Title (en)

PROCESS FOR THE CATALYTIC REDUCTION OF NITROGEN OXIDES.

Publication

EP 0639109 A4 19950322 (EN)

Application

EP 93910861 A 19930428

Priority

• US 9303976 W 19930428
• US 87943992 A 19920506

Abstract (en)

[origin: WO9322047A1] The present invention relates to a process for the catalytic reduction of nitrogen oxides in a combustion effluent. The inventive process generally involves treating urea under conditions effective to form a urea hydrolysate; introducing the urea hydrolysate into the effluent (50), under conditions effective to form ammonia and produce an ammonia-containing effluent; and catalytically reducing the nitrogen oxides in the effluent by passing the ammonia-containing effluent through a catalysis zone (30) comprising a catalyst effective for the reduction of nitrogen oxides in the presence of ammonia.

IPC 1-7

B01D 53/36

IPC 8 full level

B01D 53/86 (2006.01)

CPC (source: EP KR)

B01D 53/8625 (2013.01 - EP KR)

Citation (search report)

• [PX] EP 0487886 A1 19920603 - MAN TECHNOLOGIE GMBH [DE]
• [Y] WO 9202450 A1 19920220 - NALCO FUEL TECH [US]
• [PY] US 5139754 A 19920818 - LUFTGLASS BRYAN K [US], et al
• See references of WO 9322047A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9322047 A1 19931111; AU 4220593 A 19931129; CA 2135195 A1 19931111; EP 0639109 A1 19950222; EP 0639109 A4 19950322; KR 950701247 A 19950323; TW 229225 B 19940901

DOCDB simple family (application)

US 9303976 W 19930428; AU 4220593 A 19930428; CA 2135195 A 19930428; EP 93910861 A 19930428; KR 19940703976 A 19941105; TW 82102781 A 19930413