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Column and machine combined gas desulphurization process device and desulphurization method thereof

A desulfurization process, combined with gas technology, applied in the direction of liquid scrubbing gas purification, etc., can solve the problems of increased sulfur sulfide content in gas, no waste liquid treatment process, etc., achieve pollution-free secondary pollution, improve operating environment and product storage and transportation The difficulty of the desulfurization equipment and the efficient effect of the desulfurization equipment

Inactive Publication Date: 2012-07-25
JIANGSU ZHONGXIAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the HPF desulfurization process, PDS desulfurization process, etc., there is no matching waste liquid treatment process
[0004] In addition, the quality of raw coal used in coal chemical industry and coal-to-gas production has a tendency to contain high sulfur content, which will inevitably increase the sulfur content of coal gas.

Method used

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  • Column and machine combined gas desulphurization process device and desulphurization method thereof
  • Column and machine combined gas desulphurization process device and desulphurization method thereof
  • Column and machine combined gas desulphurization process device and desulphurization method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 1 As shown, the first type of tower-crane combined gas desulfurization process device is a two-stage desulfurization system sharing a set of regeneration system. Sulfur-containing gas (gas) 1 first enters from the bottom of the packed absorption tower (desulfurization tower) 2, contacts upward with the desulfurization liquid 10 entering from the top, absorbs by convection reaction, and the preliminarily purified gas is discharged from the top of the packed absorption tower 2 and enters The cyclone type supergravity desulfurizer 3 reacts strongly with the desulfurization liquid again in the cyclone type supergravity desulfurizer 3, and the purified gas 7 is ejected through the cyclone type supergravity desulfurizer 3 and enters the next section.

[0019] The desulfurization liquid in the packed absorption tower 2 and the cyclone supergravity desulfurizer 3 flows into the reaction tank 5, and is then pressurized by the rich liquid pump to the half-tower regene...

Embodiment 2

[0021] like figure 2 , The first type of tower crane combined with gas desulfurization process device sets up regeneration systems independently for each of the two-stage desulfurization systems. Sulfur-containing gas (gas) 1 first enters the packed absorption tower (desulfurization tower) 2, and is in convective contact with the desulfurization liquid 10 sprayed from the top of the tower, thereby removing hydrogen sulfide in the gas, and the preliminarily purified gas is absorbed from the packing The tower 2 tops out and enters the cyclone supergravity desulfurizer 3, where it reacts strongly with the desulfurization liquid again in the cyclone supergravity desulfurizer 3, and the purified gas 7 is topped out through the cyclone supergravity desulfurizer 3 , enter the next section.

[0022] The desulfurized rich liquid in the packed absorption tower 2 flows to the reaction tank 5 by itself, and then is sent to the half-tower regeneration tower 4 by the rich liquid pump unde...

Embodiment 3

[0024] No matter whether the process device of Example 1 or Example 2 is used, in order to not produce sulfur bubbles or sulphur in the desulfurization process, any lye solution of ammonia or sodium-alkali is used as the desulfurization liquid, and polyquinone is used as the desulfurization liquid. Sulfonates and phenolic compounds act as catalysts (ZZNQ). The desulfurization liquid is suitable for the packed absorption tower 2 and the cyclone supergravity desulfurizer 3. Its desulfurization mechanism is:

[0025] With lye (M ＋ ) absorbs acid gases such as hydrogen sulfide and hydrogen cyanide from the process gas, and the catalyst simultaneously oxidizes part of the generated hydrogen sulfide (M.HS) into polysulfide (M.HS) 2 S nx+1 ), the polysulfide reacts rapidly with hydrogen cyanide in solution to form thiocyanate (MCNS). Regeneration of catalyst (NQ=O) by reaction with air oxygen.

[0026] The reaction formula of the absorption process is:

[0027] H 2 S+M ＋ →M.H...

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Abstract

The invention discloses a column and machine combined gas desulphurization process device which comprises desulphurization equipment and regenerative equipment. The desulphurization equipment comprises secondary desulphurization equipment comprising a packing absorbing column and a spiral-flow type supergravity desulphurization machine; sulfurous gas firstly enters the packing absorbing column for desulphurization, and then enters the spiral-flow type supergravity desulphurization machine for desulphurization firstly and then discharging; desulphurization solution enters the packing absorbing column and the spiral-flow type ultragravity desulphurization machine from tops for convection elution with the sulfurous gas, is discharged from the bottoms when the convection elution is finished, and then enters the regenerative equipment for regeneration; regenerative desulphurization solution is recycled; and waste fluid produced enters a subsequent salt extraction process for salt extraction treatment. The technology and the device can not only be suitable for gas with high hydrogen sulfide content, but also meet the index of the hydrogen sulfide content of desulfurated gas; sulfur foam is not produced during the desulphurization operation, and sulfur is not produced; the desulphurization equipment is efficient, and has light weight and low cost; and the desulphurization operation does not cause environment pollution and secondary pollution.

Description

technical field [0001] The invention relates to a gas desulfurization process device, in particular to a tower-machine combined desulfurization process device and a desulfurization method thereof. Background technique [0002] In addition to the cyclic absorption process, the currently used desulfurization processes in coal chemical industry are mainly catalytic oxidation methods with higher desulfurization efficiency. Other desulfurization methods using these catalysts as the main catalyst. The main problem of this type of process is that the function of the catalyst is to convert hydrogen sulfide into elemental sulfur, and form sulfur bubbles in the desulfurization liquid. Sulfur foam and even raw sulfur are difficult to use directly due to high water content, and it is difficult to burn directly, and the operating environment is particularly bad during thermal processing. Sulfur market prices are low. Storage and transportation are extremely inconvenient. Because the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/08
Inventor 袁长胜张超群程晓辉张巨水
Owner JIANGSU ZHONGXIAN GRP CO LTD
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