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1. (WO2015046666) SELECTIVE CATALYTIC REDUCTION SYSTEM AND SELECTIVE CATALYTIC REDUCTION METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/046666 International Application No.: PCT/KR2013/011296
Publication Date: 02.04.2015 International Filing Date: 06.12.2013
IPC:
F01N 3/20 (2006.01) ,F01N 3/28 (2006.01) ,B01D 53/94 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
18
characterised by methods of operation; Regulation
20
specially adapted for catalytic conversion
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
24
characterised by constructional aspects of converting apparatus
28
Construction of catalytic reactors
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
Applicants:
두산엔진주식회사 DOOSAN ENGINE CO., LTD. [KR/KR]; 경상남도 창원시 성산구 신촌동 69-3 69-3 Sinchon-dong Seongsan-gu, Changwon-si Gyeongsangnam-do 642-370, KR
Inventors:
이균 LEE, Gyun; KR
이재문 LEE, Jae Moon; KR
이창희 LEE, Chang Hee; KR
최낙원 CHOI, Nak Won; KR
Agent:
특허법인 한벗 HANBEOT PATENT & LAW FIRM; 서울시 서대문구 충정로 7 구세군빌딩 15층 15th Fl. Salvation Army Bldg. 7, Chungjeong-ro, Seodaemun-gu Seoul 120-013, KR
Priority Data:
10-2013-011587330.09.2013KR
Title (EN) SELECTIVE CATALYTIC REDUCTION SYSTEM AND SELECTIVE CATALYTIC REDUCTION METHOD
(FR) SYSTÈME ET PROCÉDÉ DE RÉDUCTION CATALYTIQUE SÉLECTIVE
(KO) 선택적 촉매 환원 시스템 및 선택적 촉매 환원 방법
Abstract:
(EN) An embodiment of the present invention relates to a selective catalytic reduction system. The selective catalytic reduction system comprises: a main exhaust flow path in which an exhaust gas containing a nitrogen oxide moves; a reactor installed in the main flow path and including a catalyst for reducing the nitrogen oxide contained in the exhaust gas; a urea decomposition chamber for decomposing urea and generating ammonia; an ammonia injection part for injecting the ammonia generated from the urea decomposition chamber into the exhaust gas to be introduced into the reactor; a urea direct injection part for directly injecting the urea into the exhaust gas to be introduced into the reactor; a urea supply part for supplying urea to the urea decomposition chamber or supplying urea to the urea direct injection part; a diverging flow path which diverges from the main exhaust flow path in the front of the reactor and is connected to the urea decomposition chamber; a blower, installed in the diverging flow path, for adjusting the flow rate of the exhaust gas flowing in the diverging flow path; a heater, installed in the diverging flow path, for adjusting the temperature of the exhaust gas flowing in the diverging flow path; and a controller for controlling the blower, the heater and the urea supply part.
(FR) Selon un mode de réalisation, la présente invention porte sur un système de réduction catalytique sélective. Le système de réduction catalytique sélective comporte : un trajet d'écoulement d'échappement principal, dans lequel se déplace un gaz d'échappement contenant un oxyde d'azote ; un réacteur installé dans le trajet d'écoulement principal et comprenant un catalyseur pour réduire l'oxyde d'azote contenu dans le gaz d'échappement ; une chambre de décomposition d'urée pour décomposer de l'urée et générer de l'ammoniac ; une partie d'injection d'ammoniac pour injecter l'ammoniac généré dans la chambre de décomposition d'urée dans le gaz d'échappement devant être introduit dans le réacteur ; une partie d'injection directe d'urée pour injecter directement l'urée dans le gaz d'échappement devant être introduit dans le réacteur ; une partie d'alimentation en urée pour fournir de l'urée à la chambre de décomposition d'urée ou à la partie d'injection directe d'urée ; un trajet d'écoulement divergent qui diverge du trajet d'écoulement d'échappement principal à l'avant du réacteur et qui est relié à le chambre de décomposition d'urée ; une soufflante, installée dans la trajet d'écoulement divergent, pour régler le débit d'écoulement du gaz d'échappement s'écoulant dans le trajet d'écoulement divergent ; un élément chauffant, installé dans le trajet d'écoulement divergent, pour régler la température du gaz d'échappement s'écoulant dans le trajet d'écoulement divergent ; un dispositif de commande pour commander la soufflante, l'élément chauffant et la partie d'alimentation en urée.
(KO) 본 발명의 실시예는 선택적 촉매 환원 시스템에 관한 것으로, 선택적 촉매 환원 시스템은 질소산화물을 함유한 배기 가스가 이동하는 메인 배기 유로, 상기 메인 배기 유로 상에 설치되어 배기 가스가 함유한 질소산화물을 저감시키기 위한 촉매를 포함하는 반응기, 우레아를 분해하여 암모니아를 생성하는 우레아 분해 챔버, 상기 우레아 분해 챔버에서 생성된 암모니아를 상기 반응기에 유입될 배기 가스에 분사하는 암모니아 분사부, 상기 반응기에 유입될 배기 가스에 우레아를 직분사하는 우레아 직분사부, 상기 우레아 분해 챔버에 우레아를 공급하거나 상기 우레아 직분사부에 우레아를 공급하는 우레아 공급부, 상기 반응기 전방의 상기 메인 배기 유로에서 분기되어 상기 우레아 분해 챔버와 연결된 분기 유로, 상기 분기 유로 상에 설치되어 상기 분기 유로를 흐르는 배기 가스의 유량을 조절하는 블로워, 상기 분기 유로 상에 설치되어 상기 분기 유로를 흐르는 배기 가스의 온도를 조절하는 가열 장치, 및 상기 블로워와 상기 가열 장치 그리고 상기 우레아 공급부를 제어하는 제어부를 포함한다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)