Apparatus and method for gaseous emissions treatment with enhanced catalyst distribution
First Claim
1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of cells for the passage of emissions gas, the cells having internal walls, respective metal wires located in each of a first set of the plurality of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby inductively to heat the metal wires and thereby to heat the substrate body, the metal wires and the internal walls of the cells within which the metal wires are contained having catalyst material at surfaces thereof for use in treating emissions gas passing through the cells.
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Abstract
An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field for inductive heating of the assembly including gaseous emissions passing along the cells. Within the cells, parts of the cell walls and parts of the wire surfaces are exposed to the passage of the gaseous emissions and both the cell wall parts and the wire surface parts have pollution treating catalyst at their surfaces.
6 Citations
19 Claims
- 1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of cells for the passage of emissions gas, the cells having internal walls, respective metal wires located in each of a first set of the plurality of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby inductively to heat the metal wires and thereby to heat the substrate body, the metal wires and the internal walls of the cells within which the metal wires are contained having catalyst material at surfaces thereof for use in treating emissions gas passing through the cells.
- 17. A process for treating gaseous emissions using an assembly comprising an induction heating coil mounted adjacent a substrate body, the substrate body having a plurality of cells for the passage of emissions gas, the cells having internal walls, and respective metal wires located in each of a first set of the plurality of cells, the metal wires and the internal walls of the cells within which the wires are contained having a catalyst material at surfaces thereof, the method comprising generating a varying electromagnetic field at the coil thereby to cause induction heating of the metal wires, and thereby to heat the substrate body, and treating gaseous emissions with the catalyst material.
Specification