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Title: Apparatus and method for improving electrostatic precipitator performance by plasma reactor conversion of SO.sub.2 to SO.sub.3

Abstract

An apparatus and process that utilize a low temperature nonequilibrium plasma reactor, for improving the particulate removal efficiency of an electrostatic precipitator (ESP) are disclosed. A portion of the flue gas, that contains a low level of SO.sub.2 O.sub.2 H.sub.2 O, and particulate matter, is passed through a low temperature plasma reactor, which defines a plasma volume, thereby oxidizing a portion of the SO.sub.2 present in the flue gas into SO.sub.3. An SO.sub.2 rich flue gas is thereby generated. The SO.sub.3 rich flue gas is then returned to the primary flow of the flue gas in the exhaust treatment system prior to the ESP. This allows the SO.sub.3 to react with water to form H.sub.2 SO.sub.4 that is in turn is absorbed by fly ash in the gas stream in order to improve the removal efficiency of the EPS.

Inventors:
 [1];  [2]
  1. (Darien, IL)
  2. (Woodridge, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
872643
Patent Number(s):
5980610
Assignee:
United States of America as represented by United States (Washington, DC) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; method; improving; electrostatic; precipitator; performance; plasma; reactor; conversion; process; utilize; temperature; nonequilibrium; particulate; removal; efficiency; esp; disclosed; portion; flue; gas; contains; level; matter; passed; defines; volume; oxidizing; rich; generated; returned; primary; flow; exhaust; treatment; prior; allows; react; water; form; absorbed; fly; ash; stream; improve; particulate removal; particulate matter; fly ash; gas stream; flue gas; plasma reactor; plasma volume; removal efficiency; electrostatic precipitator; temperature plasma; equilibrium plasma; /95/96/110/422/

Citation Formats

Huang, Hann-Sheng, and Gorski, Anthony J. Apparatus and method for improving electrostatic precipitator performance by plasma reactor conversion of SO.sub.2 to SO.sub.3. United States: N. p., 1999. Web.
Huang, Hann-Sheng, & Gorski, Anthony J. Apparatus and method for improving electrostatic precipitator performance by plasma reactor conversion of SO.sub.2 to SO.sub.3. United States.
Huang, Hann-Sheng, and Gorski, Anthony J. Fri . "Apparatus and method for improving electrostatic precipitator performance by plasma reactor conversion of SO.sub.2 to SO.sub.3". United States. https://www.osti.gov/servlets/purl/872643.
@article{osti_872643,
title = {Apparatus and method for improving electrostatic precipitator performance by plasma reactor conversion of SO.sub.2 to SO.sub.3},
author = {Huang, Hann-Sheng and Gorski, Anthony J.},
abstractNote = {An apparatus and process that utilize a low temperature nonequilibrium plasma reactor, for improving the particulate removal efficiency of an electrostatic precipitator (ESP) are disclosed. A portion of the flue gas, that contains a low level of SO.sub.2 O.sub.2 H.sub.2 O, and particulate matter, is passed through a low temperature plasma reactor, which defines a plasma volume, thereby oxidizing a portion of the SO.sub.2 present in the flue gas into SO.sub.3. An SO.sub.2 rich flue gas is thereby generated. The SO.sub.3 rich flue gas is then returned to the primary flow of the flue gas in the exhaust treatment system prior to the ESP. This allows the SO.sub.3 to react with water to form H.sub.2 SO.sub.4 that is in turn is absorbed by fly ash in the gas stream in order to improve the removal efficiency of the EPS.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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