EP 0460160 B1 19930414 - PROCESS FOR REDUCING NOX EMISSION DURING THE COMBUSTION OF SOLID FUELS
Title (en)
PROCESS FOR REDUCING NOX EMISSION DURING THE COMBUSTION OF SOLID FUELS
Publication
Application
Priority
DE 3943084 A 19891227
Abstract (en)
[origin: US5131335A] PCT No. PCT/DE90/00985 Sec. 371 Date Aug. 26, 1991 Sec. 102(e) Date Aug. 26, 1991 PCT Filed Dec. 21, 1990 PCT Pub. No. WO91/10097 PCT Pub. Date Jul. 11, 1991.In a process for reducing the nitric oxide emission during the combustion of solid fuels, the flue gases leaving from a main combustion zone (2) consecutively flow through two reduction zones (6,9). The first reduction zone (6) is operated hypostoichiometrically at temperatures above 1,000 DEG C. and while adding a reducing fuel, while the second reduction zone (9) is operated hyperstoichiometrically at temperatures from 950 DEG C. to 1,000 DEG C. and in the presence of nitric oxide-reducing substances.
IPC 1-7
IPC 8 full level
F23C 99/00 (2006.01); F23C 6/04 (2006.01); F23J 7/00 (2006.01)
CPC (source: EP US)
F23C 6/047 (2013.01 - EP US); F23J 7/00 (2013.01 - EP US); F23C 2201/101 (2013.01 - EP US); F23C 2201/301 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
US 5131335 A 19920721; AT E88257 T1 19930415; AU 631292 B2 19921119; AU 7038291 A 19910724; DE 3943084 A1 19910704; DE 59001211 D1 19930519; EP 0460160 A1 19911211; EP 0460160 B1 19930414; ES 2041204 T3 19931101; JP H04504899 A 19920827; WO 9110097 A1 19910711
DOCDB simple family (application)
US 75246491 A 19910826; AT 91901273 T 19901221; AU 7038291 A 19901221; DE 3943084 A 19891227; DE 59001211 T 19901221; DE 9000985 W 19901221; EP 91901273 A 19901221; ES 91901273 T 19901221; JP 50166291 A 19901221