A joint control method of sintering desulfurization and main exhaust fan

Abstract

The invention relates to a sintering desulfurization and main exhaust fan joint control method which belongs to the technical field of joint control of a sintering main exhaust fan and a desulfurization fan, in particular to a method for controlling the valve opening of the main exhaust fan and the valve opening of the desulfurization fan automatically based on total sintering material amount change, desulfurization fan current change and desulfurization tower negative pressure value change. The method comprises two control modes according to increase and decrease situations of the total material amount of a sintering machine: 1), when the total material amount is increased, relevant operation on a main exhaust valve is increased; and 2), when the total material amount is decreased, the relevant operation on the main exhaust valve is decreased. The valve opening of the desulfurization fan is automatically adjusted in the two modes according to specific conditions. By implementing the sintering desulfurization and main exhaust fan joint control method, the automatic control level of the main exhaust fan and the desulfurization fan is greatly improved during a sintering production process; joint operation and joint adjustment on the main exhaust fan and the desulfurization fan are realized; stability of a desulfurization tower negative pressure value is ensured, and positive pressure and other dangerous conditions are avoided; and the effect of flue gas desulfurization is also improved.

Description

technical field [0001] The invention belongs to the technical field of combined control of a sintering main exhaust fan and a desulfurization fan, and particularly provides a method for combined control of a sintering desulfurization and a main exhaust fan. Background technique [0002] During the sintering production process, different total material volumes correspond to different air volume requirements. When the total material volume changes, the opening of the main exhaust fan valve needs to be adjusted accordingly. However, before adjusting the valve of the main exhaust fan, it is necessary to combine the negative pressure of the flue gas desulfurization system. If the valve of the main exhaust fan is adjusted blindly without considering the actual situation of the flue gas desulfurization system, it may cause the negative pressure of the desulfurization tower to develop in a positive direction, and the desulfurization capacity will decrease. , thus affecting normal p...

AI Technical Summary

Problems solved by technology

If the valve of the main exhaust fan is adjusted blindly without considering the actual situation of the flue gas desulfurization system, it may cause the negative pressure of the desulfurization tower to develop in a positive direction, and the desulfurization capacity will decrease. , thus affecting normal production

For a long time, the sintering plant has manually adjusted the switch of the main exhaust fan and desulfurization fan. This not only has a low level of automation, but also may cause large fluctuations in the negative pressure of the desulfurization system due to human negligence and wrong operation, affecting desulfurization. effect, affecting the sintering process

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