Offshore Communications
AccountGuest Edition My Account My Che.com Log In

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

Displaying 221 - 240 of 277 stories.
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.che.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.che.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.che.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.che.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.che.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.che.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.che.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.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/VLE-Calculations-in-Multicomponent-Systems_3138.html
August 1, 2007
Crossflow (CF) filtration is widely used for separating substances with poor filtration properties. As the method’s name implies, a crossflow of the feed continuously flows across the filter membrane in order to wash away material accumulations that clog the membrane pores. Nevertheless, conventional methods rely on a pump to adjust the feed overflow rate, which requires substantial energy, even for...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Slash-energy-consumption-with-this-new-crossflow-filtration-process_3305.html
August 1, 2007
    In the chemical process industries (CPI), pressure is constantly on to improve filtration. The filtration step has to be performed quickly (time is money), efficiently (product loss is money lost), and effectively (energy costs for pumping and drying are soaring). As a result, vendors of filtration equipment — be it for dust removal from fluegas or product recovery from a gas or liquid...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Filtration-in-the-spotlight_3331.html
July 1, 2007
    Most columns shut down without fires. Yet most refineries and chemical plants at some time or another have experienced spontaneous or hot work ignitions in at least one column. When this occurs inside a column during or after shutdown, the results can be devastating and dangerous. This paper concentrates on the fires related to packing in columns.   Many refineries and chemical plants...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/absorption/Causes-and-Prevention-of-Packing-Fires_3124.html
July 1, 2007
Techno Bank Co., Ltd. (Tokyo, Japan; edlinks.che.com/6897-537) has developed a new supply, storage, and transport system for safely handling a high capacity of hydrogen in fuel-cell applications. The system — a cassette containing nano-sized powder of magnesium hydride (MgH₂) — is said to be safer than alternatives, such as insulated cylinders of liquid H₂ at 700 bar. Other methods being...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/adsorption/Putting-MgH2-in-your-fuel-tank_3288.html
July 1, 2007
What is billed as the world’s first plant to produce liquefied natural gas (LNG) from landfill gas is now being commissioned in Irvine, Calif., by Prometheus Energy Company (Seattle, Wash.; edlinks.che.com/6897-540). The first module is expected to reach its capacity of around 5,000 gal/d (about 750 scf/min of gas) by fall, says Dan Clarkson, vice-president. Other modules will be added later to use...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/adsorption/Landfill-yields-LNG-for-vehicle-fuel_3290.html
July 1, 2007
A dehydration process — which uses about half the energy required by thermal methods for drying brown coal or sludge — is being developed by the Central Research Institute of Electric Power Industry (Tokyo, Japan; edlinks.che.com/6897-532). The process uses liquefied dimethyl ether (DME) as the dehydrating agent, taking advantage of the ether’s properties: namely, DME has a low boiling...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/evaporation/Liquified-DME-cuts-energy-costs-for-dehydrating-solids_3283.html
June 1, 2007
Kobe Steel Ltd. (Kobelco; Tokyo; edlinks.che.com/6896-532) has developed a process to recover hydrogen from methane steam reformers with purity that is sufficiently high for use in fuel cells. The key to the process is a proprietary carbon-monoxide adsorbent for H₂ pressure-swing adsorption (PSA), which Kobelco developed jointly with Kansai Coke and Chemicals Co. (Amagasaki, Japan). In conventional PSA...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/adsorption/A-new-PSA-process-to-recover-high-purity-H2-from-steam-reformers_3264.html
May 1, 2007
A simpler and more-efficient way to obtain purified terephthalic acid (PTA) has been developed by GTC Technology (Houston, Tex.; edlinks.che.com/6895-537). In conventional PTA production, p-xylene is oxidized to crude terephthalic acid (CTA), then purified by hydrogenation in an aqueous solution. Hydrogenation converts the main impurity, 4-carboxybenzaldehyde (4-CBA), to p-toluic acid, which is more readily...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/crystalization/A-better-way-to-purify-terephthalic-acid_3255.html
May 1, 2007
    Pure water is an essential ingredient in the manufacture of a vast amount of products in the U.S. and, of course, throughout the world. In the industry for which I work, electricity generation, high-purity water is an absolute must for feeding high-pressure steam generators. But of course, steam generation is also important in the petroleum-refining and petrochemical industries...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Microfiltration-For-CPI-Wastewater_3147.html
May 1, 2007
In order to produce ethanol with nearly 100% purity from fermentation broth, conventional processes use a two-step distillation operation, which accounts for almost 55% of the total energy requirements. Therefore, improving the concentration step is a key to reducing the costs of making bioethanol. A promising step in this direction is a new gating membrane being developed by professor Shin-ichi Nakao at...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/The-cost-for-concentrating-ethanol-may-drop-thanks-to-a-membrane-that-acts-like-a-valve_3257.html
April 1, 2007
    The world's largest pharmaceutical conference and exhibition, Interphex, will be held at the Jacob Javits Convention Center in New York from April 24-26. Approximately 1,000 global companies that serve the pharmaceutical and biotechnical industries will showcase their latest lines of equipment, technologies and services in the areas of manufacturing, sourcing and services, information...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/filtration/Interphex-Show-Preview_3163.html
March 1, 2007
The rise of the salty water table in many areas of Australia is threatening a large area of agricultural land. In a two-year research, development and demonstration project, scientists have been looking for ways to solve the problem by producing fresh water as a valuable byproduct of salinity mitigation. The Renewable Energy Group of RMIT University's School of Aerospace, Mechanical and Manufacturing...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/evaporation/Recovering-salt-fresh-water-and-farmland-from-briny-land_3219.html
Pages: « Previous  3 4 5 6 7 8 9 10 11 [12] 13 14 Next »

Get more from Che.com
Get email updates in your inbox

 

Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 21,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors


Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now



We also offer the following subgroup for more targeted discussions:

Tools
Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
X
To access this area, please log in or create an account.
Username:
Password:
Forgot your password?
Request it now.
Processing...