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A natural gas condensate recovery device and method using mixed light hydrocarbon as refrigerant

A recovery method and technology of natural gas, applied in refrigeration and liquefaction, liquefaction, solidification, etc., can solve problems such as high cost and complicated process flow, and achieve the effect of simplifying process flow and equipment and reducing costs

Active Publication Date: 2011-12-21
XIAN CHANGQING TECH ENG
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Problems solved by technology

[0002] At present, refrigerants are generally used in the shallow cooling process of natural gas condensate recovery. Refrigerants generally use Freon, ammonia or propane, etc., and the refrigeration temperature is around -25~-35°C. An independent refrigeration unit needs to be configured, and the process is relatively complicated and costly. higher

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  • A natural gas condensate recovery device and method using mixed light hydrocarbon as refrigerant
  • A natural gas condensate recovery device and method using mixed light hydrocarbon as refrigerant

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Embodiment Construction

[0016] A natural gas condensate recovery device that mixes light hydrocarbons as a refrigerant, at least including: a compressor 14, a first cooler 15, a three-phase separator 16, a molecular sieve dehydrator 17, a cold box 18, a low temperature separator 19 and a condensate stabilizer In the tower 20, the input end of the compressor 14 is connected to the raw material gas 1 pipeline rich in liquefied gas components, the pressurized output end of the compressor 14 is connected to the high-temperature end pipe fitting of the first cooler 15, and the low-temperature output end of the first cooler 15 Connected to the input end of the three-phase separator 16, the three-phase separator 16 is divided into three outputs, the oily sewage 3 input end is connected to the sewage system pipeline, and the three-phase separator gas 2 output end of the three-phase separator 16 is connected to the molecular sieve dehydration 17 The input end is connected to the pipeline, and the unstabilized ...

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Abstract

The invention relates to a natural-gas condensed-liquid recovery method using mixed light hydrocarbon as a refrigerant, which comprises the following steps of: 1) separating low-temperature mixed light hydrocarbon from raw-material gas which is rich in liquefied-gas components; and 2) using one part of the separated low-temperature mixed light hydrocarbon as the refrigerant to enter a system for circulation, enabling the other part of the separated low-temperature mixed light hydrocarbon to enter a condensed-liquid stabilizing tower for stabilization, and using condensed liquid at the tower bottom of the condensed-liquid stabilizing tower as a product to exit from a device for recovery after being stabilized. Because the mixed light hydrocarbon which is condensed in the natural-gas condensed-liquid recovery process is adopted as the refrigerant to cool natural gas and recover the condensed liquid in the natural gas, a refrigerating set does not need to be independently configured, thereby the process flow and equipment are greatly simplified, and the cost is lowered; and the method is particularly applicable to small skid-mounted type natural-gas condensed-liquid recovery devices.

Description

technical field [0001] The invention belongs to the recovery process of natural gas condensate, specifically adopts mixed light hydrocarbons condensed in the recovery process of natural gas condensate as a refrigerant to cool natural gas, and recovers the condensate, that is, a natural gas condensate in which mixed light hydrocarbons are used as a refrigerant Recovery device and method. Background technique [0002] At present, refrigerants are generally used in the shallow cooling process of natural gas condensate recovery. Refrigerants generally use Freon, ammonia or propane, etc., and the refrigeration temperature is around -25~-35°C. An independent refrigeration unit needs to be configured, and the process is relatively complicated and costly. higher. Contents of the invention [0003] The purpose of the present invention is to use the mixed light hydrocarbons condensed in the natural gas condensate recovery process as refrigerant to cool natural gas, and recover the ...

Claims

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Application Information

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IPC IPC(8): F25J3/00F25J5/00
CPCF25J3/0209F25J3/0233F25J3/0247F25J2200/02F25J2200/70F25J2270/02F25J2270/08F25J2270/88
Inventor 徐伟夏政白俊生呼延念超冯凯生王曰燕赵玉君郄海霞
Owner XIAN CHANGQING TECH ENG
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