High-pressure solid-liquid separator

Abstract

The invention provides a high-pressure solid-liquid separator. The high-pressure solid-liquid separator comprises: a shell, which defines an enclosed cavity; an upper supporting plate and a lower supporting plate, which are arranged in the cavity and divide the chamber into an overflow liquid chamber, a hydrocyclone separation chamber and a thick slurry chamber from top to bottom; and a plurality of hydrocyclones, which are arranged in the hydrocyclone separation chamber and respectively communicate with the overflow liquid chamber and the thick slurry chamber, wherein high-pressure feed liquid is subjected to solid-liquid separation in the hydrocyclones under the action of centrifugal force, separated clear liquid enters the overflow liquid chamber, and thick slurry enters the thick slurry chamber; According to the high-pressure solid-liquid separator disclosed by an embodiment of the invention, efficient solid-liquid separation of superfine powder and liquid can be realized at high temperature and high pressure.

Description

technical field [0001] The invention belongs to the field of high-temperature and high-pressure solid-liquid separation, in particular to a high-pressure solid-liquid separator. Background technique [0002] In many fields such as coal chemical industry, water treatment and petrochemical industry, it involves the solid-liquid process of high-temperature or high-pressure ultra-fine powder and liquid such as water or oil. In coal chemical industry, especially high-pressure pulverized coal gasification is a clean coal utilization technology, which has been developed rapidly in recent years and has been widely used. It is an indispensable technical link in the whole process of high temperature ash water separation in the field of pulverized coal gasification. The current technology adopted is to gradually reduce the temperature and pressure of the high-temperature gray water and separate it by sedimentation and vacuum filtration. However, this process has disadvantages such as...

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Problems solved by technology

[0003] In the prior art, the problem of uneven force and unbalanced flow field caused by the feeding of the hydrocyclone is usually changed by adopting multiple air inlets, but this type of hydrocyclone is only suitable for gas-liquid separation or larger particle size solid-liquid separation device

However, the separation efficiency of particles with a particle size below 10 μm is very poor. If this type of material is to be separated, the size of the separator must be reduced, resulting in difficulties in the processing of the gas inlet and the inner wall.

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