Adipic acid (hexanedioic acid; Figure 1) is among the most important aliphatic dicarboxylic acids, with about 2.5 billion kg produced annually. It is isolated as odorless, colorless crystals with an acidic taste. Adipic acid undergoes the reactions of carboxylic acids,…
A first-of-its-kind pilot project in Abu Dhabi is integrating large-scale atmospheric water generation (AWG) with solar-thermal energy storage to enable carbon-free production of water. Led by partners AQUOVUM LLC (Dover, Del.; www.aqvglobal.com), Masdar Clean Energy (www.masdar.ae) and Khalifa University of…
DetaPipe (photo) is a new high-performance clad-metal pipe product designed for use in corrosive, high-temperature processing environments. DetaPipe is produced using a proprietary process that joins corrosion-resistant alloys, such as zirconium and titanium, to lower-cost, base metals, such as carbon…
A hydrometallurgical process for recovering vanadium from slag, a byproduct of steelmaking, has been significantly scaled up. Previously deployed at mini-pilot and bench scales, the process, developed by Neometals Ltd. (West Perth, Australia; www.neometals.com.au), has now been expanded by a…
Using a vast collection of experimental distillation-column data, sieve tray stability, and its influence on efficiency, are explored in terms of several physical and mechanical properties For trayed distillation columns, the concept of tray stability was introduced by the author…
This practical guide provides information on proven backwash-tuning techniques that will improve the reliability and robustness of sand filters in water treatment applications Water is a fundamental part of virtually all plants in the chemical process industries (CPI). Examples of…
The Water Environment Federation Technical Exhibition and Conference (Weftec; www.weftec.org) will be held October 18–20 at the McCormick Place Convention Center in Chicago, Ill. A selection of the products and services presented at the upcoming Weftec event are highlighted here.
ParallelPro (photo) is a leveling tool designed for chemical-vapor-deposition (CVD) processes, or any equipment requiring precise parallelism. Equipped with wireless communications and a field-serviceable battery pack, the ParallelPro measures offset distance, parallelism and temperature. Measurements are transmitted via Bluetooth to…
Branson MCX Series cleaners (photo) are ultrasonic systems purpose-built for cleaning plastics injection molds. They feature side-mounted, immersible transducers and powerful immersion heaters that can provide fast and efficient cleaning. Since most plastic injection molds are rectangular, with a lot…
Properly specifying process control valves for a plant project is critical to achieving efficient and effective processes. This one-page reference discusses key considerations for specifying control valves. Valve specification Process engineers should take the following aspects into consideration when specifying…