Waste hydrogen combustion system for full-hydrogen bell-type furnace used for bright annealing

Abstract

The invention relates to a waste hydrogen combustion system for a full-hydrogen bell-type furnace used for bright annealing. The waste hydrogen combustion system comprises a main burner, a waste hydrogen burner and an auxiliary burner which are fixed on a shell, and a gas pipeline, a waste hydrogen pipeline and an air pipeline which are distributed on the shell, wherein the main burner is connected with the gas pipeline and the air pipeline; the waste hydrogen burner is connected with the waste hydrogen pipeline and the air pipeline; the auxiliary burner is connected with the gas pipeline andthe air pipeline; and the flame combustion direction of the waste hydrogen burner is tangent to the outer wall of an inner covered muffle and is not contacted with the outer wall of the inner coveredmuffle. The flame combustion direction of the waste hydrogen burner can ensure the best heat conduction efficiency and avoid damage or deformation caused by overhigh local temperature due to direct contact of flames and a muffle cover; the auxiliary burner has two electrodes, and when the ignition failure times is greater than a set value, a combustion chamber is needed to be blown, residual hydrogen is blown, and blast is prevented; and energy loss is reduced, the using amount of gas is reduced, and the environmental pollution is lightened.

Description

technical field [0001] The invention relates to the field of industrial annealing in metallurgical manufacture, in particular to a waste hydrogen combustion system of a full-hydrogen bell-type furnace for bright annealing. Background technique [0002] The full hydrogen bell furnace is suitable for recrystallization bright annealing of cold rolled coils, producing low energy consumption, high quality and high output. With the rapid development of industry, the demand for high-quality sheet metal in the market continues to increase. Bell annealing furnaces, especially all-hydrogen strong convection bell annealing furnaces, as advanced heat treatment equipment for bright annealing of plates and strips, have gained more and more attention. The wider the application. [0003] The principle is to use hydrogen as a protective atmosphere during the annealing process to avoid material oxidation, thereby achieving the purpose of bright annealing. However, if hydrogen is used as a p...

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Problems solved by technology

However, if hydrogen is used as a protective atmosphere, a large amount of waste hydrogen mixed with volatile rolling oil and emulsion will be discharged into the atmosphere during the heating process, which not only causes environmental pollution but also wastes energy.

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