Monolith coating apparatus and method therefor
AssigneeJohnson Matthey Public Limited Company
InventorsDirk Aderhold, Alan George Haynes, Michael Leonard William Spencer, Duncan John William Winterborn
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Abstract
Apparatus for coating a support such as a monolithic catalyst support (5) comprises a dispenser (1) for dispensing a predetermined quantity of coating liquid, a containment (2) for the liquid and a source of vacuum (8, 9) which can be actuated to draw the entire quantity of coating liquid into the support (5). The apparatus and method are particularly useful for coating car catalysts without wastage and with increased design options.
Claims13
A monolithic support coating apparatus, comprising means for dosing a pre-determined quantity of a liquid component such quantity being such that it is substantially wholly retained within the intended support, liquid component containment means locatable on the top of a support to receive said quantity of liquid component, and pressure means capable of withdrawing the liquid component from the containment means into at least a portion of the support.
Apparatus according to any one of the preceding claims, wherein the containment means is shaped to cause differential coating of parts of the support.
Apparatus according to any one of the preceding claims, wherein the pressure means comprises a source of vacuum acting on the bottom of the support.
Apparatus according to any one of the preceding claims, comprising sealing means for sealing against undesired leakage or coating during withdrawal of liquid into the suuport.
A method of coating a monolithic support, comprising the steps of (a) locating a containment means on top of a support, (b) dosing a pre-determined quantity of a liquid component into said containment means, either in the order (a) then (b) or (b) then (a), and (c) by applying pressure or vacuum, drawing said liquid component into at least a portion of the support, and retaining substantially all of said quantity within the support.
Dependencies are inferred from the claim text.