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Method and equipment for extracting helium from natural gas through membrane process

A natural gas and membrane technology, applied in separation methods, chemical instruments and methods, gas fuels, etc., can solve the problems of high cost and high energy consumption of the natural gas helium extraction process, and meet the requirements of reducing energy consumption and reducing ambient temperature. Effect

Active Publication Date: 2020-11-24
ИНК, УИНН НИКОЛАС ПИ.
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  • Application Information

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Problems solved by technology

Therefore, compared with the non-cryogenic helium extraction process, the low-temperature condensation method is a high energy-consuming process for extracting helium, which makes the cost of the natural gas helium extraction process higher

Method used

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  • Method and equipment for extracting helium from natural gas through membrane process
  • Method and equipment for extracting helium from natural gas through membrane process
  • Method and equipment for extracting helium from natural gas through membrane process

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Embodiment Construction

[0046] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0047] Wherein, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right" ", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "Radial", "Circumferential ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that th...

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Abstract

The invention relates to a method for extracting helium from natural gas through a membrane process. The method is used for extracting helium in natural gas and comprises the following steps: carryingout dehydrogenation pretreatment on feed gas by using a first dehydrogenator to obtain first gas; enabling the first gas to sequentially pass through multiple stages of permeable membranes, and sequentially performing helium separation on the first gas by using the multiple stages of permeable membranes to obtain crude helium; conveying the crude helium gas to a second dehydrogenator, and carrying out dehydrogenation post-treatment on the crude helium gas by using the second dehydrogenator to obtain second gas; and purifying the second gas to obtain helium. According to the method for extracting helium from natural gas through the membrane process, the permeable membranes are adopted, partial pressure differences of gas on the two sides of the permeable membranes function as driving force, and the purpose of gas separation is achieved through transfer rate differences, generated through the steps of dissolution, diffusion, analysis and the like, of components. Compared with a mode ofextracting helium by adopting a low-temperature condensation method in related technologies, the method provided by the invention does not need a low-temperature environment and can be carried out atnormal temperature, and therefore, energy consumption is effectively reduced.

Description

technical field [0001] The disclosure relates to the technical field of natural gas processing, in particular to a method and equipment for extracting helium from natural gas by membrane method. Background technique [0002] At present, the process used to extract helium from natural gas is generally low-temperature condensation method. The process generally includes gas source pretreatment and purification, crude helium extraction and helium refining, etc. Among them, when the low-temperature condensation method is used for the extraction of helium, the nitrogen cycle refrigeration technology is generally used to meet the refrigeration temperature required in the helium extraction process. For the front-end raw material gas precooling scheme, according to the specific raw material gas quality conditions, expansion refrigeration, external refrigeration and expansion refrigeration + external refrigeration are adopted. Therefore, compared with the non-cryogenic helium extrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/22C10L3/10C01B23/00
CPCB01D53/22B01D2053/221C01B23/0042C10L3/101
Inventor 理查德·贝克汉斯·维吉曼黄宇黄健宋慧廉波陈根生
Owner ИНК, УИНН НИКОЛАС ПИ.
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