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Expansion cryogenic oil-gas recovery method

A recovery method, oil and gas technology, applied in the direction of separation methods, chemical instruments and methods, mechanical equipment, etc., can solve the problems of increasing the cost of recovery equipment, pressure waste, etc., achieve high reliability, reduce energy consumption, and enhance economic benefits.

Inactive Publication Date: 2017-12-29
JIANGSU AEROSPACE HEWLETT ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an expansion cryogenic oil gas recovery method, which has the advantages of reducing energy consumption in the process of oil gas recovery, and solves the problem that the waste of pressure generated during oil gas recovery will increase the cost of recovery equipment

Method used

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  • Expansion cryogenic oil-gas recovery method

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Embodiment 1

[0025] An expansion cryogenic oil and gas recovery method, an expansion cryogenic oil and gas recovery method, including a molecular dehydration unit, an expansion power generation unit, a heat exchange unit and an activated carbon deoiling unit;

[0026] Molecular dehydration unit: use a molecular sieve dehydration device, the dehydration depth of the molecular sieve dehydration device can reach 5ppm, and the operation of the molecular sieve dehydration device is controlled by the central control. The molecular sieve dehydration device includes the first molecular sieve dehydration tower 1, the second molecular sieve dehydration tower 2 and the third molecular sieve Dehydration tower 3, first molecular sieve dehydration tower 1 adsorption, second molecular sieve dehydration tower 2 desorption, third molecular sieve dehydration tower 3 standby, first molecular sieve dehydration tower 1, second molecular sieve dehydration tower 2 and third molecular sieve dehydration tower 3 The...

Embodiment 2

[0032] An expansion cryogenic oil and gas recovery method, an expansion cryogenic oil and gas recovery method, including a molecular dehydration unit, an expansion power generation unit, a heat exchange unit and an activated carbon deoiling unit;

[0033] Molecular dehydration unit: use a molecular sieve dehydration device, the dehydration depth of the molecular sieve dehydration device can reach 5ppm, and the operation of the molecular sieve dehydration device is controlled by the central control. The molecular sieve dehydration device includes the first molecular sieve dehydration tower 1, the second molecular sieve dehydration tower 2 and the third molecular sieve Dehydration tower 3, first molecular sieve dehydration tower 1 adsorption, second molecular sieve dehydration tower 2 desorption, third molecular sieve dehydration tower 3 standby, first molecular sieve dehydration tower 1, second molecular sieve dehydration tower 2 and third molecular sieve dehydration tower 3 The...

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Abstract

The invention discloses an expansion cryogenic oil-gas recovery method. A molecular dehydration unit, an expansion power generation unit, a heat exchange unit and an activated carbon deoiling unit are adopted. In the molecular dehydration unit, high-and medium-pressure tail gas enters a first molecular sieve dehydration tower through a manifold and flowers from bottom to top to enter a cold box. After regeneration in a second molecular sieve dehydration tower, gas subjected to heat exchange in the cold box is separated into two flows, an expander is coupled with a power generator to realize power output, and the gas is partially adopted for flow operation flexibility of the expander. In the heat exchange unit, cold tail gas subjected to oil-gas separation is separated into two heat exchange flows for cooling salt solution. In the activated carbon deoiling unit, the gas getting out of the heat exchange unit flows from bottom to top to enter a first activated carbon adsorption device to realize regeneration of activated carbon, and the gas enters from a bypass at the top of a second activated carbon adsorption device. The expansion cryogenic oil-gas recovery method has the advantage of reduction of utilization energy consumption in an oil-gas recovery process, and the problem of cost increase of recovery equipment due to wasting of pressure generated in oil-gas recovery.

Description

technical field [0001] The invention relates to the technical field of oil gas recovery, in particular to an expansion cryogenic oil gas recovery method. Background technique [0002] Oil and gas recovery and treatment methods mainly include adsorption, absorption, condensation and membrane treatment. These methods have disadvantages such as low oil and gas recovery efficiency, high oil and gas emission concentration, high energy consumption, short service life, high investment cost and poor safety performance. [0003] At present, the most commonly used method of oil and gas recovery is condensation + adsorption integration. First, the oil and gas are condensed to a certain extent, and most of the hydrocarbons in the oil and gas are liquefied, and then activated carbon or resin is used for deep adsorption. The condensation + adsorption integration process has high oil and gas recovery efficiency. , can achieve exhaust emission standards. [0004] However, the current meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D53/26B01D53/00F01D15/10
CPCB01D53/002B01D53/02B01D53/261F01D15/10
Inventor 朱忠泉
Owner JIANGSU AEROSPACE HEWLETT ENVIRONMENTAL PROTECTION TECH