Gas decomposition eliminating liquid and coal mine gas control method

A technology for coal mine gas and gas, which is applied in the field of gas decomposition and elimination liquid and coal mine gas treatment, can solve the problems of large investment, difficult gas elimination and high production cost, etc., and achieves the effect of reducing coal road gas and reducing treatment costs.

Inactive Publication Date: 2010-12-08
吴星剑
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems in traditional governance methods: ① relatively large investment, resulting in high production costs
Therefore, it is conceivable that it is difficult to complete the dissolution of gas well only by the action of acetic acid and yeast

Method used

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  • Gas decomposition eliminating liquid and coal mine gas control method
  • Gas decomposition eliminating liquid and coal mine gas control method
  • Gas decomposition eliminating liquid and coal mine gas control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 effect comparative test

[0038] In the middle and late March of 2009, the effect verification test was carried out on the 9011 tunneling surface of a coal mine in Xinmi City. The method is as follows:

[0039] (1) First purchase various raw materials according to the amount required for calculation, and prepare the gas decomposition and elimination liquid after uniform mixing according to the following composition ratios (weight percentages): beer (10°P) 2%, acetic acid 12%, acetic acid Cobalt 0.08%, the balance is water.

[0040] (2) On March 14th, the coal seam A section (10m 2 Drill 4 liquid injection holes (Φ42mm, hole depth 6m, hole spacing 1m) in the middle area. The drilling direction and the coal seam trend are at an angle of 15°. Before the liquid injection starts, measure and record the gas concentration, return Wind gas concentration and coal gas concentration (measured multiple times with multiple data points, taking the average value), and t...

Embodiment 2

[0045] Embodiment 2 Application example of a coal mine in Gongyi City

[0046] In August 2008, at the M coal seam working face of the mine (with an area of ​​nearly 9m 2 ) Drill four liquid injection holes (Φ42mm, hole depth 6m, hole spacing 80cm), the drilling direction is consistent with the coal seam inclination direction; before the gas elimination liquid is injected, the detected gas concentration in the coal body is 95%. To each hole, inject 14kg of gas elimination solution, after the sealing reaction for 4 hours, the gas concentration in the coal body is detected to be down to 19%. Cobalt acetate 0.07%, the rest is water.

Embodiment 3

[0047] Embodiment 3 Application example of a coal mine in Pingdingshan City

[0048] In March 2009, at the W coal seam working face of the mine (with an area of ​​12m 2 ) Drilling 5 liquid injection holes (Φ42mm, hole depth 6m, hole spacing 70cm), the drilling direction is consistent with the inclination direction of the coal seam; before injecting the gas decomposition and elimination liquid, the gas concentration in the coal body is detected as high as 96%, with a pressure of 12Mpa Inject 11kg of gas elimination solution into each hole, and after 3.5 hours of sealing reaction, the gas concentration in the detected coal drops to 16%. Cobalt acetate 0.1%, the rest is water.

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Abstract

The invention relates to a gas decomposition eliminating liquid and a coal mine gas control method. The gas decomposition eliminating liquid is mainly prepared by uniformly mixing beer, acetic acid, cobalt acetate and the like, the gas control method by the gas decomposition eliminating liquid comprises the steps of: drilling liquid injection drill holes on a coal mining face at an interval between 0.6m and 1.5m in the direction same as an inclined direction of a coal layer or at an inclined angle between 0 degree and 20 degrees with the inclined direction of the coal layer, and then injecting the gas decomposition eliminating liquid in the drill holes under a certain pressure to react for 3.5-5 hours. The gas decomposition eliminating liquid is green, satisfies the environmental protection requirement, and is prepared from nontoxic and harmless raw materials, and reaction products of the gas composition eliminating liquid with components of gas are also nontoxic and harmless, and have not harmful affects to the quality and use of coal. The gas control method has simple operation and low cost, and can effectively eliminate gas in coal by over 96%, and gas in coal lanes obviously reduces under a safety limit in the process of injecting the gas decomposition eliminating liquid in the coal.

Description

technical field [0001] The invention relates to the field of coal mine safety production, in particular to a gas decomposition and elimination liquid and a coal mine gas control method. Background technique [0002] Coal is an important basic energy in my country, accounting for about 70% of the country's primary energy consumption, and has an important strategic position in the national economy. Since the reform and opening up, the coal industry has achieved considerable development, with continuous growth in output, gradual improvement in production technology, and improvement in production safety conditions. However, there are still problems such as extensive growth methods, frequent safety accidents, serious waste of resources, and lagging behind in environmental governance. In particular, the frequent occurrence of safety accidents has attracted worldwide attention. Nearly half of the state-owned key coal mines are high gas and coal and gas outburst mines, and more tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00
Inventor 吴星剑吴青
Owner 吴星剑
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