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Displaying 261 - 280 of 1612 stories.
November 1, 2011
Effective level measurement helps ensure smooth, continuous processes by maintaining material inventory at economic quantities, and maximizes plant output by preventing spillage, system clogging and process upsets. In chemical process industries (CPI) applications, level measurement of liquids, powders and slurries are often complicated by the presence of steam, dust, foam, turbulence, caking or...
http://www.che.com/extras/pdf/Level-Measurement-Devices_8605.html
November 1, 2011
Significant demand persists within the chemical process industries (CPI) for those with engineering backgrounds and technical skills. Companies across many CPI sectors are finding it difficult to find enough individuals with chemical and engineering skills and expertise to staff their operations. But despite strong demand for technical skills, recruitment of chemical engineers is somewhat constrained by a...
http://www.che.com/extras/pdf/Engineer-Demand-strong-but-Economy-Constrains-Hiring_8606.html
November 1, 2011
Water and steam are vital components of virtually all plants in the chemical process industries (CPI). And, a very important operation is the treatment of makeup water to produce the purity required for certain applications, most notably for use in heat exchangers and steam turbines. An important consideration in water treatment is that many industrial facilities are, or will soon be, dealing with...
http://www.che.com/extras/pdf/Modern-Concepts-in-Makeup-Water-Treatment_8607.html
November 1, 2011
Aaron Potter becomes engineering manager for Innovative Processing Solutions (Aurora, Ind.), an affiliate of Stedman Machine Co. Codexis, Inc. (Redwood City, Calif.) appoints Achilles Antonio Clement to head Codexis do Brasil Participacoes Ltda., the company's newly formed operations in Brazil. Pascal Villemagne becomes vice president, commercial, for Carbogen Amcis...
http://www.che.com/extras/pdf/Codexis-appoints-Achilles-Clement-to-head-Brazil-operations-_8608.html
November 1, 2011
For decades, plant-wide oil-mist systems have been used to lubricate rolling-element bearings in high-speed applications throughout the petrochemicals, textiles, pharmaceuticals, mining and other chemical process industries (CPI). Applications range from small motors to large rotating cylinders and a variety of fluid movers. Plant-wide oil-mist systems provide a centralized way to supply lubricating oil to...
http://www.che.com/extras/pdf/Selecting-Oil-Mist-Systems_8615.html
November 1, 2011
To stay on budget, major capital projects often call for aggressive schedules. Engineering, procurement and construction (EPC) contractors often end up using work processes that are not part of an established or standard work procedure. This is especially true when it comes to acquiring materials to support the schedule, particularly for critical paths related to the piping design, supply, fabricate and...
http://www.che.com/extras/pdf/Piping-Minimizing-the-Risk-of-Pre-buys_8617.html
November 1, 2011
  Plant Watch ColBiocel selects Chemtex technology for ethanol production in Colombia September 26, 2011 — Chemtex (Wilmington, N.C.; www.chemtex.com)  has entered into a term sheet agreement with Colombiana de Biocombustibles Celulósicos (ColBiocel) for the supply of a license and associated engineering and technical services for an 85,000 metric ton per year (m.t./yr) cellulosic...
http://www.che.com/extras/pdf/PPG-to-increase-global-production-capacity-for-precipitated-silica-and-other-business-news_8619.html
November 1, 2011
The benefits of field-device diagnostics are often acclaimed in qualitative terms, but on a much lower frequency in quantitative ones. Yet, an attractive cost-benefit analysis is necessary for almost any initiative to make it off the drawing board and into a plant. Even more rare are economic figures that come directly from the process plant engineers (as opposed to a vendor with vested interest in selling...
http://www.che.com/extras/pdf/Control-Valve-Diagnostics_8620.html
October 1, 2011
Thermosiphon reboilers are the new standard in petroleum refineries and chemical plants. Nevertheless, approximately 50% of the world’s reboilers are kettles. In the realm of heat transfer, kettle reboilers have not been understood well. Last month, at ChemInnovations, however, Pete Parker, FRI’s president and my supervisor, cracked the knowledge barrier with insight from nothing other than...
http://www.che.com/extras/pdf/A-window-into-kettle-reboiler-secrets_8501.html
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.che.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.che.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.che.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.che.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.che.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.che.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.che.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.che.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.che.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.che.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.che.com/extras/pdf/Solvay-to-form-JV-with-Sadara-to-build-hydrogen-peroxide-plant-in-Saudi-Arabia-and-more-business-news_8453.html
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