Method and aparatus for flue gas cleaning by separation and liquefaction of sulfur dioxide and carbon dioxide

Patent · Tue Jul 28 00:00:00 EDT 1992

OSTI ID:7188843

Abdelmalek, F T

This patent describes a method for recovering sulfur dioxide, carbon dioxide, and cleaning flue gases emitted from power plants. It comprises: electronically treating the flue gases to neutralize its electrostatic charges and to enhance the coagulation of its molecules and particles; exchanging sensible and latent heat of the neutralized flue gases to lower its temperature down to a temperature approaching the ambient temperature while recovering its separating the flue gas in a first stage; cooling the separated enriched carbon dioxide gas fraction, after each separation stage, while removing its vapor condensate, then compressing the enriched carbon dioxide gas fraction and simultaneously cooling the compressed gas to liquefy the sulfur dioxide gas then; allowing the sulfur dioxide gas to condense, and continuously removing the liquefied sulfur dioxide; compressing he desulfurized enriched carbon dioxide fraction to further increase its pressure, and simultaneously cooling he compressed gas to liquefy the carbon dioxide gas, then; allowing the carbon dioxide gas to condense and continuously removing the liquefied carbon dioxide; allowing the light components of the flue gas to be released in a cooling tower discharge plume.

• Assignee: NOV; NOV-92-048012; EDB-93-001331
• Patent Number(s): US 5133190; A
• Application Number: PPN: US 7-754035; TRN: 92-037539
• OSTI ID: 7188843
• Resource Relation: Patent File Date: 25 Jan 1991
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
CARBON DIOXIDE
AIR POLLUTION CONTROL
COGENERATION
FLUE GAS
DESULFURIZATION
FOSSIL-FUEL POWER PLANTS
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
SULFUR DIOXIDE
ELECTRIC POWER
ELECTRONIC EQUIPMENT
GASEOUS WASTES
SEPARATION PROCESSES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DEUS
EQUIPMENT
MANAGEMENT
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER
POWER GENERATION
POWER PLANTS
STEAM GENERATION
SULFUR COMPOUNDS
SULFUR OXIDES
THERMAL POWER PLANTS
WASTE PRODUCT UTILIZATION
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
200500 - Fossil-Fueled Power Plants- Environmental Aspects- (1990-)
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
200105 - Fossil-Fueled Power Plants- Heat Utilization