Closed-loop internal circulation device for gas collection in solid-liquid separation process

Abstract

Provided is a closed-loop internal circulation device for gas collection in the solid-liquid separation process. The closed-loop internal circulation device is composed of a compressed gas storage tank, a pressure regulating valve, a pressure transmitter, a check valve, a pressure exhaust drying valve, a reverse blowing valve, a clustered type reverse blowing filter, filter elements, a slagging valve, a slurry drying machine, a slag conveyor, a first-stage gas-liquid separator, a first-stage coalescence element, a gas scrubber, a spray assembly, a conveying pump, a second-stage gas-liquid separator, a second-stage coalescence element and an efficient gas filter. The slurry drying machine which operates in a sealed mode collects slagging filter cake and slagging gas, further drying treatment is conducted on the filter cake, and disorderly release of the gas and dust is avoided; gas-liquid coalescence separation is conducted on the gas through the gas-liquid separators, direct exhaust of atomized gas is avoided, effective coalescence collection of liquid mixed in the gas is achieved, and subsequent treatment burden is reduced; the gas is separated through inclined type corrugated plate screens or filler, spraying absorption is conducted on poisonous and harmful gas through the spray assembly, and damage caused by direct exhaust of the poisonous and harmful gas is avoided.

Description

technical field [0001] This design involves a closed-circuit internal circulation device for gas collection during the solid-liquid separation process, especially for the cluster type backflushing filter, a device and method for collecting and recycling a large amount of gas consumed in the entire solid-liquid separation process by using a closed circuit, Specifically, it is a closed-circuit internal circulation device process for gas collection in the solid-liquid separation process, which belongs to the field of filtration and separation. Background technique [0002] As a fully sealed filter system, the cluster backflush filter has reliable performance and is suitable for modern industrial production equipment. It is widely used in petroleum and petrochemical, natural gas, fine chemical, pharmaceutical, electronics, food and smelting industries. All the work of the cluster backflush filter is completed in a closed vertical container, avoiding the risk of pungent odor or t...

AI Technical Summary

Problems solved by technology

[0003] 1. Use compressed gas to discharge the residual liquid from the filter and dry the filter cake, especially in the drying stage, a large amount of gas will be consumed to take away the liquid in the filter cake, so that the discharged gas will be mixed with a large amount of atomized liquid Drops, direct discharge will lose part of the liquid and affect the normal operation of subsequent equipment;

[0004] 2. For the direct discharge of toxic and harmful liquid media in the filter cake after blowback and atomization, such as ammonia, hydrogen sulfide and other gases, it will cause environmental pollution and increase the difficulty of post-processing;

[0005] 3. For the open slag discharge method, the backflush slag discharge will instantly release a large amount of backflush gas, which will affect the working environment on site

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