Process for coating the phlox channels in a monolithic catalyst conductor with a coating dispersion

摘要

Invention Patent: B "PROCESS TO COVER THE FLOW CHANNELS OF A MONOLITHIC CATALYST CONDUCTOR WITH A COATING DISPERSION" D. The invention relates to a process for coating the flow channels in a cylindrically formed monolithic catalyst conductor with a coating dispersion, in which the conductor has two end faces that are connected to each other by flow channels arranged parallel to the axis of the cylinder, by vertically aligning the shaft of the cylindrical conductor, placing a predetermined amount of dispersion of the coating of a storage container on the face of the upper end of the conductor and pulling the dispersion through the flow channels under suction, removing excess dispersion of coating the flow channels by emptying the flow channels under suction, returning excess dispersion to the storage container and fixing the dispersion coating by calcination. The process is characterized by the fact that the coating dispersion is pulled through the flow channels under suction at a flow rate of 0.1 to 1 m / s and that after the completion of the suction passage, the excess coating dispersion is removed from the flow channels by applying a suction impulse from below in which the suction air is drawn through the flow channels under suction at a flow rate between 40 and 1 m / s and the excess of the dispersion of coating discharged with the air stream is separated from the air stream within a time of less than 100 ms after the discharge of the catalyst conductor.