September 2010

Special Report: Refining Developments

Improve vacuum tower revamp projects

A ‘balanced approach’ investigates separation of vapor and liquids in the flash zone/wash section design

Costanzo, S., Pilling, M., Wong, S. M., Sulzer Chemtech USA, Inc.

Revamping an existing vacuum column to operate at a higher feedrate, higher flash zone temperature, lower pressure and different feedstock characterization is a complex task. It requires reviewing the column design with respect to the revamp conditions and identifying suitable solutions to reliably operate at the new conditions. Unless all of the design and operating aspects work together in unison, the net result will be, at best, less than optimum, and at worst, a very costly problem. To get a complete view of the flash zone operation, we must also take into account all the peripheral regions, including the heater, transfer line, inlet nozzle, inlet feed device, stripping section, and the

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 J'Nette Davis-Nichols at or +1 713.520.4426*.

*Access will be granted the next business day.

Related Articles

From the Archive



{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}