Apparatus and method for cleaning sterilizer exhaust gas
An apparatus for cleaning exhaust gas. The apparatus includes a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas. At least one coalescing filter layer and a catalyst filter layer are disposed within the housing. The catalyst filter layer includes molded sintered pellets formed from a porous material and a non-precious metal catalyst. The molded sintered pellets create a porous area for coalescing oil mist, and the catalyst hydrogen peroxide.
1. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide, wherein the porous material is a polyolefin.
2. The apparatus of claim 1 , wherein the polyolefin is ultra-high molecular weight polyethylene (UHMW-PE).
3. The apparatus of claim 1 ,
wherein the non-precious metal catalyst is manganese dioxide.
4. The apparatus of claim 1 ,
wherein the non-precious metal catalyst is selected from the group consisting of lead oxide and iron oxide.
5. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide, further comprising a screening layer, wherein the screening layer is upstream of the at least one coalescing filter layer and the catalyst filter layer.
6. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide;
a screening layer, wherein the screening layer is upstream of the at least one coalescing filter layer and the catalyst filter layer;
wherein the screening layer comprises stainless steel mesh.
7. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide, wherein the at least one coalescing filter layer comprises at least one foam layer.
8. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide;
wherein the at least one coalescing filter layer comprises at least one foam layer;
wherein the at least one foam layer comprises a first foam layer disposed upstream of the catalyst filter layer and a second foam layer disposed downstream of the catalyst filter layer.
9. The apparatus of claim 8 , wherein the first and second foam layers are composed of reticulated foam.
10. The apparatus of claim 8 , wherein at least one coalescing filter layer further comprises a metal wool layer disposed between the first foam layer and the catalyst filter layer.
11. The apparatus of claim 10 , wherein the metal wool layer is composed of aluminum wool.
12. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide, wherein the housing further comprises an end cap.
13. An apparatus for cleaning exhaust gas comprising:
a housing having an upstream end configured to receive exhaust gas and a downstream end configured to release the exhaust gas;
at least one coalescing filter layer disposed within the housing;
a catalyst filter layer disposed within the housing, the catalyst filter layer comprising molded sintered porous pellets comprising a porous material and a non-precious metal catalyst, wherein the molded sintered porous pellets create a porous area for coalescing oil mist, and for decomposing hydrogen peroxide, wherein the downstream end of the housing comprises an integral exhaust grate.