Bazan Group’s crude unit No. 3—not designed by any of the authors’ companies—was bottlenecked by the preflash tower.
Bazan Group’s crude unit No. 3—not designed by any of the authors’ companies—was bottlenecked by the preflash tower. The tower experienced frequent episodes—especially with light crudes (high naphtha percent)—in which the naphtha stream leaving the tower turned dark, accompanied by a high tower ∆P. Most likely, these episodes originated from crude entrainment and restricted the throughput of the entire crude unit.
From the lowest downcomer, a 4-in. pipe drains the liquid into the top shed deck. During two recent outages, the 4-in. pipe was found broken and falling, with a hole in the seal pan from which it originated. As the pipe was in front of a high-velocity feed entry, it was likely tha
Log in to view this article.
Not Yet A Subscriber? Here are Your Options.
1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.
2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.
3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription. For information about group rates or multi-year terms, contact email Peter Ramsay or call +44 20 3409 2240*.
*Access will be granted the next business day.