Combustion efficiency: reducing acid emissions

Journal Article · Thu Oct 01 04:00:00 EDT 1981 · Mod. Ind. Energy; (United States)

OSTI ID:6198513

Kufta, R

A heat exchanger can increase efficiencies of power generating boilers and process steam boilers. It extracts heat from flue gases and heats combustion air. However, the acid dewpoint temperature can limit the quantity of heat extracted. If too much heat is recovered, the flue gas temperature falls below the dewpoint temperature, sulfuric acid deposits, and corrosion occurs. Alternatively when the flue gas temperature deliberately exceeds the dewpoint temperature, corrosion does not occur but energy efficiency falls. To operate a boiler at maximum efficiency it is essential to monitor the dewpoint temperature continuously and to keep the flue gas temperature just above the dewpoint temperature. In this way, cold-end corrosion and energy waste are avoided.

• Research Organization: Land combustion Inc., Bensalem, PA
• OSTI ID: 6198513
• Journal Information: Mod. Ind. Energy; (United States), Journal Name: Mod. Ind. Energy; (United States) Vol. 61:8; ISSN MOIED
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
BOILERS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMBUSTION
CONTROL
CORROSION PROTECTION
CORROSIVE EFFECTS
DEW POINT
EFFICIENCY
ELECTRIC POWER
ENERGY CONSERVATION
ENERGY RECOVERY
FLUE GAS
GASEOUS WASTES
HEAT EXCHANGERS
HEAT RECOVERY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MONITORING
OXIDATION
POLLUTION CONTROL
POWER
RECOVERY
SULFURIC ACID
THERMOCHEMICAL PROCESSES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
YIELDS