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Device and method for compressing a low-pressure gas

A low-pressure gas and equipment technology used in the compression of biogas. It can solve problems such as high energy consumption and achieve the effect of improving gas compression.

Inactive Publication Date: 2021-01-08
前苏伊士环能集团
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Dynamic compressors are sensitive to load composition and flow changes, have limited compression ratios, and consume large amounts of energy

Method used

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  • Device and method for compressing a low-pressure gas
  • Device and method for compressing a low-pressure gas
  • Device and method for compressing a low-pressure gas

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Experimental program
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Embodiment Construction

[0044] This description is given in a non-limiting manner, in which each feature of an embodiment can be combined in an advantageous manner with any other feature of any other embodiment.

[0045] Please note that the figures are not drawn to scale.

[0046] Note that here, the term "gas" includes natural gas, biogas and synthesis gas.

[0047] Note that here, the term "fluid" refers to any fluid. Preferably, the use of incompressible viscous fluids is envisaged.

[0048] figure 1 The schematic diagram of an embodiment of the device 100 that is the subject of the invention is not shown to scale. The device 100 for compressing low-pressure gas comprises:

[0049] - at least one compression chamber 105 comprising:

[0050] - an inlet 110 for low-pressure gas,

[0051] - outlet 115 for high pressure gas

[0052] - inlet 120 for fluid,

[0053] - an outlet 125 for fluid, and

[0054] - a piston 130 located between the gas inlet and outlet on the one hand and the fluid inl...

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PUM

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Abstract

The device (100) for compressing a low-pressure gas comprises: - at least one compression chamber (105) comprising: - a low-pressure gas inlet (110); - a high-pressure gas outlet (115); - a liquid inlet (120); - a liquid outlet (125); and - a piston (130) located between the gas inlet and outlet, on the one hand, and the liquid inlet and outlet, on the other hand; - a liquid movement means (135) positioned on a liquid circuit connecting a liquid outlet and a liquid inlet of a compression chamber; and - a means (165) for measuring the pressure of the gas inside the compression chamber and a circuit (160) for recirculating the gas towards the inlet of a compression chamber when the measured pressure is below a determined limit value.

Description

technical field [0001] The present invention relates to an apparatus and method for compressing low-pressure gas. It is especially suitable for the compression of biogas. Background technique [0002] Gathering available low-pressure gas to compress it to high pressure presents technical and economic difficulties. Various compressor techniques exist to perform this compression. These various techniques are very energy-intensive. [0003] In order to obtain the desired compression ratio, the compressor may comprise multiple compression stages with intercooling, which further complicates the approach. [0004] The compressors can be of different types and their configuration can be selected from: [0005] - Positive displacement compressors (reciprocating or screw compressors), which can provide intermittent power flow. In these techniques, gas is compressed to a small volume, thereby increasing the pressure. [0006] - Dynamic compressors (centrifugal or axial compresso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B31/00F04B35/00
CPCF04B31/00F04B35/00F04B49/24F04B51/00
Inventor H·古达查
Owner 前苏伊士环能集团