Preliminary Studies of HTAC Technology Applications in Boiler Fired with Pulverized Coal

摘要

High Temperature Air Combustion (HTAC) technology is probably the most important achievement of combustion technology of recent years. It has been successfully introduced in hundreds of industrial furnaces which is extraordinary fast progress as for energy technology. In these furnaces was observed significant reduction in fuel consumption and harmful substances emission. Although all applications are limited to industrial furnaces, HTAC technology should give significant advantages when applied in boilers. In this paper, the authors analyze a simple design of a boiler operating on HTAC technology fired with pulverized coal. The calculations were done using the commercial CFD code Fluent (version 6.2.16). Selection of the mathematical models is based on the simulation of the IFRF experiment called HTAC 99, which was one previous work of the authors [1]. It has been found the exact geometry of the combustion chamber, location of the burner block in the boiler and distance between individual burners. Finally, calculation with the investigated design of the boiler operating with HTAC conditions fired with pulverized coal has been done. The results of a series of mathematical modelling will be presented and discussed in this paper. This work demonstrated an extremely attractive technology for efficient and environmentally friendly combustion.