Ultra-low-concentration gas combustion method and system

A technology of ultra-low concentration and combustion method, applied in combustion method, combustion type, incinerator, etc., can solve problems such as low gas heat extraction efficiency

Inactive Publication Date: 2015-10-21
杨君廷 +1
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Problems solved by technology

[0005] The invention provides an ultra-low concentration gas combustion method and system, which can solve the pro

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  • Ultra-low-concentration gas combustion method and system

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Embodiment 1

[0080] Such as figure 2 As shown, the ultra-low concentration gas and exhaust air enter the system through the ultra-low concentration gas source pipeline and mine exhaust gas pipeline respectively, and the ultra-low concentration is detected by the first gas concentration detector 101 installed on the ultra-low concentration gas source pipeline. Whether the gas concentration is within the set allowable fluctuation range, and it is regulated through the valve on the ultra-low concentration gas source pipeline; after that, the ultra-low concentration gas and exhaust air are mixed evenly in the mixing device 103, and set on the inlet pipeline by the blower 104 The second gas concentration detector 102 detects the concentration of ultra-low concentration gas in the mixed gas, and adjusts the exhaust air volume through the blower 104 to control the concentration of ultra-low concentration gas in the mixed gas to three times below the explosion limit at the corresponding initial te...

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Abstract

The invention provides an ultra-low-concentration gas combustion method and system which belongs to the field of recycle of ultra-low-concentration gas and can solve the problems of gas escape generated in the processing process of ventilation air methane and low heating efficiency in the prior art. The ultra-low-concentration gas combustion method comprises the following steps: a, supplying ultra-low-concentration gas and mixed ventilation air methane at initial temperature to a direct combustor, and gradually lighting the mixed ventilation air methane with a heat source medium in the direct combustor until all are lighted; b, sending the lighted mixed ventilation air methane into a reaction chamber for sufficient combustion, and therefore generating high temperature flue gas; c, gradually recycling the heat of the high temperature flue gas until the temperature of the flue gas lowers to the target temperature. The ultra-low-concentration gas combustion method and the system can be used for processing ultra-low-concentration gas.

Description

technical field [0001] The invention relates to the field of ultra-low concentration gas recovery and utilization, in particular to an ultra-low concentration gas combustion method and system. Background technique [0002] In the modern industrial production process of coal mines, high-concentration gas with a gas concentration of 30% can be directly utilized, and low-concentration gas with a concentration of 6-30% is difficult to be directly utilized. Most of them use internal combustion engine gas power generation technology for power generation. For the mine exhaust gas (exhaust air) with a concentration of less than 0.75%, the countercurrent regenerative exhaust air oxidation technology is used for treatment, and the ultra-low concentration gas with a concentration of 0.75-6% cannot be used at present, so it can only be diluted to Less than 0.75% is attributed to lack of wind. [0003] Although the concentration of exhaust air is extremely low, due to the huge total amo...

Claims

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Application Information

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IPC IPC(8): F23G7/06
CPCF23G7/06F23G2209/141
Inventor 王孝敏杨君廷
Owner 杨君廷
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