文献类型：期刊文献

英文题名：Hinging Hyperplanes Crude Oil Mixing Model for Production Planning Optimization

作者：Li, Fupei[1];Qian, Feng[1];Fan, Chen[1];Mahalec, Vladimir[2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Control & Optimizat Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L8, Canada

年份：2020

卷号：59

期号：18

起止页码：8704

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20202208709164);WOS:【SCI-EXPANDED(收录号:WOS:000535173400018)】；

基金：This work was supported by the National Natural Science Foundation of China (Basic Science Center Program: 61988101), the International (Regional) Cooperation and Exchange Project (61720106008), the National Natural Science Foundation of China (Major Program 61590923), the National Natural Science Fund for Distinguished Young Scholars (61725301), the National Natural Science Foundation of China (Major Program: 61590922), and McMaster University WBooth School of Engineering Practice and Technology.

语种：英文

外文关键词：Piecewise linear techniques - Production control - Integer programming - Crude oil - Curve fitting - Distillation - Distillation equipment - Geometry - Petroleum refineries

摘要：Refinery feed, usually a mixture of several crude oils, is separated via a crude distillation unit (CDU). Crude true boiling point (TBP) distillation curve determines the amount of products which can be obtained via CDU separation. The TBP curve of the mixed crude feed is calculated by blending pseudocomponents from each individual crude; the blending calculation introduces a lot of nonlinear terms and makes it difficult to optimize the crude selection and the downstream refinery operation. This work proposes a continuous piecewise linear (CPWL) model to approximate the crude blending, thereby eliminating the nonlinear blending terms. A hinging hyperplanes (HH) model is employed to formulate the CPWL model. In addition, its parameters are computed by a two-layer perceptron, which is built to simulate the HH model. This leads to a mixed-integer linear model suitable for crude oil selection and cut point optimization. The proposed model enables accurate computation of the mixed crude feed TBP curve while eliminating nonlinear blending terms. Hence, it is suitable for inclusion in refinery planning models dealing with optimal crude selection.