Effect of particle shape on methanol partial oxidation in a fixed bed using CFD reactor modeling

AIChE Journal ◽  
2020 ◽  
Vol 66 (5) ◽  
Author(s):  
Behnam Partopour ◽  
Anthony G. Dixon
Keyword(s):  
Partial Oxidation ◽  
Particle Shape ◽  
Fixed Bed ◽  
Reactor Modeling ◽  
Methanol Partial Oxidation

CFD s tudy on partial oxidation of methane in fixed‐bed reactor

2019 ◽  
Vol 98 (3) ◽  
pp. 757-766
Author(s):  
Yonghui Li ◽  
Chao Lu ◽  
Xingxing Cao ◽  
Zhongfeng Geng ◽  
Minhua Zhang
Keyword(s):  
Partial Oxidation ◽  
Fixed Bed ◽  
Partial Oxidation Of Methane ◽  
Fixed Bed Reactor ◽  
Oxidation Of Methane

Methanol partial oxidation on carbon-supported Pt and Pd catalysts

2007 ◽  
Vol 123 (1-4) ◽  
pp. 158-163 ◽  
Author(s):  
R. Ubago-Pérez ◽  
F. Carrasco-Marín ◽  
C. Moreno-Castilla
Keyword(s):  
Partial Oxidation ◽  
Pd Catalysts ◽  
Methanol Partial Oxidation

scholarly journals Active sites for methanol partial oxidation on nanoporous gold catalysts

2016 ◽  
Vol 344 ◽  
pp. 778-783 ◽  
Author(s):  
Lu-Cun Wang ◽  
Michelle L. Personick ◽  
Stavros Karakalos ◽  
Rebecca Fushimi ◽  
Cynthia M. Friend ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Active Sites ◽  
Gold Catalysts ◽  
Nanoporous Gold ◽  
Methanol Partial Oxidation

Advances in fixed-bed reactor modeling using particle-resolved computational fluid dynamics (CFD)

2019 ◽  
Vol 35 (2) ◽  
pp. 139-190 ◽  
Author(s):  
Nico Jurtz ◽  
Matthias Kraume ◽  
Gregor D. Wehinger
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Fixed Bed ◽  
Review Article ◽  
Catalyst Design ◽  
Fixed Bed Reactor ◽  
Reactor Modeling ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Computational Fluid Dynamics Cfd

Abstract In 2006, Dixon et al. published the comprehensive review article entitled “Packed tubular reactor modeling and catalyst design using computational fluid dynamics.” More than one decade later, many researchers have contributed to novel insights, as well as a deeper understanding of the topic. Likewise, complexity has grown and new issues have arisen, for example, by coupling microkinetics with computational fluid dynamics (CFD). In this review article, the latest advances are summarized in the field of modeling fixed-bed reactors with particle-resolved CFD, i.e. a geometric resolution of every pellet in the bed. The current challenges of the detailed modeling are described, i.e. packing generation, meshing, and solving with an emphasis on coupling microkinetics with CFD. Applications of this detailed approach are discussed, i.e. fluid dynamics and pressure drop, dispersion, heat and mass transfer, as well as heterogeneous catalytic systems. Finally, conclusions and future prospects are presented.

Methanol Partial Oxidation Over Shaped Silver Nanoparticles Derived from Cubic and Octahedral Ag2O Nanocrystals

2019 ◽  
Vol 149 (9) ◽  
pp. 2482-2491 ◽  
Author(s):  
Min Yang ◽  
Rui You ◽  
Dan Li ◽  
Zhenhua Zhang ◽  
Weixin Huang
Keyword(s):  
Silver Nanoparticles ◽  
Partial Oxidation ◽  
Methanol Partial Oxidation

Char and Tar Production From Dairy Biomass Gasification Using Air-Steam for Partial Oxidation

2011 ◽  
Author(s):  
Gerardo Gordillo ◽  
Kalyan Annamalai
Keyword(s):  
Air Pollution ◽  
Renewable Energy ◽  
Partial Oxidation ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Fixed Bed ◽  
Dairy Manure ◽  
Energy Sources ◽  
Animal Feeding Operations ◽  
Animal Feeding

The increase in air pollution caused by combustion of fossil fuels demands the exploration of renewable energy sources in order to mitigate the dependence on fossil fuels. Research includes the efforts to partially replace fossil fuels with renewable energy-sources in thermal conversion processes in order to reduce the emission of CO2. The animal wastes can be considered as biomass fuels since their properties are almost similar to ration fed to animals. Concentrated animal feeding operations (CAFOs) such as cattle feedlots and dairies produce a large amount of feedlot manure or feedlot biomass (FB) and dairy manure or dairy biomass (DB), which may lead to land, water, and air pollution if waste handling systems and storage and treatment structures are not properly managed. Both FB and DB are grouped under cattle manure or cattle biomass (CB). The concentrated production of low quality CB at these feeding operations can serve as a good feedstock for locally based gasification for syngas (CO and H2) production and subsequent use in combined heat and power generation. If thermal gasification technology is developed for DB fuels, the environmental impact from both animal feeding operations and fossil-fuels could be mitigated. The current paper presents experimental results obtained from adiabatic fixed-bed gasification of DB using a 10 KW fixed bed counter-flow gasifier and air-steam for partial oxidation. A mass spectrometer (ProLab Thermo ONIX) was used to analyze the gas composition continuously and at real time. The effect of the operating parameters studied, which includes equivalence ratio (1.6 < Φ < 6.4) and steam to fuel (S:F) ratio (0.4 < S:F < 0.8, on the yields of gases, char, and tar are discussed. Also, results from gasification of dairy biomass–ash blend (DB-Ash) and dairy biomass Wyoming coal blend (DB-WYC) is presented for comparison effects. In general, for the set of experiments performed using DB, the gas yield was 1.54 to 5.30 dry tar-free kg of gases per each kg of DAF DB gasified while the char production ranged from 0 to 0.18 kg of char per DAF kg of DB gasified. The average of tar concentration in gases leaving the gasifier was about 80 g/ SATP m3.

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