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Method and device for collecting ventilation air methane on top of diffuser of main fan of coal mine

A diffuser and ventilator technology, applied in the field of wind collection, can solve the problems of waste of non-renewable resources, aggravation of air pollution and greenhouse gas effect, and achieve the effect of simple structure, convenient installation and high recycling efficiency

Inactive Publication Date: 2014-02-05
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

The direct discharge of exhaust gas from coal mines into the atmosphere, on the one hand, causes a serious waste of limited non-renewable resources, and on the other hand, aggravates air pollution and greenhouse gas effects

Method used

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  • Method and device for collecting ventilation air methane on top of diffuser of main fan of coal mine
  • Method and device for collecting ventilation air methane on top of diffuser of main fan of coal mine
  • Method and device for collecting ventilation air methane on top of diffuser of main fan of coal mine

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Embodiment Construction

[0028] The method for collecting the exhaust gas at the top of the diffuser of the main ventilator in the coal mine described in the present invention has the main purpose of effectively collecting and collecting the exhaust gas under the premise of ensuring the production safety of the coal mine and not affecting the working conditions of the main ventilators in the coal mine. To achieve the purpose of saving energy, using energy and protecting the environment. The specific process includes:

[0029] First, fix the wind collecting hood along the wind flow direction at the top outlet of the diffuser of the main fan in the coal mine, so as to keep a certain connection distance between the wind collecting hood and the top outlet of the diffuser.

[0030] Wherein, the inner wall of the air collecting hood maintains a streamlined curve, and the air collecting hood fixed along the wind flow direction at the top outlet of the diffuser can be such that the inlet of the air collecting...

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Abstract

The invention discloses a method and a device for collecting ventilation air methane on the top of a diffuser of a main fan of a coal mine. The device comprises an air-collecting hood, an air-collecting pipeline and connecting supports, the air-collecting hood is fixed on the extension line of the air flow direction of the outlet of the top of the diffuser of the main fan of the coal mine by the connecting supports, and the air-collecting pipeline is connected with the outlet of the air-collecting hood. The air-collecting hood utilizes the loss of the kinetic energy of ventilation to fulfill the process of ventilation air methane collection, the normal working condition of the fan of the coal mine cannot be affected, new energy consumption is not generated as well, the coal mine methane utilization rate is increased, and the atmospheric environment is protected. The structure of the collecting device is simple and practical, the device is convenient to mount, the collection cost is low, the benefit of recovery is high, and the device is applicable to both common centrifugal fans and axial fans in coal mines.

Description

technical field [0001] The invention relates to an air collection method, in particular to a method and a device capable of effectively collecting exhaust air gas at the top of a diffuser of a main fan in a coal mine without affecting the working conditions of a main fan in a coal mine, and belongs to the field of supporting equipment for a coal mine. Background technique [0002] Studies have shown that the vast majority of mine gas in my country is discharged into the atmosphere in the form of exhaust air. Statistics show that in 2010 my country's coal mine gas emission was about 20 billion m 3 About 18 million tons of crude oil or 30 million tons of standard coal are wasted every year. Not only that, the greenhouse effect produced by methane in exhaust wind is CO 2 21 times that of CO, and its ability to destroy the ozone layer is about CO 2 7 times. The direct emission of exhaust gas from coal mines into the atmosphere, on the one hand, causes serious waste of limite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00E21F1/04
Inventor 王凯郭燕伟朱应高涵
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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