A self-circulating hydrogen peroxide desulfurization process

A desulfurization process, hydrogen peroxide technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as inability to use desulfurization technology, and achieve highly targeted effects

Active Publication Date: 2019-05-24
双盾环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to regional restrictions, many companies cannot use this desulfurization technology due to the lack of hydrogen peroxide supply in the surrounding area or the restrictions on the transportation of hazardous chemicals.

Method used

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  • A self-circulating hydrogen peroxide desulfurization process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] When the desulfurization tower 5 adopts an empty tower structure, the self-circulating hydrogen peroxide desulfurization process flow of the present invention is as follows: first, the finished sulfuric acid from the sulfuric acid absorption tower 1 is mixed with the water from the water pipe and / or from the sulfuric acid with a concentration of 20% to 40%. The dilute sulfuric acid in the delivery pipe of the dilute sulfuric acid is configured in the electrolytic cell 2 to form a sulfuric acid solution with a concentration of 50% to 60%; the electrolytic cell 2 uses an inert electrode to electrolyze the sulfuric acid solution with a concentration of 50% to 60%. Peroxodisulfuric acid is generated under the environment; peroxodisulfuric acid is transported to the hydrolysis tank and hydrolyzed to generate a mixed solution of dilute sulfuric acid and hydrogen peroxide; the mixed solution is added to the desulfurization tower 5 through the mixed solution output pipe as 2 The...

Embodiment 2

[0030] When the desulfurization tower 5 adopts a packed tower structure, the self-circulating hydrogen peroxide desulfurization process flow of the present invention is as follows: first, the finished sulfuric acid from the sulfuric acid absorption tower 1 is mixed with the water from the water pipe and / or from the sulfuric acid with a concentration of 20% to 40%. The dilute sulfuric acid in the delivery pipe of the dilute sulfuric acid is configured in the electrolytic cell 2 to form a sulfuric acid solution with a concentration of 50% to 60%; the electrolytic cell 2 uses an inert electrode to electrolyze the sulfuric acid solution with a concentration of 50% to 60%. Peroxodisulfuric acid is generated under the environment; peroxodisulfuric acid is transported to the hydrolysis tank and hydrolyzed to generate a mixed solution of dilute sulfuric acid and hydrogen peroxide; the mixed solution is added to the desulfurization tower 5 through the mixed solution output pipe as 2 The...

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Abstract

The invention discloses a novel self-circulation hydrogen peroxide desulfurization process. The process includes the following steps that (a), finished sulfuric acid, water and / or dilute sulphuric acid are prepared into a sulfuric acid solution with the concentration of 50% to 60%; (b), a noble electrode is adopted for electrolyzing the sulfuric acid solution with the concentration of 50% to 60%,and peroxydisulfuric acid is generated; (c), peroxydisulfuric acid is hydrolyzed to generate a mixed solution of dilute sulphuric acid and hydrogen peroxide; (d), the mixed solution is added into a desulfurization tower to be subjected to desulfurization, and hydrogen peroxide in the mixed solution reacts with SO2 in smoke in a desulfurization tower to generate dilute sulphuric acid; (e), one partof generated dilute sulphuric acid with the concentration of 20% to 40% serves as an intermediate product to be fed into a sulfuric acid absorption tower for producing finished sulfuric acid, the other part of dilute sulphuric acid serves as a raw material to be mixed with finished sulfuric acid to generate a sulfuric solution with the concentration of 50% to 60%, and peroxydisulfuric acid is generated through electrolysis. The process is simple, the needed raw materials and intermediate products are all sulfuric acid, and the process is low in cost and high in adaptability.

Description

technical field [0001] The present invention relates to containing SO 2 The field of flue gas desulfurization technology, specifically a self-circulating hydrogen peroxide desulfurization process suitable for sulfuric acid enterprises or enterprises where hydrogen peroxide is inconvenient to transport. Background technique [0002] At present, hydrogen peroxide desulfurization is widely used in the field of sulfur dioxide flue gas treatment in sulfuric acid, smelting and other industries. It not only has high desulfurization efficiency, but also does not produce secondary pollution, which has obvious advantages. However, due to regional restrictions, many companies cannot use this desulfurization technology due to the lack of hydrogen peroxide supply in the surrounding area or the restrictions on the transportation of hazardous chemicals. Contents of the invention [0003] The object of the present invention is to solve the problems existing in the prior art, and provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50
CPCB01D53/50B01D53/78B01D2251/106B01D2258/0283
Inventor 宋小良曹伟
Owner 双盾环境科技有限公司
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