Carbonaceous sorbent and process for the production thereof
AssigneeRwe Power Aktiengesellschaft
InventorsWolfgang Heschel, Bernd Meyer, Maik Werner, Jurgen Wirling
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Abstract
The invention concerns a carbonaceous sorbent in powder or grain form for the dry cleaning of waste gases from thermal processes. The sorbent includes carbon adsorbents from the group of activated carbon and/or brown coal cokes which are modified with sulfur and/or sulfur compounds. The sorbent is distinguished in that the specific surface area of the carbon adsorbents in m2/g in relation to the pore volume of the micropores in cm3/g is between 2400 and 2700.
Claims11
A carbonaceous sorbent in powder or grain form for the dry cleaning of waste gases from thermal processes, including carbon adsorbents from the group of activated carbon and/or brown coal cokes which are modified with sulfur and/or sulfur compounds, characterised in that the quotient (index H) of specific surface area of the carbon adsorbents in m2/g and the pore volume of the micropores in cm3/g is between 2400 and 2700.
A process for the production of a carbonaceous sorbent for dry waste gas cleaning including the impregnation of carbons from the group of activated carbons and/or brown coals with an aqueous sulfur-bearing solution characterised in that the sulfur-bearing solution is added with agitation of the carbons in a closed mixing container under an increased pressure or a reduced pressure.
Dependencies are inferred from the claim text.