Heterogeneously catalyzed steam reforming reactors with highly insulating wall materials for hydrogen production

<strong>Heterogeneously catalyzed steam reforming reactors with highly insulating wall materials 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: [e-mail] The design relates to a thermally coupled monolith reactor, used to thermally contact endothermic and exothermic reaction streams in adjacent channels. The geometry allows intimate thermal contact whilst keeping the streams from becoming mixed. The reactor body is constructed by modification of a substantially rigid and essentially nonporous monolith honeycomb. Prior to modification the monolith consists of a honeycombed body having a matrix of thin walls defining a multiplicity of discrete channels which pass through the body of the structure from one face to the opposing face. The monolith is modified in such a way as to produce a rigid body containing at least two discreet process flow paths which have a number of dividing walls in common. For the purpose of this design, a channel is defined as any individual passageway through the monolith body and a flow path is the group of channels used for a single reaction. The monolith body may be constructed from a number of materials using a range of techniques. Suitable materials include ceramics with a low coefficient of thermal expansion which are readily extrudable. These include, but are not limited to, mullite, corderite, alumina, and silica. Other materials include metals which may be extruded, welded, brazed, or diffusion bonded to make such structures. Using metals, it is sometimes useful to start with metal oxide powders, which are then bonded and reduced to the metallic state. Suitable metals include copper, aluminium, stainless steel, iron, titanium, and mixtures or alloys thereof. Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second) 0 5.24167 0.00025 5.35038 0.0005 5.59568 0.00075 5.86537 0.001 6.11865 0.00125 6.34243 0.0015 6.53109 0.00175 6.68219 0.002 6.79554 0.00225 6.87267 0.0025 6.91642 0.00275 6.93001 0.003 6.91683 0.00325 6.88071 0.0035 6.82557 0.00375 6.75504 0.004 6.67218 0.00425 6.58003 0.0045 6.48092 0.00475 6.37655 0.005 6.26889 0.00525 6.15969 0.0055 6.05031 0.00575 5.9419 0.006 5.83551 0.00625 5.73198 0.0065 5.63166 0.00675 5.53473 0.007 5.44181 0.00725 5.35303 0.0075 5.26832 0.00775 5.18794 0.008 5.11205 0.00825 5.0406 0.0085 4.9734 0.00875 4.91027 0.009 4.85116 0.00925 4.79592 0.0095 4.74421 0.00975 4.69592 0.01 4.6509 0.01025 4.60897 0.0105 4.57006 0.01075 4.53403 0.011 4.50066 0.01125 4.46966 0.0115 4.44077 0.01175 4.41409 0.012 4.38962 0.01225 4.36729 0.0125 4.34699 0.01275 4.32857 0.013 4.31176 0.01325 4.29635 0.0135 4.28232 0.01375 4.26966 0.014 4.2583 0.01425 4.24794 0.0145 4.23865 0.01475 4.23021 0.015 4.22255 0.01525 4.21587 0.0155 4.21007 0.01575 4.20509 0.016 4.20091 0.01625 4.1973 0.0165 4.19387 0.01675 4.19079 0.017 4.1885 0.01725 4.18682 0.0175 4.18524 0.01775 4.18388 0.018 4.18298 0.01825 4.18213 0.0185 4.18136 0.01875 4.18095 0.019 4.1809 0.01925 4.1808 0.0195 4.18068 0.01975 4.18095 0.02 4.18151 0.02025 4.18213 0.0205 4.18266 0.02075 4.18322 0.021 4.18389 0.02125 4.18446 0.0215 4.18499 0.02175 4.18578 0.022 4.18649 0.