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  • Distillation is bubbling up

    High capacity utilization is prompting significant efforts to optimize column performance

    Seán Ottewell
  • Ethanol plant boosts output and saves energy

    Implementation of advanced process control for distillation and dehydration steps allowed a Wisconsin plant to meet competing goals.

    Jacob Duke, Badger State Ethanol, and Lina Rueda, Pavilion Technologies
  • Need a tower internal specialist?

    For over 35 years, the Sulzer Chemtech Field Services group has been a successful tower internals specialty company, performing tray and packing installation, tower maintenance and plant turnaround projects.

  • No more turnaround headaches

    After the purchase of Enhanced Separation Technologies, Sulzer Chemtech USA now offers a more complete line of equipment and services for column repairs, maintenance and turnarounds.

    Sulzer Chemtech USA
  • Distillation, Part 5: Multiple Products

    In Part 5 of this series on distillation control and optimization, we find that adding a side-stream component to your process gives an additional degree of freedom, but makes it even more essential to not mismatch the variables.

  • Gamma scanning seeks an inside edge

    Many companies decide not to build up certain capabilities in-house mainly because they don’t have sufficient regular demand for them. Gamma scanning of distillation columns is a case in point, but on-site scanning specialists may be the wave of the future.

    Mike Spear, editor at large
  • Properly deliver compressed gases

    From large petrochemical units to tiny pharmaceutical pilot plants, day-to-day operations depend upon providing compressed gases in a controlled, safe and environmentally conscious manner. Correct gas handling also can improve process efficiency.

    Larry Gallagher, CONCOA
  • Cut column energy consumption

    With increasing energy prices and public sensitivity to energy consumption, many plants are paying more attention to optimizing distillation. Simple and low-risk operational changes often can provide substantial savings.

    Andrew Sloley, VECO U.S.A.
  • Distillation deserves a high profile

    Columns often present abundant opportunities for improvement, says Editor in Chief Mark Rosenzweig in his monthly column.

    Mark Rosenzweig, Editor in Chief
  • Distillation control and optimization, Part 3

    Control's Béla Lipták continues his series on control of distillation processes, this time focusing on managing reboiler flow, temperature, feed rate, loading and reflux for economy, stability and safety.

    Béla Lipták, PE, CONTROL Columnist
  • Column configuration can cripple performance

    The importance of having the inherent capability to meet operating requirements and enable proper instrumentation performance is stressed by Contributing Editor Andrew Sloley.

    Andrew Sloley, contributing editor
  • Separation Technology: Draw Insights on Distillation

    Residue curve mapping is a powerful tool to better understand the design and operation of distillation columns. This article describes how to use residue curve maps to check the feasibility of separation of homogeneous mixtures and for developing the conceptual design of towers.

    Raymond E. Rooks, The Dow Chemical Co.
  • Distillation control and optimization, Part 1

    Control columnist Bela Liptak describes the distillation process and PID-based controls, reviews optimization strategies, and shows how advanced controls can cut operating costs of distillation.

    Béla Lipták, PE, Control Columnist
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