Measuring system and method for hydrogen sulfide gas content in coal seam

Abstract

The invention discloses a coal seam hydrogen sulfide gas content measurement system, which comprises a coal sample tank, a gas sample tank and a reaction tank with the same structure, all of which include a tank body and a detachable tank cover, and a desorption instrument includes a box body with an open top , the bottom of the box is filled with water, and the box is equipped with a measuring tube. The gas sample tank outlet valve is connected to the gas sample tank inlet valve through the first hose; the gas sample tank outlet valve is connected to the reaction tank inlet valve through the second hose. Air valve; the third hose between the connection valve and the reaction tank inlet and outlet valve is provided with a glass tube in series, and the glass tube is provided with wetted blue litmus paper; the third hose at the reaction tank inlet and outlet valve is connected with The fourth hose, the fourth hose is connected with the reactant inlet opening upwards, the present invention can directly and accurately measure the hydrogen sulfide content of the coal seam, the measurement amount is small, the cost is low, the cycle is short, reliable and accurate, the measurement system is The detection and prevention of coal seam hydrogen sulfide gas provides the basis.

Description

technical field [0001] The invention relates to the technical field of coal seam operations, in particular to the technology for measuring the content of hydrogen sulfide gas in coal seams. Background technique [0002] H in coal seam 2 S (that is, hydrogen sulfide) gas exists in adsorption and free states. Determining the content of hydrogen sulfide gas in coal seams is the basis and premise for the prevention and control of harmful gases in coal seams. [0003] Under standard conditions, hydrogen sulfide gas is a flammable acidic gas, colorless, and has the smell of rotten eggs at low concentrations. It is a strong neurotoxin, has a strong stimulating effect on mucous membranes, and can be dissolved in water. Occurs in industries such as extractive industry, sewage treatment, pelagic fishery, food processing and paper making. North America, Russia, France, China and Australia have successively reported accidents caused by this gas during coal mining. Hydrogen sulfide ga...

AI Technical Summary

Problems solved by technology

Hydrogen sulfide gas in coal seams exists in adsorbed and free states. Determining the content of hydrogen sulfide gas in coal seams is the basis and premise for accident prediction. However, the instruments and technologies for measuring the content of hydrogen sulfide gas in coal seams are currently lacking.

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