Ongoing advances in both adsorbent materials and system engineering allow today’s pressure swing adsorption (PSA) systems to produce nitrogen of varying purities and volumes at relatively low cost compared to cryogenic air separation Nitrogen production that is carried out using…
Vacuum is a very widely used utility in the process industries – from pharmaceutical and chemical to food and biotechnology. While some applications require fairly deep vacuum – so-called “fine” vacuum – many other operations rely on vacuum in the…
For many people, one of the most important features to consider when sourcing a vacuum pump is the ability of that pump to hold up over the long term. Pumps are exposed to a wide range of operating conditions that…
In light of the operational concerns reviewed in Part 1, this chemical recycling firm decided to evaluate different pump technologies. Fortunately, recent advances in vacuum pump technology make dry-running pumps a viable option for many of those currently using liquid…
Summary: A number of common industrial processes require vacuum, such as distillation or drying operations. The necessary vacuum has historically been supplied using a variety of technologies that have high operating costs in terms of both consumables (e.g., oil, water)…
VACUUBRAND has specialized in vacuum pumps, gauges, and controllers for process, industrial, research, and OEM applications for over 50 years. We have earned a loyal, global following for our dry, chemical-resistant pumps, long service intervals, and advanced controls. Our oil-…
A handful of compounds derived from natural gas and crude petroleum are converted into a vast array of industrial petrochemicals. Starting materials for most petrochemical intermediates include synthesis gas, ethylene, propylene, butadiene and BTX (benzene, toluene, xylenes). This one-page reference…
A direct copolymerization of carbon dioxide and diols has been achieved by Keiichi Tomishige and Masazumi Tamura at Tohoku University (Sendai; www.che.tohoku.ac.jp) and Hiroshi Sugimoto at Tokyo University of Science (both Japan; www.sut.ac.jp). The synthesis takes place with a metal-oxide…
Conversion of carbon dioxide into useful carbon sources, such as carbon monoxide, formic acid and formaldehyde, is attracting considerable interest as a way to recycle and utilize CO2. A step in this direction is the direct photocatalytic reduction of CO2…
Mechanical seals, as required by most vessel agitators, are systems sufficiently complex to warrant a good understanding by engineers and appropriate training for operators To ensure safe and reliable agitator operation, the sealing of the rotating shaft is of fundamental…