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Hydrogen sulfide treatment method and device

A hydrogen sulfide and sulfuric acid technology, applied in chemical instruments and methods, sulfur compounds, sulfur preparation/purification, etc., can solve problems such as increasing production costs, prolonging hydrogen sulfide treatment process, etc., to improve efficiency and reduce elemental sulfur. The effect of producing and operating at low cost

Active Publication Date: 2020-02-28
宜宾海翔化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process requires a large amount of sodium hydroxide to participate in the process, which prolongs the hydrogen sulfide treatment process. At the same time, it needs to purchase lye to participate in the reaction, which increases the production cost of the company.

Method used

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  • Hydrogen sulfide treatment method and device
  • Hydrogen sulfide treatment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for treating hydrogen sulfide, comprising the steps of:

[0049] (a) Pass sulfuric acid into the reaction tank 1, then pass hydrogen sulfide into the sulfuric acid through aeration, and simultaneously pass the sulfuric acid in the reaction tank 1 into the reaction tank 1 repeatedly by spraying;

[0050] (b) the separation of sulfur dioxide and its use in the production of sulfuric acid;

[0051] (c) Separation of sulfur and use of the separated sulfur in the production of sulfuric acid.

[0052] Further, in step (a), hydrogen sulfide and sulfuric acid react under heating conditions, and the heating temperature is 65±10°C.

[0053] Further, the pressure in the reaction tank 1 in step (a) is negative pressure.

[0054] Further, the negative pressure is controlled from -0.9kpa to -2.0kpa.

[0055] Further, in step (a), the sulfuric acid spray pressure is 0.3-0.5Mpa, the spray flow rate is 80-150m³ / h; the hydrogen sulfide aeration pressure is 10±1.5kpa, and the ae...

Embodiment 2

[0066] A method for treating hydrogen sulfide, comprising the steps of:

[0067] (a) Pass sulfuric acid into the reaction tank 1, then pass hydrogen sulfide into the sulfuric acid through aeration, and heat the reaction tank 1 to make sulfuric acid and hydrogen sulfide react to produce sulfur dioxide as the main product. The sulfuric acid repeatedly passes in the reaction tank 1 by the mode of spraying;

[0068] (b) the separation of sulfur dioxide and its use in the production of sulfuric acid;

[0069] (c) Separation of sulfur and use of the separated sulfur in the production of sulfuric acid.

Embodiment 3

[0071] On the basis of Example 2, further, the heating temperature is 65±10°C.

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Abstract

The invention relates to a hydrogen sulfide treatment method which comprises the following steps: (a) introducing sulfuric acid into a reaction tank, introducing hydrogen sulfide into sulfuric acid inan aeration manner, and repeatedly introducing sulfuric acid in the reaction tank into the reaction tank in a spraying manner; (b) separating out sulfur dioxide which is used for producing sulfuric acid; and (c) separating out sulfur, wherein the separated sulfur is used for producing sulfuric acid. Hydrogen sulfide is treated with sulfuric acid, and is used for preparing acid; the hydrogen sulfide treatment method has the advantages of low operation cost and capability of turning waste into wealth.

Description

technical field [0001] The invention relates to the field of hydrogen sulfide treatment, in particular to a method and device for hydrogen sulfide treatment. Background technique [0002] In the production process of viscose, hydrogen sulfide waste gas will be produced. In the existing technology, high-concentration hydrogen sulfide waste gas is incinerated to produce sulfuric acid, while low-concentration hydrogen sulfide waste gas is treated by alkali spraying, and sodium hydrosulfide is produced. It reacts and enriches with acid water to produce hydrogen sulfide and enters the system again for combustion. This process requires a large amount of sodium hydroxide to participate in the process, which prolongs the hydrogen sulfide treatment process. At the same time, it needs to purchase lye to participate in the reaction, which increases the production cost of the company. Contents of the invention [0003] The object of the present invention is to solve the above-mention...

Claims

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Application Information

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IPC IPC(8): C01B17/50C01B17/02C01B17/74
CPCC01B17/503C01B17/508C01B17/02C01B17/74
Inventor 尹继国于洋胡军
Owner 宜宾海翔化工有限责任公司
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