Experiment Research Of Regenerative High Temperature Air Generator Based On HTAC Technology

High Temperature Air Combustion (HTAC)is a newly developed technology in the field of fuel combustion since 1990's with unique advantages of significant energy saving and low pollution emission. Results from experimental investigation and industrial application show that this new combustion technology will open a new period for engineers and scientists to relieve energy crisis, to control pollutant emission generated from combustion and to improve effective usage of various fuels. The great attention has been paid on it in many developed countries such as Japa^ the United States and the Europe.The generation and fundamental principal of HTAC technology are illustrated as well as its development circumstances. The gasification system from biomass using high temperature air based on HTAC technology is introduced; and the working principal and key technologies of one of its core components -Regenerative High Temperature Air Generator are described.Co-operating with Zhuzhou Industrial Furnace Manufacturing Company, college of energy and power engineering of Central South University developed the first set of High-cycle Regenerative High Temperature Air Generator inside our country. A series of combustion experiments are carried out with propane as fuel under the conditions of different furnace temperature and switching period. The curves between temperature of heated air , exhaust gas , combustion area and switching period are obtained; The heat exchange rules of the honeycomb regenerator are analyzed and summarized; Both of the synthetic heat exchange coefficient and temperature efficient of the regenerator are calculated; The influences of the temperature of heated air and switching time are researched on nitrogen oxide emission; The optimum switching time of the generator is choosed in terms of all sorts of influential factors; The thermal balance of the system is measured and the calculation results indicate the thermal efficient achieves 85.4% when the temperature of generated air comes to about 1000 C. The running effects of the system are evaluated; the existing shorts are pointed out and the corresponding suggestions are offered.In the end, a series of proposals on further research work are put forward.