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Decoloring and purifying process for coke over gas desulfurized by-product coarse sulfur

A purification process, coke oven gas technology, applied in the field of decolorization and purification, can solve problems such as difficult to remove, dark color, affecting sales, etc.

Inactive Publication Date: 2008-11-26
JIGANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because coke oven gas contains tar, naphthalene and other impurities, it is difficult to remove it by ordinary methods. Sulfur contains many impurities, darker in color and poor in quality, which affects sales.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 100k crude sulfur from the desulfurization station of the recovery workshop of the coking plant g , with a sulfur content of 30-50%, crushed with a crusher, put into a dissolving tank, and add 200k of warm water at 70°C g , stirred for 1 hour under normal pressure, dissolved and removed the water-soluble inorganic impurities, stood for 3 hours, and separated by ordinary solid-liquid separation technology, sulfur entered the reactor, and then added CS 2 k g , at 0.5MP a , Dissolve sulfur at 120°C for 8 hours, filter out insoluble organic impurities; then cool the filtrate to 20°C for cooling and crystallization to obtain sulfur products with a purity of 95-99%.

- Embodiment 2

[0023] 100k crude sulfur from the desulfurization station of the recovery workshop of the coking plant g , with a sulfur content of 30-50%, crushed with a crusher, put into a dissolving tank, and add 400k of warm water at 80°C g , stirred for 2 hours under normal pressure, dissolved and removed the water-soluble inorganic impurities, stood for 5 hours, and separated by ordinary solid-liquid separation technology, sulfur entered the reactor, and then added C 2 HCl 3 40k g , at 0.6MP a , Dissolve sulfur at 135°C for 10 hours, filter out insoluble organic impurities; then cool the filtrate to 25°C to cool down and crystallize to obtain a sulfur product with a purity of 95-99%.

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PUM

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Abstract

The decoloring and purifying process for coarse sulfur as by product of desulfurizing coke oven gas features using water to eliminate inorganic salt impurity from coarse sulfur, dissolving sulfur in organic solvent to eliminate insoluble organic impurity and lowering temperature to crystallize filtrate to obtain high quality sulfur product.

Description

technical field [0001] The invention belongs to the field of coking product processing, in particular to a process for decolorizing and purifying sulfur removed from coke oven gas. Background technique [0002] A large amount of hydrogen sulfide gas is produced in petroleum processing and natural gas purification process. In the industry, the Klaus method is generally used to treat acid gas containing hydrogen sulfide. This method can only be used when H 2 S: SO 2 When the ratio is 2:1, the highest conversion rate can be obtained. [0003] At present, the coke oven gas wet desulfurization production process using ammonia as the alkali source and HPF as the catalyst is: the gas pretreated by electric tar capture enters the absorption tower from the bottom of the absorption tower after pre-cooling, and the top-down containing Ammonia desulfurizer countercurrent contact mass transfer. The desulfurization-rich liquid flows out from the bottom of the tower into the reaction ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/02
Inventor 朱玉廷康春清陈昌华祝仰勇赵文江林宪喜胡新亮
Owner JIGANG GRP