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Flue gas sulfur-fixing agent used in a kind of sodium sulfide synthesis process and preparation technology thereof

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 improving the heat transfer rate

Active Publication Date: 2022-07-19
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, increasing the pressure of environmental protection treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A flue gas sulfur-fixing agent used in a sodium sulfide synthesis process, consisting of the following raw materials by weight: 80 parts of modified calcium carbonate powder, 10 parts of vermiculite powder, 3.6 parts of sodium carbonate, 7 parts of graphene, 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] 1. Preparation of porous calcium carbonate powder:

[0034] Under the condition of mechanical stirring, add sodium dioctyl succinate sulfonate with a mass of 20% to the calcium chloride aqueous solution with a concentration of 0.35mol / L; after mixing and stirring, use an appropriate amount of sodium hydroxide solution to Its pH i...

Embodiment 2

[0045] The preparation process of the sulfur-fixing agent is basically the same as that of Example 1, and the difference is:

[0046] A flue gas sulfur-fixing agent used in a 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 process of the sulfur-fixing agent is basically the same as that of Example 1, and the difference is:

[0049] A flue gas sulfur-fixing agent used in a sodium sulfide synthesis process, consisting of the following raw materials by weight: 90 parts of modified calcium carbonate powder, 13 parts of vermiculite powder, 4.5 parts of sodium carbonate, 12 parts of graphene, 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 a sulfur-fixing agent, in particular to a flue gas-sulfur-fixing agent used in a sodium sulfide synthesis process and a preparation process thereof; it is composed of the following raw materials by weight: 80-90 parts of modified calcium carbonate powder, 10 parts of ~13 parts vermiculite powder, 3.6~4.5 parts sodium carbonate, 7~12 parts graphene, 3~5 parts potassium nitrate, 3.5~4.3 parts cerium stearate, 8~12 parts liquid paraffin, 4~6 parts permanganic acid Potassium, 3-5 parts of sodium lauryl sulfate, 12-15 parts of activator, 6-10 parts of stabilizer, 2.2-3.2 parts of auxiliary agent and appropriate amount of deionized water; the sulfur-fixing agent prepared by the present invention can ensure the sulfur-containing gas It can chemically react with the active ingredients in the sulfur-fixing agent in time; thus achieving the purpose of high-efficiency sulfur-fixing, greatly reducing the emission of sulfur oxides and reducing the emission of sulfur-containing gases; while reducing the pressure of environmental protection, it also makes the The life of equipment and facilities is effectively extended.

Description

technical field [0001] The present 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. Glauber's salt and coal powder are mixed in proportion and calcined and reduced at a high temperature of 800 to 1100 °C. The lye solution is concentrated 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. Combustion Process Sulfur oxidation products not only cause atmospheric pollution, but also cause damage to equipment and other industrial facilities due to their corrosiveness, resulting in poor production and high maintenance costs. Through the reaction process, the produ...

Claims

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Application Information

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Patent Type & Authority Patents(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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