Professor Kazuaki Ishigreo and colleagues at Nagoya University (Nagoya, Japan; http://en.nagoya-u.ac.jp) have shown that a chiral, supramolecular, U-shaped, boron Lewis acid catalyst (diagram) promotes the unprecedented multi-selective Diels–Alder reaction of propargyl aldehyde with cyclic dienes. The Diels–Alder reaction, which is…
A solid grasp of pump sizing allows engineers to make effective economic and practical decisions about process pumps. This one-page reference provides information about two key parameters and other considerations for pump sizing. Pump sizing steps Sizing a pump requires…
This column is based on “Oxygen Production – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/oxygen-production-cost. Oxygen is a nonmetallic element and one of the most abundant elements on Earth’s surface. Under standard pressure and…
Pressurized condensate-return systems and flash-steam vent condensers offer opportunities for fuel cost savings in a plant’s steam system. Here’s how to take advantage Pressurized steam-condensate systems can provide plants with a minimum of between 15 and 35% savings in fuel…
Today, olefins are mainly made either by naphtha cracking or by the catalytic conversion of dimethyl ether (DME), which is in-situ made from synthesis-gas- (syngas) derived methanol (methanol-to-olefin processes). Both naphtha cracking and syngas production (from steam-methane reforming; SMR) require…
The following is a list of recently published books of relevance for chemical process industries (CPI) professionals Picturing Science and Engineering: A guide to making scientific photographs for presentations, journal submissions and covers. By Felice C. Frankel, MIT Press,…
The ideal gas law ( PV = nRT), relating molar volume of a gas to pressure and temperature, is predicated on two assumptions: 1) that the volume occupied by the gas molecules is negligible compared to the volume of the…
This column is based on “HDPE Production via Slurry Loop Process – Cost Analysis,” published by Intratec. The report can be found at the following URL: www.intratec.us/analysis/hdpe-production-cost. High-density polyethylene (HDPE) is one of the three main types of polyethylene, and…
New technologies can provide competitive advantages compared to established processes, but significant effort is required to transition a promising concept into a commercial reality Many students study chemical engineering with the aspiration of someday inventing an innovative process that could…
This column is based on the report “Polychloroprene Production – Cost Analysis,” published by Intratec. It can be found at the following URL: www.intratec.us/analysis/polychloroprene-production-cost. The need to find a substitute for natural rubber during World War II boosted the development…