Regenerative combustion device applicable to stable combustion of compounded tangent-flow and direct-flow gas with low calorific value

A combustion device and low calorific value technology, applied in the field of clean utilization of gas, can solve the problems that low calorific value gas is difficult to burn stably and continuously, reduce combustion efficiency and burnout rate, and easily form channel flow, etc. The effect of reducing nitrogen oxides and increasing the degree of fluid mixing
CN103868055AInactive Publication Date: 2014-06-18INST OF PROCESS ENG CHINESE ACAD OF SCI +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2014-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the clean utilization field of gas and relates to a device applicable to combustion of gas with the low calorific value. The device comprises a combustion tower (3), a gas inlet (1), a smoke outlet (5), a primary air pipe (9) which is communicated with an air chamber (12), an ignition hole (11), a secondary air pipe (8) and a combustion stabilizing cone (2), wherein the secondary air pipe (8) is connected with a plurality of branch gas pipes (7) through multistage of annular distributors (6); the branch gas pipes (7) are tangentially communicated with the inside of the combustion tower (3); the combustion stabilizing cone (2) is cone-shaped or frustum-shaped and arranged above the gas inlet (1) in the combustion tower (3); a plurality of channels are evenly formed in the wall surface of the combustion stabilizing cone. The device is capable of reducing heat needed by igniting the gas with the low calorific value in a hierarchical air supply manner, increasing the ignition heat supply through a multi-channel regenerative combustion stabilizing cone, facilitating the mixing of the compounded tangent-flow and direct-flow gas and the air in a manner of compounding tangent flows and direct flows, so that the efficient and stable combustion of the gas with the low calorific value is realized.
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Description

technical field

[0001] The invention relates to the field of clean utilization of gas, in particular, the invention relates to a combustion device suitable for low-calorific-value gas cut-flow and direct-current compound stable combustion and thermal storage. Background technique

[0002] With the rapid development of my country's industry, more and more occasions will produce various low-quality combustible gases with low calorific value, low combustible components, and unstable combustion performance. Common low-calorific gas fuels mainly include low-calorific value tail gas in chemical processes , blast furnace gas, petrochemical industry smelting tail gas, low-concentration coal mine gas, and C produced by biomass pyrolysis 2 h 2 , CO, CH 4 and other combustible gas, and biogas produced in the breeding and brewing industry. With the improvement of national environmental protection requirements, this kind of combustible gas will not be directly discharged into the atmos...

Claims

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