Over the past years, Taiheiyo Engineering Corporation (TEC), Tokyo has conducted numerous investigations in cement plants around the world for various clients who have process and operation problems or who are planning for innovations.
TEC have developed successful techniques to diagnose the existing cement plants and to overcome the existing process⁄operational problems and to reduce the fuel consumption and thus assuring stable kiln operation.
In the paper industry in Japan is implementing various measures to reduce the fuel consumption.
Although a certain improvement has been obtained, but not to the extent of large reduction of fuel consumption is obtained, so far.
Hence based on energy-saving technology adopted in cement plants, TEC has conducted extensive study in Lime Kiln operation achieved following successful results towards reduction of the fuel consumption.
1) Diagnosis of Lime Kiln : TEC have conducted a diagnosis study on existing Lime Kiln towards the existing process⁄operational problems and to found optimal countermeasures for reduction of the fuel consumption.
2) Replacement of existing Kiln Burner : By replacing the existing Kiln Burner with Taiheiyo’s TMP Burner (Taiheiyo Multi-purpose Burner), TEC achieved improved burnability efficiency and reduction in the amount of primary air.
3) Adjustment of Lime Cooler : For the improvement of heat recovery efficiency of existing Lime Kiln Cooler, Grate Speed Control and Airflow Control was adopted to Lime Kiln Cooler, for better cooling efficiency.
4) Adjustment of Kiln Operation : TEC has reduced the amount of water at the Lime Kiln Inlet Housing, thus optimizing the O
2 concentration control, and the raw meal filling ratio in the Lime Kiln.
As a result of adopting above mentioned countermeasures, TEC achieved a 13% to 15% reduction of the fuel consumption.
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