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Complex iron desulfurizer as well as preparation method and application thereof

A technology of desulfurization agent and complex iron, which is applied in the field of desulfurization, can solve the problems of large amount of secondary salt, large amount of secondary salt, and difficulty in solid-liquid separation, so as to improve quality and value, have little effect of high temperature, and source of raw materials wide range of effects

Pending Publication Date: 2021-06-18
河北络合科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although complex iron desulfurization technology has made great progress in the field of gas desulfurization, it still has the following defects: 1) The sulfur capacity is small, the amount of secondary salts is large, and the temperature requirements are relatively strict. The higher the temperature, the higher the amount of secondary salts. 2) The generated sulfur particles are finer, solid-liquid separation is more difficult, and it is easy to cause equipment blockage; 3) Affected by the generated secondary salt, the obtained sulfur particles have low purity, which seriously affects the value of by-products

Method used

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  • Complex iron desulfurizer as well as preparation method and application thereof
  • Complex iron desulfurizer as well as preparation method and application thereof
  • Complex iron desulfurizer as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0023] A complex iron desulfurizer, comprising the following components by weight:

[0024] 0.4 parts of ferric nitrate, 2 parts of sodium iminodisuccinate, 2 parts of sodium polyaspartate, 10 parts of sodium carbonate, 1 part of sodium molybdate and 900 parts of water.

[0025] Dissolve ferric nitrate in water according to the above weight ratio, then add iminodisuccinic acid sodium salt, polyaspartic acid sodium, sodium molybdate and sodium carbonate in sequence, and adjust the pH value to 8 with sodium carbonate to obtain a complex Iron desulfurizer.

Embodiment 2

[0027] A complex iron desulfurizer, comprising the following components by weight:

[0028] 0.6 parts of ferric nitrate, 5 parts of potassium iminodisuccinate, 5 parts of potassium polyaspartate, 12 parts of ammonia water, 3 parts of sodium molybdate and 1000 parts of water.

[0029] Add ferric nitrate into water to dissolve according to the above weight ratio, then add potassium iminodisuccinate, potassium polyaspartate, sodium molybdate and ammonia water in sequence, adjust the pH value to 8.5 with ammonia water, and obtain complex iron desulfurization agent.

Embodiment 3

[0031] A complex iron desulfurizer, comprising the following components by weight:

[0032] 1 part of ferric nitrate, 10 parts of ammonium iminodisuccinate, 10 parts of ammonium polyaspartate, 15 parts of sodium hydroxide, 5 parts of sodium molybdate and 1100 parts of water.

[0033] Dissolve ferric nitrate in water according to the above weight ratio, then add ammonium iminodisuccinate, ammonium polyaspartate, sodium molybdate and sodium hydroxide in sequence, and adjust the pH value to 9 with sodium hydroxide to obtain Complex iron desulfurizer.

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Abstract

The invention relates to the technical field of desulfurization, and particularly discloses a complex iron desulfurizer as well as a preparation method and application thereof. The complex iron desulfurizer comprises, by weight, 0.4 to 1 part of a soluble iron salt, 2 to 10 parts of iminodisuccinate, 2 to 10 parts of polyaspartate, 10 to 15 parts of a hydrogen sulfide absorbent, 1 to 5 parts of a corrosion inhibitor and 900 to 1100 parts of water. The preparation method of the complex iron desulfurizer comprises the following steps: adding the soluble iron salt into water for dissolving according to the weight part ratio, then sequentially adding the iminodisuccinate, the polyaspartate, the corrosion inhibitor and the hydrogen sulfide absorbent, and adjusting the pH value to 8-9 to obtain the complex iron desulfurizer. The complex iron desulfurizer provided by the invention has the advantages of high sulfur capacity, low secondary salt generation amount and no temperature influence, and the generated sulfur particles have the advantages of high purity, large particle size and easiness in separation, and have relatively high application value.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a complex iron desulfurizer and its preparation method and application. Background technique [0002] Hydrogen sulfide is an acidic and toxic gas widely present in industrial gases. It is a colorless gas under normal conditions and is highly toxic (LC50=444ppm<500ppm). It is soluble in water and will overflow from water when heated. It is easily soluble in alcohol Organic solvents such as carbon disulfide and carbon disulfide have an ignition point of 292°C. They are flammable and hazardous chemicals, which can form explosive mixtures when mixed with air, and can cause combustion and explosion when exposed to open flames and high heat. [0003] The industrial gases produced from coal, oil, and natural gas contain different concentrations of hydrogen sulfide gas. Hydrogen sulfide will not only pollute the atmosphere and affect human health, but also cause corrosion of e...

Claims

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Application Information

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IPC IPC(8): B01D53/52B01D53/77C10K1/00C10K1/10
CPCB01D53/52B01D53/77C10K1/004C10K1/106B01D2251/80B01D2251/304B01D2251/604B01D2251/606B01D2251/60
Inventor 唐量苏俊岭赵全辉
Owner 河北络合科技有限公司
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