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Displaying 141 - 160 of 1630 stories.
February 1, 2013
At Chemical Engineering magazine, we focus the bulk of our coverage on the unit operations and equipment that tie the various segments of the chemical process industries (CPI) together. Regardless of industry sector, plant engineers perform chemical, mechanical and thermal transformations of raw materials, including petroleum, minerals, air and others, into products, using a host of common processes. But...
http://www.chemengonline.com/extras/pdf/A-partnership-for-process-understanding_10160.html
February 1, 2013
Pressure-relief valves are widely and effectively used in situations where the pressure in a process vessel rises to above the vessel’s design-pressure rating. Proper relief-valve sizing is critical to plant and process safety to permit fluids sufficient flow area to exit the vessel. Sizing relief valves requires several equations for different flows (liquid flow, vapor flow and two-phase flow), as...
http://www.chemengonline.com/extras/pdf/Sizing-Calculations-for-Pressure-Relief-Valves_10173.html
February 1, 2013
There was genuine excitement at the November 14 and 15 ChemInnovations event held in New Orleans. This was especially true at the Plant Managers Roundtable that was moderated by Rebekkah Marshall. On stage with Rebekkah were Jim Armstrong of Rhodia, Inc., Paresh Bhakta of Celanese Ltd. and Jim Hull of Georgia Gulf Chemicals and Vinyls, LLC. All three gentlemen are very experienced plant managers, all with...
http://www.chemengonline.com/extras/pdf/Opportunities-for-Recent-Grads_10174.html
February 1, 2013
Because natural gas supplies are significantly increasing due to the rising exploitation of shale gas, mainly in the U.S., propane prices are decreasing. Coupled with low propane prices, ethylene producers are shifting to lighter feedstocks (more ethane, less naphtha), which is decreasing yields of propylene in cracking operations. The increasing demand for propylene and the availability of low-cost...
http://www.chemengonline.com/extras/pdf/Technology-Profile-Propylene-Production-via-Propane-Dehydrogenation_10175.html
February 1, 2013
Supplying steam that meets process needs while protecting steam-system components, such as boilers and steam turbines (Figure 1), against scale, fouling and corrosion, requires purified feedwater (condensate plus makeup water). Depending on the steam pressure required, the specific approach of the water treatment may be shifted to account for a variety of issues. For example, caustic corrosion and...
http://www.chemengonline.com/extras/pdf/Steam-System-Water-Preparation_10176.html
February 1, 2013
Research and development (R&D) projects usually require significant time, effort and manpower to become successful. Despite the significant resources spent on R&D projects, only 5–10% of the projects are statistically believed to be successfully commercialized, in terms of both timing and technological advances. Many projects fail because they cannot achieve the desired results on timing of...
http://www.chemengonline.com/extras/pdf/Accelerating-Process-and-Product-Development_10177.html
February 1, 2013
Plant Watch Lonza to expand ADC manufacturing capacity January 8,2013 —Lonza (Basel, Switzerland; www.lonza.com) plans to invest 14 million Swiss francs (CHF; about $15 million) to expand antibody drug conjugate (ADC) manufacturing capacity in Visp, Switzerland. Oncology therapeutics including ADCs represent one of the fastest growing segments of the pharma and biotech industry. The expansion of the...
http://www.chemengonline.com/extras/pdf/Lonza-to-Expand-ADC-Manufacturing-Capacity-and-More-Business-News_10178.html
February 1, 2013
Determining the proper preliminary size for centrifugal pumps during the initial stages of any pump-specification exercise requires numerous calculations and assumptions. This article reviews the steps needed to size centrifugal pumps during the early stages of a project, to support initial cost-estimation efforts. Such early pump-sizing efforts are important steps toward final pump selection and detailed...
http://www.chemengonline.com/extras/pdf/Sizing-Specifying-and-Selecting-Centrifugal-Pumps_10179.html
February 1, 2013
Williamson Raza Lumbard Amsbaugh Juhasz Bruno Morel becomes CEO, and Frédéric Raynal becomes chief technology officer and vice president of engineering, at Alchimer SA (Massy, France), a provider of nanometric deposition technologies for advanced 3D packaging. Philip Tilston becomes chief financial officer of Wall Colmonoy Ltd. (Madison Heights, Mich.), a maker of...
http://www.chemengonline.com/extras/pdf/Steven-Winchester-becomes-CEO-of-MaxWest-Environmental-Systems-_10181.html
January 1, 2013
Non-chemical water treatment methods generally utilize electricity to prevent scale formation, mitigate corrosion and control microbial growth. When properly applied, non-chemical water-treatment technologies help plants reduce chemical consumption, minimize waste and possibly save water and energy. The following descriptions outline several types of non-chemical water-treatment methods. Magnetic fields...
http://www.chemengonline.com/extras/pdf/Non-chemical-Water-Treatment_10055.html
January 1, 2013
Farewell to CE readers Last month, after almost 12 years with Chemical Engineering, I resigned as this magazine’s Editor in Chief. I have been given an opportunity to work in my husband’s architectural design business, and the benefit of spending more time with my young children is simply too good to pass up. For almost six years, I have had the honor of serving as this magazine’s Editor...
http://www.chemengonline.com/extras/pdf/January-2013-Letters_10059.html
January 1, 2013
Sustainable Energy Management. By Mirjana Golusin, Stevan Popov and Sinasa Dodic. Elsevier Inc., 225 Wyman Street, Waltham, MA. 02451. Web: elsevier.com. 2013. 436 pages. $79.95. Chemical Process Equipment: Selection and Design, 3rd ed. By James Couper, W. Roy Penney and James Fair. Elsevier Inc., 225 Wyman Street, Waltham, MA. 02451. Web: elsevier.com. 2012. 864 pages. $150.00   Gas and Oil...
http://www.chemengonline.com/extras/pdf/Recently-published-books-January-2013_10065.html
January 1, 2013
Omega Engineering A compact pressure transmitter for easy reading Rangeable industrial pressure transmitters in the PX5100 Series (photo) are compact and feature a backlit display for easy reading that rotates for its location. Wetted parts are made of stainless steel, and the device features a program lock function, as well as rapid ranging with internal push-buttons, and thin-film sensor technology. The...
http://www.chemengonline.com/extras/pdf/Focus-on-Pressure-Measurement-and-Control_10072.html
January 1, 2013
Waste heat recovery (WHR) is essential for increasing energy efficiency in the chemical process industries (CPI). Presently, there are many WHR methods and technologies at various stages of implementation in petroleum refineries, petrochemical, chemical and other industry sectors. Increasing energy costs and environmental concerns provide strong motivation for implementing more and newer methods and...
http://www.chemengonline.com/extras/pdf/Waste-Heat-Recovery-Methods-And-Technologies_10084.html
January 1, 2013
The ASME Boiler and Pressure Vessel Code (ASME BPVC), which is administered by ASME (New York, N.Y.; www.asme.org; founded as the American Society of Mechanical Engineers), is a well-established standard for the design and fabrication of boilers and pressure vessels. ASME code-symbol stamps show compliance with the requirements of the standard, but code stamping of steam systems in ethylene and other large...
http://www.chemengonline.com/extras/pdf/Applying-ASME-Boiler-Code-to-Steam-Generation-Systems_10086.html
January 1, 2013
Virtually every process-plant manager pursues the commendable goals of safely extending equipment life and maximizing both the availability and reliability of plant assets. Achieving these objectives usually requires upfront effort and money — both of which can be scarce resources. But even the realistic manager who knows that reliability comes at an ufront price may not want to authorize these...
http://www.chemengonline.com/extras/pdf/Use-Simplified-Lifecycle-Cost-Computations-to-Justify-Upgrades_10087.html
January 1, 2013
Plant Watch Stamicarbon wins contract for urea plant in China December 6, 2012 — Stamicarbon B.V. (Sittard, the Netherlands; www.stamicarbon.com), the Licensing and IP Center of Maire Tecnimont S.p.A. (Milan, Italy; www.mairetecnimont.it), has been awarded a contract for a new urea plant with Inner Mongolia Erdos Chemical Industry Group Co. in China. The plant will have a capacity of 2,860 metric...
http://www.chemengonline.com/extras/pdf/Toyo-wins-worlds-largest-single-train-urea-plant-in-Nigeria-and-more-business-news_10088.html
December 1, 2012
NORTH AMERICA 21st Winter Fluorine Conference. American Chemistry Soc., Div. of Fluorine Chemistry (ACS; Washington, D.C.). Phone: 614-447-3776; Web: fluorine.sites.acs.org/21stwfc.htm St. Pete Beach, Fla. January 13–18, 2013   NACE Nuclear Power Plant Coatings Symposium 2013. National Assn. of Corrosion Engineers (NACE; Houston). Phone: 281-228-6200; Web: events.nace.org/events Orlando, Fla...
http://www.chemengonline.com/extras/pdf/Calendar-January-June-2013_9969.html
December 1, 2012
Many readers of this magazine are familiar with the impact of a hurricane — both professionally and personally. Plants along the U.S. Gulf and the southern Atlantic Coasts, for instance, live with a high probability that one of these storms cross their paths, and therefore are generally prepared for such storms. Last month, however, the force of a hurricane hit a most unlikely place, the Northeast...
http://www.chemengonline.com/extras/pdf/Superstorms-impact-on-CE_9977.html
December 1, 2012
Wet fluegas desulfurization (FGD), also known as wet-scrubbing, is a popular pollution-abatement technique for removing acid gases, such as SO2 and HCl from fluegas produced during coal-fired power generation and industrial combustion processes. Wet scrubbing is used in association with power generation, thermal oxidizers, kilns, incinerators, boilers, foundries and other combustion units. Also...
http://www.chemengonline.com/extras/pdf/Wet-Scrubbers_9984.html
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