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Archives :: Processing & Handling :: Separation (Liquid-Liquid & Gas-Liquid) :: Distillation

Displaying 1 - 20 of 38 stories.
May 1, 2013
Column internals for efficient separations
For separation columns, this multidisciplinary engineering company offers a high-performance random packing called Cascade Mini Ring, which is also available with a...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Column-internals-for-efficient-separations_10481.html
November 1, 2012
Structured packing for gas-scrubber applications
The GEA 2H MASSdek structured packings have been used for such applications as gas scrubbing, exhaust-air cleaning, desorption (stripping) and rectification. Compared to conventional packings, the 2H MASSdek packings are...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Structured-packing-for-gas-scrubber-applications_9911.html
October 1, 2012
An economical way to distill large volumes of products
The patented Plate Molecular Still is capable of distilling large quantities of product (10 ton/h and more), under medium- or high-vacuum conditions. The system is suitable for applications involving...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/An-economical-way-to-distill-large-volumes-of-products_9814.html
September 1, 2012
An economical way to distill large volumes of products
The patented Plate Molecular Still is capable of distilling large quantities of product (10 ton/h and more), under medium- or high-vacuum conditions. The system is suitable for applications involving...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/An-economical-way-to-distill-large-volumes-of-products_9666.html
June 1, 2012
Distillation: Avoid Problems During Tower Startup
A variety of performance problems can arise in distillation towers during startup. Many are caused by equipment, hardware or process conditions. Hardware issues may be related to instrumentation, tower internals or ancillaries. Instrumentation malfunctions are also common during startup and are predominantly related to liquid level indicators, online analysis of key components and in some cases...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Distillation-Avoid-Problems-During-Tower-Startup_9389.html
March 1, 2012
Distillation Optimization By Vapor Recompression
Distillation is one of the most extensively used operations in the chemical process industries (CPI). It is a highly energy-intensive unit operation, and continuously rising energy costs make it imperative to look for ways to reduce energy requirements. Some energy-saving configurations can increase capital investment costs, so the benefits need to be weighed carefully. Various techniques, such as heat...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Distillation-Optimization-By-Vapor-Recompression_9064.html
September 1, 2011
Reboiler Condensate Drums: Silencing Hydraulic Hammer
Condensate pots are commonly used on the condensing sides of some reboilers, such as those that are heated by steam or refrigerant vapor. These pots provide a liquid seal that prevents uncondensed vapor from blowing out of the reboiler into the condensate system. A break in this seal can result in heat transfer losses. With steam reboilers, blowing vapor into the condensate header may also lead to...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Reboiler-Condensate-Drums-Silencing-Hydraulic-Hammer_8438.html
July 1, 2011
When troubleshooting the extractor
I have an ongoing dispute with a longtime colleague, Bob Miller. I said he ruined my new safety boots. He said he didn’t. Bob was a young, fearless distillation engineer at a time when our extraction engineer refused to take a trip to Japan to inspect new trays going into an old extractor. I called Bob into my office and asked him to take the trip, even with zero extraction experience. Bob accepted...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/When-troubleshooting-the-extractor_8158.html
July 1, 2011
Inspecting Fractionation Towers
Distillation columns are often workhorses in the chemical process industries (CPI), and at times, it is necessary to physically inspect the interior of a column. This article demonstrates what an inspection can reveal, by sharing the experience of actual fractionation-tower inspections in a petroleum refinery. The points mentioned are intended to provide guidance to future tower inspectors, so that they...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Inspecting-Fractionation-Towers_8214.html
June 1, 2011
Column Internals: The Next Big Thing
When it comes to distillation trays and packing, chemical processors require the same criteria they seek from all equipment in this tight economy — technology that will reduce energy use and boost throughput without costly facility expansion. In an effort to meet these needs, tray and packing specialists are improving existing technologies and launching a whole new generation of trays designed to...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Column-Internals-The-Next-Big-Thing_8103.html
May 1, 2011
Improve separator performance with this inlet diffuser
Designed for new or existing separator and distillation tower operations, the Uniflow Inlet Diffuser can correct flow imbalances and improve gas...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Improve-separator-performance-with-this-inlet-diffuser_7905.html
April 1, 2011
‘I do not believe in entrainment’
It was the Dr. James R. Fair Heritage Distillation Symposium at the Chicago AIChE meeting last month. I had decided to finally give a presentation about something that has been bugging me since October 28, 1974, my first day as a practicing chemical engineer. “Regarding distillation trays, I do not believe in entrainment. I believe that I am at least 50% correct.” I had the audience’s...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/I-do-not-believe-in-entrainment_7730.html
April 1, 2011
Distillation Back Mixing: Impact on Batch Yields
Manufacturers of specialty chemicals are routinely required to reduce costs and increase the production of their high-value products. Specifically, competitive pressures from the developing world, increases in raw material costs and volatility in energy costs are putting significant pressure on manufacturers to minimize processing costs and maximize product yields. The economic impact of optimization...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Distillation-Back-Mixing-Impact-on-Batch-Yields_7781.html
March 1, 2011
FRI’s parallel projects
Considering that Fractionation Research, Inc. (FRI) has been performing distillation research since 1954, don’t we have all the answers yet? Not according to the membership. The vendors of trays and packings have had very aggressive R&D programs. New and interesting products have appeared annually. In addition to the testing of such products in hydrocarbon service and at commercial diameters, the...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/FRIs-parallel-projects_6434.html
January 1, 2011
Reboiler Circuits For Trayed Columns
The reboiler generally supplies most of the energy required to effect component separation. If too much heat is supplied, the tower may flood; conversely, if too little heat is available, separation performance may decrease via poor reflux ratio (pinching), excessive weeping or poor tray action. Proper design of reboiling systems involves coordinating aspects both outside and inside the tower. This article...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Reboiler-Circuits-For-Trayed-Columns_6291.html
October 1, 2010
Zarko’s challenge
Every distillation engineer west of the River Neretva is familiar with the work of Professor Zarko Olujic. His distillation laboratory at the Technical University of Delft (The Netherlands; www.tudelft.nl) is one of the largest and best facilities in the history of distillation. His work is typically funded by a consortium of companies that, most recently, included Bayer, BASF, Evonik, DSM, Montz...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Zarkos-challenge_6030.html
July 1, 2010
Seeking out difficult situations
In 1952, 37 companies established Fractionation Research, Inc. (FRI). Most of those original members are now gone or absorbed by other companies. Nevertheless, their goal was to study distillation in columns having diameters and heights that were similar to industrial columns. The columns of the world were getting larger and more numerous and were too often being designed using bench-top apparatuses and...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Seeking-out-difficult-situations_5800.html
June 1, 2010
Distillation Tray Design
In a distillation column tray, vapor passes upward through liquid that is flowing across a horizontal perforated plate. Vapor passing through the perforated plate forms a two-phase mixture with the liquid and enables mass transfer contacting. This mixture is typically quite turbulent. Tray design must allow the turbulent liquid to fall away from the rising vapor in the space above the tray, while also...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Distillation-Tray-Design_5719.html
June 1, 2010
Propelling distillation research
I have 70 supervisors. It sometimes feels like I am pulled in 70 different directions — north, south, east, west, up, down and inside-out. But even after two years at this job, I can still hold my hand steady — if I put it in a vice. Nevertheless, I feel that I have the best job in the distillation world; I am technical director at Fractionation Research, Inc. (FRI; Stillwater, Okla....
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Propelling-distillation-research_5720.html
May 1, 2010
Recognizing a distillation icon
On March 24, at the American Institute of Chemical Engineers’ (AIChE; New York; http://www.aiche.org) Spring Meeting in San Antonio, Tex., the Separations Division honored the myriad contributions of Dr. Karl T. Chuang. Given the scope and impact of his contributions, we are likewise proud to recognize him here. “Very few chemical engineers have spent as much time at as many chemical...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Recognizing-a-distillation-icon_5616.html
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