【摘要】 煤焦油用途十分广泛,但组成极其复杂,通过将真实组分与虚拟组分相结合的方法来表征复杂的煤焦油体系,运用化工流程模拟软件Aspen Plus V9.0对煤焦油常减压蒸馏流程进行了模拟计算,分析了回流比、理论塔板数、侧线采出位置和进料位置对产品质量的影响。结果表明:在优化的工艺条件下,轻油馏分中酚质量分数为0.5%;酚油馏分中酚质量分数达到42.4%,萘质量分数为9.5%;萘油馏分中萘质量分数达到85.0%;洗油馏分中酚质量分数和萘质量分数分别为0.11%和2.6%,产品质量显著提升。更多还原

【Abstract】 Coal tar is widely used,but its composition is extremely complex. The complex coal tar system was characterized by combining real components with virtual components as model system,and the atmospheric and vacuum distillation process of coal tar was simulated and calculated by using chemical process simulation software Aspen Plus V9.0. The effects of reflux ratio,number of theoretical trays,side position of extraction,and feeding position on product quality were analyzed. The results showed that under the optimized process conditions,the mass fraction of phenol in light oil fraction reduced to 0.5%;the mass fraction of phenol in the phenol oil fraction reached 42.4%,while the mass fraction of naphthalene decreased to 9.5%. The mass fraction of naphthalene in naphthalene oil fraction reached 85.0%. The mass fractions of phenol and naphthalene in the wash oil fraction decreased to 0.11% and 2.6%,respectively,and the product quality was significantly improved.更多还原