Coal bed gas exploiting auxiliary filter device

Abstract

The invention discloses a coal bed gas exploiting auxiliary filter device. After primary simple filtering, a water vapor filtering mechanism is utilized for removing water vapor, then, a transfer tankis utilized for achieving transfer temporary storage treatment of coal bed gas, the pressure difference in a filter tank is conveniently guaranteed, a filter set is constructed into the manner that coal bed gas can flow into an upper filter partition cavity adjacent to a lower filter partition cavity from the lower filter partition cavity, the filter set can control the flow speed of the coal bedgas, and accordingly during filtering, a certain pressure difference can be achieved between the two upper-lower adjacent filter partition cavities through the filter set; and accordingly, when the filter cotton position is blocked, the coal bed gas can be gathered in the transfer tank, the filter cotton blockage situation can be judged according to the pressure intensity of the transfer tank, cleaning is conveniently conducted, the filter performance of the filter cotton during filtering can be guaranteed due to the basically constant pressure difference, the problem that dust penetrates through the filter cotton is solved, and the filtering capability and the filtering effect are improved.

Description

technical field [0001] The invention specifically relates to an auxiliary filter device for mining of coal-bed methane, which belongs to the field of auxiliary equipment for mining of coal-bed methane. Background technique [0002] For coalbed methane mining, when the underground coalbed methane is pumped up, there are often many impurities such as slag powder, dust, water vapor, etc. in the coalbed methane. If these impurities are not treated, in the subsequent transportation process Among them, since the transportation of coalbed methane is generally high-pressure transportation, such impurities will not only cause great damage to the transportation pipeline, but also greatly affect the quality of coalbed methane and affect its quality. Therefore, coalbed methane needs to be filtered after mining. The current filtering equipment generally uses filter screens or filter cotton to filter coalbed methane. Purpose, however, during the filtering operation of this conventional m...

AI Technical Summary

Problems solved by technology

[0002] For coalbed methane mining, when the underground coalbed methane is pumped up, there are often many impurities such as slag powder, dust, water vapor, etc. in the coalbed methane. If these impurities are not treated, in the subsequent transportation process In general, because the transportation of coalbed methane is generally high-pressure transportation, such impurities will not only cause great damage to the transportation pipeline, but also greatly affect the quality of coalbed methane and affect its quality.

Therefore, coalbed methane needs to be filtered after mining. The current filtering equipment generally uses filter screens or filter cotton to filter coalbed methane. Purpose, however, during the filtering operation of this conventional method, as the filtering proceeds, either the filter screen will be clogged, making the filtering slower and the airflow difficult to flow out smoothly. It is not a certain value, which leads to this kind of blockage and is not easy to be found

Sometimes people avoid this problem by increasing the fan or conveying pressure. However, pressurization will make the slag powder on the filter pass through the filter and reduce the filtering effect, affecting the filtering ability and quality.

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