Gas purification
OwnerHeinz Holter, Heinz Gresch +1inventors
InventorsHeinz Holter, Heinz Gresch, Heinrich Igelbuscher
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Abstract
Pulverent solid sorption agent is injected into and, optionally, admixed with a stream of noxious-contaminant-containing gas and then separated from such gas. The solid sorption agent comprises an alkali-metal and/or alkaline-earth-metal compound and advantageously contains iron-III-oxide; such agent is preferably in the form of dust developed during production of iron or steel.
Claims14
A combination of (a) an absorption agent and (b) carrier, wherein the absorption agent comprises dust developed during iron or steel production and contains Fe.sub.2 O.sub.3 in combination with a member selected from the group consisting of an alkali-metal oxide and an alkaline-earth-metal oxide and wherein the carrier is expanded perlite.
A process for removing contaminants from contaminated gas which comprises:
- (a) introducing into and thus contacting a current of the contaminated gas with a combination of
- (1) a solid-form absorption agent comprising dust developed during iron or steel production and containing Fe.sub.2 O.sub.3 in combination with a member selected from the group consisting of an alkali-metal oxide and an alkaline-earth-metal oxide and
- (2) expanded-perlite carrier,
- (b) intimately admixing the absorption agent with the gas, and then
- (c) separating the absorption agent from the gas.
Dependencies are inferred from the claim text.