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Demister Pad

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Description

I. Profile, working principle and characteristics of demister pad
Profile


Wire mesh demister (also known as mesh mist eliminator, mist, catching mist) is used for gas entrained mist separation column, in order to guarantee the efficiency of the filter, can increase productivity by 5%. The late fifties, the foreign used an apparatus which made of the special wrinkle woven mesh to remove inclusions of tiny liquid foam in the gas that such an apparatus in the study of the gas-liquid separation process and found that is very efficient, and the gas drop through the resistance of the device is very small, which is unmatched by other gas-liquid separation device, so quickly get a lot of promotion and a wide range of applications.

Wire demister standard was formulated by the Ministry of Chemical Industry in China on December 20, 1982, the basic implementation of the Shanghai municipal government standards Q/YSZZ-88-91 wire mesh industry was in 1991, began to fully implement HG/T21618-1998 national unity standard after the year 1998. The new standard demisters are divided into HG5-1404-81 riser type, HG5-1405-81 necking type and HG5-1406-81 full bore wire mesh device.

Demister pad is generally set at the top of the tower, setting it, not only can ensure the mass transfer efficiency of the tray, but also to reduce the board spacing. Demister standard applicable for chemical, petroleum, pharmaceutical, light industry, metallurgy and other industrial production in the vertical cylindrical equipment vapor-liquid separation device, is currently in the imports of ethylene, ammonia and chemical fiber production equipment used demister pad, has been applied in the desulfurization, remove oil mist, toxic and hazardous industrial gases and other fields.

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