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

Displaying 61 - 80 of 277 stories.
October 1, 2011
The latest version of this company’s Puron membrane bioreactor (MBR) filtration modules allows a possible 25% increase in capacity over the previous version. The Puron...
September 1, 2011
I was having a “wallflower moment” after Ms. Ruth Sands’ excellent troubleshooting presentation at the March AIChE meeting. That presentation was well summarized by Editor in Chief, Rebekkah Marshall in the April issue of CE (p. 5). I wanted to tell Ms. Sands, and the other meeting attendees, about my solvents column troubleshoot. Here’s the story: On this particular troubleshoot...
September 1, 2011
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...
September 1, 2011
Among the challenges of effective solid-liquid filtration is the accumulation of solids on the filter surface, which creates an increasingly dense mass that process fluid must push through. In many applications in the chemical process industries (CPI), a step-down filtration approach has the potential to avoid this difficulty, and at the same time, to cut operating costs and improve solution clarity. Even...
September 1, 2011
Good agitated Nutsche filter dryer performance relies heavily on the agitator design. The design of this companys agitator has a series of sharp curved blades with spaces at...
August 1, 2011
The new ZCore depth cartridge filter is said to offer improved performance, less downtime and reduced operating costs. The ZCore is especially suited for extreme applications where traditional cartridge...
July 1, 2011
Engineers working in the chemical process industries (CPI) sometimes have to deal with aerosol contamination issues in which liquid-gas coalescers are routinely employed. For example, liquid-gas coalescers are used to protect compressors, liquid-gas contactors, turbines, low-NOx burners, metering and instrumentation stations, and for many other applications. Choosing the right coalescer type can be a...
July 1, 2011
Crystallization is a key purification technique for various sectors of the chemical process industries (CPI). Several approaches for industrial crystallization have evolved over time, and highly specialized crystallizer designs have been developed, especially in long-established industries. Solution crystallization is an important unit operation because the process can generate high-purity products from...
July 1, 2011
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...
July 1, 2011
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...
July 1, 2011
DriBoss evaporation equipment is designed for mining, water-treatment and oil-and-gas applications. The efficient DriBoss wastewater evaporator is...
July 1, 2011
A new hollow-fiber membrane system, Targa II HF (photo), offers a cost-effective, safe, high-quality water solution for a variety of ultrafiltration applications, from drinking water to seawater pretreatment...
June 6, 2011
Westec Environmental Solutions, LLC (WES; Chicago, Ill.; announced today that Spanish utility company Iberdrola, through Perseo, has chosen to invest in WES for its carbon capture technology. Iberdrola, a one-hundred-year-old company with operations in Europe, Latin America and the U.S., is the fifth largest utility and the largest renewable energy operator in the world. Iberdrola...
June 1, 2011
So I called my son, Steve, and I asked him, “Which course sounds better to you, ‘Dealing with Difficult People’ or ‘Unacceptable Employee Behavior’?” Steve is a human resources specialist at a 2,000-employee company. He is not a member of the AIChE, but is instead a member of the ACHE, the American College of Healthcare Executives. Proof that the apple does not fall far...
June 1, 2011
A common practice in the chemical process industries (CPI) is to implement so-called value- maximization projects (VMP) to increase production or reduce production costs in order to increase profit margins. With such projects, one main objective of the design team is to incur minimum capital expenditures. Because most VMPs aim to increase throughput or production yield, many such projects involve changes...
June 1, 2011
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...
May 18, 2011
The TARGA II HF, a new hollow-fiber ultrafiltration system, features an optimized cartridge and rack arrangement that results in one of the smallest-footprint products currently available. TARGA II HF fibers are ideally suited...
May 1, 2011
Raise your hand if you ever regretted going with the low cost bidder. Keep your hand raised if the low cost bidder ever yielded you the highest cost result. If your officemate is staring at you quizzically, pretend to be working out the shoulder kink that originated two evenings ago when you played racket ball with the vice president of human resources at the gym. Distillation columns at Fractionation...
May 1, 2011
Syrris In March, this firm signed an exclusive agreement with Prosonix. By combining Prosonix’s ultrasound technology with the Atlas jacketed reactor platform, the Atlas...
May 1, 2011
Designed for new or existing separator and distillation tower operations, the Uniflow Inlet Diffuser can correct flow imbalances and improve gas...
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