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Acid gas separation and sulfur recovery integrated device and method for synthesis gas

A synthesis gas and sulfur recovery technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems such as complex processes, and achieve the effects of simple process flow, simplified operation, and fewer control parameters

Active Publication Date: 2016-09-21
CHINA HUANENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages that acid gas separation and sulfur recovery in the synthesis gas desulfurization process must be divided into two separate processes and the process is complicated, the present invention proposes an integrated device and method for synthesis gas acid gas separation and sulfur recovery

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  • Acid gas separation and sulfur recovery integrated device and method for synthesis gas
  • Acid gas separation and sulfur recovery integrated device and method for synthesis gas
  • Acid gas separation and sulfur recovery integrated device and method for synthesis gas

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Embodiment Construction

[0037] The specific implementation manner of the present invention will be described below in combination with specific implementation examples.

[0038] Such as figure 1 As shown, this embodiment is illustrated by applying the device and method of the present invention to desulfurization and sulfur recovery of syngas in an IGCC power plant. In the IGCC power plant, the coal first completes the gasification process in the gasifier, and generates 2 The crude synthesis gas of S pollutants must be purified and desulfurized before the synthesis gas is sent to the gas turbine for power generation.

[0039] After the synthesis gas from the gasifier is firstly deashed and washed with water, only H is left in the synthesis gas. 2 S pollutant composition, synthesis gas pressure 3.0MPag, temperature 40°C, of ​​which H 2 The content of S component, determined according to the type of coal used, is about 0.147% of the total volume. As shown in the figure, the sulfur-containing synthes...

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Abstract

The invention discloses an acid gas separation and sulfur recovery integrated device and method for synthesis gas. An alkaline solution is adopted as an H2S absorbent, according to the wet sulfur oxide recycling principle, after the solution washes synthesis gas with pressure in an absorbing tower and absorbs H2S, pressure is reduced, the synthesis gas is fed into a pressure reduction tower to release and recycle combustible gas carries by the solution and then fed into a regeneration tower, a large quantity of air is fed into the solution through air blowing, catalytic oxidation is carried out to generate solid sulphur, and the solution is regenerated; the regeneration solution with sulphur separated out is heated for deoxygenization, then subjected to pressurization and fed into the absorbing tower for washing synthesis again. Synthesis gas desulfuration and sulfur recovery are integrated, only one solution is adopted, combustible gas recovery and regeneration solution deoxygenization processes are specially set, loss of effective ingredients of synthesis gas is reduced, and the system is simplified on the premise of not lowering desulfuration and sulfur recovery efficiency.

Description

technical field [0001] The invention belongs to the technical field of synthesis gas purification, in particular to a method for purifying H in synthesis gas. 2 An integrated device and method for S removal and sulfur recovery. Background technique [0002] Coal has long occupied an important position in my country's energy and chemical fields. The clean and resourceful utilization of coal is an important way to solve the long-term inefficiency and pollution problems associated with direct combustion of coal in my country. Among them, the generation of synthesis gas after gasification of coal through gasification furnace is one of the important ways of coal cleanliness and resource utilization. Whether in the field of integrated gasification combined cycle power generation (IGCC) or coal chemical industry, the utilization of coal must first be converted into synthesis gas through a gasifier. [0003] Since the gasification raw material, ie, coal, contains a certain amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/52
CPCB01D53/1468B01D53/8612B01D2251/102B01D2252/10B01D2255/20738B01D2255/808B01D2258/05
Inventor 陈新明张波史绍平闫姝穆延非许东灏
Owner CHINA HUANENG GRP CO LTD
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