System for producing sulfuric acid from desulfurization waste liquid

By converting desulfurization wastewater into sulfuric acid, the problems of unrealizable byproduct salts and declining coke quality in desulfurization wastewater treatment have been solved, achieving resource utilization and improved economic benefits.

CN224371099UActive Publication Date: 2026-06-19YANGZHOU JINYUAN CHEM EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGZHOU JINYUAN CHEM EQUIP
Filing Date
2025-05-29
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing desulfurization wastewater treatment methods either affect the quality grade of coke or make it difficult to convert by-product salts into economic value, leading to market saturation and sales difficulties.

Method used

Through processes such as incineration gas production, flue gas purification, flue gas conversion, drying, and absorption, the sulfur-containing byproducts in the desulfurization waste liquid are converted into SO2 flue gas, which is further converted into SO3 and absorbed into sulfuric acid, thus realizing resource utilization.

Benefits of technology

This solved the problem of the difficulty in realizing the economic value of by-product salt, improved the quality grade of coke, and realized the resource-based treatment of desulfurization waste liquid, thereby improving energy utilization efficiency and economic benefits.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of coal coking "three wastes" treatment technology relates to a kind of sulphuric acid system made of desulfurization waste liquid.The utility model includes: incineration gas production procedure, including the intercommunication incinerator and air heat exchanger;Flue gas purification procedure, including the high efficiency scrubber, filler washing tower and electric demister sequentially communicated;Flue gas conversion procedure, including conversion tower, and conversion tower is equipped with at least four catalytic conversion layers;Drying and absorption procedure, including drying tower and absorption tower;Tail suction procedure, including tail gas absorption tower;Conversion tower each catalytic conversion layer is also equipped with corresponding heat exchanger;Drying tower and the flue gas flow passage of heat exchanger are communicated, and flue gas enters conversion tower from the flue gas flow passage of heat exchanger and becomes conversion gas, and conversion gas enters the conversion gas flow passage of heat exchanger again and is communicated with absorption tower, and absorption tower absorbs conversion gas and prepares sulphuric acid.The utility model is used to solve the technical problem that existing desulfurization waste liquid treatment will affect coke quality grade or vice salt is difficult to convert economic value.
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