摘要
为优化丙烷回收工艺运行参数,以丙烷回收率和单位综合能耗为响应值,采用响应曲面法中的Box-Behnken设计(BBD)和中心复合设计(central composite design,CCD)试验优化工艺参数,从方差分析、帕累托图分析、响应面分析和优化结果4个方面优选最佳试验方法。结果显示,CCD法建立的二次响应回归模型的显著性优于BBD法,且CCD法响应曲面分析参数交互作用的显著性结果与方差分析一致。CCD法优化得到的最佳工艺如下:脱乙烷塔压力为3250 kPa,低温分离器温度为-55.6℃,液相回流比为98%,丙烷回收率为98.1%,单位综合能耗为114.1 kgce/10^(4)m^(3)(1 kgce=29.3076 MJ)。在最优工艺参数条件下,丙烷回收率增加了4.36%,产品收益达到3.548万元/d,且预测误差均小于0.2%。
In order to optimize the operating parameters of a propane recovery process,Box-Behnken design(BBD)and central composite design(CCD)tests in a response surface method were used to optimize the operating parameters of propane recovery rate and unit comprehensive energy consumption as the response values.The optimal test method was selected based on four criteria:variance analysis,Pareto graph analysis,response surface analysis and optimization results.The results show that the quadratic response regression model established using the CCD method is superior to the BBD method.The significance results of the interaction parameters of the CCD response surface analysis are consistent with the analysis of variance.The optimal process parameters obtained using the CCD method are as follows:the de‑ethanizer tower pressure is 3250 kPa,the low temperature separator temperature is-55.6℃,the liquid phase reflux ratio is 98%,the propane recovery is 98.1%,and the unit comprehensive energy consumption is 114.1 kgce/10^(4) m^(3).Under the optimal process parameters,the propane recovery rate increased by 4.36%,the product income reached 35480 yuan/day,and the prediction error was less than 0.2%.
作者
张朋岗
杨冬磊
骆兴龙
程曦
王盼
郭志强
ZHANG PengGang;YANG DongLei;LUO XingLong;CHENG Xi;WANG Pan;GUO ZhiQiang(Tarim Oilfield Company,PetroChina,Korla 841000,China)
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第6期16-27,共12页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
