Negative pressure water sealed air locking device

Abstract

The invention relates to a negative pressure water sealed air locking device, which belongs to the field of a spray tower sealing and circulating water recovery device. The device comprises a recovery pipeline, a negative pressure air locking cylinder and a discharging pipe, wherein the negative pressure air locking cylinder is a cylinder container without an end cover; the outlet end of the recovery pipeline is inserted into the negative pressure air locking cylinder and press close to the bottom part of the negative pressure air locking cylinder; the discharging pipe penetrates through the side wall of the upper part of the negative pressure air locking cylinder. The invention has the beneficial effects that according to the negative pressure water sealed air locking device, spraying media in a coke oven smoke spray tower can be completely recycled and stored, a discharge outlet in the bottom part of the spray tower always has enough water seal, the sealability of a coke oven smoke discharge system is ensured, and the occurrence of accidents of pressure loss is avoided.

Description

technical field [0001] The invention belongs to the field of spray tower airtight and circulating water recovery devices, and in particular relates to a negative-pressure water-sealed air-locking device. Background technique [0002] The washing and spraying tower used for environmental protection and dust removal of coke oven flue gas works under negative pressure. After the atomized spraying medium reacts chemically with the flue gas in the spraying tower, its droplets re-converge in the funnel-shaped bottom of the tower. in the discharge port. [0003] The spray scrubber used in the existing coking plant usually installs the recovery pipeline directly at the funnel-shaped discharge port at the bottom of the tower body and discharges the spray medium to the recovery device that is far away from the spray tower. However, this method needs to be cleaned in advance Considering the pipeline layout according to the position of other equipment, the cost is high, and the on-site...

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Problems solved by technology

[0005] In order to solve the problem that the existing spray medium recovery pipeline connected to the discharge port at the bottom of the coke oven flue gas spray tower needs to be connected to a distant recovery device, the pipeline is long and has many elbows, which not only has high cost and difficult construction , and it is easy to cause blockage of the spray medium. At the same time, the existing recovery pipeline is directly connected to the funnel-shaped discharge port at the bottom of the tower, which cannot reliably ensure the formation of the water seal, and it is easy to cause the spray tower to communicate directly with the outside atmosphere. To solve the technical problem of causing pressure loss accidents, the present invention provides a negative pressure water-sealed air lock device

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