Atmospheric Fluidized Bed Combustion Technology Test Unit for Industrial Cogeneration Plants

摘要

The AFBC Technology Test Unit Program will develop the technology for a fluidized bed coal combustion system to provide a source of high temperature air for process heating and power generation with gas turbines in industrial plants. The gas turbine has the advantages of a higher ratio of electric power output to exhaust heat load and a higher exhaust temperature than do steam turbines in cogeneration applications. This type of system appears to be attractive for development, particularly for installations in the range of 5 to 50 MW(e). The conceptual design of the Technology Test Unit has been completed. The 1.8 m (6 ft)-square combustor has a bed depth of 0.6 m (2 ft) which has been designed for atmospheric pressure and 900 exp 0 C (1650 exp 0 F) to produce a heat output of about 1500 kW(t) (5 x 10 exp 6 Btu/hr). A number of furnace design firms have been invited to submit their own designs for the combustor, from which a final selection will be made. Development and testing have been conducted in the areas of fluidization, heat transfer, tube corrosion and coal feeding. New results on heat transfer, tube corrosion and coal feeding are presented in this paper. The TTU program was authorized by ERDA in June 1977, and will require about two years for design, procurement and installation followed by two years of testing. (ERA citation 03:019540)