A kind of liquid sulfur fixing agent and preparation method thereof

A sulfur-fixing agent and liquid technology, which is applied in the field of liquid sulfur-fixing agent and its preparation, can solve the problems of reducing coal combustion performance, complex process, corrosion and wear, etc., to ensure desulfurization effect, reduce pollution emissions, and high desulfurization efficiency Effect

Active Publication Date: 2021-02-02
辽宁天宝华瑞建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sulfur-fixing agents used in briquette products on the market generally have poor high-temperature sulfur-fixing effects and reduce the combustion performance of briquettes, resulting in a certain waste of resources.
The wet desulfurization process mainly includes wet limestone / gypsum desulfurization technology. The advantages of this process are mature technology, high desulfurization efficiency of more than 90%, low cost of absorbent, and waste residue can be recycled as gypsum. The disadvantage is that the equipment is prone to fouling , blockage, corrosion and wear, it is difficult to run stably for a long period of time, and the by-products are almost useless; the double-alkali flue gas desulfurization method has high desulfurization efficiency, simple system, and low investment; the system is not easy to scale and block, but the process is complicated and the maturity It is not high, and the by-product sodium sulfate is difficult to regenerate; for ammonia flue gas desulfurization, the advantages of this process are high desulfurization efficiency, which can maintain a desulfurization efficiency of 95% to 99%, low energy consumption, fast reaction rate, and high utilization rate of absorbent. The disadvantage is the high cost of the absorbent; therefore, it is difficult to find a sulfur-fixing agent that not only has good sulfur-fixing effect, high efficiency, low corrosion and stability in the desulfurization process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A liquid sulfur-fixing agent. The raw materials include, by weight, 20 parts of organic calcium salts, 12 parts of metal salts, 10 parts of surfactants, 15 parts of polyols, and 100 parts of water;

[0046] The organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide , the weight ratio of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide is 6:2.5:1, and the CAS number of sodium dodecylbenzenesulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from Xingtai Xinlanxing Technology Co., Ltd., OP-4TX-4, and the CAS number of the coconut acid diethanolamide is 52950-18-2; the The metal salts are a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride and ferric chloride is 1:3.5; the polyhydric alcohol is a com...

Embodiment 2

[0049] A liquid sulfur-fixing agent. The raw materials include, by weight, 5 parts of organic calcium salt, 1 part of metal salt, 1 part of surfactant, 1 part of polyhydric alcohol, and 50 parts of water;

[0050] The organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide , the weight ratio of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide is 4:1:1, and the CAS number of sodium dodecylbenzenesulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from Xingtai Xinlanxing Technology Co., Ltd., OP-4TX-4, and the CAS number of the coconut acid diethanolamide is 52950-18-2; the The metal salts are a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride and ferric chloride is 1:1; the polyhydric alcohol is a combina...

Embodiment 3

[0053] A liquid sulfur-fixing agent. The raw materials include, by weight, 35 parts of organic calcium salts, 24 parts of metal salts, 15 parts of surfactants, 30 parts of polyols, and 100 parts of water;

[0054] The organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide , the weight ratio of sodium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether, and coconut acid diethanolamide is 8:4:1, and the CAS number of sodium dodecylbenzenesulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from Xingtai Xinlanxing Technology Co., Ltd., OP-4TX-4, and the CAS number of the coconut acid diethanolamide is 52950-18-2; the The metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride and ferric chloride is 1:6; the polyhydric alcohol is a combinati...

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PUM

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Abstract

The invention relates to the technical field of energy and chemical materials, and provides a liquid sulfur-fixing agent. In parts by weight, the raw materials at least include 5-35 parts of organic calcium salts, 1-25 parts of metal salts, and 1-15 parts of surfactants. , 1-30 parts of polyhydric alcohol, 100 parts of water; also provides a preparation method of liquid sulfur-fixing agent.

Description

technical field [0001] The invention relates to the technical field of energy and chemical materials, and more particularly to a liquid sulfur-fixing agent and a preparation method thereof. Background technique [0002] The extensive use of coal has brought a series of environmental pollution problems, with SO 2 and NO x The pollution is the most serious, which has toxic and side effects on the environment, human body, etc., and causes certain losses to the economy of our country. In the new era of increasingly stringent environmental protection requirements and increasingly perfect energy optimization, the standards for the treatment of coal-fired flue gas pollutants are more stringent. At present, the sulfur-fixing agents used in briquette products in the market generally have the problems of poor high-temperature sulfur-fixing effect and reduced combustion performance of briquettes, resulting in a certain waste of resources. The wet desulfurization process mainly inclu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
CPCC10L9/10
Inventor 刘军华孙玉杰杨阳刘永胜周莉人徐哲王鹏
Owner 辽宁天宝华瑞建材有限公司
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