Combustor started regenerative catalytic oxidation device with a plurality of reaction chambers for coal mine ventilation air methane (VAM)

Abstract

The invention relates to a combustor started regenerative catalytic oxidation device with a plurality of reaction chambers for coal mine ventilation air methane. A VAM delivery pipe is connected with a VAM intake manifold through a blower, each reaction chamber is defined by a reaction chamber casing provided with a thermal insulation layer, and a catalyst ceramic layer is arranged in each reaction chamber. The device is characterized in that a combustor is arranged on the VAM intake manifold, an inlet of each reaction chamber is connected with the VAM intake manifold through an expansion pipe and a VAM intake branch pipe sequentially, an outlet of each reaction chamber is connected with a VAM exhaust manifold through a constricted pipe and a VAM exhaust branch pipe sequentially, and the other end of the VAM exhaust manifold is communicated with the air. A regenerative system comprises a regenerative inlet pipe, a regenerative fan and a regenerative connecting pipe provided with a regenerative valve, wherein the regenerative inlet pipe is communicated with the VAM exhaust manifold, and the other end of the regenerative inlet pipe is communicated with the VAM intake manifold through the regenerative fan and the regenerative connecting pipe sequentially. The regenerative catalytic oxidation device has the advantages of being compact in structure, high in heat recovery efficiency, simple in operation, rapid in starting speed, small in occupied area and the like.

Description

technical field [0001] The invention provides a multi-reaction chamber coal mine exhaust air recovery heat catalytic oxidation device with a burner start, belonging to the technical field of ultra-low concentration methane oxidation. Background technique [0002] The main component of coal mine gas is methane, which is a gas energy that can be utilized. However, in order to improve the safety of coal mine production, a large amount of ventilation is usually used to dilute the gas and discharge it directly into the atmosphere. On the one hand, the direct emission of exhaust gas from coal mines has caused a huge waste of limited non-renewable resources, and on the other hand, it has also exacerbated air pollution and the greenhouse effect: the greenhouse effect of methane in 100 years is 21 times that of carbon dioxide, and methane accounts for 17% of global warming share, second only to carbon dioxide. At present, my country's coal mines emit as much as 20 billion Nm of met...

AI Technical Summary

Problems solved by technology

However, due to the heat recovery of the hot gas after exhaust air oxidation through the preheater, the heat recovery efficiency is limited by the preheater, and its efficiency is limited. At the same time, the preheater increases the cost and floor space of the entire oxidation device, which needs to be determined. to further improve

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