Waste acid treatment device for dry acetylene process

Abstract

The invention provides a dry acetylene process waste acid treatment device, and relates to the field of mechanical equipment. Comprising a pickling tower, an acid circulating pump, a waste acid pump, a degassing tower, a filler, a degassing tower acid inlet pipe, a gas phase outlet, a liquid phase outlet, a waste acid storage tank, a degassing fan, a waste gas combustion furnace, an air inlet, an air outlet, an acetylene burner, an acetylene gas source and a chimney. Harmful gas in the waste acid is removed in a degassing manner, so that the treatment of the waste acid meets the environmental protection requirement, and the surrounding environment is prevented from being polluted; the removed gas serves as combustion-supporting gas of a combustion furnace, a small amount of hydrogen sulfide, hydrogen phosphide and other harmful gas contained in the gas are combusted together in the combustion process, and tail gas obtained after combustion is harmlessly discharged through a chimney. The device and the method disclosed by the invention contribute to the environmental protection of the dry acetylene production process to a certain extent.

Description

technical field [0001] The invention relates to the technical field of waste acid treatment, in particular to a waste acid treatment device for a dry acetylene process. Background technique [0002] In the dry acetylene production process, the acetylene gas produced by the front-end process is cleaned to remove impurities and then sent to the subsequent process. Pickling is an essential part of the cleaning process. The medium used is concentrated sulfuric acid. Remove alkaline impurities and moisture in acetylene gas. [0003] Concentrated sulfuric acid needs to be replaced after a period of time to ensure the washing efficiency of the pickling tower. The replaced waste acid contains a small amount of hydrogen sulfide, phosphine, acetylene and other gases, which emit unpleasant, irritating and harmful odors to the human body. The environmental pollution is relatively large and the treatment is difficult, which is a difficult problem in the dry process acetylene industry. ...

AI Technical Summary

Problems solved by technology

[0003] Concentrated sulfuric acid needs to be replaced after a period of time to ensure the washing efficiency of the pickling tower. The replaced waste acid contains a small amount of hydrogen sulfide, phosphine, acetylene and other gases, which emit unpleasant, irritating and harmful odors to the human body. It pollutes the environment more and is difficult to deal with, which is a difficult problem in the dry process acetylene industry.

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