| A novel process scheme known as Sorption Enhanced Chemical Looping Reforming?SECLR?for hydrogen production from ethanol is discussed in this work.A thermodynamic analysis is used to investigate the effects of the operating parameters on the SECLR under steady-state condition.The effects of the nickel oxide to steam molar ratio?NiO/S?,calcium oxide to ethanol molar ratio?CaO/C2?,the temperature and the pressure on the performance of the reformer reactor of SECLR process are analyzed in terms of hydrogen production and purity.The performances of the reformer reactor indicate the H2 purity of 98.68%and H2 yield of4.992 moles per mol ethanol can be obtained at conditions NiO/S of 0.1875,the temperature of 500°C,CaO/C2 of 2,steam to ethanol ratio?S/C2?of 4.Subsequently,the process simulation of SECLR process is investigated.To balance the heat of the process,the effect of carbon yield of 0%,1%and 5%as well as various NiO/ethanol molar ratios are investigated.The process simulations indicate that H2 production yield of 5.051 moles per 1 mol ethanol with a purity of 98.52%on a dry basis can be produced at carbon yield 0.005 moles of carbon per 1 mol ethanol,NiO/C2 of 0.645,CaO/C2 of 2 and S/C2 of 4.Process simulation results indicate the SECLR process can achieve higher H2 purity and higher process efficiency compared to the CLR and SESR processes. |
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