This column is based on “Calcium Carbide Production from Limestone – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/calcium-carbide-production-cost. Calcium carbide is the most industrially relevant carbide because of its important role as the basis…
Uniflow cyclones can be effective solid-gas separation equipment when space is limited. Presented here are design and calculation methods for uniflow cyclones aimed at widening the industrial usefulness of these devices Cyclone separators are, in addition to fabric filters, electrostatic…
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…
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…
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…