Coal fired power plant with pollution control and useful byproducts

Patent · Tue Apr 17 00:00:00 EDT 1990

OSTI ID:6755961

Marten, J H; Lloyd, G M

This patent describes a coal fired power plant. It comprises: coal gasification means for heating coal in the presence of an oxidant-lean atmosphere under partial coal-gasifying conditions; means for separating sulfur-containing compounds from the crude gas stream; means for converting the sulfur compound containing stream into elemental sulfur; energy-conversion means for burning a portion of the combustible gas stream and a portion of the carbonaceous char; flue gas desulfurization means for contacting the SO{sub 2}-containing flue gas with lime and limestone; gypsum desulfurization means for heating the gypsum and the remaining portion of carbonaceous char under reducing conditions utilizing burning of the remaining portion of the combustible gas stream; means for recycling the SO{sub 2}-containing gas stream to the coal gasification means.

• Assignee: Florida Inst. of Phosphate Research, Lakeland, FL (USA)
• Patent Number(s): US 4917024; A
• Application Number: PPN: US 7-356754A
• OSTI ID: 6755961
• Resource Relation: Patent File Date: 24 May 1989
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
FLUE GAS
DESULFURIZATION
FOSSIL-FUEL POWER PLANTS
COAL GASIFICATION
AIR POLLUTION CONTROL
GYPSUM
RECYCLING
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHEMICAL REACTIONS
CONTROL
GASEOUS WASTES
GASIFICATION
MINERALS
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)