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Method for separating gaseous mixtures containing hydrocarbons

A technology for gaseous mixtures and mixtures, which is applied in the low-temperature separation of gas components, and in the field of processing associated gas or natural gas, which can solve unfavorable problems and achieve a high degree of extraction and ensure efficiency.

Active Publication Date: 2019-07-19
安革工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The known method is disadvantageous in that if it is used to extract carbon dioxide gas (СО 2 ), the stream rich in components heavier than methane still includes dissolved in CO 2 bulky hydrocarbons in

Method used

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  • Method for separating gaseous mixtures containing hydrocarbons
  • Method for separating gaseous mixtures containing hydrocarbons
  • Method for separating gaseous mixtures containing hydrocarbons

Examples

Experimental program
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Embodiment Construction

[0068] This method can be implemented as follows.

[0069]The initial gaseous mixture (101) (eg natural gas) is compressed by the first compressor (1) and dehydrated in the dehydration unit (2). The resulting mixture (102) is then cooled successively in the first heat exchanger (3), the cooler (4) and the second heat exchanger (5). The resulting stream (103) having a temperature below -40°C, preferably about -49°C, passes through the valve (6) and is expanded so as to obtain a temperature of about -62°C. The cooled stream (104) is fed to the first rectification column (7), where a first stream (105) rich in hydrocarbons and comprising dissolved CO 2 A second stream (106) of hydrocarbons in . To additionally heat the lower part of the column, a part of the liquid fraction (120) is pumped out of the column using a pump, through heat exchangers (3) and (5), and the resulting heated stream (121 ) is returned to the first rectification column (7).

[0070] After passing through...

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PUM

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Abstract

The present invention relates to techniques for processing hydrocarbon-containing gaseous mixtures, and in particular to the cryogenic separation of gas components, and may be used in the processing of oil well gas or natural gas. Technical results include reduced loss of target components and increased process efficiency.

Description

technical field [0001] The invention relates to methods for treating gaseous mixtures containing hydrocarbons, in particular to the cryogenic separation of gas components, and can be used to treat co-product gases or natural gas. The present invention is particularly helpful in solving problems related to extraction of acid gas (СО) from natural gas 2 and N 2 S) Related tasks. Background technique [0002] Methods for separating a hydrocarbon-containing gaseous mixture are known in the art and include: cooling the mixture, expanding the mixture or a portion of the mixture, partially condensing the mixture during expansion, separating the mixture in a rectification column Or a part of the mixture, for the purpose of producing products in liquid and gas phases. The treatment (process) of the expanded mixture is carried out by passing the mixture through nozzle channels in which the mixture stream is swirled (swirled) and / or at the nozzle channel inlet and which At the chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/02
CPCF25J3/0209F25J3/0233F25J3/0242F25J3/0266F25J2205/10F25J2200/94F25J2200/76F25J2200/78F25J2210/04F25J2200/74F25J2200/40F25J2200/04F25J2270/90F25J2245/02F25J2240/40F25J2250/30F25J2230/30Y02C20/40
Inventor 列夫·阿尔卡季耶维奇·巴吉罗夫列昂纳德·马卡罗维奇·德米特里耶夫弗拉基米尔·伊萨科维奇·费金萨拉瓦特·扎伊内特季诺维奇·伊马耶夫
Owner 安革工程有限公司
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