Furnace temperature control method for a fluidized bed combustion system

Patent · Tue Dec 17 04:00:00 EST 1991

OSTI ID:5571648

Abdulally, I F

This paper describes a fluidized bed combustion method. It comprises: the steps of fluidizing a bed of combustible material in a furnace at least a portion of which is formed by water tubes, passing water through the tubes to absorb heat from the combusted fuel and raise the temperature of the water, discharging a mixture of flue gases and entrained particulate material from the fluidized bed in the furnace, separating the entrained particulate material from the flue gases, passing the separated flue gases to a heat recovery section, passing the separated particulate material into the fluidized bed in the furnace, installing refractory material around the tubes to reduce the absorption of heat by the water, and selecting the amount of refractory material installed in accordance with the desired operating temperature of the furnace.

• Assignee: Foster Wheeler Energy Corp. (United States)
• Patent Number(s): US 5072696; A
• Application Number: PPN: US 7-626134
• OSTI ID: 5571648
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
421000* -- Engineering-- Combustion Systems
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DISPERSIONS
ENERGY
ENERGY RECOVERY
FLUE GAS
FLUIDIZED-BED COMBUSTION
FURNACES
GASEOUS WASTES
HEAT
HEAT RECOVERY
MIXTURES
OXIDATION
PARTICLES
PARTICULATES
RECOVERY
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
WASTE HEAT
WASTES