基于DFSS方法优化52#费托蜡的制备工艺OA北大核心CSTPCD
Optimization of the preparation process of 52# Fischer-Tropsch wax based on DFSS method
以煤间接液化的加氢精制减三线油为原料,采用溶剂萃取-结晶的方法制备52#费托蜡,并通过六西格玛设计对制备工艺进行开发.利用响应曲面设计中的中心复合设计建立响应值含油量、收率、熔点与剂油比、溶剂比、结晶时间、降温速率、结晶温度之间的数学模型,深入分析了各考察因素及其间的交互作用对响应值的影响.通过优化实验结果,验证模型,得到最佳的制备工艺参数组合以及较优的操作窗口,指导100kg/h中试试验顺利进行.研究结果表明:当剂油比为5、溶剂比为2、结晶时间6min、结晶温度5℃、降温速率为5.3℃/min时,实验室小试和中试试验产品蜡的熔点在52～54℃,含油量为0.2％～0.8％(质量分数),收率均大于25％(质量分数),产品符合国标GB/T446-2010《全精炼石蜡》的要求;实验值和模型预测值较为接近,模型的拟合效果好,预测精度高,质量可靠.
52# Fischer-Tropsch wax was prepared by solvent extraction from hydrorefining reduced third-line oil,which was investigated based on the six sigma design.The mathematical models of the oil content,yield,melting point and solvent-oil ratio,solvent ratio,crystallization time,cooling rate,and crystallization temperature were proposed by using the central composite design assigned to response surface design,analyzing the influence of each factor and their interaction on the response value.The optimal combination of preparation process parameters and better operation window were obtained by multi-objective optimizing,which guided the 100kg/h pilot test to proceed smoothly.The results showed that when the solvent-oil ratio was 5,solvent ratio was 2,crystallization time was 6min,crystallization temperature was 5℃,and the cooling rate was 5.3℃/min,the melting point of the wax was 52-54℃,the oil content was 0.2％-0.8％,and the yield was more than 25％,which met the requirement of the refined wax.The experimental value was closed to the predicted value of the model,which indicated that the models had good fitting effect,high prediction accuracy and reliable quality.
蒋晨光;张胜振;张翠清;郭屹;孙永伟
北京低碳清洁能源研究院,北京 102211
化学工程
52#费托蜡萃取结晶六西格玛响应曲面设计
52# Fischer-Tropsch waxextractive crystallizationsix sigmaresponse surface design
《化工进展》 2024 (004)
1742-1753 / 12
国家能源集团科技创新项目(GJNY-19-97和GJNY-20-120).
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