Dust-containing coal tar negative-pressure gasifying filtering device and using method thereof

Abstract

The invention discloses a dust-containing coal tar negative-pressure gasifying filtering device and a using method thereof. A partition is longitudinally and fixedly arranged in a separator barrel body for dividing the separator barrel body into a filter cavity and a backwashing cavity; the bottom end of the partition is suspended to form a material input cavity with a lower end enclosure; a rotary shaft is inserted along the axis of the partition; the upper end of the rotary shaft penetrates through an upper end enclosure and is connected with a rotary motor on the outer part of the separator barrel body; a filter disc which is perpendicular to the rotary shaft is fixedly arranged on the rotary shaft; the outer edge of the filter disc clings to the inner side wall of the filter cavity and the inner side wall of the backwashing cavity; a spray liquid input hole, a backwashing liquid output hole, a gas supply hole and a gas extraction hole are formed in the side wall of the backwashing cavity; a spray pipe and a liquid receiving plate which is arranged in an inclined manner are arranged in the backwashing cavity; the spray pipe is positioned above the filter disc and communicates with the spray liquid input hole; and a material input hole is formed in the side wall of the material input cavity. The dust-containing coal tar negative-pressure gasifying filtering device is simple to operate, is low in requirement on dust content of fed coal tar, can perform rotary filtration and backwashing under a negative-pressure condition, and improves the coal tar yield.

Description

technical field [0001] The invention relates to a coal tar purification and dust removal device and a use method thereof, in particular to a dusty coal tar negative pressure gasification filter device and a use method thereof. Background technique [0002] In recent years, my country's energy and chemical products have been in a stage of rapid growth, and coal chemical industry has occupied an important position in the energy field. As one of the coal chemical products, coal tar has a wide range of sources and low price, and it is an important chemical raw material. However, due to the large amount of dust impurities in coal tar, its processing performance is severely limited. [0003] The traditional coal tar and dust separation equipment is a mechanized ammonia water separation tank or separation tank. The mechanized ammonia water separation tank or separation tank is free to stratify due to the different densities of dust, coal tar and water. The equipment is large in siz...

AI Technical Summary

Problems solved by technology

However, the gasified coal tar oil gas will entrain dust, and the dust will accumulate in the tower internals during the process of rising with the oil gas, which is easy to block the tower internals

If the dust content of coal tar is too high, the sediment left at the bottom of the tower after decompression gasification will have poor fluidity and easily block the outlet

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