Purification process for removing sulphur and carbon dioxide in gas by using two-step method

A carbon dioxide, purification process technology, applied in the direction of combustible gas purification, combustible gas purification/renovation, petroleum industry, etc., can solve the problems of complex device process, inconvenient operation and management, large diameter and so on

Active Publication Date: 2010-11-17
SEDIN ENG
View PDF3 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the desulfurization of crude gas adopts general liquid-phase wet oxidation methods such as improved ADA and tannin extraction, etc., it can also meet the desulfurization and purification requirements. However, the biggest defect of these desulfurization methods is the low sulfur capacity of the solution. However, there are disadvantages such as large amount of solution circulation required, large number of ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Purification process for removing sulphur and carbon dioxide in gas by using two-step method
  • Purification process for removing sulphur and carbon dioxide in gas by using two-step method
  • Purification process for removing sulphur and carbon dioxide in gas by using two-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] In this embodiment, the raw gas processed by the process of the present invention is raw gas from coal gasification, and the processing capacity of low-pressure high-sulfur crude gas: 120000Nm 3 / h, temperature: 40°C, pressure: 0.5MPa, the specific gas composition of high-sulfur crude gas is:

[0071] composition

H 2

CO

CO 2

CH 4

N 2

h 2 S

COS

∑

V％

40.16

30.00

27.40

0.70

0.51

1.11

0.12

100.0

[0072] After the low-pressure crude gas desulfurization step described in the process of the present invention, the total sulfur content is reduced to about 500ppm, then sent to the factory compression section to pressurize to about 3.5MPa, and partially converted in the carbon monoxide conversion device to meet the methanol Synthesize the required hydrogen / carbon ratio, and then return the converted gas to the device described in the process of the pr...

Embodiment 2

[0110] In this embodiment, the raw gas processed by the process of the present invention is a high-sulfur crude gas from a coal gasification device, and the processing capacity of low-pressure high-sulfur crude gas: 180000Nm 3 / h, temperature: 40°C, pressure: 0.85MPa, the specific gas composition of high-sulfur crude gas is:

[0111] composition

H 2

CO

CO 2

CH 4

N 2

h 2 S

COS

NH 3

∑

V％

41.20

28.60

28.10

0.65

0.50

0.85

0.10

50-80ppm

100.0

[0112] After the low-pressure crude gas desulfurization step described in the process of the present invention, the total sulfur content is reduced to about 500ppm, then sent to the factory compression section to pressurize to 3.7MPa, and partially converted in the carbon monoxide conversion device, and then the gas is converted Return to the device described in the process of the present invention to perform steps such as hig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a purification process for removing sulphur and carbon dioxide in gas by using a two-step method. The purification method comprises six steps as follows: the crude desulphurization of low-pressure high-sulphur gas, desulphurization of high-pressure gas, CO2 removal, the regeneration of decarburization solution, the regeneration of desulfurization solution and H2S concentration, and heat regenerating system. The purification process has the advantages of low energy consumption, low operation strength, simple process and high purification.

Description

technical field [0001] The invention belongs to a coal gas purification process, in particular to a purification process for removing sulfur and carbon dioxide in the coal gas. Background technique [0002] In the crude gas produced by some high-sulfur coal gasification processes, the pressure of the gas is low but the sulfur content is very high. This working condition will have a very adverse impact on the selection and operation of the gas compressor. Therefore, it is required to desulfurize the crude gas first, then compress it and then carry out transformation, fine desulfurization, decarburization and other processes. If the desulfurization of crude gas adopts general liquid-phase wet oxidation methods such as improved ADA and tannin extraction, etc., it can also meet the desulfurization and purification requirements. However, the biggest defect of these desulfurization methods is the low sulfur capacity of the solution. However, there are disadvantages such as large ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C10K1/18C10K1/26
Inventor 张琦宇王骏李晓黄顺泰李刚尚书娟张凤娟
Owner SEDIN ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap