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Title: Keeping an eye on SO{sub 3}

Abstract

Injective additives can control SO{sub 3} emissions at coal-fired power plants, but without a way to continuously monitor SO{sub 3}, it is impossible to optimize additive use. EPRI is studying technologies that can be used to monitor SO{sub 3} emissions, making it possible to lower additive use and costs. The team found that EPA Method 8 had limited accuracy and that in-situ methods would be preferable. Differential optical absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR) were considered and the latter found to be feasible for monitoring SO{sub 3} and H{sub 2}SO{sub 4}. EPRI developed a phase discrimination probe that separates the flue gas from most of the fly ash on a continual basis. The probe was field tested at Merom Station, installed in four-inch ports in the SCR outlet dust which has SO{sub 3} emissions of 25-60 ppm. The FTIR analyzer was mounted on an optical table. Results proved the FTIR spectroscopy method proved feasible. Future work will focus on installation procedures for the probe so that FTIR measurements can be conducted in a monostatic configuration. 3 figs., 1 tab.

Authors:
 [1]
  1. EPRI (United States)
Publication Date:
OSTI Identifier:
20752423
Resource Type:
Journal Article
Resource Relation:
Journal Name: Power Engineering (Barrington); Journal Volume: 110; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; SULFUR TRIOXIDE; AIR POLLUTION CONTROL; ADDITIVES; AIR POLLUTION MONITORING; EMISSION; COST; FLUE GAS; COAL; FOSSIL-FUEL POWER PLANTS; EPRI; AIR POLLUTION MONITORS; PROBES; SULFURIC ACID; DEMONSTRATION PLANTS; FOURIER TRANSFORMATION; INFRARED SPECTRA; MEASURING METHODS

Citation Formats

Himes, R. Keeping an eye on SO{sub 3}. United States: N. p., 2006. Web.
Himes, R. Keeping an eye on SO{sub 3}. United States.
Himes, R. Sat . "Keeping an eye on SO{sub 3}". United States. doi:.
@article{osti_20752423,
title = {Keeping an eye on SO{sub 3}},
author = {Himes, R.},
abstractNote = {Injective additives can control SO{sub 3} emissions at coal-fired power plants, but without a way to continuously monitor SO{sub 3}, it is impossible to optimize additive use. EPRI is studying technologies that can be used to monitor SO{sub 3} emissions, making it possible to lower additive use and costs. The team found that EPA Method 8 had limited accuracy and that in-situ methods would be preferable. Differential optical absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR) were considered and the latter found to be feasible for monitoring SO{sub 3} and H{sub 2}SO{sub 4}. EPRI developed a phase discrimination probe that separates the flue gas from most of the fly ash on a continual basis. The probe was field tested at Merom Station, installed in four-inch ports in the SCR outlet dust which has SO{sub 3} emissions of 25-60 ppm. The FTIR analyzer was mounted on an optical table. Results proved the FTIR spectroscopy method proved feasible. Future work will focus on installation procedures for the probe so that FTIR measurements can be conducted in a monostatic configuration. 3 figs., 1 tab.},
doi = {},
journal = {Power Engineering (Barrington)},
number = 4,
volume = 110,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}