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Title: Specification considerations for a circulating fluidized bed boiler

The circulating fluidized bed (CFB) boiler is gradually gaining acceptance in both the industrial and utility sectors for electric power generation. Boiler steaming capacity in CFBs has increased to over a million pounds per hour in the most recent units. Many CFB units commisioned during the last few years worldwide have had difficult and extended start-up periods, but this experience has provided a good base of feedback for future units. There has been widespread use of the same criteria for a conventional pulverized coal or stoker boiler to specify the CFB boiler. This paper examines the unique design aspects of a CFB boiler and provides suggestions in the areas where specific requirements should be included in the specification of the boiler and its related systems. Areas examined include fuel handling area, burner systems, the combustor, cyclone and solids recirculation equipment, convention pass, the design and installation of refractories, fans and blowers, bed ash removal system, and particulate control equipment.
Authors:
;  [1]
  1. (Bechtel Power Corp., Gaithersburg, MD (USA))
Publication Date:
OSTI Identifier:
6914190
Report Number(s):
CONF-880403--
Journal ID: ISSN 0097-2126; CODEN: PAPWA
Resource Type:
Conference
Resource Relation:
Journal Name: Proceedings of the American Power Conference; (USA); Journal Volume: 50; Conference: American power conference, Chicago, IL (USA), 18-20 Apr 1988
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 42 ENGINEERING; 01 COAL, LIGNITE, AND PEAT; COAL; FLUIDIZED-BED COMBUSTION; ELECTRIC UTILITIES; FLUIDIZED BED BOILERS; DESIGN; AIR POLLUTION CONTROL; FLY ASH; PARTICULATES; PULVERIZED FUELS; REFRACTORIES; REMOVAL; STOKERS; AEROSOL WASTES; ASHES; BOILERS; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; COMBUSTION; CONTROL; ENERGY SOURCES; FOSSIL FUELS; FUEL FEEDING SYSTEMS; FUEL SYSTEMS; FUELS; MATERIALS; OXIDATION; PARTICLES; POLLUTION CONTROL; PUBLIC UTILITIES; RESIDUES; THERMOCHEMICAL PROCESSES; WASTES 200103* -- Fossil-Fueled Power Plants-- Waste-Fueled Systems; 421000 -- Engineering-- Combustion Systems; 014000 -- Coal, Lignite, & Peat-- Combustion; 200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions