ETHYLENE AND ALPHA-OLEFIN POLYMERIZATION APPARATUS AND PREPARATION METHOD

摘要

An apparatus and method for economically copolymerizing ethylene and alpha-olefin by reusing reacting raw materials and solvents, comprising: a polymerization reactor where ethylene and alpha-olefin are supplied as reaction raw materials with a solvent, and the reaction raw materials are copolymerized in a solution state to produce a polymerization product comprising a dissolved ethylene and alpha-olefin copolymer; a unit for separating unreacted ethylene, alpha-olefin, low molecular weight oligomer and a polymer, including a flash tower for distilling and separating the unreacted ethylene and alpha-olefin from the polymerization product, and a stripper unit for distilling and separating the solvent and the low molecular weight oligomer having a molecular weight lower than the molecular weight of the ethylene and alpha-olefin copolymer in the polymerization product; and a solvent recovery unit for separating the low molecular weight oligomer from the separated low molecular weight oligomer and solvent to recover the solvent.

主权项

1. An apparatus for polymerizing ethylene and aloha-olefin, comprising:
a polymerization reactor, to which ethylene and alpha-olefin of reacting raw materials and solvents are fed and in which the reacting raw materials are polymerized in solution state, for producing a polymerization product of ethylene and alpha-olefin copolymer which is dissolved in the solvent; a separation section including a flash tower for separating unreacted ethylene and aloha-olefin contained in the polymerization product by distilling; and a stripper for separating low molecular weight oligomers having lower molecular weight than the ethylene and alpha-olefin copolymer contained in the polymerization product, by distilling; and a solvent recovery section for separating the low molecular weight oligomers from the solvents and low molecular weight oligomers which are separated and then for recovering the solvents.