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Method and apparatus for obtaining gas product and liquid methane from synthesis gas

A gas product, methane technology, applied in lighting and heating equipment, chemical instruments and methods, hydrocarbons, etc., to achieve low-cost effects

Inactive Publication Date: 2013-09-11
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such processes require compressors or upstream process units to be adapted to this residual gas in a complex manner, which can result in additional costs and / or other operational problems

Method used

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  • Method and apparatus for obtaining gas product and liquid methane from synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0033] Example A: According to a particularly preferred embodiment of the invention, the residual gas 60 is sent upstream of the first heat exchanger W1 to the feed 4 in which the feed 4 is cooled.

Embodiment B

[0034] Example B: According to another preferred embodiment of the present invention, the residual gas 60 is guided through the heat exchanger W1 using its own channel and sent to the material flow downstream of the first heat exchanger W1 and upstream of the second heat exchanger W2 111, the stream consists of a portion of feed 101 cooled in heat exchanger W1 and stream 105 heated in heat exchanger W3.

Embodiment C

[0035] Example C: According to another preferred embodiment of the invention, the residual gas 60 is guided through the heat exchanger W1 with its own channel and sent upstream of the heat exchanger W3 to a subsection 102 of the feed.

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Abstract

The invention relates to a method for producing at least one gas product (5) and a product (10) with most methane from a feedstock (4) including hydrogen, carbon monoxide and methane, wherein hydrogen and carbon monoxide add together from 10 to 95 percent by volume from the feedstock. The feedstock is separated from a synthesis raw gas. The synthesis raw gas is separated into a carbon dioxide product, acidic gas fraction, residual gas (60) and the feedstock. A two-column process is utilized to carry out a cryogenic gas separation into multiple fractions. The residual gas is returned into a hydrogen or carbon monoxide-methane separation unit such that a lossless methane process operation is performed. An independent claim is also included for a device for applying the method.

Description

technical field [0001] The present invention relates to a process for the production of at least one gaseous product and a product with a preponderance of methane from a feed containing hydrogen, carbon monoxide and methane, wherein the hydrogen and carbon monoxide content of the feed totals from 10 to 95% by volume, and This feed is separated from the synthesis raw gas, which is separated into CO 2 Products, acid gas fractions, residual gases and feed, where the so-called double column process is used for cryogenic gas separation into fractions. Background technique [0002] For example by publication DE102007013325A1 discloses a kind of method, this method is provided with the H 2 / CO-CH 4 separate unit. During this process, a low-pressure residual gas is produced, which is discharged at the edge of the plant. According to DE 10 2007 013 325 A1, this gas should then be processed in an upstream process unit or compressed back to H 2 / CO-CH 4 Raw gas pressure for the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J3/02C01B3/50C07C9/04C07C7/00
CPCF25J3/0223F25J3/0233F25J3/0252F25J3/0261F25J2200/40F25J2205/30F25J2210/04F25J2215/02F25J2215/04F25J2230/30F25J2245/02F25J2270/42F25J2270/66
Inventor H·施密特
Owner LINDE AG
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