skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Catalytic Reactor For Oxidizing Mercury Vapor

Abstract

A catalytic reactor (10) for oxidizing elemental mercury contained in flue gas is provided. The catalyst reactor (10) comprises within a flue gas conduit a perforated corona discharge plate (30a, b) having a plurality of through openings (33) and a plurality of projecting corona discharge electrodes (31); a perforated electrode plate (40a, b, c) having a plurality of through openings (43) axially aligned with the through openings (33) of the perforated corona discharge plate (30a, b) displaced from and opposing the tips of the corona discharge electrodes (31); and a catalyst member (60a, b, c, d) overlaying that face of the perforated electrode plate (40a, b, c) opposing the tips of the corona discharge electrodes (31). A uniformly distributed corona discharge plasma (1000) is intermittently generated between the plurality of corona discharge electrode tips (31) and the catalyst member (60a, b, c, d) when a stream of flue gas is passed through the conduit. During those periods when corona discharge (1000) is not being generated, the catalyst molecules of the catalyst member (60a, b, c, d) adsorb mercury vapor contained in the passing flue gas. During those periods when corona discharge (1000) is being generated, ions and active radicals containedmore » in the generated corona discharge plasma (1000) desorb the mercury from the catalyst molecules of the catalyst member (60a, b, c, d), oxidizing the mercury in virtually simultaneous manner. The desorption process regenerates and activates the catalyst member molecules.« less

Inventors:
 [1]
  1. (Baltimore, MD)
Publication Date:
Research Org.:
Environmental Elements Corp., Baltimore, MD
OSTI Identifier:
879329
Patent Number(s):
US 5785932
Application Number:
08/604885
Assignee:
Environmental Elements Corp ORO
DOE Contract Number:
FG05-94ER81761
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Helfritch, Dennis J. Catalytic Reactor For Oxidizing Mercury Vapor. United States: N. p., 1998. Web.
Helfritch, Dennis J. Catalytic Reactor For Oxidizing Mercury Vapor. United States.
Helfritch, Dennis J. Tue . "Catalytic Reactor For Oxidizing Mercury Vapor". United States. doi:. https://www.osti.gov/servlets/purl/879329.
@article{osti_879329,
title = {Catalytic Reactor For Oxidizing Mercury Vapor},
author = {Helfritch, Dennis J.},
abstractNote = {A catalytic reactor (10) for oxidizing elemental mercury contained in flue gas is provided. The catalyst reactor (10) comprises within a flue gas conduit a perforated corona discharge plate (30a, b) having a plurality of through openings (33) and a plurality of projecting corona discharge electrodes (31); a perforated electrode plate (40a, b, c) having a plurality of through openings (43) axially aligned with the through openings (33) of the perforated corona discharge plate (30a, b) displaced from and opposing the tips of the corona discharge electrodes (31); and a catalyst member (60a, b, c, d) overlaying that face of the perforated electrode plate (40a, b, c) opposing the tips of the corona discharge electrodes (31). A uniformly distributed corona discharge plasma (1000) is intermittently generated between the plurality of corona discharge electrode tips (31) and the catalyst member (60a, b, c, d) when a stream of flue gas is passed through the conduit. During those periods when corona discharge (1000) is not being generated, the catalyst molecules of the catalyst member (60a, b, c, d) adsorb mercury vapor contained in the passing flue gas. During those periods when corona discharge (1000) is being generated, ions and active radicals contained in the generated corona discharge plasma (1000) desorb the mercury from the catalyst molecules of the catalyst member (60a, b, c, d), oxidizing the mercury in virtually simultaneous manner. The desorption process regenerates and activates the catalyst member molecules.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 28 00:00:00 EDT 1998},
month = {Tue Jul 28 00:00:00 EDT 1998}
}

Patent:

Save / Share: