Pollution control and heat recovery

Patent · Tue Jun 30 04:00:00 EDT 1987

OSTI ID:6283342

Johnson, A F

This patent describes the process for regenerating heat and avoiding pollution from fossil fuel flue gases comprising: cooling the flue gases to below about 400/sup 0/F by heat exchange with preheated combustion air; further cooling the gases, condensing moisture and removing particulate by (a) contacting the gases with a massive bed of sized, acid-resistant aggregate including myriad tortuous paths; (b) the paths aiding smog formation with fine particulates as nuclei; (c) forming a film of condensing moisture on the aggregate, the film absorbing sulphur dioxide from the gases; (d) the bed having sufficient horizontal cross-section to reduce gas velocity, dropping substantial particulates near the top of the bed; recovering the substantial particulates; recovering fine particulates, condensate and absorbed sulphur dioxide; discharging the cleaned flue gas at a near-ambient temperature; and utilizing heat absorbed in the bed to preheat combustion air, where fuel is conserved.

• Assignee: Energy Conservation Partnership Ltd., Boulder, CO
• Patent Number(s): US 4676299
• OSTI ID: 6283342
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000 -- Engineering-- Combustion Systems
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AIR POLLUTION CONTROL
AMBIENT TEMPERATURE
BOILERS
CHALCOGENIDES
CONTROL
COOLING
ENERGY RECOVERY
ENERGY SOURCES
ENERGY TRANSFER
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HEAT RECOVERY
HEAT TRANSFER
HIGH TEMPERATURE
MOISTURE
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION CONTROL
RECOVERY
REGENERATION
SORPTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
VAPOR CONDENSATION
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES