POSITIVE PRESSURE COKE OVEN HEATING SYSTEM AND METHOD FOR TEMPERATURE CONTROL Russian patent published in 2021 - IPC G05B19/05 G05D27/02 C10B17/00 

FIELD: heating.

SUBSTANCE: invention relates to the field of coke oven heating (heat curing) technologies, in particular to a positive pressure coke oven heating system (positive pressure heating system for a coke oven) and a temperature control method. A system of heating a coke oven at positive pressure and a method for temperature control are claimed. This method includes: setting the pressure on the heating gas main gas pipeline as a control object, automatic calculation and real-time regulation of the degree of opening of the electric control valve of the heating gas main gas pipeline (2) in accordance with the deviation between the actual and set pressure, as well as the rate of change of the deviation to ensure the stability of the heating gas pressure during the heating process. Regarding the regulation of the heating device (5) at positive pressure, input of the feedback value regarding the degree of opening of the control valve of the heating gas outlet to the control system for step regulation. In this case, the main circuit is designed to control the heating temperature of the coke oven, and the second circuit is designed to control the degree of opening of the specified control valve. With regard to controlling the opening degree of said control valve, adding the default opening degree control of said control valve to eliminate free play, thereby eliminating the influence caused by free running said control valve in the positive pressure coke oven heating device.

EFFECT: precise control of heating temperature and improved accuracy of automatic temperature control of the heating system under positive pressure.

16 cl, 6 dwg