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Heat Transfer

October 2008: Letters, announcements, postscripts and corrections

Webinar: Heat Transfer Optimum Performance in Thermal Fluid Heating Systems: The importance of heat flux and film temperature Date: November 6, 2008 | Time: 11am EST In circulating thermal-fluid heating systems, the rate of heat transfer is typically controlled to…

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Facts at Your Fingertips: Heat Transfer System Design  

Pumps Centrifugal pumps with cast or forged steel casings are typically appropriate for systems with large flowrates Positive displacement pumps frequently can handle smaller flowrates of less than 100 gal/min Sealless pumps (canned motor or magnetic drive) avoid the installation…

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Chementator: Coal-to-Gasoline Process will Make U.S. Debut  

Consol Energy Inc. (Pittsburgh, Penn.; www.consolenergy.com), the nation’s largest producer of bituminous coal, and Synthesis Energy Systems Inc. (SES, Houston, Tex.; www.synthesisenergy.com) have formed a joint venture to build a coal-to-gasoline plant near Benwood, W.Va., close to Consol’s Shoemaker complex.…

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Chementator: F-T Jet Fuel  

Rentech, Inc. (Los Angeles, Calif.; www.rentechinc.com) has produced its first run of jet fuel from its Fischer-Tropsch (F-T) product demonstration unit (PDU) in Commerce City, Colo. The plant produces a synthesis gas of hydrogen and carbon monoxide by steam-reforming of…

Newsfront: Upping the Ante with Heat Transfer Fluids

In an economy with soaring raw material and rising heat-transfer-fluid prices, fluid manufacturers are getting more requests for high-performance products that will do the required job for a longer time period. As a result, fluid manufacturers are working to develop…

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Chementator: Add a second riser to boost propylene production from FCC residue  

Axens (Rueil-Malmaison, France; edlinks.chemengonline.com/7374-534) has commercialized its new Resid Fluid Catalytic Cracking (RFCC) PetroRiser technology for the production of high yields of propylene. This new resid-to-propylene technology is part of the FCC Alliance between Axens, The Shaw Group, Inc. (Baton…

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Facts at Your Fingertips: Humidity Control

Applications Dehumidification by cooling or dessication has a variety of applications, including: Preventing moisture regain. Nearly all materials have some affinity for moisture based on surface characteristics and the amount of surface exposed to humid air. Moisture regain occurs when…

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Chementator:  A dynamic way to reduce NOx emissions from FCCs  

A system for controlling oxides-of-nitrogen (NOx) emissions from catalyst regenerators in fluid catalytic crackers (FCCs) has cut NOx output to below 40 ppm (and as low as 25 ppm under certain conditions) in its first commercial installation, according to its…

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Chementator: Propylene or diesel fuel? Just change the controls  

Petroleum refiners can have the option to produce more diesel fuel or propylene from their fluid catalytic crackers, depending on the demand, through a new process offered by Shell Global Solutions (edlinks.chemengonline.com/7373-541). The process enables a typical FCC (processing a…

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Chementator: These Heat Exchangers Feature Tantalum as an Alternative to Graphite    

Carbone Lorraine (CL; Paris, France; edlinks.chemengonline.com/7372-538) is launching a new welded-plate heat exchanger, dubbed Heatex, which features plates made of tantalum CL-Clad. The patented CL-Clad technology involves the brazing of steel onto "reactive" metals, such as tantalum, titanium and zirconium,…