Closed-circuit internal circulation technology for gas collection in solid-liquid separation process

Abstract

The invention relates to a technology of a closed-circuit internal circulation device for gas collection in a solid-liquid separation process. The closed-circuit internal circulation device consists of a compressed gas storing tank, a pressure adjusting valve, a pressure transmitter, a check valve, a pressure exhaust drying valve, a reverse blowing valve, a bundling type reverse blowing filter, filtering elements, a slag discharging valve, a slurry drying machine, a slag conveyor, a first-stage gas-liquid separator, a first-stage aggregation element, a gas washer, a spraying assembly, a conveying pump, a second-stage gas-liquid separator, a second-stage aggregation element, and a high-efficiency gas filter. The slurry drying machine in closed operation is used for collecting slag discharging filer cakes and slag discharging gas, and drying treatment is further performed on the filter cakes, so that disordered release of gas and dust is avoided; the gas-liquid separator is used for performing gas-liquid aggregation and separation on the gas, so that the direct discharge of atomized gas is avoided, the effective aggregation and collection of liquid mingled in the gas can be realized, and the subsequent treatment burden is reduced; and an inclined corrugated plate silk screen or a filling is used for separating the gas, and the spraying component is used for spraying and absorbing toxic and harmful gas, so that the danger of directly discharging the toxic and harmful gas is avoided.

Description

technical field [0001] This design relates to the closed-circuit internal circulation device and method for gas collection in the solid-liquid separation process, especially for the cluster-type backflush filter, which uses a closed circuit to collect and recycle a large amount of gas consumed in the entire solid-liquid separation process. The method, specifically, is a closed-circuit internal circulation device process for gas collection in a solid-liquid separation process, and 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 devices. It is widely used in petroleum and petrochemical, natural gas, fine chemical, pharmaceutical, electronics, food and smelting industries; cluster backflush All the work of the filter is completed in a closed vertical container, avoiding the risk of pungent odor or toxic gas and ...

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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