A kind of exhaust gas oxidation device

Abstract

The invention relates to a ventilation air methane oxidation device. The ventilation air methane oxidation device comprises an oxidation furnace main body; from the top to the bottom, the oxidation furnace main body is provided with an uniform gas inlet box, a combustion chamber oxidation zone, a heat accumulator, a hydrocyclone, and heating units; the uniform gas inlet box is provided with first gas inlets, the lower part of the oxidation furnace main body is provided with second gas inlets, and the first gas inlets and the second gas inlets are all communicated with a ventilation air methane gas inlet pipe via valves; a plurality of gas flow pipes are vertically arranged in the combustion chamber oxidation zone with intervals, and the upper ends of the gas flow pipes are communicated with the uniform gas inlet box; the heat accumulator is arranged on the lower ends of the gas flow pipes; the side wall of the upper part of the combustion chamber oxidation zone is provided with smoke outlets, and the smoke outlets are communicated with the gaps among the plurality of gas flow pipes in the combustion chamber oxidation zone; and heat exchangers are arranged on smoke exhaust pipes communicated with the smoke outlets. The ventilation air methane oxidation device is capable of realizing gas oxidation continuously and rapidly; heat accumulation is high, ventilation air oxidation time is long, efficiency is high, adjustment is stable, heat exchange is rapid, and power is increased.

Description

technical field [0001] The invention relates to an exhaust gas oxidation device, which belongs to the field of exhaust gas oxidation devices. Background technique [0002] "Fair wind" is also called "coal mine wind exhaust gas", which refers to coal mine gas with methane concentration lower than 0.75%. According to the statistics of relevant departments, the methane emitted into the atmosphere from exhaust air in China every year is equivalent to the gas transmission volume of the West-East Gas Pipeline for one year, and the greenhouse gas effect produced is about 200 million tons of carbon dioxide equivalent. Although the concentration of wind exhaust gas is extremely low, the total amount is extremely large. The methane contained in it accounts for about 81% of the total amount of methane in my country's coal mines, and the annual emission is more than 15 billion cubic meters. [0003] At the present stage, most of the exhaust-air oxidation boilers are made of steel, and ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of exhaust air gas oxidation device, which overcomes the defects of high cost of exhaust air oxidation boilers in the prior art, difficulty in realizing continuous and rapid oxidation process, and limited practical application

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