Distillation: Conquer Column Challenges

Readers suggest a variety of steps to address multiple issues

distillation challenges mn

This Month’s Puzzler We are experiencing some startup problems in our distillation train, which consists of three towers. When we start up the plant, the product from the reboiler of the second tower is hotter than desired, which delays the overall plant startup. Our condenser load is too high at this time. What is causing these issues and how can we address them? In addition, during a turnaround, we mixed up the wiring on the three reboiler product pumps. We’re now working on a control-system-migration project and need to quickly sort out the wiring problem with the pumps to avoid a long startup. What should we do? Lastly, we replaced the condenser thermal control…

Full Story

Don't Miss These Online Exclusives

The CP 50

cp50 thumb50 companies that play a key role in trends and developments in the chemical industry. Visit the roster and learn more.

Monthly Poll

How much do you think staff complacency affects your site's process safety efforts? Vote now.

Ask the Experts

Tap authorities on a wide variety of processing-related subjects, and read answers to hundreds of questions. Ask the experts.

Webinars

Myriad chemical-industry topics delivered 60 minutes at a time. Check them out.

cartoon 160407 100 120Comical Processing Cartoon

Our pal Jerry King, award-winning artist, provides the cartoon. We want you to pen the funny captions. Submit your caption now.

CP SSG 2016 feature2016 Supplier Source Guide Directory

An easy-to-use guide to help locate suppliers to the chemical, petrochemical and refining industries. Check it out.

Editor's Take

2016 Salary And Job Satisfaction Survey Results


Readers gave us great insight into what it’s like to work in the chemical industry and what engineers are struggling with daily. They also told us what they earn. Check it out. Check it out.

Traci Purdum, Senior Digital Editor
tpurdum@putman.net

Most Recent

  • Bio-based Isobutanol Beckons

    By Chris Ryan, Gevo, Inc

    As the ethanol industry evolves, more plants are seeking ways to increase their product slate and margin. One option is manufacture of isobutanol and its derivatives including octane, jet fuel blendstock and other drop-in hydrocarbons. Commercial production of bio-based isobutanol, alongside…

    Full Story
  • Distillation: Conquer Column Challenges

    This Month’s Puzzler We are experiencing some startup problems in our distillation train, which consists of three towers. When we start up the plant, the product from the reboiler of the second tower is hotter than desired, which delays the overall plant startup. Our condenser load is too high at…

    Full Story
  • Pick the Proper Valve

    By Amin Almasi, rotating equipment consultant

    Valves handle a wide variety of functions related to liquids and gases — turning flow on or off, controlling flow rate, and preventing reverse or back flow, as well as regulating and relieving pressure. Valves fall into two general classifications — linear (such as a gate valve) or rotary (such…

    Full Story
  • Chemical Safety Board Opens Up

    By Vanessa Allen Sutherland, U.S. Chemical Safety Board

    February 11, 2016, marked my six-month anniversary as chairperson and CEO of the U.S. Chemical Safety Board (CSB) — the independent federal agency responsible for investigating chemical accidents to prevent similar incidents in the future. Despite its small size — just 40 people with an…

    Full Story
  • Technology Buoys Water Treatment

    By Seán Ottewell, Editor at Large

    Water treatment has changed from being almost an afterthought into a critical issue for many chemical makers. For instance, companies such as Dow and Air Products have set ambitious water-conservation goals. In addition, Dow and BASF, both of which not only operate large plants but also produce…

    Full Story
  • Solids Processing: Prevent Problems with Fine Particles

    By Tom Blackwood, contributing editor

    One of the biggest problems encountered in solids processing is sampling particulate solids containing fine particles. Individual particles may differ in chemical composition as well as in physical size and shape. While many vendors offer equipment to address these issues, somehow designers of a…

    Full Story

Latest Products