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A treatment process for low-quality sulfur in coal chemical industry

A treatment process and low-quality technology, applied in the direction of sulfur preparation/purification, etc., can solve the problems of unsafe product purity, high energy consumption of treatment technology, large pollution, etc., to improve dynamic stability and water damage resistance, improve The effect of road engineering quality and low cost

Active Publication Date: 2021-05-04
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of high energy consumption, heavy pollution, unsafety and poor product purity of existing low-quality sulfur recovery treatment technology, and provides a treatment process for low-quality sulfur in coal chemical industry

Method used

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  • A treatment process for low-quality sulfur in coal chemical industry
  • A treatment process for low-quality sulfur in coal chemical industry
  • A treatment process for low-quality sulfur in coal chemical industry

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Step 1: Add 1kg of low-quality sulfur to the reactor, add 12g of 95% concentrated sulfuric acid at the same time, adjust the temperature of the reactor to 130°C, and react for 2 hours. Stirring is required during the reaction, and the rotation speed is 40 rpm. The reaction is completed Afterwards, it flows by itself in liquid form or is pumped into the separator, and the gas at the top is treated by a purification device and then emptied.

[0023] Step 2: Keep the temperature of the separation tank at 135°C and separate for 2 hours. The separated upper liquid is cooled by the condenser and then returned to the desulfurization system, and the lower liquid enters the mixer in liquid form.

[0024] Step 3: Keep the temperature in the mixer at 120°C~150°C, add 20g of low-temperature extension agent, 40g of poison inhibitor, 50g of anti-peeling agent, and 20g of plasticizer into the mixer. The mixing process needs to be supplemented by stirring. The stirring speed is 100 rpm...

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Abstract

A treatment process for low-quality sulfur in coal chemical industry, which belongs to the field of coal chemical product treatment technology, can solve the problems of high energy consumption, large pollution, unsafety and poor product purity in existing low-quality recovery sulfur treatment technology, and adopts wet oxidation Removal of H 2 The low-quality recycled sulfur produced in the S process is used as a raw material, and a sulfur-based cement particle is prepared after being processed through reaction, separation, mixing and granulation processes. The cementing material is low in cost and can not only replace part of the asphalt in the paving process, but also effectively improve the dynamic stability and water damage resistance of the asphalt mixture. It is an effective way to realize the high-quality utilization of low-quality sulfur. It is of great practical significance to improve the economic benefits of enterprises, reduce the cost of paving and improve the quality of road engineering.

Description

technical field [0001] The invention belongs to the technical field of coal chemical product treatment, and in particular relates to a process for treating low-quality sulfur in coal chemical industry. Background technique [0002] In coking, chemical fertilizer and other coal chemical industries, wet oxidation technology is used to remove H 2 A large amount of low-quality recovered sulfur will be produced in the S process, which contains not only sulfur, but also desulfurization by-products such as thiocyanate and thiosulfate, tar substances, and impurities such as desulfurization catalysts, which is a very harmful pollution. things. At present, there is no cost-effective method for treating low-quality recovered sulfur. Therefore, how to economically and effectively deal with low-quality recovered sulfur has become a technical problem faced by all coking, chemical fertilizer and other enterprises, which has seriously restricted the sustainable and environmentally friendl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/02
CPCC04B40/0039C04B18/0427C04B22/02C04B2103/0068
Inventor 李国强李涛李超赵永乐王影李源刘俊张永发
Owner TAIYUAN UNIV OF TECH
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