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Displaying 301 - 320 of 1643 stories.
October 1, 2011
Last month, at a dinner at the Hyatt Hotel in Philadelphia, Pa., the SCI America International Group (Philadelphia, Pa.; www.soci.org), presented its Perkin Medal to Dr. Rodney H. Banks, a research fellow at Nalco (Naperville, Ill.; www.nalco.com). As Stephanie Burns, honorary president of SCI explains, “This award recognizes his fundamental contributions to new sensor technologies that have led to...
http://www.chemengonline.com/extras/pdf/Perkin-Award-reflects-ChE-trend_8507.html
October 1, 2011
One of the key components in the operational success of chemical process industries (CPI) facilities is the transfer pump. These pumps must handle a wide variety of materials under a broad range of operating conditions. These diverse operational conditions may include harsh and corrosive environments as well as the following: • Changes in ambient temperatures and other weather conditions, such as...
http://www.chemengonline.com/extras/pdf/Making-Pump-Maintenance-Mandatory_8535.html
October 1, 2011
To confidently design, operate and troubleshoot solids-handling processes, engineers need to characterize powder flow in ways that relate to in-plant behavior. Universal powder testers provide the multi-faceted characterization that is necessary to reliably predict operational performance. This article examines the data that such instruments generate, and discusses their practical application. While many...
http://www.chemengonline.com/extras/pdf/Characterizing-Powder-Flow_8540.html
October 1, 2011
Equilibrium stage simulations are the nearly universal process design tool for mass transfer columns that contact vapor and liquid in countercurrent flow. Whether the service is absorption, stripping, distillation, fractionation, quench or evaporation, equilibrium stage models make mass and heat balances easy. They quickly estimate stream conditions and physical properties. They are easily altered, so a...
http://www.chemengonline.com/extras/pdf/Determining-Packing-Height-With-Accuracy_8550.html
October 1, 2011
Plant Watch Ineos Technologies licenses its technology for a PP plant in China September 1, 2011 — Ineos Technologies (www.ineos.com) has licensed its Innovene PP (polypropylene) Process for the manufacture of homopolymers, random copolymers and impact copolymers to the Shaanxi Yanchang Petroleum Yanan Energy and Chemical Co. in Shaanxi, China. The 300,000-ton/yr Innovene PP plant will produce a wide...
http://www.chemengonline.com/extras/pdf/BASF-to-invest-in-a-world-scale-acrylic-acid-complex-in-Brazil-and-more-business-news_8566.html
September 1, 2011
Phosgenation scaleup At the end of July, Bayer MaterialScience AG (BMS; Leverkusen, Germany; www.bayerbms.com) successfully tested its new gas-phase phosgenation technology at a new plant being commissioned for making toluene diisocyanate (TDI) — a raw material for making polyurethane — at its integrated production site at Caojing in Shanghai, China. The TDI facility is expected to come...
http://www.chemengonline.com/extras/pdf/September-Chementator-Briefs_8404.html
September 1, 2011
I was having a “wallflower moment” after Ms. Ruth Sands’ excellent troubleshooting presentation at the March AIChE meeting. That presentation was well summarized by Editor in Chief, Rebekkah Marshall in the April issue of CE (p. 5). I wanted to tell Ms. Sands, and the other meeting attendees, about my solvents column troubleshoot. Here’s the story: On this particular troubleshoot...
http://www.chemengonline.com/extras/pdf/Believe-your-instruments-unless-_8410.html
September 1, 2011
Dilute-phase conveying systems generally use centrifugal fans and positive displacement blowers for supplying conveying air to the conveying system. However, for some conveying systems, compressed air from a central compressor station is also used. The two important criteria required for pneumatic conveying are air flow and air delivery pressure. Different air movers have different characteristics in the...
http://www.chemengonline.com/extras/pdf/Moving-Air-In-Pneumatic-Conveying-Systems_8421.html
September 1, 2011
Condensate pots are commonly used on the condensing sides of some reboilers, such as those that are heated by steam or refrigerant vapor. These pots provide a liquid seal that prevents uncondensed vapor from blowing out of the reboiler into the condensate system. A break in this seal can result in heat transfer losses. With steam reboilers, blowing vapor into the condensate header may also lead to...
http://www.chemengonline.com/extras/pdf/Reboiler-Condensate-Drums-Silencing-Hydraulic-Hammer_8438.html
September 1, 2011
Steam-assisted, gravity-drainage (SAGD) operations employ large tanks that vent flammable and sometimes toxic gases. Safety and environmental concerns often require engineers to design vapor-recovery units (VRUs) to collect these gases and redirect them to a useful location — frequently for use as a fuel gas in a steam-generation system. When choosing a VRU setup for an SAGD facility, the two most...
http://www.chemengonline.com/extras/pdf/Tank-Vapors-Optimize-Ejector-Sizing-for-Better-Control_8440.html
September 1, 2011
Plant Watch Solvay to form JV with Sadara to build H2O2 plant in Saudi Arabia July 28, 2011 — Solvay S.A. (Brussels, Belgium; www.solvay.com) intends to create a 50:50 joint venture (JV) with Sadara Chemical Co. (itself a planned JV of Saudi Arabian Oil Co. and The Dow Chemical Co. — see below) for the construction and operation of a hydrogen peroxide plant in Jubail Industrial City. Scheduled...
http://www.chemengonline.com/extras/pdf/Solvay-to-form-JV-with-Sadara-to-build-hydrogen-peroxide-plant-in-Saudi-Arabia-and-more-business-news_8453.html
September 1, 2011
This article presents equations that allow the user to calculate liquid volume as a function of liquid depth, in both vertically and horizontally oriented tanks with dished heads. The equations accommodate all tank heads that can be described by two radii of curvature (torispherical heads). Examples include: ASME flanged & dished (F&D) heads, ASME 80/10 F&D heads, ASME 80/6 F&D heads...
http://www.chemengonline.com/extras/pdf/Calculate-Liquid-Volumes-in-Tanks-with-Dished-Heads_8471.html
August 1, 2011
Last year, the U.S. Environmental Protection Agency (EPA;Washington, D.C.; www.epa.gov) proposed new emissions standards for hazardous air pollutants (HAP) emitted by industrial boilers and solid-waste incinerators (CISWI) based on the performance of the maximum achievable control technology (MACT). The so-called “boiler MACT” final rules were signed by the EPA Administrator on February 21...
http://www.chemengonline.com/extras/pdf/Boiling-uncertainty_8284.html
August 1, 2011
Plant Watch Outotec to deliver the world’s largest iron-ore pelletizing plant in Brazil June 30, 2011— Outotec Oyj (Espoo, Finland; www.outotec.com) has agreed to deliver an iron-ore pelletizing plant to Samarco Mineração S.A. The new plant will be installed at Samarco’s iron ore port in Ponta de Ubú, EspÌrito Santo, Brazil. Once operational at the end of 2013...
http://www.chemengonline.com/extras/pdf/Outotec-to-deliver-worlds-largest-iron-ore-pelletizing-plant-in-Brazil_8299.html
August 1, 2011
Modern industrial-automation systems rely entirely on digital technology, that is, computers. And as is typical of digital products, suppliers love to add features — data collection, alarm management, and so on — that are very useful for process operations but are not process control in the purest sense. This is continuing, the result being that process control systems are evolving to...
http://www.chemengonline.com/extras/pdf/Todays-Process-Automation-Worlds_8302.html
August 1, 2011
The realization that our natural resources are not endless, and that we need to focus on sustainability is driving technology and its supporting funds toward new choices. In the chemical process industries (CPI), engineers are looking for alternatives to the traditional fossil-fuel-based chemistries, and are developing innovative bio-based routes to meet our needs. There is much evidence of this shift to a...
http://www.chemengonline.com/extras/pdf/The-Bio-Based-Economy_8343.html
July 1, 2011
For a little over two decades now, China’s rise in the chemical process industries (CPI) has often appeared to outsiders like a runaway reaction. Low wages, a very low-valued currency and certain government policies have provided the perfect migration spot for jobs, contracts and intellectual property that had previously been sheltered in developed nations. According to analysts, however...
http://www.chemengonline.com/extras/pdf/Chinas-playing-field-levels_8155.html
July 1, 2011
I have an ongoing dispute with a longtime colleague, Bob Miller. I said he ruined my new safety boots. He said he didn’t. Bob was a young, fearless distillation engineer at a time when our extraction engineer refused to take a trip to Japan to inspect new trays going into an old extractor. I called Bob into my office and asked him to take the trip, even with zero extraction experience. Bob accepted...
http://www.chemengonline.com/extras/pdf/When-troubleshooting-the-extractor_8158.html
July 1, 2011
To make the modern materials we use every day, such as plastics, metals, electronics, pharmaceuticals, fuels and so on, strong acids are used to convert the earth’s raw materials into modern materials. In fact, so many tons of acid are used (200 million metric tones of sulfuric acid annually worldwide) that the gross domestic product (GDP) of most industrial nations are directly correlated to...
http://www.chemengonline.com/extras/pdf/Heat-Exchangers-for-Hot-Acids-Material-Selection_8160.html
July 1, 2011
Grace Davison (Columbia, Md.; www.grace.com) has commercialized a set of catalysts and additives for fluid catalytic cracking (FCC) that contain either zero or low rare-earth metal content. The new product family, known as Replacer, includes new catalysts for processing both hydrotreated and residual-fuel-oil (resid) feed, as well as environmental additives for sulfur treatment. The product family employs...
http://www.chemengonline.com/extras/pdf/A-catalyst-line-with-low-or-zero-rare-earth-metals_8162.html
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