Low-concentration gas efficient mixing device and method

Abstract

The invention discloses a low-concentration gas efficient mixing device and method. The low-concentration gas efficient mixing device mainly comprises a mixing cavity, a gas inlet pipe opening, a gas outlet pipe opening, a low-concentration gas inlet pipe, an air inlet pipe, a flange, turbulent flow equipment, a turbulent flow gas inlet end and a turbulent flow device, wherein the turbulent flow equipment and the turbulent flow device are arranged inside the mixing cavity; the turbulent flow gas inlet end is arranged at the outer side of the front half section of the mixing cavity; air and low-concentration gas enter the mixing cavity through the gas inlet pipe opening to be mixed; the mixing intensity is enhanced by using the turbulent flow equipment and the turbulent flow device inside the mixing cavity; and good mixing uniformity is achieved; meanwhile, the mixing intensity of the mixing device is regulated through the regulation of the turbulent flow gas inlet, so that the goal of precisely controlling the mixing uniformity of the mixed gas is achieved. The mixing intensity of the mixing device is enhanced; the mixing time is greatly shortened; the length of the mixing section is reduced, so that the investment cost of the mixing device is reduced; the installation space environment of the mixing device is also improved; and the obvious popularization values are realized.

Description

technical field [0001] The invention belongs to the technical field of pneumatic mixing, and in particular relates to a low-concentration gas high-efficiency mixing device and method. Background technique [0002] Due to the design of the production process of coal mines, coal mines in my country usually produce gas with different gas concentrations during the production process. Among them, high-concentration gas can be used directly, while low-concentration gas, especially ventilation gas, due to the low gas methane concentration ( <0.3%) and large fluctuations, which is not conducive to the stable operation of the oxidation device. For example, the most important and promising technology for effective treatment of ultra-low-concentration and large-volume coal mine ventilation gas is regenerative oxidation technology. Before performing regenerative oxidation, it is necessary to mix low-concentration gas with air. Form the gas mixture with the gas concentration required ...

AI Technical Summary

Problems solved by technology

The swirl vane blending mentioned in the patented technology "Swirling Flow Blending Device" (CN105032225A) is a method that can achieve better blending uniformity, but this blending method cannot effectively adjust the blending of the blending device according to demand. mixed strength

In the patented technology "A Coal Mine Gas Blending Device" (CN106237880A), the annular tube is used to form gases with different airflow directions for blending. This method has a simple structure and low blending pressure loss, but the blending effect of this method is Obviously lower than the blending method in the patented technology (CN105032225A)

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