Techno-economic analysis of integrating the methane oxidative coupling and methane reforming processes

Real time chemical imaging of a working catalytic membrane reactor during oxidative coupling of methane

“…2b, 3 The oxidative coupling of methane (OCM) can potentially provide an economically viable route for ethylene production. 4 Additionally, the application of catalytic membrane reactors (CMR) employing oxygen transport membranes can lead to a decrease of the cost of the overall process. 5 Importantly, recent research has shown that CMRs for the OCM can achieve B35% C 2 yield; one of the highest values reported in literature.…”

“…Panels E and F again contain the micro-CT slices but here overlaid with the distributions of Na 2 WO 4 (red) and BaWO 4 (green). Panel G shows the mass spectrometry data that correspond to the following masses (m/z): 4 (He -cyan), 15 (CH 4 (1) the loss of W could impact on the long-term stability of the catalyst, (2) it will almost certainly lead to the deactivation of the membrane after many hours of operation by forming a layer at the membrane wall and therefore blocking the flow of oxygen to the catalyst bed, (3) and its presence will likely affect the reactor performance as Mn-BaWO 4 /SiO 2 shows high selectivity to CO x . 20 Beyond our experimental findings for the CMR and its use for the OCM reaction, this also work illustrates the value of these types of measurements in evaluating the performance of a reactor system for a chemical reactor engineering-based problem.…”

Reactor material and gas dilution effects on the performance of miniplant-scale fluidized-bed reactors for oxidative coupling of methane

“…This reactor system is installed in the UniCat mini-plant at Technische Universität Berlin, process engineering department, with other projects involved (different reactors and separation units) [28]. The units are being operated separately currently, aiming to incorporate them in the future.…”

Study of oxidative coupling of methane integrated with CO oxidation

“…Among all these direct processes, the closest one to commercialization is the oxidative coupling of methane (OCM) to ethylene and ethane [1,2]. However, a still low per-pass conversion of methane (below 20-30%) in order to achieve high selectivity (70-80%) as well as stability of catalysts at high reaction temperatures (780-850 o C) limits its industrial implementation [3].…”

“…Up to now, most a ention was devoted to the integration of the OCM process with dry and steam reforming of methane [2,[4][5][6][7][8][9]. Several other possibilities for the integration of OCM with aromatization [10][11][12], benzene alkylation [13], pyrolysis [14], conversion to acetic acid and/or ethanol [15], synthesis Fischer-Tropscha [16], oxidative dehydrogenation of ethane [12,[17][18][19], methanation of CO x [20,21] were also explored.…”