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

Displaying 1 - 20 of 111 stories.
February 1, 2010

Many reactions, extractions, separations and other operations in the chemical process industries (CPI) involve the use of organic solvents. In addition to handling and disposal issues, organic solvents can pose a number of environmental concerns, such as atmospheric and land toxicity. In many cases, conventional organic solvents are regulated as volatile organic compounds (VOCs). In addition, certain organic solvents are under restriction due to their ozone-layer-depletion potential. Supercritical carbon dioxide is an attractive alternative in place of traditional organic solvents.

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http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Supercritical-CO2-A-Green-Solvent_5449.html
February 1, 2010
A survey of tower failures [ 1 ] ranks kettle reboilers as the most troublesome reboiler type in the chemical process industries (CPI). Excessive pressure drop in kettle reboiler...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Kettle-Troubleshooting_5453.html
February 1, 2010
Researchers from the Center for Membrane Technology, Beijing University of Technology (China; www.bjut.edu.cn) have developed a new spiral-wound membrane module for use in...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Oxygen-separation-membranes-made-in-China_5441.html
October 1, 2009

Besides the capital costs of a filter, there are additional factors that affect overall filtration economics, namely: (a) design considerations and options, (b) process requirements, (c) maintenance requirements, (d) maintenance procedures, (e) mean-time-between-changeout (MTBC) costs, and (f) disposal costs. This article outlines basic design issues, discusses selection considerations, and presents a cradle-to-grave cost analysis of bag and cartridge filtration.

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http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/filtration/Estimating-the-Total-Cost-of-Cartridge-and-Bag-Filtration_5161.html
September 17, 2009
In an agreement with Raschig GmbH (Ludwigshafen, Germany) announced Sept. 16, UOP (Des Plaines, Ill.) has acquired exclusive rights to offer Super-Pak equipment for all UOP process...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/UOP-to-offer-Raschig-Super-Pak-structured-packing-equipment_5074.html
August 1, 2009
Successful adsorber design requires information about certain adsorbent properties, including: adsorbent densities and void fractions; isotherms or other equilibrium data; and data on mass-transfer kinetics and fixed-bed dynamics. This one-page reference sheet explains adsorbent properties and provides commonly used equations....
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/adsorption/Adsorption_4990.html
August 1, 2009
A team from the School of Chemical Sciences and Engineering, at the University of New South Wales (Sydney, Australia; www.unsw.edu.au), has developed a process for the micronization of...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/crystalization/Making-fine-particles-of-inhalable-drugs_4962.html
July 1, 2009
“When you improve the efficiency or capacity of a product, it almost always can be used to improve the process economics with respect to investment costs or operating...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Separation-More-More-More_4928.html
July 1, 2009
Advanced Membrane Technologies and Applications Edited by Norman N. Li. Wiley. 111 River St., Hoboken, NJ 07030. Web: wiley.com. 2008. 994 pages. $150.00. Reviewed by Peter S...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Advanced-Membrane-Technologies-and-Applications-reviewed-by-Peter-S-Cartwright_4909.html
July 1, 2009
The Electric Power Research Institute (EPRI, Palo Alto, Calif.; www.epri.com) has signed an agreement with Air Products (Allentown, Penn.; www.airproducts.com) to support the...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Scaleup-is-set-for-an-air-separation-membrane_4917.html
June 1, 2009
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information A new correlation that matches most commercial trays The sieve tray has...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Dry-Tray-Pressure-Drop-Of-Sieve-Trays_4816.html
April 1, 2009
Aqueous Recovery Resources, Inc. (ARR; Bedford Hill, NY; www.suparator.com), has developed the Suparator, an oil/water separation system that involves no moving parts or media, for low...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Reduce-process-consumables-with-this-new-separator_4672.html
April 1, 2009
With the exception of Oslo-type crystallizers, the main commercial crystallizers are agitated systems that use an agitator [agitated tank or draft-tube baffle (DTB)] or a circulation...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/crystalization/Chementator-This-new-crystallizer-reduces-damage-to-larger-crystals_4670.html
March 1, 2009
Membrane polymers are packaged into a configuration, commonly called a device or an element. The most-common element configurations (figure) are tubular, capillary fiber, spiral wound, and plate and frame....
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Membrane-Configurations_4565.html
February 13, 2009
Coalescers of type Phase Separator PT 800 and PT 500 were developed for an application to separate micro droplets of hydrochloric acid from silicone oil, and vise versa. The pressure...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Separate-droplets-as-small-as-1-micrometer-in-diameter_4536.html
February 12, 2009
CeraMem ceramic membranes are a proprietary technology platform provides ceramic membrane performance at comparable lifecycle costs to polymeric membranes. The design, which is a...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Operate-under-harsh-conditions-with-ceramic-membranes_4528.html
February 12, 2009
Septron Bio-Safe is said to be the world’s first electro-deionization (EDI) module with an integrated membrane stage. It is based on proven and patented spiral-wound technology and...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/This-EDI-module-also-has-a-membrane-stage_4533.html
February 1, 2009
For separating two components with similar volatilities, extractive distillation is typically used, whereby a high-boiling, non-volatile solvent is added to "break the...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Chementator-Progress-on-a-promising-separation-technology_4520.html
January 1, 2009
Here, we present criteria needed for the intelligent, effective specification of trays for a distillation or stripping column....
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Tray-Column-Design_4443.html
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