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Integrated double-tower ethane recovery device and recovery process

A recovery device and double-column ethane technology are applied in the field of integrated double-column ethane recovery device and recovery process, which can solve the problems of large number of equipment and complex process.

Pending Publication Date: 2020-10-30
四川科比科油气工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of large number of equipments and complicated processes for recovering ethane in the prior art

Method used

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  • Integrated double-tower ethane recovery device and recovery process

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the present invention is an integrated double-tower ethane recovery device, which includes a stripping integrated tower 1 and a rectifying integrated tower 2. The stripping integrated tower 1 is provided with a first integrated raw material gas precooling heat exchange winding. Pipe 63, the upper end of the rectification integrated tower 2 is provided with a second integrated raw material gas precooling heat exchange coil 61, and the lower part of the second integrated raw material gas precooling heat exchange coil 61 is provided with an integrated supercooled air exchange coil The heat coil 62, the raw material gas is divided into two branches, namely the first branch and the second branch, and the first branch is arranged in sequence along the airflow output direction as the second integrated raw material gas precooling heat exchange coil 61, Raw material gas precooler 5 and separator 9, the second branch along the airflow output direction i...

Embodiment 2

[0028] Such as figure 1 As shown, the present embodiment is based on embodiment 1, the outlet of the lower part of the rectification integration tower 2 is connected to the third packing area inlet 111 through a pipeline, and the third packing area inlet 111 is located at the top of the stripping integration tower 1, so The rectification integration tower bottom pump 3 is arranged on the pipeline; the separator outlet 119 is arranged on the top of the separator 9, and the precooled feed gas at the outlet of the separator is divided into two branches, and the first branch and The expansion end of the expander 4 is connected, the outlet of the expansion end of the expander 4 is connected to the inlet 103 of the first packing area of ​​the rectification integrated tower 2, and the second branch is connected to the inlet of the integrated supercooled gas heat exchange coil 62; The outlet at the top of the rectification integrated tower 2 is connected to the pressurized end of the ...

Embodiment 3

[0030] Such as figure 1 As shown, the present embodiment is based on embodiments 1 and 2 to realize a recovery process of an integrated double-tower ethane recovery device, comprising the following steps:

[0031] S1: After the raw material gas at the outlet end 7 of the raw material gas pipe enters the device, it is divided into two parts, and a part of the raw material gas enters the second integrated raw material gas precooling coil inlet 101 through the first integrated raw material gas precooling and heat exchange coil inlet 101 at the top of the rectification integrated tower 2. The cold heat exchange coil 61 is then passed through the outlet 106 of the first integrated raw material gas precooling heat exchange coil to enter the raw material gas precooler 5 for precooling, and the other part passes through the second integrated raw material gas precooling exchange in the middle of the stripping integrated tower 1 The heat coil inlet 113 enters the first integrated raw ma...

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Abstract

The invention discloses an integrated double-tower ethane recovery device and an integrated double-tower ethane recovery process. The device comprises a stripping integrated tower and a rectificationintegrated tower; a first integrated raw material gas pre-cooling heat exchange winding pipe is arranged in the stripping integrated tower; a second integrated raw material gas pre-cooling heat exchange winding pipe is arranged at the upper end in the rectification integrated tower, an integrated supercooled gas heat exchange winding pipe is arranged at the lower part of the second integrated rawmaterial gas pre-cooling heat exchange winding pipe, and the raw material gas entering the device is divided into two branches, namely a first branch and a second branch. The device has the advantagesthat equipment deletion and combination integration are realized, and the whole process is optimized; the technological process is flexible and changeable and can be adjusted according to the marketrequirements of products; and the ethane recovery efficiency is improved, and more remarkable economic benefits are brought.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas chemical industry, in particular to an integrated double-tower ethane recovery device and a recovery process. Background technique [0002] Most domestic oil and gas fields usually only consider the recovery of propane and heavier hydrocarbon components, and do not recover ethane. Ethane is recovered from natural gas, primarily as a feedstock for ethylene production. With the successive construction and commissioning of ethylene units that use ethane as raw material for cracking, the demand for ethane will increase significantly. For oil and gas production companies, the recovery of ethane will bring more significant economic benefits. However, the traditional cryogenic recovery device adopts the "cold box" with plate-fin heat exchange core, which has complicated process, a large number of equipment, and a large area. process. Therefore, it is necessary to design an integrated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
CPCC10L3/101
Inventor 朱江陈志国陈斯刘敏罗兴
Owner 四川科比科油气工程有限公司
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