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基于吉布斯自由能最小化理论,采用ASPEN PLUS软件建立生物油气流床气化模型,分析氧/空气当量系数(ER)、反应压力、汽碳比(S/C)以及气化剂预热温度对气化过程的影响。研究结果表明,生物油气流床氧气气化和空气气化合适的ER分别宜选在0.36及0.49;气化压力为2~4MPa;水蒸气碳比选取0.4比较适合;空气和水蒸气预热温度,分别宜选在1000~1200℃及300℃。此外,生物油重质组分具有与生物油接近的冷煤气效率、燃气热值及有效气产率,因此有很大的利用价值。
Based on Gibbs free energy minimization theory, a Biomass entrained gasification model was established using ASPEN PLUS software to analyze oxygen / air equivalence coefficient (ER), reaction pressure, steam / carbon ratio (S / C) and gasifier preheating Effect of temperature on gasification process. The results show that the suitable ER for gasification and air vaporization should be 0.36 and 0.49 respectively, the gasification pressure should be 2 ~ 4MPa, the suitable ratio of water vapor and carbon should be 0.4, the air and steam preheating temperature , Respectively, should be selected at 1000 ~ 1200 ℃ and 300 ℃. In addition, the heavy oil components of bio-oil have the advantages of cold gas efficiency, gas heat value and effective gas production rate close to that of bio-oil, so it has great value.