公开(公告)号：EP3015670A4

公开(公告)日：2017-03-08

申请号：EP13888140

申请日：2013-12-06

申请人： DOOSAN ENGINE CO LTD

发明人： LEE JAE MOON ,  KIM SANG JIN ,  RYU CHANG SEONG ,  LEE CHANG HEE ,  LEE GYUN

IPC分类号： F01N3/28 ,  B01D53/94 ,  B01D53/96 ,  F01N3/20

CPC分类号： F01N3/206 ,  B01D53/9409 ,  B01D53/9495 ,  B01D53/96 ,  B01D2251/2067 ,  B01D2258/012 ,  F01N3/2053 ,  F01N3/2073 ,  F01N3/208 ,  F01N3/2892 ,  F01N2240/25 ,  F01N2240/40 ,  F01N2260/04 ,  F01N2410/04 ,  F01N2410/12 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/085 ,  F01N2610/10 ,  F01N2610/146 ,  Y02T10/24

摘要： An exemplary embodiment of the present disclosure relates to a selective catalytic reduction and catalytic regeneration system, and the selective catalytic reduction and catalytic regeneration system includes: a main exhaust flow path along which exhaust gas containing nitrogen oxide moves; a reactor which is installed on the main exhaust flow path and includes a catalyst for reducing nitrogen oxide in the exhaust gas; a bypass exhaust flow path which branches off from the main exhaust flow path, bypasses the reactor, and merges with the main exhaust flow path again; an ammonia injection unit which is installed on the main exhaust flow path, and injects ammonia to the exhaust gas which is to flow into the reactor; a hydrolysis chamber which is supplied with urea, and produces ammonia to be supplied to the ammonia injection unit; an ammonia supply flow path which connects the ammonia injection unit with the hydrolysis chamber; a branch flow path which branches off from the main exhaust flow path at a front side of the reactor; a recirculation flow path which branches off from the main exhaust flow path at a rear side of the reactor, and merges with the branch flow path; and a multifunctional flow path which connects the hydrolysis chamber with a point where the branch flow path and the recirculation flow path merge together.

摘要翻译： 本公开的示例性实施方案涉及选择性催化还原和催化再生系统，并且选择性催化还原和催化再生系统包括：主排气流路，含有氮氧化物的废气沿着该主排气流动; 反应器，其安装在主排气流路上并且包括用于还原废气中的氮氧化物的催化剂; 从主排气流路分支的旁通排气流路，旁路反应器，再次与主排气流路并流; 氨喷射单元，其安装在主排气流路上，并向要流入反应器的废气喷射氨; 提供尿素的水解室，并产生供给氨注入单元的氨; 将氨注入单元与水解室连接的氨供给流路; 在反应器的前侧从主排气流路分支的分支流路; 在反应器的后侧从主排气流路分支的再循环流路，与分支流路合流; 以及将水解室与分支流路和再循环流路合流的点连接的多功能流路。

公开(公告)号：EP3015669A4

公开(公告)日：2017-02-22

申请号：EP13888429

申请日：2013-12-06

申请人： DOOSAN ENGINE CO LTD

发明人： LEE JAE MOON ,  KIM SANG JIN ,  CHOI JONG TAE ,  LEE CHANG HEE

IPC分类号： F01N3/24 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28

CPC分类号： B01D53/9431 ,  B01D2251/2067 ,  F01N3/2033 ,  F01N3/2066 ,  F01N3/208 ,  F01N2240/14 ,  F01N2240/20 ,  F01N2610/02 ,  F01N2610/1453 ,  Y02T10/24 ,  Y02T10/26

摘要： The present disclosure relates to a reducing agent pyrolysis system for a selective catalytic reduction apparatus. The reducing agent pyrolysis system for a selective catalytic reduction apparatus according to the present disclosure includes: an elbow duct 10 which is installed on an exhaust duct at a front end of a reactor, allows exhaust gas to flow into the elbow duct 10, and allows the inflow exhaust gas to be discharged toward the reactor; an inner pipe unit 20 which is disposed in the elbow duct 10, and allows a part of the exhaust gas to flow into and be discharged from the inner pipe unit 20; a heating device 60 which is installed in the inner pipe unit 20, and heats the exhaust gas flowing into the inner pipe unit 20; and a nozzle 70 which is installed in the inner pipe unit 20, and disposed at a rear end of the heating device 60 based on a flow of the exhaust gas, and injects a reducing agent into the inner pipe unit 20.