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Title: Flue gas conditioning today

Abstract

Many relatively small electrostatic precipitators (ESP`s) exist which collect fly ash at remarkably high efficiencies and have been tested consistently at correspondingly high migration velocities. But the majority of the world`s coal supplies produce ashes which are collected at much lower migration velocities for a given efficiency and therefore require correspondingly large specific collection areas to achieve acceptable results. Early trials of flue gas conditioning (FGC) showed benefits in maximizing ESP performance and minimizing expense which justified continued experimentation. Trials of several dozen ways of doing it wrong eventually developed a set of reliable rules for doing it right. One result is that the use of sulfur trioxide (SO{sub 3}) for adjustment of the resistivity of fly ash from low sulfur coal has been widely applied and has become an automatically accepted part of the option of burning low sulfur coal for compliance with the Clean Air Act of l990 in the U.S.A. Currently, over 100,000 MW of generating capacity is using FGC, and it is estimated that approximately 45,800 MW will utilize coal-switching with FGC for Clean Air Act emission compliance. Guarantees that this equipment will be available to operate at least 98 percent of the time it ismore » called upon are routinely fulfilled.« less

Authors:
;  [1]
  1. Wahlco Engineering International Ltd., Santa Ana, CA (United States)
Publication Date:
Research Org.:
North Dakota Univ., Grand Forks, ND (United States)
OSTI Identifier:
374581
Report Number(s):
DOE/MC/30097-5161-Pt.2; CONF-9410458-Pt.2
ON: DE96011553; TRN: 96:004422-0007
Resource Type:
Conference
Resource Relation:
Conference: 2. international conference on energy and environment: transitions in East Central Europe, Prague (Czech Republic), 31 Oct - 1 Nov 1994; Other Information: PBD: Dec 1995; Related Information: Is Part Of Advanced power assessment for Czech lignite, Task 3.6, Part 2; Sondreal, E.A.; Mann, M.D.; Weber, G.W.; Young, B.C.; PB: 774 p.
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; FLUE GAS; AIR POLLUTION CONTROL; ELECTROSTATIC PRECIPITATORS; PERFORMANCE; FLY ASH; FOSSIL-FUEL POWER PLANTS; POLLUTION CONTROL EQUIPMENT; CAPACITY; SULFUR TRIOXIDE; COAL; FABRIC FILTERS

Citation Formats

Southam, B.J., and Coe, E.L. Jr. Flue gas conditioning today. United States: N. p., 1995. Web.
Southam, B.J., & Coe, E.L. Jr. Flue gas conditioning today. United States.
Southam, B.J., and Coe, E.L. Jr. Fri . "Flue gas conditioning today". United States. https://www.osti.gov/servlets/purl/374581.
@article{osti_374581,
title = {Flue gas conditioning today},
author = {Southam, B.J. and Coe, E.L. Jr.},
abstractNote = {Many relatively small electrostatic precipitators (ESP`s) exist which collect fly ash at remarkably high efficiencies and have been tested consistently at correspondingly high migration velocities. But the majority of the world`s coal supplies produce ashes which are collected at much lower migration velocities for a given efficiency and therefore require correspondingly large specific collection areas to achieve acceptable results. Early trials of flue gas conditioning (FGC) showed benefits in maximizing ESP performance and minimizing expense which justified continued experimentation. Trials of several dozen ways of doing it wrong eventually developed a set of reliable rules for doing it right. One result is that the use of sulfur trioxide (SO{sub 3}) for adjustment of the resistivity of fly ash from low sulfur coal has been widely applied and has become an automatically accepted part of the option of burning low sulfur coal for compliance with the Clean Air Act of l990 in the U.S.A. Currently, over 100,000 MW of generating capacity is using FGC, and it is estimated that approximately 45,800 MW will utilize coal-switching with FGC for Clean Air Act emission compliance. Guarantees that this equipment will be available to operate at least 98 percent of the time it is called upon are routinely fulfilled.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 1995},
month = {Fri Dec 01 00:00:00 EST 1995}
}

Conference:
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