Waste heat is the energy which is not be used in energy utilization equipment under certain economic and technological conditions, it is called surplus or waste energy. Recovery and utilization of waste heat is an important way to improve economy and save fuel.
With the development of cement industry, the energy-saving technology of cement industry in developed countries has developed rapidly. Low-temperature waste heat is recycled in cement production process, and the thermal energy utilization rate of cement clinker has been greatly improved. However, due to the restriction of energy-saving technology, equipment level and the influence of energy-saving consciousness, there are still a large number of waste heat resources of medium and low temperature exhaust gas not fully utilized in kiln industrial enterprises, and the phenomenon of energy waste is still very prominent.
The waste gas discharged from the clinker cooler and the preheater in the new dry process cement clinker production plant is about 350, Its thermal energy is about 35% of the heat consumption of the cement clinker calcining system. The application of low temperature waste heat power generation technology could recover the waste heat, increase the energy utilization rate of cement plant up to 95%. The economic benefits of the project is considerable.