An integrated anti-reflection enhancer for coal and gas mining, preparation method and application

Abstract

The invention belongs to the technical field of high-efficiency and safe production in mines, and discloses an integrated anti-reflection enhancer for coal and gas mining, a preparation method and an application thereof. According to mass percentage, it consists of 6%-10% of 20mol / l concentrated nitric acid, 1 %-5% sodium N-lauroyl creatine, 2%-6% 1-butyl-3-methylimidazolium chloride and mine dust control water. The physical and chemical modification of the coal body by the coal and gas mining integrated enhancer provided by the invention can increase the wettability of the coal body, suppress and reduce the generation of dust in the coal seam mining process, greatly improve the permeability of the coal body, and improve the coal seam Occurrence and mining conditions are conducive to the efficient development and utilization of coalbed methane, improving coalbed methane mining to alleviate energy shortages, preventing gas disasters in underground coal mines, and reducing greenhouse gas emissions. Safe and efficient production level.

Description

A kind of coal and gas mining integrated permeability enhancement enhancer, preparation method and application technical field The invention belongs to mine efficient and safe production technical field, relate in particular to a kind of coal and gas mining integration anti-permeability Strengthening agent, preparation method and application. Background technique At present, coal is China's strategic resource, and the proportions in my country's primary energy production and consumption structure are respectively 65% and 60.3%. 92% of coal production in my country is underground mining, and the average depth has reached 660m. And the mining conditions are complex, and there are problems such as low coal seam permeability, poor wettability, large mining pollution and low efficiency. due to these Due to the limitation of its own nature, it has low coal seam water injection rate, poor coal wettability and pollution in the process of mining and use. The problem of dy...

AI Technical Summary

Problems solved by technology

[0005] (1) Underground coal seam occurrence and mining conditions are complex, with low coal seam permeability, poor wettability, large mining pollution and low efficiency

[0006] (2) Due to the limitations of these inherent properties, there are low coal seam water injection rates, poor coal wetting performance and large pollution during mining and use.

[0008] In recent years, the mining depth of my country's coal mines has continued to increase, and the level of mechanized and automated mining has gradually increased. 92% of my country's coal production is underground mining, and the average depth has reached 660m. The existing and mining conditions are complex, and there are problems such as small coal seam porosity, low permeability, and poor water injection efficiency. During the production process of coal mines, coal and gas outbursts, roof accidents, and pneumoconiosis and other natural disasters are constantly escalating, resulting in a large number of losses in manpower and material resources.

At present, all kinds of coal mines in my country have more or less adopted some measures to improve the coal body structure and improve high-efficiency and safety production efficiency, such as hydraulic fracturing, hydraulic slotting, pre-splitting blasting, thermal displacement and other anti-reflection technologies; but from In terms of application effect, the effect is not very ideal, such as hydraulic fracturing (there are problems such as small anti-permeability range, fast crack closure, water lock effect, etc.), split water seam blasting (consumption of a lot of manpower and material resources, and the existence of danger) ; Coal seam water injection (low water injection efficiency, poor coal mine application benefits, etc.), heat injection method to coal seam (water or steam heat injection method not only has low efficiency, high energy consumption, but also aggravates the water lock effect), therefore, it is urgent to explore A new type of integrated anti-reflection enhancer and preparation method for coal and gas mining to achieve efficient coal and gas extraction and efficient use of existing resources

Images