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

Huang, Hann-Sheng; Gorski, Anthony J

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:

Huang, Hann-Sheng ^[1]; Gorski, Anthony J ^[2]

Darien, IL
Woodridge, IL

Issue Date:: 1999-01-01

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

OSTI Identifier:: 872643

Patent Number(s):: 5980610

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D53/32 - by electrical effects other than those provided for in group B01D61/00

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
B03C3/013 - Conditioning by chemical additives, e.g. with SO3

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C01B17/74 - Preparation

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/129 - Energy recovery

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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.

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                    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.

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                    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.

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@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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Works referenced in this record:

Plasma-assisted cleanup of flue gas. Technical report, 1 December 1993--28 February 1994
report, June 1994

Dhali, S. K.
https://doi.org/10.2172/10158576

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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

Citation Formats

Plasma-assisted cleanup of flue gas. Technical report, 1 December 1993--28 February 1994 report, June 1994

Plasma-assisted cleanup of flue gas. Technical report, 1 December 1993--28 February 1994
report, June 1994