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Process simulation of biomass gasification in a bubbling fluidized bed reactor

机译：鼓泡流化床反应器中生物质气化的过程模拟

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A detailed process model was developed to simulate the air-steam gasification of biomass in a bubbling fluidized bed for hydrogen and syngas production by coupling Aspen Plus simulator and dedicated FORTRAN subroutines. Effects of critical parameters, including gasification temperature, steam/biomass ratio (SBR), equivalence ratio (ER), and biomass particle size (BPS) on the composition of fuel gas were discussed. The results indicate that the high temperature is more favorable for production of useful syngas (H_2 and CO) and hydrogen yield (HY). The simulation results also demonstrate that ER is the most important factor in the process; higher ER contributed to higher carbon conversion, tar reforming, and gas yield, however, it lowered gas caloric value and cold gas efficiency. However, steam injection recognized as a key factor to produce more hydrogen rich gas in the SBR range studied, but had a major effect on CO_2 formation. The model is validated by experimental data and found relatively to be in good agreement.
机译：通过结合Aspen Plus仿真器和专用的FORTRAN子程序，开发了一个详细的过程模型来模拟鼓泡流化床中生物质的空气-蒸汽气化，以生产氢气和合成气。讨论了关键参数（包括气化温度，蒸汽/生物质比（SBR），当量比（ER）和生物质粒径（BPS））对燃料气体组成的影响。结果表明，高温更有利于产生有用的合成气（H_2和CO）和氢气产率（HY）。仿真结果还表明，ER是该过程中最重要的因素。较高的ER有助于较高的碳转化率，焦油重整和气体产率，但是降低了气体的热值和冷气效率。然而，蒸汽注入被认为是在研究的S​​BR范围内产生更多富氢气体的关键因素，但对CO_2的形成有重大影响。该模型已通过实验数据验证，并且发现相对吻合良好。

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