Power plant with combustion in fluidised bed - having solid particles sepd. from first stage gas cleaner passed to compressed combustion air distributor

摘要

The plant burns solid fuel at a pressure above atmospheric and comprises a combustion chamber (12), a bottom (28) with mouthpiece (32) in the chamber lower part for input of combustion air to fluidise the bubbling bed (34) of particle-form material, and for combustion of the fuel. A gas turbine (22) is driven by the combustion gases from the plant, a compressor (24) compresses the combustion air, and a multi-stage gas cleaning plant (14) incorporates several groups of gas cleaners (16, 18) arranged in series. In the first cleaning stage, gas cleaners have their particle material outlet connected to the combustion chamber for re-circulation of sepd. material. They are also connected to a pressure reducing feed-out device and a collection container for sepd. material. The bottom of the combustion chamber is provided with an air chamber divided into upper (52) and lower (54) parts by a perforated horizontal intermediary wall (56) through which particle-free combustion air passes from the lower part to the upper part. @(Provisional basic advised week 90/23)@ @(9pp Dwg.No.1/1)@.