Process for reducing sulfur in coal char. [3 claims]

Patent · Tue Jul 20 04:00:00 EDT 1976

OSTI ID:7314569

Gasior, S J; Forney, A J; Haynes, W P; Kenny, R F

Coal is gasified in the presence of a small but effective amount of alkaline earth oxide, hydroxide, or carbonate to yield a char fraction depleted in sulfur. Gases produced during the reaction are enriched in sulfur compounds and the alkaline earth compound remains in the char fraction as an alkaline earth oxide. The char is suitable for fuel use, as in a power plant, and during combustion of the char the alkaline earth oxide reacts with at least a portion of the sulfur oxides produced from the residual sulfur contained in the char to further lower the sulfur content of the combustion gases. 3 claims.

• Assignee: Energy Research and Development Administration
• Patent Number(s): US 3970434
• OSTI ID: 7314569
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404* -- Coal
Lignite
& Peat-- Gasification
014000 -- Coal
Lignite
& Peat-- Combustion
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATE ROCKS
CARBONATES
CHARS
CHEMICAL REACTIONS
COAL GASIFICATION
COMBUSTION
DESULFURIZATION
DOLOMITE
ELEMENTS
GASIFICATION
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
NONMETALS
OXIDATION
OXYGEN COMPOUNDS
PRODUCTION
REMOVAL
RESERVOIR ROCK
ROCKS
SULFUR
THERMOCHEMICAL PROCESSES