FINISHING DESIGN TO INCREASE THE POLYMER CONTENT IN AN OLEFIN SOLUTION POLYMERIZATION PROCESS
摘要
The polymer recovery capacity of solution polymerization units is increased by flashing a polymer solution exiting olefin polymerization reactors to produce a concentrated polymer solution having a reduced temperature and a solids content from 10 percent to 40 percent by weight. Flashing of the polymer solution preferably occurs at a temperature at least 20 DEG C higher than the crystallization temperature of the concentrated polymer solution. The concentrated polymer solution can be prepared adiabatically and can be subsequently finished in conventional polymer recovery units without increasing the risk of gel formation.
申请公布号
WO9932525(A1)
申请公布日期
1999.07.01
申请号
WO1998US27363
申请日期
1998.12.23
申请人
THE DOW CHEMICAL COMPANY;TAU, LI-MIN;SWINDOLL, ROBERT, D.;KAO, CHE-I.;JAIN, PRADEEP