| Biomass-to-hydrogen (BTH) is an important research direction in renewable energy field. In this thesis, a new route of biomass pyrolysis for hydrogen-rich gas production was proposed, which is composed of moving bed pyrolysis at atmospheric pressure, secondary thermal cracking, steaming reforming and shifting. The basic principles in BTH conversion were investigated with combination of experiments and simulating calculations.The systemic research on the pyrolysis character of agricultural residues was carried out by thermogravimetries, and the quantitative data of porolysis reaction rate, reaction time and conversion rate were obtaineded. The TG curves of different feedstocks showed accordant reaction mechanism. The calculation results of apparent kinetic revealed that the biomass pyrolysis can be approximately regarded as a one-order reaction.The moving bed reactor was designed adopted for continuous pyrolysis at atmospheric pressure. The phenomenon of hydrogen releasing in biomass pyrolysis were systemic investigated. The experiments proved that higher temperature was propitious to the yield of gas and hydrogen. The clean mid-Btu hydrogen-rich gas was generated without using any air and oxygen.The combination of the minimum principle of Gibbs free energy and Miller Model were applied to simulate the kinetics and thermodynamics equilibrium of the pyrolysis process. The BTH process, reaction trend, and influence factors were analyzed, and the products distribution according to experiments could be predicted.The steam reforming and shifting were proposed to join in the route, the energy balance calculation was carried out, the function of Calcium oxide participating in the pyrolysis was discussed, and the optimized process parameters were fixed on. Under the optimized condition, the hydrogen yield, from corn straw and rice husk, could reach 48.18 mol/kg and 45.85 mol/kg, with hydrogen concentration of 74.78% and 73.35%, and perfect energy efficiency of 77.9% and 83.4% respectively.
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