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

Abstract

The invention relates to a full-hydrogen bell-type furnace waste hydrogen combustion system for bright annealing, which includes a main burner fixed on the shell, a waste hydrogen burner and an auxiliary Hydrogen pipeline and air pipeline, the main burner is connected with the gas pipeline and 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 and the air pipeline, and the flame of the waste hydrogen burner The burning direction is tangent to the outer wall of the inner cover muffle, and is not in contact with the outer wall of the inner cover muffle. The flame combustion direction setting of the waste hydrogen burner can not only ensure the best heat transfer efficiency, but also avoid the damage or deformation caused by the local high temperature caused by the direct contact of the flame with the muffle cover; the auxiliary burner uses two electrodes, when If the number of ignition failures exceeds the set value, it is necessary to purge the combustion chamber to purge the residual hydrogen to prevent explosion; it reduces energy loss, reduces gas consumption, and also reduces environmental pollution.

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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