Energy efficiency optimization of ethylene production process with respect to a novel FLPEM‐based material‐product nexus. (2nd April 2019)

• Record Type: Journal Article
• Authors: Gong, Shixin; Shao, Cheng; Zhu, Li
• Is Part Of: International journal of energy research. Volume 43:Number 8(2019)
• Page Start: 3528
• Page End: 3549
• Publication Date: 2019-04-02
• Subjects: energy efficiency -- ethylene production -- functional link prediction error method -- optimization -- total‐factor material‐product nexus; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.4499
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Energy efficiency optimization and energy management can bring multiple economic benefits for the complicated petrochemical industries. However, the influence of the production scale and materials, and the uncertain data have a direct impact on the production prediction and energy efficiency optimization of ethylene production process, which is ignored by the conventional optimization strategies. To achieve energy management and reduce energy consumption considering the production technology, total energy, and material flows, a multiobjective energy efficiency optimization scheme for the ethylene production process with respect to material‐product nexus is proposed. Specifically, a total‐factor material‐product nexus model of the ethylene production is established by a novel functional link prediction error method–integrated algorithm, providing system‐level material equilibrium constraints for the energy efficiency optimization scheme. Then an optimization model with two mutually complementary energy efficiency indicators is established and implemented by the multiobjective particle swarm optimization integrating functional link prediction error method. The proposed energy efficiency optimization scheme is applied into a practical ethylene plant, and the optimization results demonstrate that energy efficiency of this plant is increased by 10.30%, synthetical energy consumption is decreased by 13.05%, and energy cost is decreased by 10.42%. Abstract : In the proposed overall energy efficiency optimization of ethylene production process with respect to the total‐factor material‐product nexus, a total‐factor material‐product nexus model is established, a multi‐objective energy efficiency optimization model of the ethylene production process integrated two mutually complementary energy efficiency indicators, and the total‐factor material‐product nexus constraint is established. The optimization results can be used as operational guidance for the relative input indicators.