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Technical & Practical

Key Reactions for the Petrochemical Industry

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…

Field Troubleshooting 101 and How to Get the Job Done

A major part of field work lies in troubleshooting problems: finding out why a system is not operating the way it is intended. This article provides guidelines for effective troubleshooting and contains many practical examples of their successful use Effective…

Vortex Breakers in Practice

When vortex formation limits outflow from a tank, consider a disc-type vortex breaker Chemical engineers have long said that, while it is easy to get liquid into a tank, it can be difficult to get liquid out. Large line sizes…

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Rapid Prediction of Prandtl Number of Compressed Air

Two methods are presented and compared for quickly calculating this important, yet neglected parameter Over the last few decades, a considerable effort has been directed to toward the evaluation of thermophysical and transport properties of air for a wide range…

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An Up-Close Look at Electropositive Filtration

Electropositive filters take advantage of surface-charge effects to filter nanometer-sized particles. Provided here is an overview of how they work and where they can be used Electropositive filters take advantage of surface-charge effects to filter nanometer-sized particles. Provided here is…

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Insulating Heat-Transfer-Fluid Piping

Heat-transfer-fluid (HTF) system piping is insulated to reduce heat loss and prevent worker contact with hot surfaces. Insulated piping minimizes the effects of changes in ambient temperature to help ensure precise control of process temperature. Proper design of the HTF…

NFPA 652: Standardizing Combustible Dust Standards

The latest NFPA standard applies to many industry sectors, and aims to address the fragmented nature of the industry-specific standards currently in place On September 7, 2015, the National Fire Protection Association (NFPA; Quincy, Mass.; www.nfpa.org) issued NFPA 652 (Standard…

Monitoring Flame Hazards In Chemical Plants

The numerous flame sources in CPI facilities necessitate the installation of advanced flame-detection technologies Fire is a primary and very real threat to people, equipment and facilities in the chemical process industries (CPI), especially in the refining and storage of…

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Integrated Risk-Management Matrices

An overview of the tools available to reliability professionals for making their organization the best-in-class Since the 1960s, process facility operators have made concerted efforts to improve the overall reliability and availability of their plants. From reliability theory to practical…

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Reliability and Maintenance: Performance Trends of Top Performers in the CPI

Focusing on a ‘reliability culture,’ mechanical availability and optimum costs leads to top performance Three factors drive manufacturing performance in the chemical process industries (CPI). These factors establish an operational culture that creates maximum availability of assets (mechanical availability) at…