一种化工废水中合成大苏打的生产系统

By using a sulfur-burning furnace to generate sulfur dioxide and reacting it with the wastewater in a production system that synthesizes sodium thiosulfate in chemical wastewater, and combining it with equipment such as a sulfur melting kettle and an evaporator, the problem of wastewater resource waste during the production of chemical intermediates has been solved, and sodium thiosulfate preparation and cost reduction have been achieved.

CN224513345UActive Publication Date: 2026-07-17JINTA HAITUO CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINTA HAITUO CHEM CO LTD
Filing Date
2025-08-01
Publication Date
2026-07-17

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Abstract

本实用新型涉及化工废水处理技术领域，具体是一种化工废水中合成大苏打的生产系统，所述废水罐输出端通过管道与所述第一燃硫吸收塔进液端连接，所述燃硫炉输出端通过管道与所述第一燃硫吸收塔进气端连接，所述第一燃硫吸收塔输出端通过管道与熔硫釜输入端连接，所述熔硫釜出液端通过管道与二效蒸发器连接，所述二效蒸发器输出端通过管道与压滤机输入端连接，所述压滤机输出端通过管道与结晶釜输入端连接，所述结晶釜输出端通过管道与离心机输入端连接。本实用新型能够将化工中间体还原反应后的废水进行有效处理，生成副产品大苏打，避免资源浪费，同时能够降低废水处理成本。
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Claims

1. A production system for synthetic sodium carbonate in chemical wastewater, comprising a wastewater tank (1), a first sulfur-burning absorption tower (2), and a sulfur-burning furnace (4), characterized in that: The wastewater tank (1) has its input end connected to the wastewater main pipe and its output end connected to the liquid inlet of the first sulfur absorption tower (2) via a pipe. The output end of the sulfur furnace (4) is connected to the gas inlet of the first sulfur absorption tower (2) via a pipe. The output end of the first sulfur absorption tower (2) is connected to the input end of the sulfur melting kettle (5) via a pipe. The liquid outlet of the sulfur melting kettle (5) is connected to the double-effect evaporator (6) via a pipe. The output end of the double-effect evaporator (6) is connected to the input end of the filter press (8) via a pipe. The output end of the filter press (8) is connected to the input end of the crystallization kettle (9) via a pipe. The output end of the crystallization kettle (9) is connected to the input end of the centrifuge (10) via a pipe.

2. The chemical wastewater system for producing synthetic sodium carbonate according to claim 1, characterized in that: The output end of the first sulfur absorption tower (2) is connected to the liquid inlet of the second sulfur absorption tower (3) through a pipeline. The output end of the sulfur furnace (4) is connected to the gas inlet of the second sulfur absorption tower (3) through a pipeline. The output end of the second sulfur absorption tower (3) is connected to the input end of the sulfur melting kettle (5) through a pipeline.

3. The system for production of synthetic sodium carbonate from chemical waste water as claimed in claim 1 wherein: The output end of the double-effect evaporator (6) is connected to the liquid inlet of the decolorizing reactor (7) through a pipe, and the output end of the decolorizing reactor (7) is connected to the input end of the filter press (8) through a pipe.

4. The system for production of synthetic sodium carbonate from chemical waste water as claimed in claim 1 wherein: The outlet of the sulfur melting kettle (5) is connected to the input of the condenser (11) via a pipe, and the output of the condenser (11) is connected to the feed end of the recovery tank (12) via a pipe.