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Light hydrocarbon extraction system and method

An extraction system and technology for light hydrocarbons, which are used in the treatment of hydrocarbon oil, recovery of liquid hydrocarbon mixtures, petroleum industry, etc., to achieve the effects of low energy consumption, simple process and high extraction rate

Pending Publication Date: 2021-02-02
中集安瑞科能源装备(苏州)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a light hydrocarbon extraction system and extraction method with a higher extraction rate of light hydrocarbons and lower energy consumption, so as to solve the problems in the prior art

Method used

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  • Light hydrocarbon extraction system and method
  • Light hydrocarbon extraction system and method
  • Light hydrocarbon extraction system and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0048] refer to figure 1 The light hydrocarbon extraction system 1 of this embodiment includes a dehydration device 11 , a precooling device 12 , a light hydrocarbon separation device 13 , a first heat exchange device 14 , a dry gas compression device 16 and a throttling device 17 .

[0049] The dehydration device 11 is used to dehydrate the raw material gas, avoiding water condensing in the pipeline and causing pipeline plug flow, avoiding the formation of solid compounds between moisture and other components in the raw material gas, causing blockage of valves and equipment, etc., and avoiding water and CO 2 、H 2 The combined action of S causes corrosion, which ensures the normal operation of the light hydrocarbon extraction system 1 .

[0050] Specifically, the dehydration device 11 has an inlet port and an outlet port, the inlet port is used to connect the raw gas source to receive the raw gas, and the outlet port is used to connect with the precooling device 12 to deliver...

no. 2 example

[0078] refer to figure 2 The difference between the light hydrocarbon extraction system 2 of this embodiment and the first embodiment is that: the light hydrocarbon extraction system 2 of this embodiment further includes a second heat exchange device 25 .

[0079] The second heat exchange device 25 has a second cold source passage and a second medium passage capable of heat exchange, that is, the cold source in the second cold source passage exchanges heat with the medium in the second medium passage, so that the second cold source A heat sink in the source channel cools the medium in the second medium channel.

[0080] The inlet end of the second cold source channel is connected to the outlet end of the first cold source channel, and the outlet end of the second cold source channel is connected to the inlet end of the dry gas compression device 26, so that the outlet end of the first cold source channel is connected to the dry gas compressor. The inlet port of the device 26...

no. 3 example

[0098] refer to image 3 The difference between the light hydrocarbon extraction system 3 of this embodiment and the second embodiment is that the light hydrocarbon separation device 33 includes a deethanizer 331 and a separator 332 .

[0099] Separator 332 has an inlet port, a gas phase outlet port, and a liquid phase outlet port.

[0100] The inlet end of the separator 332 is connected to the outlet end of the throttling device 37 to receive the liquid phase material throttled and cooled by the throttling device 37 , that is, to receive cooling capacity.

[0101] The liquid phase outlet of the separator 332 is connected to the recovery inlet of the deethanizer 331 , and the liquid phase material separated by the separator 332 is sent to the deethanizer 331 to provide cooling capacity for the deethanizer 331 .

[0102] The gas phase outlet port of the separator 332 is connected to the inlet port of the first cold source channel, so as to provide the gas phase material separa...

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Abstract

The invention provides a light hydrocarbon extraction system and method. The light hydrocarbon extraction system comprises a dehydration device, a pre-cooling device, a light hydrocarbon separation device, a dry gas compression device, a first heat exchange device and a throttling device. The first heat exchange device is provided with a first cold source channel and a first medium channel which can conduct heat exchange. A feed gas inlet end of the light hydrocarbon separation device is connected with an outlet end of the pre-cooling device, a liquid phase outlet end outputs light hydrocarbon, and a gas phase outlet end outputs a gas phase substance. An inlet end of the first cold source channel is connected with the gas phase outlet end to receive the gas phase substance. An outlet end of the first cold source channel is communicated with an inlet end of the dry gas compression device, an outlet end of the dry gas compression device is connected with an inlet end of the first mediumchannel, and the dry gas compression device pressurizes the gas phase substance to form CNG. An inlet end of the throttling device is connected with an outlet end of the first medium channel, and an outlet end of the throttling device is connected with a recycling inlet end of the light hydrocarbon separation device, so that the CNG is throttled and cooled to provide cooling capacity for the lighthydrocarbon separation device.

Description

technical field [0001] The invention relates to the technical field of natural gas processing, in particular to a light hydrocarbon extraction system and extraction method. Background technique [0002] As a valuable resource, natural gas is widely used in people's life and industry. In addition to methane, natural gas also contains ethane, propane, butane, etc. Light hydrocarbons are a general term for liquid hydrocarbon mixtures extracted from natural gas through cold separation and other methods, and their main components are propane and heavier hydrocarbons. Light hydrocarbons have great economic value and can be directly used as fuel or further separated into ethane, propane, butane, or a mixture of propane and butane, light oil, etc., and can also be used as chemical raw materials. [0003] At present, the following three methods are generally used to extract light hydrocarbons from natural gas: 1. Adding a cold source to refrigerate. When light hydrocarbons are extr...

Claims

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Application Information

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IPC IPC(8): C10G5/06
CPCC10G5/06C10G2300/1025
Inventor 赵德泉陈丽艳陆佳高卫刘汉鹏
Owner 中集安瑞科能源装备(苏州)有限公司
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