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A Condensation Method for Oil and Gas Recovery

A recovery method and oil recovery technology, applied in the fields of energy utilization and environmental safety, can solve the problems of insignificant investment benefit, large power consumption, expensive low-temperature compressor, etc., and achieve the effect of simple structure, long life and improving COP.

Active Publication Date: 2011-11-30
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is: if the condensing temperature is too low, the power consumption is too large, the low-temperature compressor is expensive, and the return on investment is not significant

Method used

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  • A Condensation Method for Oil and Gas Recovery
  • A Condensation Method for Oil and Gas Recovery
  • A Condensation Method for Oil and Gas Recovery

Examples

Experimental program
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Effect test

Embodiment

[0048] Example: The oil-gas mixture of an oil and gas company as described in Table 1, which is characterized as an oxygen-free mixture with methane as the main component, and the purpose is to remove and recycle non-methane hydrocarbons in oil and gas.

[0049] Using ordinary condensation methods, when the cryogenic temperature is -81°C, the condensation recovery efficiency is less than 75%, which is far below the "Gas Station Air Pollutant Emission Standards" issued by the State Environmental Protection Administration and the General Administration of Quality Supervision, Inspection and Quarantine of my country. To meet the requirement of 95% recovery of non-methane hydrocarbon oil and gas, it is found through calculation that the cryogenic temperature should reach about -113°C. When the temperature is cooled to -80°C and further cryogenic cooling is required, liquid nitrogen is used for further cooling in engineering.

[0050] Table 1 Composition and concentration of oil-ga...

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Abstract

The invention discloses a condensation method for recovering oil and gas, and belongs to the technical fields of energy utilization, environmental safety, environmental protection and the like. The invention adopts the oil gas recovery method of multi-stage condensation, inter-stage pressurization and low-temperature tail gas cooling recovery to realize the recovery of volatile oil gas. The method has high recovery efficiency and effectively saves energy; the system used is low in cost, simple in structure, long in life and easy to operate, and can be applied to volatile oil and gas with low carbon content such as crude oil and gasoline in gas stations, oil depots and oil fields. recycling.

Description

technical field [0001] The invention relates to a method for recovering volatile oil, which can be applied to the recovery of volatile oil and gas with low carbon content such as crude oil and gasoline in gas stations, oil depots and oil fields, etc., and belongs to technologies such as energy utilization and environmental safety field. Background technique [0002] VOCs with low carbon content present in crude oil and gasoline are highly volatile. The evaporation loss of oil products is a waste of energy, and directly discharging them into the atmosphere will endanger the health of the surrounding staff and nearby residents, and it will easily form photochemical smog if it diffuses into the air for a long time. Since the oil-gas mixture has exceeded the lower explosion limit, it may pose an explosive threat to the surrounding environment, which is not conducive to environmental protection. Therefore, the recovery of volatile oil vapor is a necessary link no matter in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J1/02
Inventor 李俊明李成李红旗
Owner TSINGHUA UNIV
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