Search International and National Patent Collections

1. (WO2017155150) REDUCTANT MIXING DEVICE

Pub. No.:    WO/2017/155150    International Application No.:    PCT/KR2016/002871
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 23 00:59:59 CET 2016
IPC: F01N 3/20
F01N 3/28
F01N 13/08
Applicants: SEJONG IND. CO., LTD.
세종공업 주식회사
Inventors: JUNG, Jong Hwa
정종화
YANG, Jae, Uk
양재욱
Title: REDUCTANT MIXING DEVICE
Abstract:
A reductant mixing device according to the present invention comprises: a housing having an exhaust gas inflow part provided at a front end side thereof and a selective catalytic reduction catalyst provided at a rear end side thereof; a reductant injection nozzle for spraying a reductant aqueous solution between the exhaust gas inflow part and the selective catalytic reduction catalyst in an inner passage of the housing; and a swirl unit mounted between the exhaust gas inflow part and the selective catalytic reduction catalyst in the inner passage of the housing so as to guide, in a spiral shape, the flow direction of the fluid in which exhaust gas and reductant aqueous solution particles are mixed, wherein a cross sectional area of a passage of the swirl unit is formed to be smaller than a cross sectional area of the passage of the housing. If the reductant mixing device according to the present invention is used, the exhaust gas flows in a spiral shape when the reductant aqueous solution is mixed in the exhaust gas discharged from a vehicle engine, a vortex is generated while the exhaust gas flows along a spiral flow path, such that the reductant aqueous solution can be more uniformly mixed in the exhaust gas, and a mixing space having a long pipe shape is provided in a spatially compressed mixing form such that the device can be mounted even in a narrow available space.