F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
F22B 21/06 (2006.01) F22B 31/08 (2006.01) F24H 1/40 (2006.01)
Patent
CA 2211983
In a water-tube boiler, with a view to fulfilling the reduction in NO x with a simple construction, a plurality of water tubes (5) are arranged into an annular shape in a zone where burning-reaction ongoing gas is present within a combustion chamber (9), wherein the plurality of water tubes (5) are arranged within the combustion chamber (9) so that temperature of the burning- reaction ongoing gas after making contact with the water tubes (5) will be below 1400° C, and wherein gaps (12) which permit the burning-reaction ongoing gas to flow therethrough are formed between adjacent water tubes (5). Further with a view to fulfilling the reduction in NO x and the reduction in CO at the same time with a simple construction, the water-tube boiler comprises: a first water tube array (6) formed by arranging a plurality of water tubes (5) into an annular shape in a zone where burning-reaction ongoing gas is present within a combustion chamber (9); gaps (12) provided between adjacent water tubes (5) of the first water tube array (6) so as to permit the burning-reaction ongoing gas to flow therethrough; and a zone (13) provided around the first water tube array (6) to allow burning reaction to be continuously effected, wherein the first water tube array (6) is an annular water tube array of two or more arrays, and wherein a plurality of heat-recovery water tubes (7) are arranged outside the first water tube array (6).
Kondou Kanta
Takubo Noboru
Watanabe Shigehiro
Ltd. Miura Co.
Mccarthy Tetrault Llp
Miura Co. Ltd.
Miura Institute Of Research & Development Co. Ltd.
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