A CATALYST BED AND METHOD FOR REDUCING NITROGEN OXIDES

    公开(公告)号:US20190001266A1

    公开(公告)日:2019-01-03

    申请号:US16064169

    申请日:2016-12-20

    Abstract: A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. Further, a method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the second gas stream comprises at least 50% of the amount of dust in the first gas stream.

    SYSTEMS AND METHODS FOR GENERATING A CARBOXYLIC ACID FROM A CO2 GAS STREAM

    公开(公告)号:US20220177399A1

    公开(公告)日:2022-06-09

    申请号:US17523161

    申请日:2021-11-10

    Abstract: A method for generating a carboxylic acid from carbon dioxide (CO2), the method includes (a) feeding a gas stream having the CO2 to a first reactor having a base (MOH) to produce bicarbonate (MHCO3) and (b) feeding the MHCO3 generated in the first reactor to a second reactor disposed downstream from the first reactor. The second reactor includes a catalyst. The method also includes (c) contacting the MHCO3 with hydrogen gas in the presence of the catalyst in the second reactor to produce formate (HCOOM) and (d) electrolysing an aqueous solution of a metal halide (MCl) in a chloro-alkali electrolysis reactor fluidly coupled to the first reactor, the second reactor, or both to produce at least a portion of the MOH, the hydrogen gas and Cl2. The portion of the MOH is used in step (a) and the carboxylic acid is formic acid (HCOOH).

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