Click image to view original image
The Introduction of Cement Preheater :
Cement Preheater design has evolved rapidly since the beginning of the 20th century, to meet the needs of modern production. In the past 30 years, growing production volumes and increasing energy costs have made the preheater system a key factor in efficient cement production. Its design and complexity has evolved rapidly.
These advances deliver both capacity and energy benefits. Today’s dry process kilns, coupled to multiple-stage preheater systems, have up to 20 times as much production capacity as similarly sized wet process kilns. The thermal efficiency and capacity of a modern cement-making operation is very high. But it can be even higher.
The cement preheater is also named precalciner,Integrating precalciner into the cyclone system is one way to improve energy use. Utilizing heated air from the cooler, precalciners dramatically improve the system’s thermal efficiency. This method has grown tremendously since the 70’s energy crisis.Precalciners also help reduce fuel costs by optimizing the burning of cheaper waste and low-grade fuels. However, there are some special considerations for lining the precalciner, and appropriate refractory precautions must be taken when burning waste fuels.
