TY - CHAP
T1 - Multi-objective Optimization of Low Density Polyethylene (LDPE) Tubular Reactor Using Strategies of Differential Evolution
AU - Gujarathi, Ashish M.
AU - Babu, B. V.
PY - 2013
Y1 - 2013
N2 - Multi-objective optimization of industrial low density polyethylene (LDPE) tubular reactor is carried out using improved strategies of multi-objective differential evolution (MODE) algorithm (namely, MODE-III and hybrid-MODE). Two case studies consisting of two-objective optimization and four-objective optimization are considered. In case-1, two objectives namely, maximization of conversion and minimization of the sum of square of normalized side chain concentrations are considered. A set of eleven decision variables, which consists of operating variables, namely, inlet temperature (Tin), inlet pressure (P in), the feed flow rates of -oxygen (Fo), -solvent (FS),-initiators (FI,1, FI,2), and the five average jacket temperatures (TJ,1-TJ,5), are considered. Constraints on maximum temperature attained in the reactor and number average molecular weight are considered. The results of present study show that MODE-III algorithm is able to give consistent results for various control parameters. These results show the ability of the existing algorithm to produce more valuable and practical results that are important to the process plant engineer.
AB - Multi-objective optimization of industrial low density polyethylene (LDPE) tubular reactor is carried out using improved strategies of multi-objective differential evolution (MODE) algorithm (namely, MODE-III and hybrid-MODE). Two case studies consisting of two-objective optimization and four-objective optimization are considered. In case-1, two objectives namely, maximization of conversion and minimization of the sum of square of normalized side chain concentrations are considered. A set of eleven decision variables, which consists of operating variables, namely, inlet temperature (Tin), inlet pressure (P in), the feed flow rates of -oxygen (Fo), -solvent (FS),-initiators (FI,1, FI,2), and the five average jacket temperatures (TJ,1-TJ,5), are considered. Constraints on maximum temperature attained in the reactor and number average molecular weight are considered. The results of present study show that MODE-III algorithm is able to give consistent results for various control parameters. These results show the ability of the existing algorithm to produce more valuable and practical results that are important to the process plant engineer.
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U2 - 10.1007/978-3-642-30504-7_25
DO - 10.1007/978-3-642-30504-7_25
M3 - Chapter
AN - SCOPUS:84885450115
SN - 9783642305030
T3 - Intelligent Systems Reference Library
SP - 615
EP - 639
BT - Handbook of Optimization
A2 - Zelinka, Ivan
A2 - Snasel, Vaclav
A2 - Abraham, Ajith
ER -