Black smoke and odor treatment + SCR denitrification ----- Wanchun diesel engine test bench exhau
The exhaust purification system of Wanchun diesel engine test bench developed and designed by Hebei Hanlan has solved the long-standing problems in exhaust treatment of engine test benches and brought diesel engine exhaust treatment technology to a new level.
As the world pays more and more attention to environmental protection, the exhaust gas purification of diesel-powered machinery is continuously refined and strengthened. The exhaust gas treatment of diesel engine test benches has always been a difficult problem in diesel engine exhaust purification. In order to solve this problem and meet the increasingly stringent requirements for diesel engines at home and abroad, the technicians of Hebei Hanlan have studied and upgraded the purification equipment according to the flue gas characteristics of the diesel engine test bench, and launched a set of comprehensive performance Wanchun diesel engine test bench exhaust gas purification system.
The exhaust gas purification system of Wanchun diesel engine test bench is composed of DOC oxidation type exhaust gas purifier (hereinafter referred to as DOC), pretreatment device, FDF backflush regeneration exhaust gas purification device and SCR denitrification device. Comprehensive treatment of flue gas emissions is especially suitable for occasions with high requirements for exhaust emissions from test benches.
The main purpose of installing DOC is to reduce the emission of hydrocarbons (HC), carbon monoxide (CO) and part of particulate matter (PM). At the same time, for harmful components that are not restricted by current regulations (such as polycyclic aromatic hydrocarbons, acetaldehyde, etc.) ) Can also carry out effective purification. The DOC provided by Hebei Hanlan is a component structure, which is easy to install, not easy to block, can be used for a long time, takes up a small space, does not produce secondary pollution, etc., and has a good silencing function, so it can be widely used in diesel engine exhaust purification. .
In order to more effectively control the exhaust gas emitted by the diesel engine test bench, Hebei Hanlan specially designed a pretreatment device for the flue gas characteristics of the engine test bench. This device has good filtering effect, long service life, low back pressure, and regular cleaning. It can be used repeatedly and other advantages, and has been successfully applied to many bench projects at home and abroad.
In addition, this system adopts the FDF back-blowing regeneration tail gas purification equipment developed and designed by Hebei Hanlan in the black smoke purification treatment. The purification device automatically purges the soot particulate matter (PM) while regenerating the filter element, thus greatly Reduce the workload of the operator. The equipment has the advantages and characteristics of low cost, high reliability, continuous online regeneration, short regeneration time, and no secondary pollution.
After the black smoke and odor of the test bench are effectively purified, it is equipped with Wanchun SCR denitration system (selective catalytic reduction device) to convert nitrogen oxides NOX into harmless nitrogen (N2) through the action of a catalyst And water (H2O). The denitrification system has the characteristics of wide applicable temperature range, high-precision metering and injection of urea, reasonable installation location, small footprint, convenient maintenance and repair, high reliability and strong anti-interference ability. It can be designed according to user needs. In the scheme, the catalyst used is a coated denitrification catalyst for internal combustion engines independently developed and produced by Hebei Hanlan. The denitration efficiency can reach more than 95%, which provides a strong guarantee for smooth compliance.
The diesel engine test bench flue gas purification system that has been delivered to customers is a comprehensive exhaust gas treatment system, which solves the customer's diesel engine test bench exhaust purification problem in one stop, so that domestic and foreign users are on the road to environmental protection standards. Save money, worry and effort!
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