Circulating fluidized bed combustion system for a steam generator with provision for staged firing

Patent · Tue Jul 31 04:00:00 EDT 1984

OSTI ID:6220347

Strohmeyer, C Jr

The invention comprises a steam generator having a circulating fluidized bed combustion system whereby there is provision to admit air flow incrementally along the gas path to control combustion rate and firing temperature in a manner to maintain differential temperatures along the gas path. The initial portion of the gas path where combustion is initiated can be held in one temperature range as 1550/sup 0/ F. which is optimum for sulphur retention and the final portion of the combustion zone can be elevated in temperature as to 1800/sup 0/ F. to produce a greater degree of heat transfer through the gas to fluid heat exchange surface downstream of the combustion zone.

• Assignee: EDB-85-024251
• Patent Number(s): US 4462341
• OSTI ID: 6220347
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR FLOW
BOILERS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CONTROL
COMBUSTORS
CONTROL
DESIGN
ENERGY TRANSFER
FLUID FLOW
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
GAS FLOW
HEAT TRANSFER
OPTIMIZATION
OXIDATION
STEAM GENERATORS
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS