Catalytic Oxygen Removal from Synthetic Coke Oven Gas: A Comparison of Sulfided CoMo/γ‐Al2O3 and NiMo/γ‐Al2O3 Catalysts with Pt/γ‐Al2O3 as Benchmark Catalyst

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The following orientational study uses a factorial experimental design (DoE) strategy to determine the influence of different process parameters on the catalytic removal of oxygen traces (4500–9000 ppmv O2) from coke oven gas by commercial Pt/γ‐Al2O3. Along this line, various experiments have been performed from 1 up to 11 bar and 150–250 °C with a gas hourly space velocity between 20 000 and 25 000 h−1. The statistical analysis demonstrates that the applied temperature and pressure have a significant impact on the oxygen removal process. Experiments using gas mixtures with additional 350 ppmv H2S indicate a deactivation of the catalyst with a 66 % oxygen conversion at 250 °C and 6 bar. The close agreement between predicted and experimental data highlights the efficient approach for optimizing the oxygen removal from coke oven gas utilizing DoE strategies.

Section: Resultssupporting

confidence: 88%

“…One promising technique is the thermocatalytic removal of O 2 from raw COG [9]. The potential and performance of noble metal catalysts, e.g., platinum-based ones, have been shown in several previous investigations [10,11]. These catalysts tend to be poisoned by sulfur compounds.…”

Section: Introductionmentioning

confidence: 99%

Application of Design of Experiments for Catalytic Oxygen Removal over Pt/γ‐Al₂O₃ Catalyst

Suh

Geitner

Hänel

et al. 2022

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“…It has been shown in reported experiments [23] that the CO deactivation limits the O 2 conversion in a similar model coke oven gas with the Pt/g-Al 2 O 3 catalyst up to fixed-bed temperatures of 100°C and a further increase of the fixedbed temperature is necessary to achieve O 2 conversion degrees of at least 80 % with Pt/g-Al 2 O 3 . These are considerable limitations for the catalytic O 2 removal, especially for the COG with an available inlet temperature of 30°C.…”

Section: Methodsmentioning

confidence: 95%

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

Nitsche

Budt

Apfel

2020

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.

“…This investigation aims to identify suitable low-cost catalysts and to determine promising process parameters. To date, various catalytic systems (based on precious and non-precious metals) have been tested and showed encouraging oxygen removal behavior [24,25]. Therefore, the results are used to plan and construct a pilot plant that will be connected and operated with COG upstream of the pressure swing adsorption system at the technical center in Duisburg.…”

Section: Gas Cleaning and Conditioning Of Steel Mill Process Gasesmentioning

confidence: 99%

The Carbon2Chem® Laboratory in Oberhausen – A Workplace for Lab‐Scale Setups within the Cross‐Industrial Project

Schittkowski

Zeidler‐Fandrich

Müller

et al. 2022

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Within the Carbon2Chem® network, basic research is mandatory for a successful implementation and realization of sustainable technologies for CO2 emission reduction. For this purpose, the exchange of knowledge between the project partners in the individual subareas is as essential as obtaining precise data on the fundamental parameters on a laboratory scale in order to transfer them later to large‐scale plants. Therefore, the Carbon2Chem® laboratory offers a platform to gain detailed insights into the individual sub‐processes and to then apply these findings at the technical center in Duisburg.