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US09574025B2 Solution polymerization process with improved energy utilization 有权
溶液聚合过程提高了能源利用率

Solution polymerization process with improved energy utilization
Abstract:
A solution polymerization process that consumes less energy comprising: injecting feeds into one or more reactors to form a polyethylene in a single liquid phase, or optionally two liquid phases; deactivating the single or dual liquid phase; a first V/L separator separates the deactivated phase into a first bottom stream and a first overhead stream; the first overhead stream passes to a distillation column and the first bottom stream enters a second V/L separator, forming a second overhead stream and a second bottom stream; the second bottom stream enters a third V/L separator, forming a third overhead stream and a third bottom stream; the third bottom stream passes to polymer recovery; the second and third overhead streams are combined, condensed and purified, forming a purified solvent that is recycled to said reactors.
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