January 2007

Distillation

How to handle low-liquid loadings

Better tray design techniques reveal dynamics to improve minimum liquid load conditions

Sloley, A. W., CH2M Hill; Summers, D. R., Sulzer Chemtech USA, Inc.

Failure to address minimum liquid-load requirements on trays can cause many operating problems. Minimum liquid-load operation requires special tray features to improve performance. Processing operations that involve wash sections of main fractionators, upper sections of low-pressure distillation towers and separation of high boilers all can lead to tray designs that encounter very low-liquid loads. Several case histories will demonstrate how to design tray towers to operate at optimum levels under difficult service conditions. Background. Most people look at two criteria for standard downcomer trays: Minimum weir loading Spray (blowing) factor. For truncated downcomers, a third

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.

Related Articles

From the Archive

Comments

Comments

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