A carbon dioxide stratum sealing and storing method and system

A technology of carbon dioxide and formation, applied in the direction of chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of economy, safety, applicability, and restrictions on commercialization and industrial application of technology, so as to improve storage efficiency , improve security and economy, and improve storage efficiency

Pending Publication Date: 2020-06-16
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0005] However, the above-mentioned carbon dioxide gas storage technology has some shortcomings in terms of economy, safety, applicability, etc., which seriously restricts the commercialization and industrial application of this technology.

Method used

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  • A carbon dioxide stratum sealing and storing method and system

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] The invention discloses a carbon dioxide formation storage method, which comprises the following steps:

[0033] (1) Pre-cool and pressurize after collecting the carbon dioxide gas;

[0034] (2) Transporting the treated carbon dioxide and hydration agent in step (1) to a closed space with set pressure and temperature to react to generate carbon dioxide hydrate;

[0035] (3) Transport carbon dioxide hydrate to the coal / oil gas goaf for formation storage in the form of hydrate.

[0036] In the step (1) of the embodiment of the present invention, the carbon dioxide gas is collected and then p...

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Abstract

The invention discloses a carbon dioxide stratum sealing and storing method and system. The method comprises collecting carbon dioxide, and performing pre-cooling and pressurizing treatment; conveyingthe treated carbon dioxide and a hydration agent into a closed space with set pressure and temperature, and reacting to generate a carbon dioxide hydrate; and conveying the carbon dioxide hydrate toa coal/oil gas goaf for stratum sealing in a hydrate form. The system comprises a gas pretreatment unit, a hydration reaction unit and a hydrate sealing and storage unit corresponding to the method, wherein the gas pretreatment unit, the hydration reaction unit and the hydrate sealing and storage unit are sequentially connected through pipelines. The carbon dioxide gas storage efficiency is high,storage and transportation are convenient, the carbon dioxide gas storage process is high in safety and economical efficiency, carbon dioxide gas storage is achieved stratum formation pressure, and the carbon dioxide sealing and storage efficiency is further improved.

Description

technical field [0001] The invention belongs to the technical field of greenhouse gas emission reduction, and in particular relates to a carbon dioxide stratum sequestration method and system based on a gas hydrate method. Background technique [0002] As an important greenhouse gas, carbon dioxide is the main factor leading to global warming. With the rapid development of social economy, the carbon dioxide emissions from industrial production and human activities are increasing day by day, and the trend of increasing greenhouse effect is seriously threatening the climate balance and ecological environment. How to effectively control and reduce the emission of carbon dioxide, a greenhouse gas, has become a serious problem faced by all countries in the world. The capture and storage of carbon dioxide refers to the collection of emitted carbon dioxide and storage in an appropriate place, thereby avoiding the direct emission of carbon dioxide gas to the atmosphere. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/55E21F17/16
CPCC01B32/55E21F17/16
Inventor 张学民张梦军李银辉王佳贤李金平王英梅王春龙
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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