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Plasmachemical Trace‐Oxygen Removal in a Coke Oven Gas with a Coaxial Packed‐Bed‐DBD Reactor

 
: Nitsche, Tim; Budt, Marcus; Apfel, Ulf-Peter

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Fulltext ()

Chemie- Ingenieur- Technik 92 (2020), No.10, pp.1559-1566
ISSN: 0009-286X
ISSN: 1522-2640
English
Journal Article, Electronic Publication
Fraunhofer UMSICHT Oberhausen ()
coaxial dielectric barrier discharge; coke oven gas; nonthermal plasma; oxygen removal; packed‐bed dielectric barrier discharge

Abstract
The trace‐O2 removal in coke oven gas, which enables better utilization of its contained H2, is investigated with combinations of atmospheric nonthermal plasma and a Pt/γ‐Al2O3 catalyst. Herein it is shown that a coaxial packed‐bed dielectric barrier discharge (DBD) reactor removes up to 80 % O2 in a model coke oven gas. Along this line, the H2 content and the usage of Al2O3 granules in the plasma zone have been identified as major factors for the plasmachemical trace‐O2 conversion. In contrast to the Pt/γ‐Al2O3 catalyst, nonthermal plasma converts trace O2 at coke oven gas temperatures below 100 °C.

: http://publica.fraunhofer.de/documents/N-618286.html