Semi-water gas dedusting cooling method and device thereof

Abstract

The invention discloses a semi-water gas dedusting cooling method and a device thereof. When a gas wash tower is adopted to dedust and cool a semi-water gas, a separation plate is adopted in the gas wash tower to divide the gas wash tower into an upper segment and a lower segment, the separation plate is provided with a channel communicating the upper segment with the lower segment, a coarse-gridfilled tower is arranged in the upper segment, two independent water cycle systems are adopted to respectively wash the semi-water gas in the upper segment and the semi-water gas in the lower segment, the semi-water gas to be processed which enters the lower segment from the lower part of the gas wash tower is filtered by the coarse-grid filled tower and washed by the water cycle system in the lower segment, the filtered and washed semi-water gas which enters the lower segment through the channel on the separation plate is refiltered by a fine-grid filled tower in the upper segment and rewashed the water cycle system in the upper segment, and the refiltered and rewashed semi-water gas is conveyed to a next operation, so the dedusting cooling of the semi-water gas is completed. The device of the invention has the advantages of good dedusting cooling effect, difficult generation of the resistance to a production system, simple structure, convenient operation, low running cost and the like.

Description

technical field [0001] The patent of the invention relates to a method and device for dedusting and cooling semi-water gas, belonging to the technical field of synthetic ammonia gas production. Background technique [0002] At present, in the production of synthetic ammonia, a fixed bed is used to produce semi-water gas intermittently, and the traditional process of circulating water washing, dust removal and cooling is often used for dust removal and cooling of the produced semi-water gas. In this process, a single tower is generally used to directly spray water to cool down and remove dust. That is to say, when the semi-water gas enters the gas scrubber, water is used to spray the semi-water gas to cool down and remove dust. After the washed water is precipitated, it is sent to the cooling tower by hot water pump to cool down, and the cooled water is pumped to the scrubber again by cold water. recycle. Although this traditional dust removal and cooling process in the prio...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for dedusting and cooling semi-water gas with simple structure, convenient operation, effective dust removal and cooling, and not easy to generate system resistance, so as to solve the problem of semi-water gas cooling in the existing gas production system The problem of poor performance

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