Method of making a flame arresting and contaminant-absorbing filter apparatus
AssigneePrototech Company
InventorAmiram Bar-Ilan
Life of this patent
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Abstract
In a catalytic assembly having an oxidation catalytic unit disposed above the broiling area of a fat-food broiler for enabling the catalytic oxidation of volatile broiling smoke organic contaminants, a low pressure drop open-pore metallic flame-arresting filter screen disposed between the broiling area and the catalytic unit and substantially completely overlying the broiling area and containing upon the screen an adherent coating comprising a high surface area inorganic oxide adsorbent and an inorganic binder therefor, the coating serving to adhere salt, phosphorous and other catalyst-poisoning compounds in the broiling emissions. Preferred methods of coating and broiler flame-arresting use are described.
Claims4
A method of producing a flame-arresting filter for use in catalytic broiler smoke abatement assemblies, that comprises surface-oxidizing a stainless steel open pore screen at an elevated temperature;
- immersing the screen in a substantially electrolyte-free aqueous slurry containing an adsorbent selected from the group consisting of alumina and a zeolite adsorber and containing colloidally dispersed ceria binder;
- freeing the open pores of the screen from excess slurry;
- and heating the slurry-coated screen to cause the adsorbent coating to become stabilized and firmly bonded and adhered to the screen by the binder.
Dependencies are inferred from the claim text.