Mobile coal bed gas purifying and liquefying device

Abstract

The invention discloses a mobile coal bed gas purifying and liquefying device which comprises a particulate matter filter, a dehydrating device, a sulfur and carbon dioxide removing device, a compression and liquefaction device, a fractionating device and an gas storage tank. The gas outlet end of the particulate matter filter is connected with the gas inlet end of the dehydrating device through a pipeline, the gas outlet end of the dehydrating device is connected with the gas inlet end of the sulfur and carbon dioxide removing device through a pipeline, the gas outlet end of the sulfur and carbon dioxide removing device is connected with the gas inlet end of the compression and liquefaction device through a pipeline, the gas outlet end of the compression and liquefaction device is connected with the gas inlet end of the fractionating device through a pipeline, and the gas outlet end of the fractionating device is connected with the gas inlet end of the gas storage tank through a pipeline. According to the mobile coal bed gas purifying and liquefying device, liquefying and separating are both achieved at a low temperature, separation purity is high, safety performance is good, liquefied natural gas can be produced at the same time when separating is achieved, coal bed gas resources are effectively used, and atmospheric pollution caused by emission is avoided. The entire mobile coal bed gas purifying and liquefying device is mounted on a container, and can be moved and transported.

Description

technical field [0001] The invention relates to a coal bed gas purification and liquefaction device, in particular to a mobile coal bed gas purification and liquefaction device. [0002] Background technique [0003] Coalbed methane refers to unconventional natural gas stored in coal seams with methane as the main component. It is a kind of natural gas and is the main gas produced in the coal mining process. It coexists with coal and is also called gas. Coalbed methane is a high-quality energy and chemical raw material. In the current environment of energy shortage, it is a good supplementary energy source. According to statistics, my country's coal-bed methane discharged into the atmosphere every year accounts for one-third of the total coal-bed methane discharged from coal mining in the world, which not only causes serious air pollution, but also is a great waste of resources. [0004] my country is rich in coalbed methane resources, ranking third in the world. Over 13...

AI Technical Summary

Problems solved by technology

The catalytic deoxygenation method in this patent will consume the methane in the coalbed methane. For the coalbed methane with less methane content, the methane may be exhausted through catalytic deoxidation, and the effect of comprehensive utilization of resources cannot be achieved.

The use of physical adsorption deoxidation not only has the problem of unsatisfactory deoxidation effect, but also the catalyst needs to be continuously regenerated and activated, so there are still great safety hazards in the subsequent treatment procedures

Many of the existing mines in my country are mines with small production scales, which are not suitable for the installation and construction of large-scale coalbed methane purification and liquefaction equipment

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