Baghouse cupola cupola cupola, also known in the smelting process, due to the combustion of coke, charge preheating, melting and heat, gas furnace feeding and other mechanical action sports and a variety of chemical reactions, thermal effects, etc. will produce large amounts of harmful gases and solid hazardous substances, these harmful substances on humans and the natural environment has a great deal of harm, must be treated. Cupola dust is a company based Cupola flue gas temperature, air flow, air flow and unstable characteristics designed a dust removal system. Cupola flue gas temperature varies, depending on the height of the coke rate, unit blast volume and melting zone above the trough, the furnace temperature is generally between 200 ℃ to 600 ℃, when the furnace combustion gas again, the temperature can be reaches 400 ℃ to 800 ℃, can reach 1200 ℃. And its fluctuation range is large, especially when playing furnace and knot shed, flue gas temperature rises rapidly, rising by the usual 200 ℃ -600 ℃ to 800 ℃ -1000 ℃, it is necessary to set up a cooling device before entering the precipitator . Also in the front entrance of dust, spark trapping device must be installed to avoid cupola furnace flue gases contain sparks and burning bag, gas cooling is usually in the following ways: ① mixed air cooling (equipment is relatively simple, investment Just in front of a small set of atmospheric dust suction inlet, allowing air mixture at room temperature to high temperature gas generated in the production process in order to achieve cooling purposes, but this way will increase the load of dust removal system, dust collector must be increased to meet production needs), ② direct water cooling (in high temperature gas pipeline direct spray, cleaning dust removal system in this way will cause difficulties, and piping susceptible to corrosion, while also produce sludge secondary pollution), ③ indirect water cooling ( Sandwich made of metal cooled, high temperature gas through the pipeline when the heat came through the wall, by the cooling water flowing sandwich away, this way investment is large, the effect is obvious), ④ natural air cooling (structure Simple, one input is low, the use of outside air directly to the hot gas pipe cooling), ⑤ motor cooled (natural air cooling device in the next installation of axial fans, but also the use of outside air directly to the piping hot gas cooling) . So far, the vast majority of the country is still unorganized cupola exhaust emissions, not only causes environmental pollution, and a lot of hot air will be discharged, but also wasted a lot of valuable resources at the call of the national energy conservation policy, our company technical staff combined with the actual production situation of domestic cupola, cupola dust removal system for the design of the following programs, 3 (smoke) dust control technology in general processes (smoke) dust control technology general process is as follows: cupola powder (smoke) dust - - dust extraction hood flue - Total cigarette tubes - settling chamber - Tornado cooled cooling device - spark trap - cold valve - baghouse - draft fan - I designed chimney cupola After a number of special filter manufacturers cupola application proved that the technology is mature, low operating costs and the total project cost.