Process for reducing sulfur in coal char

Patent · Tue Jul 20 00:00:00 EDT 1976

OSTI ID:862599

Gasior, Stanley J ^[1]; Forney, Albert J ^[2]; Haynes, William P ^[1]; Kenny, Richard F ^[3]

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1. Pittsburgh, PA
2. Coraopolis, PA
3. Venetia, PA

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.

• Research Organization: BUREAU OF MINES
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3970434
• OSTI ID: 862599
• Country of Publication: United States
• Language: English

Related Subjects

process
reducing
sulfur
coal
char
gasified
presence
effective
amount
alkaline
earth
oxide
hydroxide
carbonate
yield
fraction
depleted
gases
produced
reaction
enriched
compounds
compound
remains
suitable
fuel
power
plant
combustion
reacts
portion
oxides
residual
contained
content
sulfur oxide
sulfur oxides
earth oxide
sulfur content
effective amount
alkaline earth
combustion gases
power plant
combustion gas
sulfur compounds
gases produced
earth compound
coal char
reducing sulfur
oxides produced
sulfur compound
/44/48/201/252/