Cupola smoke is a mixture of smoke and dust particles. 0 。 Smoke is the product of incomplete combustion of fuel components and is caused by a particle size of 0 . 的极细炭粒形成的固态凝聚性气溶胶，而尘则是炉料中的 Si02 、金属氧化物、焦炭及石灰石粉末等，在鼓风工况下随气流扬起并悬浮于炉气中的固态颗粒。 001-0. Lpm is a solid agglomerated aerosol formed by extremely fine carbon particles, and the dust is Si02 , metal oxides, coke and limestone powder in the charge, which rises and suspends in the airflow under the blast condition. Solid particles in the furnace gas. Smoke is a special form of dust, but dust is not smoke. This kind of physical difference results in a qualitative difference in the way of smoke removal and dust removal. . 将烟消除在燃烧过程中。 The fundamental way to eliminate smoke is to provide combustion conditions for fuel . Eliminate smoke in the combustion process. The cupola bag filter method is only effective for suspended solid dust particles.
Therefore, the main contradiction of the soot dust control is dust removal. Grasp this major contradiction, and take into account the physical and chemical characteristics of the cupola flue gas, including gas composition, dust production, initial dust concentration of the furnace gas, weight dispersion of dust particles with different particle sizes, flue gas volume Its temperature and other factors.
Comparison of the types and performance of cupola flue gas bag dust removal systems. Cupola flue gas dust removal systems are divided into two categories, wet and in-process, according to whether the flue gas directly interacts with water during operation. Wet systems need to address secondary pollution and problems. CO , SO: 不_标。 As mentioned above, the main contradiction of cupola flue gas treatment is dust removal, usually CO, SO: not standard. HF ，一般则应采用干法。 Therefore, only when it is necessary to use fluorite as a flux, a dry-wet combined dust removal system is used in order to remove both dust and harmful gases HF . Generally, a dry method should be used.
. 粉尘排放浓度能否达标取决于烟气起始含尘浓度，亦即取决于炉料的洁净度。 After using this device, whether the dust emission concentration can reach the standard depends on the initial dust concentration of the flue gas, that is, the cleanliness of the charge.
Selection of bag dust removal system scheme
冲天炉 2. 水冷套管 3. 多管水冷旋风除尘器 4. 热管换热器 5. 机械回转反吹扁布袋除尘器 6. 引风机 7. 阻抗复合消声器 8. 烟囱 9. 手动阀 10 电磁阀 11 循环水池 12 水泵 1 cupola 2. water-cooled jacket 3. multi-tube water-cooled cyclone dust collector 4. heat pipe heat exchanger 5. mechanical rotary back blowing flat bag dust collector 6. induced draft fan 7. impedance composite muffler 8. chimney 9. manual valve 10 Valve 11 circulating pool 12 water pump
. 使环保的社会效益与节能的经济效益得到统一，有利于环保工作的开展。 This cupola bag dust collector can recover the waste heat of the flue gas and make use of it . It unifies the social benefits of environmental protection and the economic benefits of energy conservation, and is conducive to the development of environmental protection work.