LP Amina new S-type Coal Classifier Improves Efficiency, Reduces Pollution
LP Amina has successfully completed its first coal classifier modification at the Fengtai power plant in China. The newly patented LP Amina S-type static classifier substantially increases coal particle uniformity with no additional moving parts required. Unlike dynamic classifier modifications, which require motors and very substantial classifier re-work, LP Amina’s S-type classifier produces equivalent results with much lower initial cost and no additional recurring expenses. The LP Amina modification represents perhaps the most significant breakthrough in coal classifiers in the past 50 years.
At the Fengtai power plant, located in the central Chinese province of Anhui, LP Amina’s S-type classifier proved far less restrictive than the unmodified design, allowing plant operators to decrease fan usage – saving energy. Post modification, the plant increased coal throughput 5-10%, allowing more opportunity to take redundant pulverizers out of service for maintenance and/or saving the cost of operating unnecessary pulverizers. By far the most important benefit of the modification however, was the improvement of coal particle uniformity. Large coal particles entering the boiler do not fully combust, in turn failure to fully burn these particles wastes energy and also damages boiler internals and associated equipment. Unburned particles create problems for pollution abatement equipment. Post modification, large particles were completely eliminated. Preliminary test results from the new modification point to improved energy efficiency and the potential for significant NOx air pollution reduction.