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What is the function of tail gas purification equipment
source:www.bahbkj.comRelease time:2016年04月13日
In order to control automobile exhaust pollution and reduce the emission of toxic gases such as carbon monoxide and black smoke, the exhaust gas purification equipment has been using ceramic catalytic converters to treat automobile exhaust since the late 1970s. The main hazardous substances are HC, Co, NOx and particulate matter (black smoke). The overall structure of the tail gas purification equipment is a metal honeycomb carrier coated with precious metal catalyst. Its working principle is that when high-temperature exhaust gas passes through the purifier, HC, CO and particles react with oxygen under the action of catalyst and high temperature to form non-toxic water and carbon dioxide



Internal combustion engines use gasoline, diesel, LPG or CNG as fuel. The main hazardous substances are HC, Co, NOx and particulate matter (black smoke). The overall structure of the tail gas purification equipment is a metal honeycomb carrier coated with precious metal catalyst. Its working principle is that when high-temperature exhaust gas passes through the purifier, HC, CO and particles react with oxygen under the action of catalyst and high temperature to form non-toxic water and carbon dioxide



Gasoline, LPG and CNG engines use tail gas purification equipment to remove HC, CO and NOx. Diesel engine adopts oxidation catalyst 40; Document 41 straight through maintenance free diesel exhaust particulate filter &40; FTF) Wall flow diesel exhaust particulate filter &40; DPF) to remove HC, CO and particulate matter. The SCR system is also used to remove NOx. Straight through maintenance free diesel exhaust particulate filter (ftf&41; it can remove 60-80% of black smoke, 95% of diesel exhaust odor and 99% of CO



At present, urea aqueous solution and ammonia water are commonly used as reducing agents to reduce nitrogen oxides to nitrogen through catalysts
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