Integrated oil and gas recovery system and recovery process

Abstract

The invention belongs to the technical field of oil and gas recovery, and discloses an integrated oil and gas recovery system and a recovery process. The integrated oil and gas recovery system comprises a pressure buffer tank, a tail gas compression and preliminary condensation device, a lean oil cooling and absorbing device, an absorption device and a recovery device, wherein the original oil andgas are conveyed into the pressure buffer tank, and then sent to the tail gas compression and preliminary condensation device; after being subjected to compression and condensation, the oil and gas enter an absorption tower of the lean oil cooling and absorbing device; gasoline No.93 enters the absorption tower after being precooled by means of an absorbent oil precooler and subjected to deep cooling of an absorbent oil deep freezer; after being subjected to low-temperature spraying of the absorption tower, the oil and gas is conveyed to an oil collecting tank, and the remaining tail gas enters the absorption device for absorbing; the absorbed tail gas is discharged to the atmosphere, and the absorbed hydrocarbon components are recovered to the pressure buffer tank by means of vacuum thermal analysis. The system and the process integrate compression, condensing absorption and absorbing, can enable emissions to reach the standards, have multiple safeguards, can remarkably improve the oil and gas recovery effect, and greatly reduce equipment size and equipment investment.

Description

technical field [0001] The invention belongs to the technical field of oil and gas recovery, and in particular relates to an integrated oil and gas recovery system and recovery method integrating compression, condensation absorption and adsorption. Background technique [0002] Oil and gas recovery has very important significance: First, oil and gas recovery is conducive to saving resources. Petroleum is a non-renewable resource and will be exhausted after use; second, oil and gas recovery can reduce environmental pollution. , oil tanks or car fuel tanks will generate a large amount of oil and gas due to pressure fluctuations, and cause a large amount of oil and gas emissions. The main components of oil and gas are butane, pentane, benzene, xylene, ethylbenzene, etc., most of which are carcinogens. At present, there are roughly six types of methods for the treatment of volatile oil and gas at home and abroad: condensation method, absorption method, adsorption method, membra...

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Problems solved by technology

[0008] In view of the technical problems of the existing oil and gas recovery process that the concentration of the tail gas after treatment is too high or the concentration of the raw oil and gas feed is too low, the present invention provides an integrated oil and gas recovery system and recovery method that integrates compression, condensation absorption, and adsorption, which can It has multiple guarantees to meet emission standards. For large-scale projects, it can significantly improve the oil and gas recovery effect, greatly reduce equipment size and reduce equipment investment.

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