Title:
【発明の名称】流動床燃焼室中のガス流の混合制御方法および装置
Document Type and Number:
Japanese Patent JPH02504547
Kind Code:
A
Abstract:
PCT No. PCT/FI87/00102 Sec. 371 Date Mar. 27, 1990 Sec. 102(e) Date Mar. 27, 1990 PCT Filed Aug. 6, 1987 PCT Pub. No. WO89/01115 PCT Pub. Date Feb. 9, 1989.The invention relates to a method and a nozzle bottom for controlling the mixing of gaseous flows in fluidized bed reactors and circulating fluidized bed reactors. In the method, part of the combustion air is introduced into a reactor chamber through fluidizing nozzles (11) positioned in a nozzle bottom (4). In order to improve the controllability of a combustion process, the remaining part of the combustion air is according to the invention introduced through essentially vertically directed jet nozzles (12) positioned in the nozzles bottom (4), and the vertical penetration of the air jets applied through the jet nozzles (12) is maintained at a value essentially higher than the vertical penetration of the air jets applied through the fluidizing nozzles (11). The nozzle bottom (4) according to the invention thus comprises, in addition to the fluidizing nozzles (11), essentially vertically directed jet nozzles (12) the diameter of which is larger, preferably 5 to 20 times larger than the diameter of the fluidizing nozzles (11) and the number of which is essentially smaller than the number of the fluidizing nozzles (11).
Inventors:
Ruottu, Seppo
Application Number:
JP50488987A
Publication Date:
December 20, 1990
Filing Date:
August 06, 1987
Export Citation:
Assignee:
Ainco O W
International Classes:
B01J8/24; B01J8/44; F23C10/20; F23C10/18; F23C10/28; (IPC1-7): B01J8/24; F23C11/02
Domestic Patent References:
| JP60071809B | ||||
| JPS4740523A |
Attorney, Agent or Firm:
Tadashi Hagino (3 outside)