公开(公告)号：US20220388023A1

公开(公告)日：2022-12-08

申请号：US17813955

申请日：2022-07-21

申请人： Johnson Matthey Public Limited Company

发明人： Daniel MASON ,  Daniel L. TROLAND ,  Paul OBELCZ

IPC分类号： B05C5/02 ,  B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B05C11/00

摘要： A substrate coating apparatus is disclosed. The substrate coating apparatus comprises a substrate holder for holding a substrate vertically; a piston for introducing, by pushing or injecting, a liquid comprising a catalyst component into the substrate via or through open ends of the plurality of channels at a lower end of the substrate; a vacuum generator for applying a vacuum to open ends of the plurality of channels at an upper end of the substrate; and a fluid feed ring for supplying the liquid onto a face of the piston. The fluid feed ring comprises an annular body comprising an inner face bounding a central bore of the fluid feed ring; a fluid feed port for receiving the liquid; a plurality of outlet apertures on the inner face of the annular body for discharging the liquid onto the piston face; and a distribution channel extending at least part-way around the annular body which provides fluid communication between the fluid feed port and the plurality of outlet apertures.