Device for preparing clean liquid for clean acetylene gas in chlor-alkali system and method thereof

Abstract

The invention discloses a device for preparing a clean liquid for clean acetylene gas in a chlor-alkali system and a method thereof. The device comprises a concentrated sodium hypochlorite storage tank, a concentrated sodium hypochlorite buffer tank, a diluted sodium hypochlorite storage tank, a diluted sodium hypochlorite head tank and a Venturi connected sequentially through a pipeline. The invention belongs to a technical improving process of recycling acetylene from concentrated sodium hypochlorite. Compared with the prior art, the method disclosed by the invention has the advantages that 1, concentrated sodium hypochlorite liquor is used to prepare a sodium hypochlorite solution, so that the byproduct is better used; 2, the use levels of liquid caustic soda and chlorine are reduced during production of an acetylene gas clearing agent, so that the expense generated is lowered; and 3, the selling pressure of the concentrated sodium hypochlorite is reduced.

Description

technical field [0001] The invention belongs to the technological transformation process of reusing acetylene by concentrated sodium hypochlorite, and in particular relates to equipment and a method for preparing cleaning liquid for cleaning acetylene gas in a chlor-alkali system. Background technique [0002] At present, calcium carbide acetylene process PVC manufacturers mostly use sodium hypochlorite solution with an available chlorine content of 0.085% to 0.12% and a pH of 7 to 8 as a detergent for acetylene gas. Sodium hypochlorite acetylene gas cleaner is made up of 5% dilute lye, chlorine gas and water through Venturi, so the cost of liquid alkali and chlorine gas is relatively large. At present, the market for concentrated sodium hypochlorite solution produced by the caustic soda system of chlor-alkali chemical industry is weak, and the sales pressure and environmental protection pressure are relatively high. If it is possible to provide a process for alleviating th...

AI Technical Summary

Problems solved by technology

Sodium hypochlorite acetylene gas cleaner is prepared from 5% dilute lye, chlorine gas and water through Venturi, so the cost of liquid alkali and chlorine gas is relatively high

At present, the market of concentrated sodium hypochlorite solution produced by the caustic soda system of chlor-alkali chemical industry is weak, and the sales pressure and environmental protection pressure are relatively high.

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