Method of introducing dry sulfur oxide absorbent material into a furnace

Patent · Tue Apr 07 04:00:00 EDT 1987

OSTI ID:6625970

Winship, R D

This patent describes a fossil fuel-fired steam generator comprising: a vertically elongated furnace with a gas outlet, steam generating tubes lining the walls of the furnace; fuel injection ports located in a lower region of the furnace remote from the gas outlet thereof; windbox means associated with the fuel injection ports for supplying combustion air to the furnace; and a gas exit duct opening to the gas outlet of the furnace for conveying gases therefrom. A method is described of firing the furnace comprising: a. combusting a sulfur-bearing fuel in a first quantity of air in a first zone in the lower region of the furnace remote from the gas outlet thereof to generate hot product gases; b. dispersing a sulfur oxide absorbing particulate material in a second quantity of air; c. injecting the sulfur oxide absorbing particulate material dispersed in a second quantity of air into the product gases in a second zone in an upper region of the furnace between the first zone and the gas outlet of the furnace at at least a first and second elevation within the second zone through air streams introduced at each elevation; and d. directing the sulfur oxide absorbing particulate material containing air streams introduced at the first elevation tangentially to a first imaginary circle within the second zone.

• Assignee: Combustion Engineering, Inc., Windsor, CT
• Patent Number(s): US 4655148
• OSTI ID: 6625970
• 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
ADSORBENTS
ADSORPTION
AIR POLLUTION CONTROL
BOILERS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DESULFURIZATION
ENERGY SOURCES
EXHAUST SYSTEMS
FLUE GAS
FOSSIL FUELS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
FURNACES
GASEOUS WASTES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION CONTROL
SORPTION
STEAM GENERATORS
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
WASTES