An advanced control of heat integrated air separation column based on simplified wave model. (January 2017)

• Record Type: Journal Article
• Authors: Fu, Yao; Liu, Xinggao
• Is Part Of: Journal of process control. Volume 49(2017:Jan.)
• Page Start: 45
• Page End: 55
• Publication Date: 2017-01
• Subjects: C compressor -- CASC conventional air separation column -- Data-GMC generic model control based on data-driven model -- E heat exchanger -- GAIR oxygen-rich vapor air -- GGMC generalized generic model control -- GMC generic model control -- GN nitrogen product -- HIASC heat integrated air separation column -- HIDiC heat integrated distillation column -- HPC high pressure column -- ISE integral square value of error -- LAIR oxygen-rich liquid air -- LO oxygen product -- LPC low pressure column -- SW-GGMC generalized generic model control based on simplified wave model -- V throttling valve -- Wave-GMC generic model control based on nonlinear wave model -- WLN side stream of low-purity liquid nitrogen product; Generalized generic model control -- Heat integrated air separation column -- High purity -- Nonlinear wave model -- Simplified instant wave velocity; Process control -- Periodicals; Fabrication -- Contrôle -- Périodiques; Process control; Periodicals; Electronic journals; 660.281
• DOI: 10.1016/j.jprocont.2016.11.004
• Languages: English
• ISSNs: 0959-1524

Abstract

Graphical abstract: Highlights: An improved instant wave velocity is first derived for the heat integrated air separation column (HIASC). A simplified nonlinear wave model of the high-purity HIASC is further established. Combined with the proposed wave model, a novel generalized generic model control scheme (SW-GGMC) is carried out. Abstract: An improved instant wave velocity is first derived for the heat integrated air separation column (HIASC), which is more simplified and accurate than the traditional one. Based on the simplified wave velocity, a nonlinear wave model of the high-purity HIASC is further established. Combined with the proposed wave model, a novel generalized generic model control scheme (SW-GGMC) is carried out, which is compared with the generic model controllers based on the traditional wave model (Wave-GMC) and data-driven model (Data-GMC), respectively. In both servo control and regulatory control, SW-GGMC exhibits the best performances. Detailed research results confirm the efficiency of the simplified wave model and the advantages of the proposed SW-GGMC control scheme.