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Gas purification device and gas purification method

A gas purification device and gas purification technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problem of low reaction temperature and achieve the effect of reducing carbonyl sulfide

Active Publication Date: 2021-07-20
三菱重工工程株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the reaction temperature of the hydrolysis of carbonyl sulfide is too low, trace components such as ammonia, halogens, and hydrocarbons contained in the coal gasification gas may be precipitated.
Therefore, in the COS converter, carbonyl sulfide is hydrolyzed at a temperature higher than the temperature at which the trace components are analyzed. to the expected concentration

Method used

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  • Gas purification device and gas purification method
  • Gas purification device and gas purification method
  • Gas purification device and gas purification method

Examples

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no. 1 approach

[0030] figure 1 It is a schematic diagram showing an example of the gas purification device 1 according to the first embodiment of the present invention.

[0031] Such as figure 1 As shown, the gas purification device 1 of the present embodiment includes the following: a gasification furnace (gasification part) 11 supplied with a raw material F and an oxidizing agent O; a conversion section) 12 (hereinafter referred to as "the first COS converter 12"); a first scrubber (first scrubber) 13 located at the rear stage of the first COS converter 12; a first scrubber located in the first scrubber The second carbon sulfide converter (second conversion unit) 14 (hereinafter referred to as "second COS converter 14") at the rear stage of 13; the second scrubber ( second washing section) 15; a desulfurization tower (desulfurization section) 16 provided at the rear stage of the second washing tower 15. A gas turbine 17 is provided at the rear stage of the desulfurization tower 16 .

...

no. 2 approach

[0058] Next, a second embodiment of the present invention will be described. In addition, in each of the following embodiments, the description will focus on the points of difference from the above-mentioned first embodiment, and duplication of description will be avoided. In addition, the same code|symbol is attached|subjected to the component common to the said 1st Embodiment. In addition, each of the following embodiments can be implemented in combination as appropriate.

[0059] Figure 4 It is a schematic diagram showing an example of the gas purification device 4 according to the second embodiment of the present invention.

[0060] Such as Figure 4 As shown, the gas purification device 4 of this embodiment includes the following: a gasification furnace (gasification part) 11 supplied with a raw material F and an oxidizing agent O; a hydrogen cyanide converter 21 (hereinafter referred to as , referred to as "HCN converter 21"); the first scrubber (first scrubber) 13 ...

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Abstract

Provided are a gas purification device and a gas purification method capable of efficiently reducing the concentration of carbonyl sulfide in a gas to be processed even when the concentration of carbonyl sulfide in the gas to be processed is high. The gas purifying device (1) is provided with the following: a first COS converter (12), which, in the presence of a first catalyst, performs gasification gas (G 1 ) contains hydrogen cyanide into a first conversion treatment of ammonia; a second COS converter (14), in the presence of a second catalyst, at a second specified temperature lower than the first specified temperature, to make the first Converted gasified gas (G 3 The carbonyl sulfide in ) becomes the second conversion treatment of hydrogen sulfide; The first scrubber (13), which carries out making the gasification gas (G 2 ) and the scrubbing liquid generate gas-liquid contact to wash and remove the scrubbing treatment of ammonia; desulfurization tower (16), which makes the gasification gas (G) after scrubbing treatment 5 ) gas-liquid contact with the absorbing liquid to absorb and remove gasification gas (G 5 ) in hydrogen sulfide.

Description

technical field [0001] The present invention relates to a gas purification device and a gas purification method, for example, to a gas purification device and a gas purification method for purifying a gas to be processed such as coal gasification gas. Background technique [0002] Conventionally, a gas purification device equipped with a COS converter for converting carbonyl sulfide in gas to be processed such as coal gasification gas into hydrogen sulfide has been proposed in the presence of a catalyst (for example, refer to Patent Document 1). In the COS converter of this gas purification device, carbonyl sulfide contained in coal gasification gas is hydrolyzed into hydrogen sulfide and carbon dioxide through a hydrolysis reaction represented by the following reaction formula (1). [0003] [0004] [Prior Art Literature] [0005] 【Patent Literature】 [0006] [Patent Document 1] Patent No. 4227676 [0007] Then, the hydrolysis reaction shown in the above reaction form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14C10K1/08C10K1/34
CPCC10K1/08C10K1/34C10K1/006C10K1/004B01D53/8603B01D53/869B01D53/8621B01D53/1468B01D53/1406B01D2257/408B01D2257/308B01D2255/20707B01D2252/103B01D2255/20753B01D2255/1026B01D2255/20746B01D2255/20769B01D2255/2042B01D53/14
Inventor 吉田香织平山晴章菅利喜雄挂迫诚治
Owner 三菱重工工程株式会社