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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Dynamic Simulation of Reactor to Produce 1-Butene by Dimerization of Ethylene
Full Text(PDF, )  PP.I046-I052  
Author(s)
Anurag Choudhary, Avinash Shetty, Satish Oswal
KEYWORDS
UNISIM Simulation; Kinetic model; Dimerization of ethylene; 1-Butene selectivity; Reactor simulation
ABSTRACT
The aim of this work was to develop dynamic simulation model for reactor which is heart of 1-Butene production. The liquid phase catalytic dimerization of ethylene in 1-Butene stands as the most selective and economical route to produce polymerization grade 1-Butene. This paper identifies the components of this homogeneous system and discusses, in fair detail, the factors controlling its selectivity to 1-Butene. Other different themes covered include: structure of the active species, kinetics, mechanistic considerations and the principal reaction parameters. This dimerization is achieved thanks to a titanium compound activated by alkyl aluminum (TEAL). BY-Products are mainly hexenes formed either by reaction of 1-Butene with Ethylene or by trimerization of ethylene, and some small amount of polymer formation. The heat of reaction is removed by heat exchanger provided in pump around loop. The catalyst and TEAL is added in pump around loop in optimum ratio to increase selectivity of 1-Butene. The simulation of such a reactor was performed using the simulation program UNISIM, which does not have provision for non-standard reaction kinetic expressions. Owing to this limitation of the software, the bubble reactor had to be described by dividing reactor in five small continuous stirred types of reactor (CSTR) for optimum performance. The simulation model is very flexible and useful for the simulation and operation of this type of reactor.
References
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