Huels Butene-1 Separation Process
Raffinate-2 is derived from steam cracker crude C4S by the removal
or conversion of butadiene and isobutylene. This Raffinate-2 feedstock
can be sent through a Huels Butene-1 Separation process unit to produce
high purity butene-1. Butene-1 is most widely used as a co-monomer
for polyethylene production (LLDPE and HDPE), and also for polybutene-1
production.
The separation of the different C4 components by fractionation is fairly difficult.
A two-column approach is used in the Huels Butene-1 Separation process. The
first column removes normal butane and butene-2 in the bottom and sends the
butene-1 and light ends overhead. The butene-1 is then taken as the bottoms
product in the next column. These columns are rather large, containing approximately
200 trays.
Traditionally, in a large plant each column had to be built with two shells
because of their height. Today, thanks to UOP’s MD trays, the columns
can fit into one shell, providing you with a significant cost savings. UOP
has a proven track record of success in designing and operating these columns.
To find complementary products and services, click on the following links:
Huels SHP-CB Process
Heat & Mass Transfer Equipment
Basic Engineering Design
Plant Startup Services
Tech Support Services
Training
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