FIELD: chemical technology.
SUBSTANCE: invention relates to the chemical technology of fuel combustion in a pseudo-boiling bed in an airless environment. A fluidized bed reactor for burning fuel in a chemical loop, containing an air reactor (1) in the form of a cylindrical column with an air inlet located in the bottom, connected to a pipeline (12), which, in turn, is connected to a cyclone (4) to separate particles from oxygen-depleted air, which is discharged through the gas pipeline (3), wherein the air reactor (1) is connected by means of a branch pipe to a chemical loop device (7) equipped with an inlet for supplying steam, and a fuel reactor (6) having an inlet for fuel supply located in the bottom and connected by means of branch pipes to a feeding device oxygen accumulator (9) and a chemical loop device (7), and the air reactor (1) and the fuel reactor (6) are placed in the furnace (2), characterized in that the fuel reactor is a quartz tube equipped with branches in the form of loop-shaped branch pipes (11) not less than 10 staggered along the entire length of the pipe, while the angle between the outer wall of the branch pipe and the outer wall of the straight section of the pipe is 15-46°, and the ratio of the length l of the pipe to the outer diameter d of the loop-shaped branch pipe (11) is l/d =85...380, and in the upper part of the fuel reactor (6) there is a cyclone (5) for separating particles of the oxygen accumulator from combustion products discharged through the gas pipeline (3), and connected through a branch pipe with a cyclone (4) for separating particles from oxygen-depleted air, and a branch pipe connecting the fuel reactor (6) and chemical loop device (7), equipped with a quartz filter (8).
EFFECT: invention provides the possibility to ensure complete combustion of the fuel by increasing the conversion of carbon monoxide CO and to reduce the dust entrainment of the ultrafine powdery material by the gas flow.
1 cl, 6 dwg
