Abstract: A fluidized bed combustion apparatus having an upright combustion chamber with a lower end at which a fluidized bed is formed and combustion takes place. First and second upright partitions are provided in the combustion chamber to divide the combustion chamber into a plurality of sections. The first partition divides the combustion chamber into first and second sections which are joined together by a turning space above an upper end of the first partition and the second partition is hollow and has an open, upper end in communication with the turning space to receive a portion of the combustion products therein. The lower end of the second partition is open to supply the combustion products to the fluidized bed.

Abstract: A hybrid combustion system is provided combining advantages of a fluidized bed combustion portion and a pulverized coal combustion portion. The former portion includes a fluidized bed chamber, a coal mill without an air separator, a recycling duct connected to the coal mill, a coal supply duct, and a spray feeder. The fluidized coal combustion portion includes a pulverizing coal mill with air separator, a blowing duct for blowing ground coal, at least one pulverized coal burner and an air recycling duct for recycling combustion air. Fluidized bed combustion takes place in a lower part of the system and pulverized coal combustion takes place above the fluidized bed combustion. Each of the portions may be independently operated of the other. A main combustion chamber is common to both the fluidized bed portion and the pulverized coal portion. A related process is also described.

Abstract: The invention relates to stable brown-coal/oil suspensions and a process for preparing same. The suspension contains 20 to 60% by mass of coal powder and 40 to 80% by mass of fuel oil of 25 to 70% by mass of an agglomerate and 30 to 75% by mass of fuel oil.The invention renders possible to utilize brown-coal powders of low value for heating purposes.