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Flue gas sulfur-fixing agent used in sodium sulfide synthesis process and preparation process of flue gas sulfur-fixing agent

A sodium sulfide and sulfur-fixing agent technology, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve problems such as increasing environmental protection treatment pressure, shortening service life, and atmospheric environmental pollution, so as to prolong residence time and reduce Small discharge, the effect of increasing the heat transfer rate

Active Publication Date: 2021-05-04
铜陵铜冠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has a certain desulfurization effect, its desulfurization efficiency is still relatively low
The discharged sulfur-containing oxides will not only corrode the equipment and shorten its service life, but also pollute the atmospheric environment and increase the pressure of environmental protection treatment

Method used

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  • Flue gas sulfur-fixing agent used in sodium sulfide synthesis process and preparation process of flue gas sulfur-fixing agent
  • Flue gas sulfur-fixing agent used in sodium sulfide synthesis process and preparation process of flue gas sulfur-fixing agent
  • Flue gas sulfur-fixing agent used in sodium sulfide synthesis process and preparation process of flue gas sulfur-fixing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A flue gas sulfur-fixing agent used in the sodium sulfide synthesis process, consisting of the following raw materials in parts by weight: 80 parts of modified calcium carbonate powder, 10 parts of vermiculite powder, 3.6 parts of sodium carbonate, 7 parts of graphene, and 3 parts of potassium nitrate , 3.5 parts of cerium stearate, 8 parts of liquid paraffin, 4 parts of potassium permanganate, 3 parts of sodium lauryl sulfate, 12 parts of gypsum, 6 parts of silicon dioxide, 2.2 parts of copper powder and an appropriate amount of deionized water.

[0032] The preparation method of modified calcium carbonate micropowder comprises the following steps:

[0033] One, the preparation of porous calcium carbonate powder:

[0034] Under the condition of mechanical stirring, add 20% dioctyl sodium sulfosuccinate with a mass of 20% to the calcium chloride aqueous solution with a concentration of 0.35 mol / L; Its pH is adjusted to 8.0; Continue to mechanically stir the mixed compo...

Embodiment 2

[0045] The preparation technology of sulfur-fixing agent is basically the same as embodiment 1, the difference is:

[0046] A flue gas sulfur-fixing agent used in the sodium sulfide synthesis process, consisting of the following raw materials in parts by weight: 85 parts of modified calcium carbonate powder, 12 parts of vermiculite powder, 4.0 parts of sodium carbonate, 10 parts of graphene, 4 parts of potassium nitrate , 3.8 parts of cerium stearate, 10 parts of liquid paraffin, 5 parts of potassium permanganate, 4 parts of sodium lauryl sulfate, 14 parts of calcium fluoride, 8 parts of aluminum oxide, 2.8 parts of zinc powder and an appropriate amount of deionized water;

Embodiment 3

[0048] The preparation technology of sulfur-fixing agent is basically the same as embodiment 1, the difference is:

[0049] A flue gas sulfur-fixing agent used in the sodium sulfide synthesis process, consisting of the following raw materials in parts by weight: 90 parts of modified calcium carbonate powder, 13 parts of vermiculite powder, 4.5 parts of sodium carbonate, 12 parts of graphene, and 5 parts of potassium nitrate , 4.3 parts of cerium stearate, 12 parts of liquid paraffin, 6 parts of potassium permanganate, 5 parts of sodium lauryl sulfate, 15 parts of gypsum, 10 parts of silicon dioxide, 3.2 parts of copper powder and an appropriate amount of deionized water;

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Abstract

The invention relates to the technical field of preparation of sulfur-fixing agents, in particular to a flue gas sulfur-fixing agent used in a sodium sulfide synthesis process and a preparation process of the flue gas sulfur-fixing agent. The flue gas sulfur-fixing agent comprises the following raw materials in parts by weight: 80-90 parts of modified calcium carbonate powder, 10-13 parts of vermiculite powder, 3.6-4.5 parts of sodium carbonate, 7-12 parts of graphene, 3-5 parts of potassium nitrate, 3.5-4.3 parts of cerium stearate, 8-12 parts of liquid paraffin, 4-6 parts of potassium permanganate, 3-5 parts of sodium lauryl sulfate, 12-15 parts of an activator, 6-10 parts of a stabilizer, 2.2-3.2 parts of an auxiliary agent and a proper amount of deionized water. The sulfur-fixing agent prepared by the invention can ensure that sulfur-containing gas can be subjected to chemical reaction with effective components in the sulfur-fixing agent in time; therefore, the purpose of efficiently fixing sulfur is achieved, the emission amount of sulfur oxides is greatly reduced, and emission of sulfur-containing gas is reduced; the burden in environment-friendly treatment , and meanwhile, the service life of equipment and facilities is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of sulfur-fixing agent preparation, in particular to a flue gas sulfur-fixing agent used in a sodium sulfide synthesis process and a preparation process thereof. Background technique [0002] The production of sodium sulfide mainly adopts the coal powder reduction method, mixing Glauber’s salt and coal powder in a high temperature of 800-1100°C for calcination and reduction, the product is cooled and then melted into a liquid with dilute lye, after standing for clarification, the upper concentrated Concentrate the lye to obtain solid sodium sulfide. During this process, the sulfur contained in pulverized coal is discharged into the environmental protection system or the air in the form of sulfur dioxide and sulfur trioxide. The oxidation products of sulfur in the combustion process not only cause air pollution, but also, due to their corrosiveness, cause damage to equipment and other industrial facilities, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/50B01D53/86
CPCB01D53/81B01D53/508B01D53/8603B01D2258/0283
Inventor 唐拔明许园园徐炎杨宏唐雁
Owner 铜陵铜冠环保科技有限公司
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