Protecting process systems from overpressurization is vital throughout the chemical process industries (CPI). Both safety relief valves and rupture disks are commonly used for this purpose. Sometimes the combination of a relief valve with a rupture disk can add service…
Rupture disc devices provide overpressure protection for a variety of storage and process vessels and equipment. The objective of the rupture disc is to maintain a leak-tight seal and be a passive bystander until called upon to relieve excess pressure.…
Technical and specialty gases find use in many synthesis processes and a number of unit operations, in analysis and in plant maintenance. This article outlines applications for gases in fine and specialty chemistry, ranging from synthesis processes and inerting to…
The patented design of this unit improves grinder efficiency The Annihilator (photo) is a twin-shaft, solids-reduction unit designed for a variety of industrial and municipal installations, including sewage lift stations, head works and sludge processing systems. The unit’s counter-rotating, hexagonal-shaft…
Plant Watch Dow to close LDPE plant in Freeport, Texas February 12, 2009 — Driven by current economic conditions and overcapacity for low-density polyethylene (LDPE) in the North American marketplace, The Dow Chemical Co. (Midland, Mich.) has announced the shutdown…
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This unit offers measurements for low flows in the milliliter range The SLQ-HC60 (photo) fills a gap in the existing range of products for precise measurement in the low flowrate range, below 100 mL/min. This water-resistant meter operates without moving…
Eye injuries of all types occur at a rate of more than 2,000 per day in the U.S., and half of those occur in the workplace. In 2006, the U.S. Bureau of Labor Statistics (BLS) reported over 52,000 workplace injuries…
There is increasing pressure on industry to reduce both energy usage and the associated CO2 emissions. An important and profitable action that industry can take is to recover more process energy and thus improve the efficient use of that energy.…
The use of gasketed plate-and-frame heat exchangers has gained tremendous acceptance in the chemical process industries (CPI) over the past 20 years due to their high heat-transfer coefficients, compactness and low cost. However, it is important for the engineer who…