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Processing & Handling

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Piping for Process Plants, Part 4: Codes and Fabrication

Click here for full pdf version of this article - includes all graphs, charts, tables, and author information   This fourth in a series of articles* on piping for process plants examines two topics that may, at first, seem to…

Increase Productivity Through Better Gas-Liquid Mixing  

    Mixing is one of the oldest unit operations in the chemical process industries (CPI) and can also be one of the most demanding. The complex challenges presented by the wide variety of mixing tasks and scaleup needs encountered…

Focus on Compressors, Fans & Blowers

    Move lots of potentially corrosive gas with this blower   Rotron CP regenerative blowers (photo) offer extremely high resistance to corrosion and chemicals encountered in chemical processing applications, such as vent-header offgassing, spot source, biogas or landfill gas,…

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Ceramic ferrules

Blasch Precision Ceramics (Albany, N.Y.; edlinks.chemengonline.com/6899-548) has commercialized one-piece hex-head ferrules made of 99.6% alumina for applications in steam-methane reformers. The high-purity alumina is becoming popular as an alternative to high-grade metal alloys because it is virtually immune to chemical…

‘Nanowire’ membranes for use in harsh environments

Technology for producing nanowires from titanium dioxide, and for fabricating the wires into free-standing membranes and other shapes, is being offered for sale by Intellectual Property Partners LLC (IP2; Atlanta, Ga.; edlinks.chemengonline.com/6899-540). The membranes are chemically inert and thermally stable…

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Bending polymers imitate the beauty of nature

Researchers from the Hebrew University of Jerusalem’s Racah Institute of Physics (Israel; edlinks.chemengonline.com/6899-539) have succeeded in programming polymer sheets to bend and wrinkle by themselves into prescribed structures, such as domes, saddles and sombrero shapes (photo). Their work, described in…

Outlets for glycerin

    Glycerin has over 1,500 known end uses, including applications in cosmetics, pharmaceuticals and food products, with the U.S. market alone demanding around 600-million lb/yr. But over the next two years, biodiesel plants are expected to produce an additional…

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Selecting a Positive Displacement Pump

The need to reduce production costs and optimize energy consumption makes proper pump selection more important than ever. Understanding basic pumping principles and the fluid characteristics for a given application is the starting point for selection  It has been said…

Focus on Valves

    This ball valve provides a high flow   Introduced last year, the 7G Series (photo) is a three-piece, 316-stainless-steel ball valve offered in two- and three-way configurations. The valve operates at pressures up to 3,000 psi, has a…

A vapor-phase glycerin-to-PG process slated for its commercial debut

Davy Process Technology Ltd. (DPT; London; edlinks.chemengonline.com/6898-531), a Johnson Matthey company, has received the first license of its new glycerin-to-propylene glycol (GTPG) process. The first project, planned for the Ashland/Cargill joint venture (CE, June, p. 10), will produce more than…