Apparatus and extraction equipment for oil collection from liquid carbon dioxide in which oil is dissolved

A liquid carbon dioxide and oil technology, which is applied in the field of supercritical carbon dioxide extraction equipment and oil collection devices, can solve the problems of inaccurate research results and difficult research

Active Publication Date: 2019-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] These COs 2 The supercritical extractor has the following disadvantages: there is n-hexane used to absorb oil components in the collector, but in fact there are still many oil components that are not absorbed by n-hexane
This leads to very inaccurate follow-up research results, and it is even difficult to conduct follow-up research

Method used

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  • Apparatus and extraction equipment for oil collection from liquid carbon dioxide in which oil is dissolved
  • Apparatus and extraction equipment for oil collection from liquid carbon dioxide in which oil is dissolved

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] figure 1 A device 10 for collecting oil from carbon dioxide in which oil is dissolved is schematically shown (hereinafter referred to as device 10 ) according to the present invention. In one embodiment, the carbon dioxide mentioned here is generally liquid carbon dioxide in which oil is dissolved in source rocks or reservoir rocks after supercritical extraction of carbon dioxide. Of course, carbon dioxide can also be carbon dioxide in other states. The apparatus 10 of the present invention may be used in a carbon dioxide supercritical extraction plant (not shown) to collect substances dissolved in supercritical carbon dioxide.

[0027] Such as figure 1 As shown, the device 10 includes a first collection assembly 11 and a second collection assembly 12 disposed downstream of the first collection assembly 11 . The first collection component 11 and the second collec...

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Abstract

The invention relates to a device for collecting an oil component from liquid carbon dioxide containing the oil component and extraction equipment using the same. The device comprises a first collection assembly which is used for primary collection of an oil component in carbon dioxide containing the oil component, and a second collection assembly which is arranged in the downstream of the first collection assembly, is communicated with the first collection assembly and is used for refined collection of an oil component in gas collected by the first collection assembly. The first collection assembly collects a C5-C9 oil component and a C10 or more C oil component. The second collection assembly collects a C1-C4 oil component and a trace amount of a C5-C9 oil component. The device can completely collect an oil component dissolved in carbon dioxide so that accuracy of carbon dioxide supercritical extraction and analysis of a rock sample is greatly improved.

Description

technical field [0001] The invention relates to the fields of oil and natural gas development, in particular to supercritical carbon dioxide (CO 2 ) extraction equipment. The invention also relates to means for collecting oil from carbon dioxide in which oil is dissolved, for use in such an extraction plant. Background technique [0002] When the temperature exceeds 31°C and the pressure exceeds 7.382MPa, CO 2 in a supercritical state. Supercritical CO 2 It has a strong ability to dissolve organic substances, so CO in a supercritical state 2 It is widely used in the field of extraction of organic components, such as extraction of vegetable oil, extraction of high molecular polymers, etc. [0003] In the field of oil exploration, CO in a supercritical state can be used 2 Extract oil components in shale source rocks and reservoir rocks. Thus, molecular marker compound analysis, oil source comparison, source rock evaluation, reservoir oiliness evaluation, etc. are carrie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 朱东亚宁丽荣孟庆强刘全有张殿伟孙冬胜周雁陈伟钧
Owner CHINA PETROLEUM & CHEM CORP
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