Design principles a heterogeneously catalyzed autothermal reactor with enhanced heat and mass transfer for hydrogen production

Design principles a heterogeneously catalyzed autothermal reactor with enhanced heat and mass transfer for hydrogen production

Junjie Chen

Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China

Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com

Catalysis, in chemistry, is the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction. The rates of chemical reactions, that is, the velocities at which they occur, depend upon a number of factors, including the chemical nature of the reacting species and the external conditions to which they are exposed. A particular phenomenon associated with the rates of chemical reactions that is of great theoretical and practical interest is catalysis, the acceleration of chemical reactions by substances not consumed in the reactions themselves, substances known as catalysts. The study of catalysis is of interest theoretically because of what it reveals about the fundamental nature of chemical reactions; in practice, the study of catalysis is important because many industrial processes depend upon catalysts for their success. In a catalyzed reaction, the catalyst generally enters into chemical combination with the reactants but is ultimately regenerated, so the amount of catalyst remains unchanged. Since the catalyst is not consumed, each catalyst molecule may induce the transformation of many molecules of reactants. For an active catalyst, the number of molecules transformed per minute by one molecule of catalyst may be as large as several million. Where a given substance or a combination of substances undergoes two or more simultaneous reactions that yield different products, the distribution of products may be influenced by the use of a catalyst that selectively accelerates one reaction relative to the other(s). By choosing the appropriate catalyst, a particular reaction can be made to occur to the extent of practically excluding another. Many important applications of catalysis are based on selectivity of this kind.

Streamwise distance (millimeters), Reforming channel centerline temperature (degrees kelvin)

0                                 373

0.00025                             373.048742

0.0005                               373.2382942

0.00075                             373.7354626

0.001                                 374.7081362

0.00125                             376.2548823

0.0015                               378.3951976

0.00175                             381.0814232

0.002                                 384.2247405

0.00225                             387.7222496

0.0025                               391.465635

0.00275                             395.3617454

0.003                                 399.3347598

0.00325                             403.3218552

0.0035                               407.2775391

0.00375                             411.1628179

0.004                                 414.9538621

0.00425                             418.6311751

0.0045                               422.1828419

0.00475                             425.6012807

0.005                                 428.8821587

0.00525                             432.025476

0.0055                               435.0312325

0.00575                             437.9015946

0.006                                 440.6398117

0.00625                             443.2502165

0.0065                               445.7371415

0.00675                             448.1049195

0.007                                 450.3600492

0.00725                             452.5057803

0.0075                               454.5475284

0.00775                             456.4896262

0.008                                 458.3374895

0.00825                             460.0954509

0.0085                               461.7689261

0.00875                             463.3600816

0.009                                 464.874333

0.00925                             466.3149298

0.0095                               467.6862047

0.00975                             468.9924902

0.01                                   470.2348696

0.01025                             471.4176754

0.0105                               472.5441571

0.01075                             473.6175642

0.011                                 474.6389798

0.01125                             475.6138198

0.0115                               476.5431672

0.01175                             477.4302716

0.012                                 478.276216

0.01225                             479.0831669

0.0125                               479.8543736

0.01275                             480.5909193

0.013                                 481.2938872

0.01325                             481.9665268

0.0135                               482.6099212

0.01375                             483.2251535

0.014                                 483.8143901

0.01425                             484.377631

0.0145                               484.9170424

0.01475                             485.4347907

0.015                                 485.930876

0.01525                             486.4063812

0.0155                               486.8623897

0.01575                             487.3010677

0.016                                 487.721332

0.01625                             488.1264322

0.0165                               488.515285

0.01675                             488.8889736

0.017                                 489.2496644

0.01725                             489.5962742

0.0175                               489.9309692

0.01775                             490.2526664

0.018                                 490.5646152

0.01825                             490.8646493

0.0185                               491.1560181

0.01875                             491.4365554

0.019                                 491.7073443

0.01925                             491.970551

0.0195                               492.2250926

0.01975                             492.472052

0.02                                   492.7114294

0.02025                             492.9432247

0.0205                               493.1696042

0.02075                             493.3884016

0.021                                 493.6017832

0.02125                             493.8086659

0.0215                               494.0101329

0.02175                             494.2072672

0.022                                 494.3989857

0.02225                             494.5863716

0.0225                               494.7683417

0.02275                             494.9470624

0.023                                 495.1214504

0.02325                             495.2915058

0.0235                               495.4583118

0.02375                             495.6218682

0.024                                 495.7810921

0.02425                             495.9381497

0.0245                               496.0919577

0.02475                             496.2425163

0.025                                 496.3898255

0.02525                             496.5360515

0.0255                               496.679028

0.02575                             496.8187551

0.026                                 496.9563158

0.02625                             497.0927934

0.0265                               497.2260215

0.02675                             497.3570834

0.027                                 497.4859789

0.02725                             497.6137912

0.0275                               497.7383541

0.02775                             497.8618338

0.028                                 497.9831472

0.02825                             498.1033775

0.0285                               498.2203583

0.02875                             498.3362559

0.029                                 498.4499873

0.02925                             498.5637186

0.0295                               498.6666184

0.02975                             498.796597

0.03                                   498.88

Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China