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1. (WO2007004940) AN EXHAUST SYSTEM COMPRISING A SCR-CATALYST
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/004940 International Application No.: PCT/SE2006/000598
Publication Date: 11.01.2007 International Filing Date: 23.05.2006
IPC:
B01D 53/94 (2006.01) ,C22C 38/44 (2006.01) ,C22C 38/58 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
92
of engine exhaust gases
94
by catalytic processes
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
44
with molybdenum or tungsten
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
58
with more than 1.5% by weight of manganese
Applicants:
SANDVIK INTELLECTUAL PROPERTY AB [SE/SE]; S-811 81 Sandviken, SE (AllExceptUS)
KANGAS, Pasi [SE/SE]; SE (UsOnly)
ROSBERG, Andreas [SE/SE]; SE (UsOnly)
Inventors:
KANGAS, Pasi; SE
ROSBERG, Andreas; SE
Agent:
BJERKENS PATENTBYRÅ KB; Box 1274 S-801 37, Gävle, SE
Priority Data:
0501532-601.07.2005SE
Title (EN) AN EXHAUST SYSTEM COMPRISING A SCR-CATALYST
(FR) SYSTEME D'ECHAPPEMENT COMPRENANT UN CATALYSEUR SCR
Abstract:
(EN) The present invention relates to an exhaust system for heavy vehicles, such as trucks, industrial trucks and buses, comprising an SCR-catalyst for the utilization of urea in order to clean exhaust gases from NOx. The exhaust system is at least partly constructed from a material having the following composition in % by weight: C max 0.02 Si 0.1-0.8 Mn 0.5-3.0 P max 0.02 S max 0.010 Cr 24-26 Ni 21-23 Mo+0,5W 1.5-3.0 Cu max 0.8 Al max 0.03 B max 0.020 N 0.05-0.20 the balance Fe together with normally occurring impurities.
(FR) La présente invention concerne un système d'échappement pour véhicules lourds, tels que des camions, des chariots de manutention et des bus comprenant un catalyseur SCR pour l'utilisation d'urée en vue d'éliminer Nox des gaz d'échappement. Ce système d'échappement est, au moins partiellement, constitué d'une matière possédant la composition suivante en pourcentage pondéral : C max 0,02 ; Si 0,1-0,8 ; Mn 0,5-3,0 ; P max 0,02 ; S max 0,010 ; Cr 24-26 ; Ni 21-23 ; Mo+0,5 ; W 1,5-3,0 ; Cu max 0,8 ; Al max 0,03 ; B max 0,020 ; N 0,05-0,20 ; le reste constituant Fe avec des impuretés qui apparaissent normalement.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)