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

Displaying 221 - 240 of 289 stories.
March 15, 2008
An understanding of instrumentation is valuable in evaluating and troubleshooting column performance Instrumentation is critical to understanding and troubleshooting all processes. Very few engineers specialize in this field, and many learn about instrumentation through experience, myth and rumor. A good understanding of the various types of instrumentation used on columns is a valuable tool for engineers...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Feature-Report-Column-Instrumentation-Basics_3729.html
March 15, 2008
Rohm and Haas Co. (Philadelphia, Pa.; edlinks.che.com/7370-578)and Novasep (Nancy, France; edlinks.che.com/7370-579) are forming an exclusive alliance to market and sell...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/ion_exchange/Chementator-Purifying-glycerol_3747.html
March 15, 2008
Separation by a membrane is achieved by creating a boundary between different bulk gas or liquid mixtures. As different solvents and solutes flow through a membrane at different rates, separation is achieved. Here, we will focus on three filtration techniques: microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). These processes are characterized by the size of the particle that can be...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Facts-at-Your-Fingertips-Membranes_3722.html
March 15, 2008
Ateam of researchers at the U.S. Department of Energy’s Argonne National Laboratory (ANL, Argonne, Ill.; edlinks.che.com/7370-568) has developed a membrane capable of producing olefins from alkanes, and reducing wasted energy and pollutants while improving selectivity and yield. Steam cracking, or pyrolysis, has long been the widespread production method for olefins including ethylene, propylene, and...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Ceramic-ethane-to-ethylene-membrane-could-replace-pyrolysis_3740.html
February 15, 2008
Hitachi Zosen Corp. (Hitz; Tokyo, Japan; edlinks.che.com/7369-531) is commercializing a new membrane for a hybrid-distillation system (HDS) that is especially suitable for dehydrating ethanol and isopropanol. The HDS can produce 99.7 vol.% ethanol from ethanol-water mixtures with 10 vol.% H2O at a dehydration rate of 50 kg/m2/h/atm (at 130°C), which is more than two times higher than conventional...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-New-ceramic-membrane-system-doubles-rate-and-slashes-cost-for-dehydrating-ethanol_3682.html
February 15, 2008
Transfield Services Ltd. (edlinks.che.com/7369-549) and WorleyParsons Ltd. (both North Sydney, Australia; edlinks.che.com/7369-550) have been selected to construct two mobile-desalination units (MDU) for contingency use in the Brisbane River. The project is expected to provide 100-million...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Desalination-barges-based-on-reverse-osmosis_3694.html
February 6, 2008
As of February 1, the Swiss firms Sulzer Chemtech Ltd. (Winterthur; www.sulzerchemtech.com) and Kühni AG (Allschwil; www.kuhni.ch) will work closely together in the field of extraction. The goal of this co-operation is to develop comprehensive solutions for the complex task of packed liquid-liquid extraction (LLE) columns, from pilot tests to industrial...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Sulzer-Chemtech-and-Kuhni-collaborate-on-LLE_3654.html
January 15, 2008
Mitsubishi Heavy Industries, Ltd. (MHI; Tokyo, Japan; edlinks.che.com/7368-533) is marketing a new process that captures carbon dioxide from flue gas (FG) for enhanced oil recovery (EOR). The KM-CDR process uses a proprietary amine-based solvent (KS-1) in a packed column to absorb and regenerate CO2 with less energy than conventional CO2 -recovery processes and with "far less" solvent loss...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/absorption/Chementator-This-CO2-Recovery-Process-Set-to-Enhance-EOR_3614.html
December 15, 2007
Ethanol production is an energy-intensive process in which about 50% of the cost is for distillation and dehydration of the ethanol. A membrane system that does the same job, but reduces the energy consumption by up to 50%, has been developed by Vaperma Inc. (St-Romuald, Quebec; Canada; edlinks.che.com/6902-533). The method was described by Christian Roy, vice-president, business development, at the Annual...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Chementator-Membrane-Cuts-the-Cost-of-Ethanol-Dehydration-_3575.html
December 15, 2007
A plastic membrane that allows CO2 and other small molecules to move through its pores while largely preventing the movement of larger molecules like CH4, has been developed by a team of researchers from CSIRO Materials Science and Engineering and the Water for a Healthy Country Flagship (Melbourne, Australia; edlinks.che.com/6902-537); the Center for Energy and Environmental Resources, the Department of...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Chementator-This-Membrane-Mimics-Mother-Nature-to-Separate-CO2_3579.html
December 14, 2007
HPD (Plainfield, Ill.; www.veoliawater.com HPD — a Veolia Water Solutions & Technologies company — has been awarded the supply of crystallization and evaporation equipment to TETRA Technologies, Inc. for their new facility located near El Dorado, Arkansas. The new plant will process brine solution from production wells to produce high-quality calcium chloride in both a liquid and a dry...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/crystalization/HPD-to-supply-technologies-for-brine-production-facility_3543.html
November 15, 2007
Last month at Weftec.07, the Annual Water Environment Federation Technical Exhibition and Conference in San Diego, Nihon Genryo Co., Ltd. (Kanagawa, Japan; edlinks.che.com/6901-534) launched for the first time to the North American market its Saito Tank, a granular water filtration system that never requires filter media replacement. Since...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Japanese-water-treatment-filter-enters-U-S-market-boasting-no-need-to-replace-granular-filter-media-ever_3502.html
November 15, 2007
Within five years, four large power plants in Europe will be outfitted — for testing at the pilot scale — with energy-efficient CO2-filtering membranes that are being developed at the Norwegian University of Science and Technology (NTNU; Trondheim; edlinks.che.com/6901-531). Professor May-Britt Hägg, head of the membrane research group (MEMFO) at NTNU’s chemical engineering...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/This-membrane-could-reduce-the-carbon-footprint-for-combustion-power-plants_3504.html
October 1, 2007
Lanxess (Leverkusen, Germany; edlinks.che.com/6900-543) has won a large contract to supply ion-exchange resins to Goro Nickel S.A.S. (Noumé, New Caldedonia), which will use the resins in future mining operations. Goro...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/ion_exchange/Ni-from-South-Pacific_3386.html
September 1, 2007
BP Alternative Energy (Sunbury, (U.K.; edlinks.che.com/6899-544) and Powerspan Corp. (Portsmouth, N.H.; edlinks.che.com/6899-545) are collaborating to develop and commercialize Powerspan’s carbon dioxide capture technology, called...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/CO2-capture_3358.html
September 1, 2007
Mitsubishi Materials Corp. (edlinks.che.com/6899-535), with the project support of Petroleum Energy Center, Japan, (both Tokyo), has developed a new thermal process that uses supercritical (SC) water to crack vacuum distillation residue oil (VR) into clean, lighter oil with a high yield. The lighter oil products from the new process have less metal impurities than alternative cracking processes and the...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Supercritical-water-cracks-residue-oil_3360.html
September 1, 2007
    Fouling is one of the most vexing problems in water-treatment systems that use membranes to remove suspended and dissolved particles. The deposition and accumulation of these substances on membrane surfaces inevitably lead to loss of performance for the membrane [1]. While there are several strategies for reducing fouling, the right solution varies with the process and type of fouling.  ...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Strategies-for-Controlling-Membrane-Fouling_3364.html
September 1, 2007
    Kermit the Frog once said, “It isn’t easy being green.” While this may be true, industry is still making the effort. Both in the U.S. and abroad, processors are not only striving to produce environmentally friendly products, but also are becoming more mindful of the impact of their operations. More often than not, cleaning up both products and processes requires the use of...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/The-Green-Revolution_3366.html
September 1, 2007
Hollow-fiber membrane tubes that are selectively permeable to oxygen have been constructed by researchers from the School of Chemical Engineering and Advanced Materials at Newcastle University (edlinks.che.com/6899-542), in collaboration with the Chemical Engineering Dept. at Imperial College London...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/O2-permeable-ceramic_3348.html
August 1, 2007
    In multicomponent systems, equation-of-state (EOS) methods generally do a good job of determining vapor-phase properties. But accurate determination of properties for the liquid phase is much more difficult, especially when the liquid contains dissimilar molecules, polar molecules such as alcohols and glycols, or acid gasses such as H2S and CO2.   In this article, a multicomponent system...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/VLE-Calculations-in-Multicomponent-Systems_3138.html
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