Removal of sulfur from coal and pitch with dolomite
First Claim
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1. A method for making a meltable uniform carbonaceous mixture from coal, petroleum pitch and dolomite which comprises mixing the coal particles in the range of 100-200 mesh size with petroleum pitch and sufficient dolomite to convert the sulfur content of the pitch and the coal to calcium sulfate during burning, and heating said mixture at 300-500°
- F. for ten to thirty minutes.
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Abstract
The sulfur in bituminous coal can be converted to calcium sulfate instead of sulfur dioxide during combustion when it is mixed with petroleum pitch and calcium oxide, calcium carbonate or dolomite.
12 Citations
1 Claim
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1. A method for making a meltable uniform carbonaceous mixture from coal, petroleum pitch and dolomite which comprises mixing the coal particles in the range of 100-200 mesh size with petroleum pitch and sufficient dolomite to convert the sulfur content of the pitch and the coal to calcium sulfate during burning, and heating said mixture at 300-500°
- F. for ten to thirty minutes.
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Current AssigneeLloyd Berg
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Original AssigneeLloyd Berg
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InventorsBerg, John W., Orth, John C., Berg, Lloyd
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Primary Examiner(s)Howard, Jacqueline V.
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Application NumberUS07/984,513Time in Patent Office293 DaysField of Search44/311, 44/620, 44/622US Class Current44/620CPC Class CodesC10L 9/08 by heat treatments, e.g. ca...C10L 9/10 by using additives
