Patent CZ-297187-B6 (CZ)
Title: Solid fuel burning boiler plant and flue gas section for such a boiler plant
Inventor: ASKOU HANS ERIK
IPC: F22B31/00
Filed: 1997-10-17
Abstract: In the present invention, there is disclosed a solid fuel boiler plant burning solid fuel such as wood, straw, coal and sludge, said plant comprising a boiler, which comprises a combustion section (5) extending from a lower part of the boiler upward to an upper part of the boiler, said combustion section (5) being provided with pipes (22), which form lateral walls (1 2, 3, 4) including a first lateral wall (1) and a second lateral wall (2) of the combustion section (5), said boiler also comprising a flue gas section (6) extending in parallel with the combustion section (5) from the upper part of the boiler downward to the lower part of the boiler and being provided with pipes (22), which form lateral walls (11, 12, 13, 14), including a second lateral wall (12) of the flue gas section (6), said boiler further comprising a primary fuel inlet device, which is arranged at a lower part of the combustion section (5), and wherein an opening (26) from the primary fuel inlet device to the combustion section (5) is placed in a first lateral wall (1), alternatively a bottom, of the combustion section (5), characterized in that the second lateral wall (2) of the combustion section (5) is adjacent to the first lateral wall (1) of the combustion section (5), the primary fuel inlet device being arranged in said first lateral wall (1), that the second lateral wall (12) of the flue gas section (6) coincides with the second lateral wall (2) of the combustion section (5), that a first passage (15) forming outlet from the combustion section (5) into the flue gas section (6) is positioned in the second lateral wall (2) of the combustion section (5), that the first passage (15) forming inlet into the flue gas section (6) from the combustion section (5) is positioned in the second lateral wall (12) of the flue gas section (6), and that the flue gas section (6) comprises a second section (17) and a third section (18) wherein the second section (17) and the third section (18) are separated by a partition wall (20) extending outward from the second lateral wall (2, 12) into the flue gas section (6), said second section (17) is adapted for downward passage of the gas from the first passage (15) into a second passage (19) underneath said partition wall (20) and the third section (18) is adapted for adjacent upward passage of the gas from the second passage (19) into a gas outlet (21). The flue gas section for the solid fuel burning boiler plant of this type comprises lateral walls (11, 12, 13, 14), that are formed by pipes (22), wherein the second lateral wall (12) of the flue gas section (6) forms also a second lateral wall (12) of the combustion section (5) and is provided with a first passage (15) leading into interior of the flue gas section (6) and wherein the third lateral wall (13) is adjacent to the second lateral wall (12) and is provided with an outlet (21) from interior of the flue gas section (6). The flue gas section (6) interior comprises a partition wall (20) extending between the second lateral wall (12) a the fourth lateral wall (14) being opposite to the second lateral wall (12), and the partition wall (20) is adapted for downward passage of flue gas from the first passage (15) into the second passage (19) underneath said partition wall (20) and upward passage of the flue gas from the second passage (19) into the flue gas outlet (21).