Mixing device for high-concentration gas and low-concentration gas, and using method thereof

Abstract

The invention discloses a mixing device for high-concentration gas and low-concentration gas. The mixing device comprises a high-concentration gas pipeline, a low-concentration gas pipeline and a gas mixing tank, wherein the mounting position of the high-concentration gas pipeline is lower than the mounting position of the low-concentration gas pipeline; the high-concentration gas pipeline is connected with a first inlet of the gas mixing tank; the low-concentration gas pipeline is connected with a second inlet of the gas mixing tank; an outlet of the gas mixing tank is connected with a first pipeline; the high-concentration gas pipeline is sleeved with a water jacket; the water jacket is connected with a hot water supply mechanism; and the hot water supply mechanism is used for heating gas in the high-concentration gas pipeline to 80 +/- 3 DEG C through a water jacket. The invention further discloses a corresponding using method. According to the invention, uniform gas mixing is achieved through temperature convergence and density convergence, low-concentration gas can also be utilized, resource waste and environmental pollution caused by direct emptying of the low-concentration gas are avoided, energy is fully utilized, and the explosion problem of the low-concentration gas is effectively prevented.

Description

technical field [0001] The invention relates to the field of mine gas development and control, in particular to a high-low-concentration gas mixing device for low-concentration gas utilization. Background technique [0002] my country's coal mine gas emissions rank first in the world. During the coal mining process, low-concentration gas is pumped out at 3% to 30%. emissions, causing environmental pollution, and may also cause major safety accidents. [0003] Considering the protection of the ecological environment, the development of new energy, and the management of potential safety hazards in abandoned coal mines, the development of low-concentration gas resources has been highly valued by all parties, and the utilization of low-concentration gas will become the focus of gas utilization in the future. At present, the structure of the device used to mix high and low concentration gas is relatively complicated. In order to mix uniformly, a two-stage mixing structure needs t...

AI Technical Summary

Problems solved by technology

At present, the structure of the device used to mix high and low concentration gas is relatively complicated. In order to mix uniformly, a two-stage mixing structure needs to be designed, and mechanical devices such as stirring blades need to be inserted into the mixing structure to make the gas generate vortex to promote uniform mixing.

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