A hierarchical scheduled optimization and control for minimizing production cost and energy consumption of CSTR - Details

author：

An, Aimin (An, Aimin.) ^[1] | Li, Shaoyong (Li, Shaoyong.) ^[2] | Zhang, Dengfeng (Zhang, Dengfeng.) ^[3] | Zhao, Chao (Zhao, Chao.) ^[4] (Scholars：赵超) | Zhang, Haochen (Zhang, Haochen.) ^[5]

Indexed by：

EI Scopus

Abstract：

For　traditional　chemical　process　industry,　the　main　aims　of　production　in　most　processes　are　to　promote　quality　of　productivity　and　to　maximizing　economic　profits,　but　fewer　works　strive　to　reduce　energy　consumption　through　optimal　production　schedule　and　optimal　process　operation.　In　this　study,　a　hierarchical　scheduled　optimal　and　control　strategy　for　continuous　flow　stirred　tank　reactor(CSTR)　operation　is　presented　in　detail.　A　performance　index　is　used　to　minimize　total　energy　consumption,　other　than　maximize　profit.　Meanwhile,　production　schedule　optimization　is　combined　with　optimal　process　operation　based　on　taking　the　presence　of　ever-changing　external　influences　into　account,　such　as　changing　raw　material　prices　in　marketplace,　the　depreciation　cost　of　main　equipments　and　servicing　facilities,　wages　of　workers,　utilities　cost　for　the　premise　condition.　The　optimal　setpoints　of　key　variables　in　process　are　derived　from　top　production　schedule　optimization　layer,　and　optimal　process　operation　which　model　predictive　control　algorithm　is　implemented　at　lower　optimal　process　control　operation　layer.　The　effects　of　production　factors　on　the　total　energy　consumption　are　analyzed.　The　effectiveness　of　this　method　is　demonstrated　by　CSTR　case　study.　©　2014　TCCT,　CAA.

Keyword：

Chemical industry Costs Energy utilization Model predictive control Predictive control systems Production control Profitability

Community：

[ 1 ] [An, Aimin]College of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
[ 2 ] [Li, Shaoyong]College of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
[ 3 ] [Zhang, Dengfeng]School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing; 210094, China
[ 4 ] [Zhao, Chao]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Zhang, Haochen]College of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou; 730050, China