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首页> 外文会议>American Institute of Chemical Engineers Spring National Meeting >The Production of Hydrogen from Partial Oxidation of Biomass in Subcritical and Supercritical Water - A Thermodynamic Equilibrium Analysis
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The Production of Hydrogen from Partial Oxidation of Biomass in Subcritical and Supercritical Water - A Thermodynamic Equilibrium Analysis

机译：亚临界和超临界水中生物质部分氧化的氢 - 一种热力学平衡分析

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摘要

Hydrogen energy has become increasingly important in recent years because its combustion produces nothing but water vapor and because it is the most desirable feed for fuel cells. It has been demonstrated that high yield of hydrogen gas can be produced from the gasification of biomass materials in supercritical water. However, investigations so far have been mostly experimental, and theoretical studies are scarce. Supercritical water possesses many unique features including high temperature ( > 647.4 K), high pressure ( > 22 MPa), low hydrogen-bond concentration in addition to other typical characteristics of supercritical fluids, making it a promising, and sometimes ideal, media for the reactions of organics. Despite numerous successful experimental demonstrations, effects of the major operating parameters, e.g. reaction temperature, pressure, water density, feed composition, on the process remain unclear. The present study attempts to investigate the optimum operating conditions of the partial oxidation of biomass materials in supercritical water by means of thermodynamic equilibrium modeling to access the influence of the major parameters. A thermodynamic equilibrium model based on equilibrium equations and equations of state has been proposed, and implemented through an extremely efficient computational scheme that is capable of generating a solution in merely fractions of a millisecond using a notebook computer.
机译：由于其燃烧产生的只是水蒸汽氢能已成为近年来越来越重要，因为它是燃料电池最可取的饲料。已经证实的是氢气的高收率可以从生物质材料在超临界水的气化产生。然而，调查至今已大多实验和理论研究很少。超临界水具有许多独特的特性，包括高的温度（> 647.4 K），高压（> 22兆帕），除了超临界流体的其它典型特征低氢键浓度，使其成为一个有前途的，有时理想的，对于媒体有机物的反应。尽管有许多成功的试验示范，主要运行参数的影响，例如，反应温度，压力，水的密度，进料组成，对过程仍不清楚。本研究试图通过热力学平衡模型来调查生物质材料在超临界水的部分氧化的最佳操作条件访问主要参数的影响。基于平衡方程和状态方程的热力学平衡模型已被提出，并实现通过能够产生在仅仅使用笔记本电脑一毫秒的级分的溶液的一个非常有效的计算方案。

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