Metal magnesium and calcium reduction furnace thermal storage combustion system and control method thereof

Abstract

The invention relates to a metal magnesium and calcium reduction furnace thermal storage combustion system and a control method thereof. The metal magnesium and calcium reduction furnace thermal storage combustion system comprises a reduction furnace thermal storage combustion furnace body, a thermal storage nozzle and a program controller, wherein a plurality of reduction tanks are vertically arranged in a cavity of the furnace body; a sealing cover switching device is arranged at a slag hole of the reduction tank; a plurality of burner ports are uniformly formed around a side wall of the furnace body; and the thermal storage nozzle is arranged in the burner ports. The combustion flame is stable in temperature, the temperature in the reduction furnace is extremely high in uniformity, the hearth pressure is stable, according to the high efficiency of the combustion, the air supply can be reduced as much as possible, the oxidation burning loss on the surface of the reduction tank in the furnace is reduced, due to high uniformity of the furnace temperature field, the overall heating balance of the reduction tank is ensured, the reduction tank deformation, leakage vacuum, local coking adhesion inside the reduction tank caused by that local heating are reduced, a worker can simultaneously operate a plurality of reduction furnaces for slag removal, the manual cost is greatly saved, the labor intensity of the personnel is reduced, the manpower resources are saved, and the production safety is guaranteed.

Description

technical field [0001] The invention relates to a regenerative combustion system and a control method for a metal magnesium and metal calcium reduction furnace. Background technique [0002] The early reduction furnaces for smelting metal magnesium and metal calcium adopted the following combustion control methods: the furnace temperature and pressure were controlled by direct on-site manual or indirect manual adjustment of valves by installing remote hand-operated instruments in the control room. The ratio of air and gas is easy to delay and lag, and the time difference is relatively large, resulting in unstable temperature, large fluctuations in furnace pressure, and frequent alarms for the temperature of the exhaust pipe, even exceeding the safety allowable range. High-temperature flue gas is directly discharged through the pipe, causing With a lot of waste heat, due to the delay gap of manual adjustment, there will be some unburned harmful substances in it, which will po...

AI Technical Summary

Problems solved by technology

The ratio of air and gas is easy to delay and lag, and the time difference is relatively large, resulting in unstable temperature, large fluctuations in furnace pressure, and frequent alarms for the temperature of the exhaust pipe, even exceeding the safety allowable range. High-temperature flue gas is directly discharged through the pipe, causing Take a lot of waste heat, due to the delay gap of manual adjustment, there will be some unburned harmful substances in it, which will pollute the environment and waste energy

It is difficult to remove slag from the reduction furnace. Now the method of manual pot removal is widely used. The working environment is harsh and there are many workers, which is not conducive to large-scale production.

Therefore, the production and operation technology of this reduction furnace does not have the best cost-benefit ratio, and the production cost is relatively high

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