Gas hydrate generating, sampling and analyzing method and apparatus

A gas hydrate and hydrate generation technology, applied in sampling devices, measuring devices, analysis materials, etc., can solve the problems of gas component sampling and analysis, sampling and analysis difficulties, etc.
CN101477086BActive Publication Date: 2011-09-21GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
Publication Date
2011-09-21

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Abstract

The invention discloses a device and a method for generating, sampling and analyzing gas hydrates. The device comprises a gas supply module, a liquid supply module, a gas hydrate generation module, a sampling module, a temperature control module, a data acquiring and processing module and a gas chromatograph. The method comprises the steps of acquiring gas components in a gas phase, a liquid phase and a hydrate phase in a phase equilibrium point of a multicomponent mixed gas hydrate, the generation process of the multicomponent mixed gas hydrate and hydrate-method separation gas respectively through the device, analyzing the components in gas chromatography and obtaining the component-distribution situation of multicomponent mixed gas in each phase, as well as the recovery rate and separation factor of the hydrate-method separation gas. The invention solves the study on the determination of each component of mixed gas in each phase state in the generation experiment of the multicomponent mixed gas hydrate, can accurately sample, does not affect other conditions or change the component distribution of the other phase states, ensures true accurate analysis results, and applies to the study on the generation of the multicomponent mixed gas hydrate and gas separation-purification experiment. The method and the device have the advantages of simplicity, convenient operation and low cost.
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Description

technical field

[0001] The invention relates to a method and device for gas hydrate formation, sampling and analysis, in particular to an analysis method and device for component determination in multi-component mixed gas hydrate formation. Background technique

[0002] Gas hydrate, also known as clathrate hydrate, consists of many low-molecular-weight gas molecules, such as hydrocarbons, carbon dioxide, etc., surrounded by water molecules, and forms an ice-like crystal structure near the high-pressure freezing point. The hydrates discovered so far are mainly divided into three structures: SI hydrate with a body-centered cubic structure, SII hydrate with a face-centered cubic structure, and SH hydrate with a hexagonal structure.

[0003] The type of hydrate formed by gas molecules is related to the van der Waals radius of the molecule. The molecular size that the hydrate can accommodate is: SI is less than 0.52nm, SII is 0.52-0.69nm, and SH is 0.75-0.9nm. With the continuou...

Claims

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