Methanol synthesis from CO2 and H2 in multi-tubular fixed-bed reactor and multi-tubular reactor filled with monoliths

2014 ◽  
Vol 92 (11) ◽  
pp. 2598-2608 ◽  
Author(s):  
Sofiane Arab ◽  
Jean-Marc Commenge ◽  
Jean-François Portha ◽  
Laurent Falk
Keyword(s):  
Methanol Synthesis ◽  
Fixed Bed ◽  
Tubular Reactor ◽  
Fixed Bed Reactor

Modeling of a Fixed-Bed Reactor for the Production of Phthalic Anhydride

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Amir Rahimi ◽  
Sogand Hamidi
Keyword(s):  
Phthalic Anhydride ◽  
Fixed Bed ◽  
Tubular Reactor ◽  
Operating Conditions ◽  
Fixed Bed Reactor ◽  
Conversion Degree ◽  
Reactor Length ◽  
Reactor Temperature ◽  
Reported Data ◽  
Reactor Pressure

In this study, the performance of a fixed–bed tubular reactor for the production of phthalic anhydride is mathematically analyzed. The conversion degree and reactor temperature values are compared with the measured one in a tubular reactor applied in Farabi petrochemical unit in Iran as well as reported data in the literature for a pilot plate. The comparisons are satisfactory. The effects of some operating parameters including reactor length, feed temperature, reactor pressure, and existence of an inert in the catalytic bed are investigated. The optimum value of each parameter is determined on the basis of the corresponding operating conditions.

Modified Cuo/ZnO/Al2O3 Catalysts for Methanol Synthesis from Co and CO2 Co-Hydrogenation

2013 ◽  
Vol 690-693 ◽  
pp. 1529-1534
Author(s):  
Wen Gui Gao ◽  
Hua Wang ◽  
Wen Yan Liu ◽  
Feng Jie Zhang
Keyword(s):  
Methanol Synthesis ◽  
Active Sites ◽  
Co Hydrogenation ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Total Carbon ◽  
X Ray Diffraction ◽  
Wet Impregnation ◽  
Temperature Programmed ◽  
Co Precipitation

A series of CuO-ZnO-Al2O3catalysts modified by different promoter were prepared by co-precipitation or incipient wet impregnation and characterized by X-ray diffraction (XRD), N2physisorption, hydrogen temperature-programmed reduction (H2-TPR) and carbon dioxide temperature-programmed desorption (CO2-TPD). The modified catalysts were tested for methanol synthesis from CO/CO2co-hydrogenation in a fixed bed reactor with feed containing CO, CO2and H2(CO:CO2:H2=1.0:1.08:6.24, volume radio). It is revealed that the catalysts modified by Zr, Mg, Ca has higher activity of methanol synthesis by CO and CO2co-hydrogenation. Especially, the addition of Zr enhances the conversion of total carbon and the selectivity of methanol, which is due to the improved surface area, much more active sites, and the synergistically interaction between CuO and ZnO caused by the addition of Zr promoter.

Modeling of methanol synthesis in a 3-phase fixed-bed reactor

1986 ◽  
Vol 41 (4) ◽  
pp. 973-979 ◽  
Author(s):  
P. Galtier ◽  
A. Forestière ◽  
P. Trambouze
Keyword(s):  
Methanol Synthesis ◽  
Fixed Bed ◽  
Fixed Bed Reactor

scholarly journals Simulation and optimization of coupling reaction of methanol synthesis and isopropyl alcohol dehydrogenation

2018 ◽  
Vol 10 (3) ◽  
pp. 127
Author(s):  
Jenny Rizkiana ◽  
Yogi Wibisono Budhi ◽  
Azis Trianto
Keyword(s):  
Methanol Synthesis ◽  
Isopropyl Alcohol ◽  
Fixed Bed ◽  
Coupling Reaction ◽  
Fixed Bed Reactor ◽  
Inlet Temperature ◽  
Simulation And Optimization ◽  
Optimum Operation ◽  
Operation Conditions ◽  
Reaction Conversion

A study on simulation and optimization of coupling reaction between methanol synthesis and isopropyl alcohol (IPA) dehydrogenation was performed. The analysis is carried out theoretically to obtain the optimum operation conditions which give the best performance. The reactions are just interacting thermally. In this study, both reactions are held catalytically in a heat-exchanger type reactor. As a high pressure reaction, methanol synthesis is placed in the inner side of reactor tube while dehydrogenation of IPA is in the opposite. Tube wall acts as a heat transfer media. The reactor is modeled by a steady state heterogeneous equation for a fixed bed reactor. Optimization is done in order to find the optimum value of operation conditions, those are the inlet temperature of both side of reactor and the molar feed flow ratio between the exothermic side and the endothermic side. Sum of weighted reaction conversion is considered to be the objective function that is maximized. The simulation result shows that coupled reactor makes the reaction conversion higher than a conventional adiabatic reactor and the optimum operation conditions give the maximum value of the conversion. This study presents a theoretical proof that coupling reaction is feasible. Keywords: coupling reaction, IPA dehydrogenation, methanol synthesis, optimization, simulated annealingAbstrak Telaah mengenai simulasi dan optimisasi reaksi perangkaian (coupling reaction) antara sintesis metanol dengan dehidrogenasi isopropil alkohol (IPA) telah dilakukan. Analisis dilaksanakan secara teoretik guna mendapatkan kondisi optimum yang akan memberikan hasil terbaik. Pada penelitian ini, kedua reaksi dilaksanakan secara katalitik dalam reaktor bertipe buluh-cangkang. Karena bertekanan tinggi, sintesis metanol ditempatkan pada sisi buluh, sedangkan dehidrogenasi IPA ditempatkan pada sisi cangkang. Dinding buluh berperan sebagai media perpindahan panas. Reaktor dimodelkan dengan reaktor heterogen tunak unggun tetap. Optimisasi dilakukan dalam rangka mendapatkan nilai optimum dari kondisi operasi yang mencakup temperatur inlet sisi eksotermik dan endotermik serta rasio umpan molarnya. Jumlah total konversi reaksi terbobotkan dipilih sebagai nilai objectif yang akan dioptimumkan. Hasil simulasi menunjukkan bahwa reaktor perangkaian termal mampu meningkatkan konversi reaksi jika dibandingkan dengan reaktor adiabatik dan pada kondisi operasi yang optimum diperoleh konversi maksimal. Penelitian ini menunjukkan bahwa reaksi perangkaian layak untuk dilaksanakan.Kata kunci: reaksi perangkaian, dehidrogenasi IPA, sintesis methanol, optimisasi, simulated annealing

scholarly journals Kinetic Study Based on the Carbide Mechanism of a Co-Pt/γ-Al2O3 Fischer–Tropsch Catalyst Tested in a Laboratory-Scale Tubular Reactor

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 717 ◽  
Author(s):  
Marco Marchese ◽  
Niko Heikkinen ◽  
Emanuele Giglio ◽  
Andrea Lanzini ◽  
Juha Lehtonen ◽  
...  
Keyword(s):  
Carbon Number ◽  
Fixed Bed ◽  
Tubular Reactor ◽  
Fixed Bed Reactor ◽  
Molar Ratio ◽  
Fischer Tropsch ◽  
Mechanism Model ◽  
Conversion Level ◽  
Temperature Programmed ◽  
Xrd Techniques

A Co-Pt/γ-Al2O3 catalyst was manufactured and tested for Fischer–Tropsch applications. Catalyst kinetic experiments were performed using a tubular fixed-bed reactor system. The operative conditions were varied between 478 and 503 K, 15 and 30 bar, H2/CO molar ratio 1.06 and 2.11 at a carbon monoxide conversion level of about 10%. Several kinetic models were derived, and a carbide mechanism model was chosen, taking into account an increasing value of termination energy for α-olefins with increasing carbon numbers. In order to assess catalyst suitability for the determination of reaction kinetics and comparability to similar Fischer–Tropsch Synthesis (FTS) applications, the catalyst was characterized with gas sorption analysis, temperature-programmed reduction (TPR), and X-ray diffraction (XRD) techniques. The kinetic model developed is capable of describing the intrinsic behavior of the catalyst correctly. It accounts for the main deviations from the typical Anderson-Schulz-Flory distribution for Fischer–Tropsch products, with calculated activation energies and adsorption enthalpies in line with values available from the literature. The model suitably predicts the formation rates of methane and ethylene, as well as of the other α-olefins. Furthermore, it properly estimates high molecular weight n-paraffin formation up to carbon number C80.

scholarly journals Pd/CeO 2 catalysts as powder in a fixed-bed reactor and as coating in a stacked foil microreactor for the methanol synthesis

2016 ◽  
Vol 273 ◽  
pp. 25-33 ◽  
Author(s):  
Xuyen Kim Phan ◽  
John C. Walmsley ◽  
Hamid Bakhtiary-Davijany ◽  
Rune Myrstad ◽  
Peter Pfeifer ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Fixed Bed ◽  
Fixed Bed Reactor

Optimal Control of Methanol Synthesis Fixed-Bed Reactor

2013 ◽  
Vol 52 (36) ◽  
pp. 13079-13091 ◽  
Author(s):  
Flavio Manenti ◽  
Giulia Bozzano
Keyword(s):  
Optimal Control ◽  
Methanol Synthesis ◽  
Fixed Bed ◽  
Fixed Bed Reactor

scholarly journals Synthesis of methanol in microchnnel

2021 ◽  
Vol 2119 (1) ◽  
pp. 012113
Author(s):  
S V Dimov
Keyword(s):  
Experimental Data ◽  
Carbon Monoxide ◽  
Chemical Reactions ◽  
Synthesis Gas ◽  
Methanol Synthesis ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Microchannel Reactor ◽  
Flow Rates ◽  
Synthesis Of Methanol

Abstract Systematic experimental data have been obtained on the results of catalytic chemical reactions in a microchannel reactor for the synthesis of methanol from synthesis gas. Synthesis gas contains hydrogen, carbon monoxide and dioxide, as well as nitrogen in the ratio 58/29/5/8. The experiments were carried out at different flow rates in the temperature range 190-260C. Experiments were also carried out for methanol synthesis in fixed bed reactor at different synthesis pressures.

Sign in / Sign up

Export Citation Format

Share Document