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Slight hydrogen sulfide removal device and method in acidic gas

An acid gas and hydrogen sulfide technology, which is applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of high requirements for equipment decay, unsuitable acid gas, and high equipment cost, and achieves low equipment investment and good desulfurization. Hydrogen effect, easy operation effect

Active Publication Date: 2014-02-19
浙江丽晶化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently known conventional oxidation method for hydrogen sulfide removal is suitable for the removal of a large amount of hydrogen sulfide, and is not suitable for the removal of a small amount of hydrogen sulfide in acidic gases; (4) Decomposition method: including thermal decomposition and microwave technology decomposition, requiring special special Equipment, the cost of equipment is high, and the gas containing hydrochloric acid in the gas has high requirements for equipment corrosion, and it is not suitable for the removal of a small amount of hydrogen sulfide in acid gas

Method used

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  • Slight hydrogen sulfide removal device and method in acidic gas
  • Slight hydrogen sulfide removal device and method in acidic gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Step (1). The acid gas tail gas containing hydrogen sulfide produced in the reactor is passed into the bubbling absorber 1 equipped with hydrogen peroxide through a pipeline;

[0054] The used hydrogen peroxide concentration of bubbling absorber 1 in the described step (1) is 1%, and the hydrogen peroxide amount is 100KG in bubbling absorber 1;

[0055] The concentration of hydrogen sulfide in the acid gas tail gas is 0 50g / M 3 , the average is 5g / M 3 ;

[0056] Step (2). The gas treated by the bubbling absorber 1 enters the falling film absorption tower 2 equipped with hydrogen peroxide, and after the gas and the hydrogen peroxide solution are absorbed in the same direction by the falling film, the remaining gas is evacuated by a fan;

[0057] Hydrogen peroxide concentration is 0.5% in falling film absorption tower 2 in described step (2); Hydrogen peroxide amount is 400KG in falling film absorption tower 2;

[0058] The hydrogen sulfide concentration in the remai...

Embodiment 2

[0064] Step (1). The acid gas tail gas containing hydrogen sulfide produced in the reactor is passed into the bubbling absorber 1 equipped with hydrogen peroxide through a pipeline;

[0065] The used hydrogen peroxide concentration of bubble absorber 1 in described step (1) is 25%, and hydrogen peroxide amount is 200KG in bubble absorber 1;

[0066] The concentration of hydrogen sulfide in the acid gas tail gas is 0 50g / M 3 , the average is 5g / M 3 ;

[0067] Step (2). The gas treated by the bubbling absorber 1 enters the falling film absorption tower 2 equipped with hydrogen peroxide. After the gas and the hydrogen peroxide solution are absorbed in the same direction by the falling film, the remaining gas is evacuated by a fan;

[0068] Hydrogen peroxide concentration is 5.5% in falling film absorption tower 2 in described step (2); Hydrogen peroxide amount is 750KG in falling film absorption tower 2;

[0069] The hydrogen sulfide concentration in the remaining gas discha...

Embodiment 3

[0075] Step (1). The acid gas tail gas containing hydrogen sulfide produced in the reactor is passed into the bubbling absorber 1 equipped with hydrogen peroxide through a pipeline;

[0076] The used hydrogen peroxide concentration of bubbling absorber 1 in described step (1) is 35%, and hydrogen peroxide amount is 300KG in bubbling absorber 1;

[0077] The concentration of hydrogen sulfide in the acid gas tail gas is 0 50g / M 3 , the average is 5g / M 3 ;

[0078] Step (2). The gas treated by the bubbling absorber 1 enters the falling film absorption tower 2 equipped with hydrogen peroxide, and after the gas and the hydrogen peroxide solution are absorbed in the same direction by the falling film, the remaining gas is evacuated by a fan;

[0079] Hydrogen peroxide concentration is 10% in falling film absorption tower 2 in described step (2); Hydrogen peroxide amount is 1000KG in falling film absorption tower 2;

[0080] The hydrogen sulfide concentration in the remaining ga...

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Abstract

The invention discloses a slight hydrogen sulfide removal device and method in acidic gas. Although many known conventional desulfurization methods exist in industrial production at present, many problems exist. The device disclosed by the invention comprises a bubbling absorber, a falling film absorption column, a first centrifugal pump, an oxydol elevated tank, a filter, a storage tank and a second centrifugal pump. The technological process comprises steps as follows: firstly, acidic gas exhaust containing hydrogen sulfide, which is generated in a reaction kettle, is introduced into the bubbling absorber containing oxydol; secondly, the gas treated by the bubbling absorber enters the falling film absorption column containing oxydol, and the gas is evacuated by a blower after the gas and oxydol solution are equidirectionally absorbed by the falling film; and finally, after sulfur, which is generated after the hydrogen sulfide in the bubbling absorber and the falling film absorption column is oxidized by the oxydol, reaches to a certain amount, the absorption liquid is driven into the filter to remove the sulfur, and is recirculated to return to the falling film absorption column, and thick oxydol is supplemented. The invention has the advantages of simple technological process, high practicality and high economy, and is simple to operate.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and in particular relates to a device and method for removing a small amount of hydrogen sulfide in acid gas. Background technique [0002] Hydrogen sulfide is a colorless and highly toxic gas with the smell of rotten eggs. The olfactory threshold is 0.00041ppm. This product is a strong neurotoxin, which has a strong stimulating effect on the mucous membrane and is extremely harmful to the human body. Hydrogen sulfide is unavoidable as a by-product in the chemical production process, and it can be vulcanized in mining, non-ferrous metal smelting, low-temperature coking of coal, mining and refining of sulfur-containing oil, and in industrial processes such as rubber, leather, dyes, and sugar. Hydrogen is produced. [0003] Technically, the H in the exhaust 2 S removal methods are divided into: (1) absorption method: physical solvent absorption, chemical solvent absorpt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/52
Inventor 颜国和张达贵冯常凯曽灶兴梁建明
Owner 浙江丽晶化学有限公司