I D
× COMMENTARY
Digitalization Game ChangersGame Changers
The technologies associated with the Industrial Internet of Things, and…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment PDF Separation Processes

An Investigation of Premature Flooding in a Distillation Column

By Henry Z. Kister and Matthew Olsson, Fluor Corp. |

Surprising observations regarding flooding in the upper fractionation trays of an atmospheric crude-petroleum distillation column are investigated In industial distillation processes, flooding is an abnormal, but relatively common, process condition in which liquid accumulates in the column. The accumulation may be caused by excessive upward vapor flow, which results in massive entrainment, or by a restriction in the downcomers, impeding liquid downflow in the column. Flooding usually results in dramatically reduced separation efficiency, excessive pressure drops and sometimes instability. In many cases, the situation leading to flooding is complicated. Here, the authors present findings from an investigation of flooding in a distillation column at a petroleum refinery that revealed some surprising observations involving the loss of valve floats from the column trays.   Crude tower flooding The investigation centered on an atmospheric crude tower that experienced severe corrosion in the top pumparound (TPA) and upper fractionation trays. The likely cause of the corrosion was the entry of small quantities of water, which hydrolyzed chlorides, forming HCl that caused extensive corrosion and damage to the 410 stainless-steel…
Related Content
Facts at your Fingertips: Distillation
Computer-generated simulations of distillation processes are often validated experimentally. This reference discusses three concepts that influence comparisons between experimental results…

Mettler Toledo

Tunable Diode Laser Spectroscopy in Critical Applications

Accurate and continuous O2 determination plays a pivotal role in achieving safety and process reliability in a wide range of manufacturing processes. Harsh process conditions and maintenance requirements of sampling and conditioning systems can present…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications
Non-Contacting Gas Sensors Minimize the Risk of Corrosion to Plant Equipment.
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production

View More

Live chat by BoldChat