The use of cement rotary kiln is becoming more and more extensive. As we all know, the operation of this equipment is inseparable from the control system. In order to make it easier for everyone to operate the system and understand the knowledge of the equipment, let's introduce its cascade control system today. Let's have a look.

In the operation of this equipment, a regulating valve is installed on the fuel oil pipeline for heating to control the fuel oil flow and control the outlet temperature. Due to the large time constant of cement rotary kiln heating furnace and many disturbance factors, such as disturbance on raw material side and load disturbance; The single loop feedback control system can not meet the requirements of the process for the outlet temperature of the heating furnace. In order to improve the control quality, a cascade control system is adopted, which uses the rapid action of the auxiliary circuit, takes the outlet temperature of the cement rotary kiln as the main variable, and selects the furnace temperature with small lag as the auxiliary variable to form a cascade control system of furnace outlet temperature and furnace temperature, so as to improve the control quality and meet the requirements of industrial production. In summary, it is a transitional process in which the main and auxiliary variables deviate from the set value under the action of disturbance, and the main and auxiliary regulators overcome the disturbance through control, so as to restore the system to a new stable state.

As a necessary equipment in industry and other fields, the operation control of cement rotary kiln is also very important. According to the explanation in this paper, you can generally understand the cascade control system of this equipment, so as to pave the way for you to use the equipment more conveniently in the future.