Simulation And Modeling Modeling Of Syngas Production Via Glycerol Dry Reforming Using Aspen Plus

The surfeit of crude glycerol as by product from biodiesel industry triggeredrnalternative routes to valorise glycerol to value added fuels such as syngas, mixture ofrnhydrogen and carbon monoxide. Dry reforming of glycerol uses carbon dioxide (CO2)rnas reactant to produce syngas. The process of glycerol dry reforming has beenrnsimulated and the effect of thermodynamic properties on yield, selectivity andrnconversion were studied and optimized with the aid of ASPEN PLUS V8.8 in thisrnpaper. The process of simulating glycerol dry reforming was carried out usingrnRGIBBS and RPLUG reactor types. The sensitivity analysis and the optimization ofrnthe process were accomplished using the sensitivity and optimization sections of thernmodel analysis tools of the ASPEN PLUS. Furthermore, sensitivity analysis wasrncarried out to observe the effect of several parameters. The kinetic data for glycerolrndry reforming and water gas shift reactions were obtained from literature. The kineticrnbased simulation was performed using ASPEN PLUS RPLUG model blocks withrnrearranged Power law and Langmuir-Hinshelwood-Hougen –Watson (LHHW). Thernresult obtained revealed that the simulation with RGIBBS and RPLUG gave differentrnvalues of components. Furthermore, it was revealed from sensitivity analysis of thernprocess that optimization was necessary to obtain the operating variable that wouldrninvolved in the process. Optimization was able to give a satisfactory value ofrnconversion of glycerol, carbon dioxide for reforming and carbon monoxide and waterrnfor water gas shift reaction. However, much has been reported about thermodynamicrnanalysis of steam reforming of glycerol, little is known about thermodynamic analysisrnof glycerol dry reforming. In this regard, in the current work, with Aspen plusrnsimulator glycerol dry reforming thermodynamic analysis is carried out. The effect of rnprocess such as: temperature, pressure, length of the reactor, catalyst particle density,rnand feed ratio to the reactor performance were investigated. Based on this the yield ofrnsyngas was 92% over the range of temperature 573 -1273K whereas, over the rangernof pressure 1-30 bar and feed ratio 1-5; the yield of syngas were 50% and 51.24%rnrespectively

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