Heating control method of heat furnace

Details Heating control method of heat furnace Heating control method of heat furnace

1986-02-26

1987-04-14

Makay, Albert J.

Heating

Processes of heating or heater operation

Subjecting work to diverse treatments or graduated temperatures

236 15BB, 266 80, 266 87, 266 90, 432 37, F27B 912

Patent

active

046575073

ABSTRACT:
In heating control method of a heat furnace, three non-linear models, model to calculate furnace temperature based on the fuel flow rate by unsteady heat balance system, model to estimate furnace wall temperature distribution based on the furnace temperature and model to estimate material temperature based on the furnace temperature, are used, linearization is performed by perturbation simulation to vary the flow rate stepwise and the optimization to minimize the fuel flow rate is performed and the optimum furnace temperature per each material is determined, and the mixed combustion ratio of plural fuels obtained by dividing total calorific value of each fuel by total calorific value of all fuels and the furnace temperature setting value are calculated using the optimum furnace temperature per material and then set.

REFERENCES:
patent: 4255133 (1981-03-01), Tanifuji et al.
patent: 4394121 (1983-07-01), Wakamiya et al.
patent: 4501552 (1985-02-01), Wakamiya
patent: 4606529 (1986-08-01), Tooch

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