Recovery device and recovery method for methane gas in hydrate reactor

A recovery device and technology for methane gas, applied in the field of natural gas hydrate exploitation, can solve problems such as environmental pollution, and achieve the effect of avoiding environmental pollution

Active Publication Date: 2021-05-25
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the volume range of the natural gas hydrate 3D simulation mining reactor is 0-500L, and the pressure range is 0-25MPa. If the gas generated by decomposition is directly discharged into the atmosphere, it will pollute the environment.

Method used

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  • Recovery device and recovery method for methane gas in hydrate reactor

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Embodiment Construction

[0024] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.

[0025] Such as figure 1 As shown, the present invention provides a recovery device for methane gas in a hydrate reactor, including a hydrate reactor 1 and a low-pressure gas storage tank group 2, and the hydrate reactor 1 and the low-pressure gas storage tank group 2 are connected in series through a communication pipeline ; A first valve (V01), a second valve (V02) and a third valve (V03) are arranged between the hydrate reactor 1 and the low-pressure gas storage tank group 2, and the first valve (V01) and the second valve (V02 ) is connecte...

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Abstract

The invention relates to a recovery device and a recovery method for methane gas in a hydrate reactor. The recovery device comprises the hydrate reactor and a low-pressure gas storage tank group. The hydrate reactor and the low-pressure gas storage tank group are connected in series through a communicating pipeline. A first valve, a second valve and a third valve are arranged between the hydrate reactor and the low-pressure gas storage tank group, and the first valve and the second valve are connected in parallel and then are connected in series with the third valve. An input end of the first valve is connected with an output end of the hydrate reactor, and an output end of the second valve is communicated with air. The low-pressure gas storage tank group comprises a plurality of low-pressure gas storage tanks which are sequentially connected in series through the communicating pipeline, and one valve is arranged between every two adjacent low-pressure gas storage tanks. According to the recovery device and the recovery method for the methane gas in the hydrate reactor, methane gas recovery can be realized, environmental pollution is avoided, and preparation can be made for next hydrate generation.

Description

technical field [0001] The invention relates to the technical field of natural gas hydrate exploitation, in particular to a recovery device and recovery method for methane gas in a hydrate reactor. Background technique [0002] Natural gas hydrate is an ice-like clathrate crystal compound composed of water and natural gas under certain conditions (suitable pressure, temperature, gas saturation, water salinity and pH value, etc.), which can burn when exposed to fire, commonly known as "Combustible ice", most of the hydrates that exist in nature are methane hydrates. Generally speaking, the methane obtained from the decomposition of hydrates is more than 160 times the volume of hydrates, and the total amount of natural gas in solid form is twice that of fossil fuels such as coal and oil on the earth. The most important strategic resource. In addition, methane contains less carbon than coal or petroleum, and the carbon dioxide produced by methane is only half that of coal, ma...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): E21B43/01E21B43/00E21B43/12E21B41/00
CPCE21B43/123E21B43/01E21B43/006E21B41/00
Inventor李清平李刚李小森喻西崇李焱秦蕊吕秋楠王屹朱军龙
OwnerCHINA NAT OFFSHORE OIL CORP