Modify your vacuum-tower transfer line to increase benefits
Designing the vacuum unit is a challenge. Revamping the transfer line can make this unit more profitable
Tougher economic conditions challenge refiners to be
profitable under severe situations. In refineries, vacuum units
greatly impact profitability. For the vacuum unit,
profitability largely depends on product yields and unit run
length. Many published articles provide valuable guidelines on
how to operate to obtain higher yields and longer run lengths.
These articles mostly discussed the vacuum tower critical
sections.1 However, there are economic opportunities
in debottlenecking the vacuum transfer line. The transfer line
is one of the important critical sections on a vacuum unit. We
will discuss the effects of the transfer line on the vacuum
tower operating conditions and products yields and
specifications, as well as modifications to achieve more
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