Design of dust purification for blast furnace
Blast furnace is an important equipment in industrial production. It is widely used in metallurgy, chemical industry and other industries. It is generally composed of furnace body, top, bottom, hot wind system, material system, flue, air supply system and dust removal system. The dust removal system is the most important part of the blast furnace.
Dust generated by the blast furnace mainly comes from the raw materials of the blast furnace and the hot wind generated by the hot air system. Dust in blast furnace has two forms of particles and gas, and the particles are mainly metal oxides and carbon compounds. Dust not only causes great harm to occupational safety and urban environment, but also reduces the efficiency of blast furnace production. Therefore, it is necessary to build a dust removal system for the blast furnace to ensure the normal operation of the blast furnace and protect the environment.
The design of dust purification for blast furnace mainly starts from the source of dust and the type of dust, and then selects the corresponding dust removal equipment according to the type of dust. Generally speaking, the dust removal equipment of blast furnace includes cyclone dust collector, bag filter, electrostatic precipitator, etc.
Cyclone dust collector is mainly used in blast furnace dust removal, because the dust particles discharged by the blast furnace have large particle size, low density and large air volume. The structure of cyclone dust collector is simple and the comprehensive dust removal efficiency is high. It is mainly used to realize coarse dust removal of blast furnace.
The bag filter is composed of filter material bags. The filter material bags can filter the dust particles in the blast furnace dust. The dust removal efficiency of the dust collector is high and the pressure loss is low. It can also realize fine dust removal.
The electrostatic dust collector is used to separate charged dust particles by electric field. The main feature is that it can remove fine particles with small particle size and high concentration efficiently. The comprehensive dust removal efficiency of the dust collector is higher than that of other types of dust collectors.
Based on the source of dust and the type of dust in the blast furnace, Bag filter and electrostatic filter are mostly used in the project. According to the actual situation, the blast furnace dust collector of the specific project is determined.
In summary, the design of the dust removal system for the blast furnace is mainly based on the type, concentration and size of the dust. First of all, it is necessary to analyze the source and composition of the dust, and then select the dust removal equipment according to the size, concentration and type of the dust. When selecting the equipment, it is necessary to consider the characteristics of the dust and the working parameters of the dust removal equipment, in order to make the process smooth and efficient, and eventually achieve the purpose of dust removal.
