SO2 removing device and method for production of reagent sulfuric acid

Abstract

The invention discloses a SO2 removing device and method for production of reagent sulfuric acid. The device comprises a reagent sulfuric acid desorption circulating pump, a circulating kettle and a SO2 desorption tower; the circulating kettle, the reagent sulfuric acid desorption circulating pump and the SO2 desorption tower are connected sequentially through acid-resistant pipelines to form a circulation loop; a pipeline opening is formed in the upper part of the circulating kettle and is used for adding the SO2-containing reagent sulfuric acid; a gas chamber outlet is formed at the top of the SO2 desorption tower; the gas chamber outlet is connected with a sulfuric acid production system negative pressure extraction pipe; and a gas inlet pipe is arranged at the bottom of the SO2 desorption tower and is used for sucking air. A packed tower of the chemical common gas and liquid exchange technology is used for desorbing, so that clean and harmless removal of the SO2 in the reagent sulfuric acid is realized, the whole removing process is energy-saving and environmentally-friendly, and efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of industrial production reagent sulfuric acid, in particular to a reagent sulfuric acid production and removal of SO 2 devices and methods. Background technique [0002] Reagent Sulfuric acid is a reagent often used in chemical industry production and testing, and has a wide range of uses. Reagent sulfuric acid has very strict requirements on impurities, but due to process reasons in production, gas absorption will inevitably bring SO 2 Harmful impurities, which must be removed. Remove SO 2 Such harmful impurities can be removed by air replacement. In the prior art, an air compressor is usually used to blow air and remove by bubbling in the container. [0003] There are mainly following problems in the prior art: [0004] (1) The air compressor consumes energy, which brings additional energy consumption and costs; [0005] (2) The air compressor is noisy, causing environmental pollution and personnel ...

AI Technical Summary

Problems solved by technology

[0004] (1) The air compressor consumes energy, which brings additional energy consumption and costs;

[0005] (2) The air compressor is noisy, causing environmental pollution and personnel discomfort;

[0006] (3) The air compressor needs to be purchased and maintained, which increases the cost of use;

[0007] (4) SO released by bubbling 2 and fine acid foam will pollute the air and the surrounding environment

If it is neutralized, there will be secondary pollution, cost and operational troubles;

[0008] (5) The production efficiency is not high, and the removal effect is not ideal

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