Knowing the options in fluid-circulation designs helps in the selection process Over the past few decades, hundreds of seal geometries and a fair number of seal categories have evolved. Recently, the distinction between single- and dual-mechanical seals has been brought…
Less "Balling" of Dry Powder with This Mixer Outfitted with three independent agitators, the Triple Action Disperser promises a low energy and fast method for mixing high-quality dry powders into liquid dispersions. Its design allows for a controllable vortex and…
Metallic nanoparticles are usually produced by wet chemical methods, often using toxic and flammable substances, or by physical methods such as evaporation and laser ablation. A group from the Laboratory for Sustainable Technology, School of Chemical and Biomolecular Engineering, at…
Seals are assemblies of elements that prevent the passage of a solid, liquid, gas or vapor from one system to another. When a seal allows leakage of material, failure has occurred. This guide provides an overview of common seal types…
Demanding application requirements coupled with improved downstream control devices and enhanced instrument diagnostics have led to major changes in process-valve monitoring and control. Factors driving these changes in the chemical process industries (CPI) include the need for lower plant operating…
A pressure-swing-adsorption (PSA) system for hydrogen purification that operates at "tens of cycles per minute," versus one cycle every 4 – 10 min for conventional PSA, will have its first commercial-scale demonstration at an ExxonMobil refinery in France. Developed by…
The standard temperature range for waste-rubber pyrolysis has been reported as 480 – 1,740ºF. Within 480 – 750ºF, shredded tire scrap decomposes into increasing amounts of gases and oil; and above 750ºF, oil and solid char yields can decrease relative…
The blood-cholesterol-lowering effects of beta-glucan — the soluble oat fiber — is well known, but up to now it has been difficult to obtain beta-glucan-rich fractions that are feasible for food applications, according to VTT Technical Research Center (Espoo, Finland,…
This week, Plast-O-Matic Valves, Inc. (Chem Show, New York; Booth 1018) debuts an all-thermoplastic, air-operated pinch valve with a newly designed sleeve element. With an open tubular-sleeve element to control flow, the Series HSA pinch valves provide an open flow…
The technology — now being demonstrated at the company’s booth with its lab-scale version (LabRAM) — generates acoustic waves via the resonant vibration of a simple, mechanically driven agitator. At an 11:00 a.m. press conference today, Resodyn Acoustic Mixers Inc.…