Talk about waste heat power generation technology

Waste heat power generation production process and control of waste heat power generation, with the clinker production process line is different, there are generally two types of kiln, three forms of power generation. The secondary waste heat power generation system adopts vertical waste heat boiler and supplementary steam turbine generator set. The vertical waste heat boiler completely solves the problems of air leakage and temperature field practice distribution in the horizontal waste heat boiler are completely different from the temperature envisaged in the boiler design.

Can greatly improve the output value of boiler steam; The waste gas waste heat discharged by the grate cooler or vertical waste heat boiler can be fully recovered and used for power generation. In this way, the power generation of tons of clinker waste heat can be increased to more than 195 kilowatt-hours under the premise of constant clinker heat consumption, so that the comprehensive energy consumption of the kiln can reach the energy consumption level of the planned pre-differentiated kiln.

In order to overcome the defects of the low-temperature waste heat power generation system with supplementary fired boilers, the use of supplementary steam turbine units, fully recover the waste gas heat below 200℃, together with the supplementary fired boiler should be coal gangue and other inferior coal or waste as fuel, in addition to saving high-quality coal, but also for the production of material supply, reduce the cost of power generation, and further improve economic benefits.

Medium-low temperature waste heat power generation is mainly used to recover 300℃ exhaust gas from the kiln head cooling machine and 400℃ exhaust gas from the kiln tail for power generation or cogeneration. The control system involved in the waste heat power station is mainly MCS (analog control) and SCS (sequence control). In the control plan, logic (sequence) control accounts for the majority, mainly the logical start and stop of various electrical equipment.