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Displaying 121 - 140 of 142 stories.
July 1, 2006
Materials of Construction for Low-Temperature and Cryogenic Processes
    Trends in the worldwide chemical process industries, especially a steep rise in the compression and liquefaction of gases to lower the costs of their storage and transportation, have heightened the engineer's need to have a working familiarity with chemical-process operation at low (nominally, below 0°C) and cryogenic (below –100°C) temperatures. In addition to natural gas...
http://www.che.com/processing_and_handling/engineering_materials/Materials-of-Construction-for-Low-Temperature-and-Cryogenic-Processes_2782.html
July 1, 2006
Plastic pipe proves itself after three years of service
Although polymer-based piping systems have been used in the chemical process industries (CPI) for decades, the global market share is only around 10%, says Stephan Schuessler, head of technology and R&D at Georg Fischer DEKA GmbH (GF DEKA; Dautphetal, Germany; edlinks.che.com/6514-537). The main reason for the low acceptance of polymer versus metallic materials is because polymers are still...
http://www.che.com/processing_and_handling/engineering_materials/Plastic-pipe-proves-itself-after-three-years-of-service_2971.html
July 1, 2006
New polymers improve the repair of knee cartilage
A traditional treatment for damaged knee cartilage is called autologous chondrocyte implantation (ACI), whereby healthy cartilage-forming cells are taken from an undamaged site of the patient and injected to the damaged site. This procedure takes many weeks, during which time, the patient requires mechanical support, such as crutches. A new procedure, under development...
http://www.che.com/processing_and_handling/engineering_materials/New-polymers-improve-the-repair-of-knee-cartilage_2973.html
July 1, 2006
New olefin-block copolymers
Dow Chemical Co. (Midland, Mich.; edlinks.che.com/6514-541) has launched Infuse olefin-block copolymers (OBC), a new family of olefin elastomers, which deliver improved properties (including abrasion resistance and high-temperature performance), and processing capabilities (such as faster set-up in processing...
http://www.che.com/processing_and_handling/engineering_materials/New-olefin-block-copolymers_2974.html
June 1, 2006
Chementator: A new coating for steel
Researchers at Pacific Northwest National Laboratory (PNNL; Richland, Wash.; edlinks.che.com/5830-537) have developed a ceramic-based coating for steel and superalloys that prevents corrosion, oxidation, carburization and sulfidization, which commonly occur in gas, liquid, steam and other environments. The low-cost, easy-to-apply...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-coating-for-steel_2953.html
June 1, 2006
Chementator: This biodiesel reactor is made of duplex
Although many new biodiesel plants are sprouting up around the world, Perstorp Oxo AB’s (Stenungsund Sweden) 160,000 m.t./yr rapeseed-methyl-esters (RME) facility, now under construction at Stenungsund, will be the first to have a reactor made from...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-biodiesel-reactor-is-made-of-duplex_2957.html
June 1, 2006
Chementator: Surface treatment
NexGen Technologies, LLC (Farmington Hills, Mich.; edlinks.che.com/5830-552) has commercialized a next-generation of engineered surface treatments that imparts wear-resistance...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Surface-treatment_2964.html
June 1, 2006
Newsfront: Monitoring Corrosion Online and in Realtime
Corrosion has the chemical process industries seeing red in their metal tanks and pipelines — and on the bottom line, too. In the U.S., for example, chemical, petrochemical and pharmaceutical producers incur direct costs of $1.7 billion/yr for corrosion, or 8% of capital expenditures, and that does not include costs for operations and maintenance. All totaled, reports the National Association of...
http://www.che.com/processing_and_handling/engineering_materials/Newsfront-Monitoring-Corrosion-Online-and-in-Realtime_3075.html
May 1, 2006
Don’t Overlook Composite FRP Pipe
    There are several reasons why composite fiberglass-reinforced-plastic (FRP) pipe has been replacing conventional pipe, and why this still relatively new material (see box, p. 46) should be kept in mind whenever piping is being specified for a new or a revamp project. Engineers involved with specifying or using FRP pipe should have a clear understanding of its nature and properties. A good...
http://www.che.com/processing_and_handling/engineering_materials/Dont-Overlook-Composite-FRP-Pipe_2799.html
April 1, 2006
Metals-‘free’ H3PO4 is now available off the shelf
A new phosphoric acid that contains less than 100 parts per billion of 30 different metal ions is now commercially available from Febex S.A. (Box, Switzerland; edlinks.che.com/5828-539), the phosphorous specialties subsidiary of CECA Arkema Group (Paris). The new grade of H3PO4, called IMAX 100, was developed for the electronics industry, including chip and semiconductor etching, in which the slightest...
http://www.che.com/processing_and_handling/engineering_materials/Metals-free-H3PO4-is-now-available-off-the-shelf_2927.html
April 1, 2006
A new metal nitride
Using a diamond anvil cell to create high (up to 50 GPa) pressures, and a laser to create high (up to 2,000 K) temperatures, researchers from Lawrence Livermore National Laboratory (LLNL; Calif....
http://www.che.com/processing_and_handling/engineering_materials/A-new-metal-nitride_2930.html
March 1, 2006
Chementator: An improved PC resin
PolymersNet Co. Ltd. (Seoul, South Korea; edlinks.che.com/5827-548) and Cyclics Corp. (Schenectady, N.Y.; edlinks.che.com/5827-549) announced the first commercial application of CBT (cyclic butylene terephthalate) resin...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-An-improved-PC-resin_2906.html
March 1, 2006
Chementator: This packing material keeps produce moist, while preventing water contact
A patented moisture-control technology (MCT) developed by CSIRO Plant Industry (edlinks.che.com/5827-534), with cooperation from Stellar Films Group (both Melbourne, Australia; edlinks.che.com/5827-535), has shown it can maintain field freshness of selected fruit and vegetables during extended periods of storage and shipping. In a recent export trial of oranges to the U.S., the MCT liner not only...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-packing-material-keeps-produce-moist-while-preventing-water-contact_2909.html
March 1, 2006
Chementator: Slash water and energy requirements with this dyeing process
The conventional way to dye textiles is by the so-called dip process, whereby cloth is first immersed into a vat of the dying medium, then removed and dried. The dye is then thermally fixed to the textile by heating to 150°C, and the excess dye removed by washing and drying steps. These wash and dry steps use large volumes of water, which then becomes contaminated with dye, and the drying and fixing...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Slash-water-and-energy-requirements-with-this-dyeing-process_2911.html
February 1, 2006
Chementator: Improved catalysts are now ready for hydrotreating petroleum fuel
Haldor Topsøe (Lyngby, Denmark; edlinks.che.com/5826-533) has introduced two new hydroprocessing catalysts, which are based on its proprietary BRIM technology. Both catalysts are nickel-molybdenum types that optimize both hydrogenation at so-called brim sites (situated on the basal-plane of the catalyst) and the Type II active sites (edge sites) for direct...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Improved-catalysts-are-now-ready-for-hydrotreating-petroleum-fuel_2886.html
February 1, 2006
Chementator: Nanotubes
Scientists at the Lawrence Livermore National Laboratory (Calif.; edlinks.che.com/5826-549), Boston College (edlinks.che.com/5826-550) and MIT (both...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Nanotubes_2888.html
February 1, 2006
Chementator: Starch-based additives improve paper quality, reduces weight
The Technical Research Center of Finland (VTT; Rajamäki; edlinks.che.com/5826-542) has developed a process to make natural paper additives from starch, which can be used for making high-quality paper that is completely recycleable. The starch-based pigments can be used in conventional papermaking processes instead of inorganic minerals (such as clay, talc, carbonates) for fillers, and instead of...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Starch-based-additives-improve-paper-quality-reduces-weight_2895.html
February 1, 2006
Chementator: Improved rubber
Teijin Twaron B.V. (Arnhem, Netherlands; edlinks.che.com/5826-556) has introduced a new rubber compound ingredient, tradenamed Sulfron 3000, which leads to a 20% improvement in rolling resistance when used in tires — resulting in a 5% reduction in fuel consumption...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Improved-rubber_2897.html
January 1, 2006
Chementator: A new anode may double the energy density of Li-ion batteries
Using lithium metal as the anode of secondary Li-ion batteries would double the energy density of conventional batteries, which use anodes based on carbon. However, Li-based anodes suffer from the problem of dendrite crystal formation during the charge and discharge cycles of the battery. The needlelike projections of these dendrite crystals can result in short...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-anode-may-double-the-energy-density-of-Li-ion-batteries_2869.html
January 1, 2006
Chementator: Semi-renewable plastic
BASF AG (Ludwigshafen, Germany; edlinks.che.com/5825-546) has developed a biodegradable plastic that contains 45% polylactic acid, a biodegradable polymer made from corn (CE, November 2003...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Semi-renewable-plastic_2871.html
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