Pulverized coal filtering and collecting device for coalbed methane exploitation

Abstract

The invention discloses a pulverized coal filtering and collecting device for coalbed methane exploitation. According to the invention, pulverized coal in coalbed methane is filtered and collected through a filter bag; in the collecting process, the pulverized coal on the filter bag is prevented from blocking the ventilation and filtration of the filter bag; by arranging an oscillating assembly, coalbed methane filtering effect and passing performance can be guaranteed, and the coalbed methane is guaranteed to smoothly pass through the filter bag and is prevented from being blocked by the pulverized coal; and the oscillation amplitude of the oscillating assembly can be adjusted, so the oscillation amplitude can be adjusted according to the influence of the pulverized coal on the passing smoothness of the coalbed methane in the filter bag, the filtering effect of the pulverized coal is improved, the pulverized coal on the filter bag is prevented from being dispersed into the coalbed methane due to excessive oscillation, and filtering strength is improved; according to the invention. The pulverized coal filtering and collecting device can well clean the filter bag by adopting a cleaning solution, and operation is simple and convenient; an electromagnetic mode is adopted for oscillation, so structure is simple, and the device can adapt to a severe environment with considerable dust, i.e., pulverized coal of coalbed methane.

Description

technical field [0001] The invention relates to the technical field of coal bed gas mining, in particular to a coal powder filtering and collecting device for coal bed gas mining. Background technique [0002] During the mining process of coalbed methane, coal powder will be produced, and for coal powder, its production mechanism is that the geological characteristics of the coal seam determine that coal powder will be produced during engineering disturbance and other processes. Coal seam geological characteristics (such as coal rock composition, inorganic mineral composition, degree of metamorphism, coal body structure, etc.) Inducing factors for powder production. In the drainage and depressurization process of coalbed methane development, the drainage system is unreasonable, the drainage intensity is high, the gas production growth rate is fast, and the bottom hole pressure fluctuation will also affect the production of coal powder. In the process of mining coalbed meth...

AI Technical Summary

Problems solved by technology

In the process of mining coalbed methane, coal powder needs to be collected and processed, otherwise it is easy to cause coal powder to deposit in the seepage channel and cause blockage. Pulverized coal can dredge the seepage channel, and it is also prone to phenomena such as pump jamming, which affects the mining efficiency and performance of coalbed methane

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