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2. 发明申请

US20130104531A1 STATIC MIXER FOR MIXING UREA AQUEOUS SOLUTION AND ENGINE EXHAUST GAS 审中-公开
标题翻译：用于混合尿素水溶液和发动机排气的静态混合器
公开(公告)号：US20130104531A1
公开(公告)日：2013-05-02
申请号：US13808759
申请日：2011-07-07
申请人： Young Jin Cho , Ji Woong Park
发明人： Young Jin Cho , Ji Woong Park
IPC分类号： F01N3/24
CPC分类号： F01N3/24 , B01F3/04049 , B01F5/0473 , B01F5/0616 , B01F5/0618 , F01N3/2066 , F01N2240/20 , F01N2610/02
摘要： The present disclosure relates to a static mixer for mixing a urea solution and engine exhaust gas. The static mixer includes: an external tube including one end portion connected to an exhaust manifold of a diesel engine, the other end portion connected to an SCR (Selective Catalytic Reduction), and a part with which a urea solution injection adaptor is provided; an internal tube installed inside the external tube so as to have a constant gap between at least a part of an outer wall surface and an inner wall surface of the external tube; and a channel unit comprising a plurality of guiding channels provided inside the internal tube in a longitudinal direction, and having an inlet portion facing a lower end portion of the urea solution injector adaptor. The present disclosure may make the exhaust gas and the urea solution before passing through the SCR pass through the inlet portion and the plurality of guiding channels of the channel unit to form fine and even mixed gas, thereby largely decreasing an amount of nitride oxide (NOx) discharged to the air by improving a catalytic reduction reaction ratio in the SCR.
摘要翻译：本公开涉及一种用于混合尿素溶液和发动机废气的静态混合器。静态混合器包括：外管，其包括连接到柴油发动机的排气歧管的一个端部，与SCR（选择性催化还原）连接的另一端部分和设置有尿素溶液注入适配器的部分; 内管，其安装在所述外管的内部，以便在外壁表面的至少一部分和所述外管的内壁表面之间具有恒定的间隙; 以及通道单元，其包括沿纵向设置在所述内管内部的多个引导通道，并且具有面向所述尿素溶液注射器适配器的下端部的入口部。本公开可以使排气和尿素溶液在通过SCR之前通过入口部分和通道单元的多个引导通道，以形成精细且均匀的混合气体，从而大大减少氮氧化物（NOx ）通过提高SCR中的催化还原反应比而排放到空气中。

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