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Toward the Production of Safer Chemicals

A new protocol for safer chemical design is helping to overcome gaps in ‘traditional’ toxicology and improve upon federal regulations for endocrine-disrupting chemicals Research over the past two decades shows clearly that some chemicals manufactured for product functionality can have…

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Polymer-based Piping Systems: Meeting the Challenges of the CPI

Due to favorable properties, such as light weight and corrosion resistance, plastic-piping systems are suitable for a growing number of applications Over the past few decades, plastic-piping systems have been adopted in many different sectors of the chemical process industries…

Facts At Your Fingertips: Crossflow Membrane Filtration Module Types

In crossflow membrane filtration (CMF), feed flow is parallel to the filtration surface (rather than perpendicular to it, as in conventional filtration). During a given pass, a portion of the feed permeates the membrane, while a larger portion is retained…

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Managing Fouling in Heat Exchangers

Fouling of heat exchanger surfaces reduces thermal efficiency. An improved understanding of fouling and the design factors that affect it can help ensure that heat exchange occurs during normal operating conditions Using tubular heat exchangers is an efficient and reliable…

Critical Flanges: Advanced Washers Eliminate Galling and Hot Work

During vessel breakout activities, plants should pay close attention to the design of the washers used on bolted flanges. A simple change in this area can help to reduce downtime and improve safety Bolted flanges on vessels, and their associated…

Valves: Essential Workhorses

Concise tips on selecting the right valve A typical chemical plant contains miles of piping and hundreds, if not thousands, of industrial valves (Figure 1) that are essential for the plant to operate efficiently and safely. Unlike the simple consumer…

Dynamic digital valve tool introduced at Valve World

A highlight of this company at Valve World 2022 (November 29–December 1; Düsseldorf, Germany) is the new Digital Valve Kit (DVK), which provides plant operators with remote access and remote control of their valves, as well as indicating the current…

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Sputtering process enables production of large, iridium-lean MEAs

Polymer electrolyte membrane (PEM) electrolysis uses a membrane-electrode assembly (MEA) that integrates the electrolyte membrane and electrode (diagram). Large-scale hydrogen conversion of electricity requires a large number of MEAs, which is a drawback for scaleup, because the MEA relies on…

Reducing the Noise from Control Valves

Attenuation for high-noise control valves need not be difficult or expensive The world does not lack for noise. It pummels us from all sides, emanating from traffic, political commercials, and your annoying neighbor’s backyard party. Industrial plants have their share…

New Delta Hybrid series

The Delta Hybrid series (photo) offers an innovative solution for the pneumatic conveying of sensitive, powdery and granular media. The rotary lobe compressors or screw blowers can offer maximum energy efficiency, minimum lifecycle costs, 100% pure and reliable process air…