Process for removing hydrogen sulphide from carbon bisulfide waste gas and apparatus therefor

A technology for hydrogen sulfide removal and exhaust gas desulfurization, which is applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of reduced catalyst activity, low operating costs, and complicated operations, and achieves reduced treatment costs and low operating costs , the effect of reducing operating costs

Inactive Publication Date: 2007-11-14
丹东多纶机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Catalytic method, using a catalyst to remove H 2 S is basically based on the Claus reaction, and some use organic solvents to carry out liquid phase reactions to recover sulfur. This method is complicated to operate and expensive, or it is carried out under gas phase conditions, and the sulfur produced by this method adheres to the surface of the catalyst. , reducing catalyst activity, thus catalyst regeneration and catalyst service life directly affect treatment and recovery costs
[0007] At present, there is no report on the method of hydrogen sulfide removal with low investment and low operating cost.

Method used

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  • Process for removing hydrogen sulphide from carbon bisulfide waste gas and apparatus therefor
  • Process for removing hydrogen sulphide from carbon bisulfide waste gas and apparatus therefor

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 The exhaust from the spinning machine to the cluster, the exhaust gas recovered by condensation in the plasticizing bath and the exhaust gas recovered by degassing in the acid bath are fed into the waste gas inlet 4 of the 1# pipe absorber 102-1 through the fan 101 at a speed of 25 m / s 1# tubular absorber 102-1 with a length of 10m and a diameter of 50mm, see attached drawing 2 for the structure, 6 sets of absorption liquid feed pipes 2 are installed in the pipe body 1, and each set of absorption liquid feed pipes 2 is equipped with a spray Head 3 (the spray head is a commercially available product), the absorption liquid feed pipe is connected to the absorption liquid circulation pump 105, the inlet of the circulation pump 105 is connected to the outlet of the mixed liquid tank 104-2, and the desulfurization gas outlet of the 1# tubular absorber 102-1 5. Connect to the inlet of double-block separator 103-1, and the waste gas outlet of double-block separator 10...

Embodiment 2

[0027] Example 2 The exhaust from the spinning machine to the cluster, the exhaust gas recovered by condensation in the plasticizing bath and the exhaust gas recovered by degassing in the acid bath are fed into the waste gas inlet 4 of the 1# tubular absorber 102-1 through the fan 101 at a speed of 100 m / s 1# tubular absorber 102-1 with a length of 20m and a diameter of 300mm, the structure is shown in attached drawing 2, 10 groups of absorption liquid feed pipes 2 are installed in the pipe body 1, and each group of absorption liquid feed pipes 2 is equipped with 6 spray nozzles Head 3 (the spray head is a commercially available product), the absorption liquid feed pipe 2 is connected to the absorption liquid circulation pump 105, the inlet of the circulation pump 105 is connected to the discharge port of the mixed liquid tank 104-2, and the 1# tubular absorber 102-1 desulfurizes the gas Outlet 5 is connected to the inlet of double-block separator 103-1, and the waste gas outle...

Embodiment 3

[0028] Example 3 The exhaust from the spinning machine to the cluster, the exhaust gas recovered by condensation in the plasticizing bath and the exhaust gas recovered by degassing in the acid bath are sent from the waste gas inlet 4 of the 2# tubular absorber 102-2 through the fan 101 at a speed of 50 m / s 2# tubular absorber 102-2 with a length of 40m and a diameter of 700mm (refer to Figure 1, omitting the 1# tubular absorber and supporting equipment), and 26 groups of absorption liquid feed pipes 2 are installed in the pipe body 1, each The group of absorption liquid feed pipes 2 is equipped with 10 spray heads 3, the absorption liquid feed pipe 2 is connected to the absorption liquid preparation tank 106, and sodium hydroxide is used in the absorption liquid preparation tank 106 to prepare the absorption liquid containing 200 g / L of sodium hydroxide It is sent to the tubular absorber 102-2 at 0.3 MPa, and the absorption liquid is atomized by the spray head 3, and the droplet ...

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Abstract

The present invention relates to a carbon disulfide waste gas dehydrosulfurization process and its dehydrosulfurization equipment. It is mainly characterized by that said dehydrosulfurization adopts tubular absorber with spray head in stead of general spray-type absorption tower, so that the H2S removing rate can be up to 99.5%-100%.

Description

technical field [0001] The invention relates to an industrial gas treatment method, in particular to a hydrogen sulfide treatment method. Background technique [0002] Hydrogen sulfide is often contained in industrial gases, such as gas and carbon disulfide in the waste gas of viscose fiber production. When the gas is used or the waste gas is discharged, it will pollute the environment, especially the waste gas emitted from viscose fiber production. The main component is containing CS 2 and H 2 S gas, where CS 2 About 80%, H 2 S is 20%, the annual production of viscose fiber in my country has reached about 1 million tons, and CS is needed 2 About 300,000 tons, excluding the CS currently recovered by condensation 2 About 30% to 40%, there are still about 200,000 tons of CS 2 and H 2 S is discharged at high altitude or fugitively. In this regard, many aspirants have done research, and there are many governance methods, which can be summarized as follows: [0003] Alka...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52C01B31/26
Inventor 张增频刘海光黄迎春于伟杨晶文
Owner 丹东多纶机械厂
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