DOI: 10.5281/zenodo.7255126
title: Thermally coupled monolith reactors with enhanced heat and mass transfer for hydrogen production

description: <strong>Thermally coupled monolith reactors with enhanced heat and mass transfer for hydrogen production</strong> 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 The thermally coupled monolith reactor design comprises, in one form thereof, a monolith to which, at each end, the uppermost section of the dividing walls of alternate rows of channels has been ground or cut away. The top section of each of the created voids has been sealed with a suitable material from the end to a depth as to leave an opening in the outer wall, such that a distinct inlet or outlet is formed. A catalyst coating has been applied to the inner wall of the two sets of channels using a suitable technique, one of which is the well-known washcoat technique. Two manifolds, with suitable gaskets, are attached to open ends of the monolith. Furthermore, two addition manifolds, with suitable gaskets, are affixed to the two newly formed openings. The gasket material is chosen to afford a reasonable gas tight seal to prevent cross flow between the two channels. The catalyst coatings may need to be calcined and reduced in order to produce an active catalyst. More particularly, the design comprises, in one form, a monolith to which alternate channels have been sealed at opposing ends. A catalyst coating has been applied to the inner wall. A thin capillary like tube is passed through the inlet of the void and arranged such that it falls short of the sealed end. The opposing end is prepared in a similar manner. Process gas is passed through this tube to the far end of the monolith. The fluid exits the tube is directed back towards to inlet. As the fluid traverses the channel reaction occurs in the catalytically coated walls. Any heat which is required or generated by the process is transferred through the wall. However, even with this highly efficient transfer mechanism the gas will still absorb some heat energy and become hot. This heat energy can be conducted through the capillary inlet tube to preheat the incoming reactants. This arrangement alleviates the need for an external heat exchanger (although one can be used to provide further heating) and improvers the overall efficiency of the reactor. Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second) 0 10.8203 0.00025 10.9546 0.0005 11.2153 0.00075 11.4215 0.001 11.5345 0.00125 11.5606 0.0015 11.5129 0.00175 11.4049 0.002 11.2484 0.00225 11.0544 0.0025 10.8331 0.00275 10.5932 0.003 10.3414 0.00325 10.0835 0.0035 9.82406 0.00375 9.56646 0.004 9.31349 0.00425 9.06713 0.0045 8.82918 0.00475 8.60082 0.005 8.3823 0.00525 8.17379 0.0055 7.97561 0.00575 7.78777 0.006 7.61007 0.00625 7.44219 0.0065 7.28392 0.00675 7.13507 0.007 6.99548 0.00725 6.86493 0.0075 6.74275 0.00775 6.62832 0.008 6.52152 0.00825 6.42164 0.0085 6.32835 0.00875 6.24151 0.009 6.16052 0.00925 6.08491 0.0095 6.01452 0.00975 5.94897 0.01 5.88786 0.01025 5.83131 0.0105 5.7787 0.01075 5.72978 0.011 5.68436 0.01125 5.64228 0.0115 5.60333 0.01175 5.56712 0.012 5.53346 0.01225 5.5021 0.0125 5.47301 0.01275 5.44619 0.013 5.42156 0.01325 5.3988 0.0135 5.37773 0.01375 5.35853 0.014 5.34102 0.01425 5.32469 0.0145 5.30957 0.01475 5.29573 0.015 5.28316 0.01525 5.27177 0.0155 5.26118 0.01575 5.25136 0.016 5.24246 0.01625 5.23449 0.0165 5.22729 0.01675 5.22085 0.017 5.21505 0.01725 5.20996 0.0175 5.20538 0.01775 5.20125 0.018 5.19797 0.01825 5.195 0.0185 5.19226 0.01875 5.19015 0.019 5.1885 0.01925 5.18698 0.0195 5.18558 0.01975 5.18461 0.02 5.18412 0.02025 5.18363 0.0205 5.18302 0.02075 5.18277 0.021 5.18289 0.02125 5.1829 0.0215 &nbsp
description: 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