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Processing & Handling

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Rotary Valves Can Prevent Stem Seal Woes

Consider the potential for stem seal leakage when selecting a valve Experienced process control engineers follow familiar, time-tested steps when presented with a new system to design and specify. Selecting a control valve for a process always requires the same…

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Facts At Your Fingertips: Industrial Electrolysis

Industrial electrolysis involves passing a direct electric current through an electrolyte to elicit a range of chemical reactions. Electrolyzers are key pieces of technology for producing many important industrial chemicals. This one-page reference reviews the basic general operation of an…

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Facts At Your Fingertips: Efficiency in Electric Induction Motors

The purchase price of an electric motor is generally thought to end up as a small fraction (2–3%) of the motor’s total lifetime cost, with the majority of costs resulting from the electricity used by the motor. This makes motor…

A Primer on LPG Storage Systems

Any loss of containment for liquefied petroleum gas (LPG) can have potentially catastrophic results. This article details various LPG storage configurations with special focus on the design of mounded-bullet systems Liquefied petroleum gas (LPG) is a mixture of propane and…

Bookshelf September 2024: Recently published books for the CPI

The following titles are recently published books that may be relevant for professionals in the chemical process industries (CPI):    Fundamentals and Practice in Statistical Thermodynamics. By Jianzhong Wu and John Prausnitz. Wiley and Sons Publishing, 2024, 768 pages, $149.95. Rare…

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Pilot plant produces climate-friendly cement clinker

Concrete production is responsible for 6–9% of global anthropogenic CO2 emissions. “The largest contribution to that comes from the production of cement, a precursor product,” says Peter Stemmermann from the Institute for Technical Chemistry (ITC) at the Karlsruhe Institute of…

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Cyanobacteria mineralize CO2 into biogenic construction materials

Researchers from the Fraunhofer Institute for Ceramic Technologies and Systems (IKTS; www.ikts.fraunhofer.de) and the Fraunhofer Institute for Electron Beam and Plasma Technology (FEP; both Dresden, Germany; www.fep.fraunhofer.de) are introducing an eco-friendly, biologically induced method of producing biogenic construction materials as…

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Chementator Briefs

Tanning Agent Södra Skogsägarna (Södra; Växjö, Sweden; www.sodra.com) is investing in a production line at Värö that will create a tanning agent from tree bark. This new tannin can be used to process leather in a more environmentally friendly way,…

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Versatile production of biopolymers in new semi-crystalline format

Bio-based polymers, such as polyhydroxyalkanoate (PHA), are seeing increasing application as a more sustainable alternative to fossil-based materials. A new, flexible production platform developed by CJ Biomaterials, Inc. (Woburn, Mass.; www.cjbiomaterials.com) is now enabling the production of PHA in both…

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A proof-of-concept “BionicHydrogenBattery”

At a press conference during Achema 2024, Festo SE & Co. KG (Esslingen, Germany; www.festo.com) presented the BionicHydrogenBattery — a new concept for the simple storage and safe transportation of hydrogen. Currently, H2 can only be stored and transported safely…