Desulfurized gas production from vertical kiln pyrolysis
First Claim
1. A process for eliminating sulfur contaminants from the combustible gas produced from a pyrolysis of an oil shale containing calcium or magnesium carbonate calcinable to a sufficient quantity of calcium or magnesium oxides to react with all sulfur compositions present in the gas, with the pyrolysis being conducted at least above about 900°
- F, which comprises passing a produced gas from an oil shale pyrolysis through a column of hot retorted oil shale which contains at least partially decomposed calcium or magnesium carbonate, said retorted shale being sufficiently hot so that the produced gas may be withdrawn at a temperature in excess of at least 700°
F and be essentially free of sulfur contaminants.
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Accused Products
Abstract
A gas, formed as a product of a pyrolysis of oil shale, is passed through hot, retorted shale (containing at least partially decomposed calcium or magnesium carbonate) to essentially eliminate sulfur contaminants in the gas. Specifically, a single chambered pyrolysis vessel, having a pyrolysis zone and a retorted shale gas into the bottom of the retorted shale zone and cleaned product gas is withdrawn as hot product gas near the top of such zone.
13 Citations
11 Claims
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1. A process for eliminating sulfur contaminants from the combustible gas produced from a pyrolysis of an oil shale containing calcium or magnesium carbonate calcinable to a sufficient quantity of calcium or magnesium oxides to react with all sulfur compositions present in the gas, with the pyrolysis being conducted at least above about 900°
- F, which comprises passing a produced gas from an oil shale pyrolysis through a column of hot retorted oil shale which contains at least partially decomposed calcium or magnesium carbonate, said retorted shale being sufficiently hot so that the produced gas may be withdrawn at a temperature in excess of at least 700°
F and be essentially free of sulfur contaminants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- F, which comprises passing a produced gas from an oil shale pyrolysis through a column of hot retorted oil shale which contains at least partially decomposed calcium or magnesium carbonate, said retorted shale being sufficiently hot so that the produced gas may be withdrawn at a temperature in excess of at least 700°
Specification