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

Displaying 241 - 260 of 288 stories.
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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/evaporation/Recovering-salt-fresh-water-and-farmland-from-briny-land_3219.html
March 1, 2007
For developing a new technology that traps carbon dioxide and other pollutants so they can be removed, researchers from the University of Bath's Dept. of Chemical Engineering (edlinks.che.com/6893-551) have received the...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Trapping-CO2_3226.html
February 1, 2007
Toyo Engineering Corp. (Tokyo, Japan; edlinks.che.com/6892-539) and BASF AG (Ludwigshafen, Germany; edlinks.che.com/6892-540) are...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Gas-purification_3205.html
February 1, 2007
Winemaking still involves traditional batchwise processing steps, such as batch fining with bentonite clay to prevent heat instability in protein haze formation. This is typically done by adding “rule-of-thumb” amounts of clay, allowing it to settle and decanting the wine. Now, researchers from the Deparment of Chemical Engineering, Adelaide...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/adsorption/A-new-processing-strategy-for-the-wine-industry_3199.html
February 1, 2007
    The equilibrium phase distribution ratio (K value) is necessary for designing and assessing the performance of distillation columns. This paper proposes a simplified approach to calculate the K value that is suitable for preliminary design work and for checking the performance of existing columns. The article also explains the first principles for calculation of K values from the fugacity of...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/distillation/Estimating-Equilibrium-Phase-Distribution-Ratios_3129.html
January 1, 2007
A process that can enrich highly contaminated natural gas has been developed at Eindhoven University of Technology (Netherlands; edlinks.che.com/6891-531), with support from the Royal Shell/Dutch Group. The device shows promise as a way to utilize the large quantities of natural gas that is currently unusable because of high concentrations of carbon dioxide and hydrogen sulfide. Existing technology, such...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/Clean-dirty-gas-with-this-centrifugal-gas-separator_3183.html
January 1, 2007
    Improvements in cartridge dirt-holding capacity has led to new designs, as well as to new equations for filter selection and specification, which are linked to dramatic improvements in the time between turnarounds and filter changeout. Cartridge filtration serves the process industries in a host of applications. Ironically, however, filtration principles are not taught adequately in many...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/filtration/Cartridge-Filtration-Principles-For-the-CPI_3140.html
January 1, 2007
Last month, after just two years, Maaike Kroon completed her Ph.D. from the Technical University of Delft (Netherlands; edlinks.che.com/6891-544) for developing a sustainable and inexpensive production process that enables reaction and separation operations to be performed in the same vessel. The process takes advantage of the unique properties of ionic liquids (ILs) and supercritical carbon dioxide by...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/liquid_liquid_extraction/Green-chemistry_3195.html
December 1, 2006
    New crystallization-system designs rely on previous successful installations and rules for scaling-up systems to adapt to slightly different conditions. However, guidelines or rules of thumb have underlying assumptions that might have been ignored when scaling-up a system during the design phase. This practice often leads to difficulties in practical application. This point will be clearly...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/crystalization/Crystallizers-And-Agitators_2826.html
December 1, 2006
The mountains of used tires piling up around the world may be a source of a new filtration media that promises to be a cheaper and more efficient alternative to sand or anthracite, which are commonly used for filtering wastewater. The patented technology, developed by Yuefeng Xie, associate professor of environmental engineering at Penn State Harrisburg (Pa.; edlinks.che.com/6519-555), uses crumb rubber...
http://www.chemengonline.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/filtration/Tires-filter-wastewater_3064.html
Pages: « Previous  4 5 6 7 8 9 10 11 12 [13] 14 15 Next »

Get more from ChemEngOnline.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 28,000 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...
Live chat by BoldChat