An option for aging boilers-fluidized bed combustion
Fossil fuel fired steam generators designed and built prior to 1970 generally incorporated a particulate reduction system as the sole emission control. This is because other gaseous and solid emissions were not a significant issue during the 50s and 60s. There are several trends that these boilers and the industry have experienced since then: (1) boilers have aged and their pressure parts and auxiliary equipment condition has deteriorated; (2) increased commercial competition calls for fuel flexibility, optimum performance, reliability and maintenance; (3) solid fuel quality has been deteriorating, gas and oil market and availability are volatile; (4) environmental awareness has risen dramatically, thus requiring more stringent and more comprehensive emission requirements that the operating boilers must comply with; (5) new combustion technologies have been developed. At the same time, the existing turbine generator equipment, if reasonably maintained, is capable of providing competitive and reliable electrical power production. Different approaches can be taken to provide a new steam generating source for the existing turbine cycle retirement of old boilers and building new ones; boiler modification and switching to different fuels and technologies boiler modernization and addition of emission control equipment (such as low-NOx burner, SCR, SNCR, FGD, etc.) This paper addresses an alternative solution: conversion of conventional boilers to fluidized bed technology. Foster Wheeler Energy Corporation (FWEC), which successfully competes worldwide with the two proven technologies (conventional boilers and fluidized bed), has accumulated substantial on-site experience indicating that the fluidized-bed option can provide a significant cost/benefit advantage. This article presents several site specific examples to demonstrate a FWEC approach to the fluidized bed conversion and its advantages.
- OSTI ID:
- 405489
- Report Number(s):
- CONF-951208-; TRN: 96:004299-0008
- Resource Relation:
- Conference: Power-Gen America `95: power generation conference, Anaheim, CA (United States), 5-7 Dec 1995; Other Information: PBD: 1995; Related Information: Is Part Of Power-Gen `95. Book III: Generation trends. Volume 1 - current fossil fuel technologies. Volume 2 - advanced fossil fuel technologies. Volume 3 - gas turbine technologies I; PB: 465 p.
- Country of Publication:
- United States
- Language:
- English
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