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

Displaying 41 - 60 of 291 stories.
October 1, 2012
The Pluto mini-desublimator is used to separate substances in applications such as for tank breathing, thereby reducing emissions to the environment, for recovering raw materials or for protection of downstream vacuum generators. Gas comes in contact...
October 1, 2012
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...
October 1, 2012
Installed into Viledon sinTexx filter cartridges, this new corrugated polyester medium with nanofiber lining is said to achieve optimum performance when dealing with fine and difficult-to-handle dust and...
October 1, 2012
The Asia FLLEX (flow liquid-liquid extraction) module is a flow chemistry equivalent to a separating funnel, yet involves no shaking, nor does it rely on gravity. It is suitable for the preparation of samples prior to...
September 1, 2012
The new Rotoform 4G system is the latest generation of this well-known solution for granulating a wide range of chemical melts, including sulfur, waxes, resins and agrochemicals. The Rotoform family now numbers ten different models, each meeting the needs of a...
September 1, 2012
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...
September 1, 2012
This company has equipped several plants for the production of blown film with continuous screen changers of the type K-SWE. The screen changers were equipped with a separate control to...
September 1, 2012
The Model SFT-110 benchtop supercritical fluid extractor is an improved version of this company’s original system. Supercritical fluid extraction is an alternative to traditional...
August 1, 2012
Five new types of Lewabrane membrane-separation elements for reverse osmosis (RO) are now available. As of July, high-rejection (HR) types with membrane surface areas of 370 and 440 ft2, and high-flow (HF) types, with membrane surface areas of 370, 400 and...
July 1, 2012
Where do middle boilers go? If you answered, “Nobody knows”, then you’re wrong. FRI’s Design Practices Committee (DPC) knows — and they’re willing to share. The DPC was formed in 1975. It originally contained just six members. Neil Yeoman was one of the original members. He still participates on the DPC today — as a consultant. Dan Summers, of Sulzer Chemtech, is...
June 1, 2012
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...
May 1, 2012
Every five years or so, a call would come in and once again I would be troubleshooting a certain extraction unit in Canada — usually in the dead of winter. This particular unit had a liquid-liquid extractor, a stripper, a vacuum regenerator and the usual complement of pumps, pipes, valves, vessels, heat exchangers, raccoons and crows. Some of you might remember the extractor from my Crow’s Nest...
April 1, 2012
The approaches currently used by process integration specialists to assess the opportunities for the integration of reboilers are frequently erroneous and lead to proposals that have to be rejected at the detailed engineering stages or worse, to commissioned reboilers that do not perform properly. This article examines the integration of both vertical and horizontal thermosiphon reboilers, and covers the...
April 1, 2012
I will bet that many readers are familiar with a Teddy Roosevelt quote that includes the following: “It is not the critic who counts…the credit belongs to the man who is actually in the arena...” Ralph Weiland has been in the arena for many years, doing chemical engineering work that has benefitted many people. At the Spring AIChE meeting this month (Houston; April 1–5), the...
March 1, 2012
For the first half of my career, I worked in a group that developed, designed and sold distillation trays. Late during the 1970s, half of that group’s business disappeared — almost overnight — when structured packing replaced trays in very large ethylbenzene-styrene vacuum columns. Even the best of trays could not compete with the low pressure drops of structured packings. In 1985, Norton...
March 1, 2012
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...
March 1, 2012
Sterilizing-grade filters from this company have all-metal construction, and can perform filtration that meets the requirements of ASTM standard F838-05 for bacterial retention. The sintered, porous-metal filter...
March 1, 2012
Introduced to the Spanish market last month, the Targa II hollow-fiber ultrafiltration cartridge is suitable for a wide range of ultrafiltration applications, including industrial water...
February 1, 2012
The Larox VPF (vertical pressure filter) is used for the pregnant liquor polishing stage in the alumina process, producing both a high-quality product and a high throughput. Low impurity in pregnant...
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