of the tail gas enters the honeycomb sample aging device, the thermocouple measures the temperature of an airflow entering the honeycomb sample aging device, and after the temperature of the airflow is lowered by the cooling device, the flow rate of the entire aging process can be measured by virtue of the flowmeter. By adopting the honeycomb-shaped SCR catalyst aging experimental device, the weaknesses that the sample aging cannot be carried out by the existing simulation tail gas test system in a traditional road test aging method can be overcome, a plurality of honeycomb-shaped samples can be integrally aged, the structure is simple, the time cost can be greatly reduced, and the resource is saved.

Description

technical field [0001] The invention relates to a rapid aging test device for an SCR catalyst, in particular to a rapid aging test device for a honeycomb SCR catalyst based on a diesel engine simulated exhaust gas test system. Background technique [0002] Due to its large load capacity, low specific fuel consumption, and high thermal efficiency, diesel engines occupy a position that cannot be ignored in the huge automobile market. Compared with gasoline engines, diesel engines mainly emit nitrogen oxides, NOx, and particulate matter. Diesel engine internal purification technologies mainly include: optimization and improvement of the combustion chamber, electronically controlled fuel injection technology, air intake supercharging and intercooling technology, and multi-valve technology. External control technologies mainly include: filtration and purification technologies for particulate matter, including oxidation catalytic technology, continuous regeneration and capture tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 李杏文吴锋姚栋伟魏铼干旭波张本西
Owner ZHEJIANG UNIV
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