Common sense of prevention of air leakage and key parts wear during operation of cyclone dust collector
There are three types of air leakage in the cyclone dust collector: the inlet and outlet connection flanges, the dust collector body and the dust discharge device. The causes of air leakage are as follows: 1) The air leakage at the connection flange is mainly that the bolts are not tightened and the thickness of the gasket is uneven. , the flange surface is not flat, etc. 1. Anti-cyclone dust collector to prevent air leakage and key parts wear, avoid dust clogging, otherwise it will seriously affect the dust removal effect. Stable operating parameters Cyclone dust collector operating parameters mainly include: dust collector inlet Air flow rate, temperature of the process gas and inlet mass concentration of the dust-containing gas.
1) Inlet airflow speed. For a cyclone with a certain size, the inlet airflow speed is increased, not only the treatment gas volume can be increased, but also the separation efficiency can be effectively improved, but the pressure drop is also increased. When the inlet airflow velocity is increased to some After a value, the separation efficiency may decrease, the wear is intensified, and the service life of the precipitator is shortened, so the inlet airflow speed should be controlled within the range of 18~23m/s.
2) Inlet mass concentration of dust-containing gas. When the concentration is high, large particle dust has obvious carrying effect on small particle dust, which shows that the separation efficiency is improved.
3) The temperature of the treatment gas. Because the temperature of the gas increases, the viscosity becomes larger, and the centripetal force of the dust particles is increased, so the separation efficiency is lowered. Therefore, the dust collector operating under high temperature conditions should have a large inlet gas flow rate and Small cross-section flow rate. Service hotline
2. Preventing air leakage The cyclone dust collector will seriously affect the dust removal effect. It is estimated that the dust removal efficiency will decrease by 5% when the air leakage of the lower cone or the ash discharge valve of the dust collector is 1%; the dust removal efficiency will decrease by 30% when the air leakage is 5%. There are three types of air leakage in the cyclone dust collector: the inlet and outlet connection flanges, the dust collector body and the ash discharge device. The causes of air leakage are as follows:
1) The air leakage at the connecting flange is mainly caused by the bolt not being tightened, the thickness of the gasket being uneven, and the flange surface being uneven.
2) The main cause of air leakage from the dust collector body is wear, especially the lower cone. According to the experience, when the gas dust concentration exceeds 10g/m3, the 3mm steel plate can be worn out in less than 100 days. http: //news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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