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…
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…
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…
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…
This column is based on “Calcium Carbonate Production from Limestone: Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/calcium-carbonate-production-cost. Calcium carbonate (CaCO3) is a mineral that occurs naturally in chalks, limestones and marbles. Its largest use…
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…
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…
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…
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…
This column is based on “Styrene-Butadiene Rubber Production: Cost Analysis,” a report published by Intratec Solutions that can be found at: www.intratec.us/analysis/styrene-butadiene-rubber-production-cost. Styrene-butadiene rubber (SBR) is an elastomer that was originally developed prior to World War II as a replacement…