March 2005

Special Report: Instruments and Networks

Improved valve sizing for multiphase flow

HNE-DS method is based on an expansion factor similar to the gaseous media to account for changes in mixture density

Kiesbauer, J., Samson AG; Diener, R., BASF AG; Schmidt, J., c/o BASF AG

Control valves are frequently used in chemical and petrochemical plants to control medium mixtures that comprise a gas/ vapor phase as well as a liquid phase as they enter the valve. The IEC 60534-2-1 Standard is primarily applied to calculate the required valve flow capacity (Cv or kv coefficient) for single-phase media in the form of gases or liquids. However, this standard does not apply to multiphase flow. A standardized sizing model does not exist even in literature. As a consequence, plant operators and manufacturers employ various published methods according to their own experience, which may lead to considerably different results depending on the operating and medium data involved.

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. $399 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 Jnette.Davis-Nichols@GulfEnergyInfo.com or +1 713.520.4426*.

*Access will be granted the next business day.

Related Articles

From the Archive

Comments

Comments

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