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Engineering Practice

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Chemical Process Plants: Plan for Revamps

Follow this guidance to make the most of engineering upgrades that are designed to improve plant operations or boost throughput capacity The chemical process industries (CPI) are functioning in an era of globalization, and between the prevailing economic conditions and…

Large-Scale Fermentation Systems: Hygienic Design Principles

Fermentation has always been an important part of human history. Human beings are known to have made fermented foods since Neolithic times. With the discovery of microorganisms in the 19th century, fermentation became a viable route to produce synthetic chemicals…

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Pipe Insulation: Finding the Optimal Thickness

Avoid tedious numerical calculation by using this quick, shortcut method Insulated pipes are important in many applications in the chemical process industries (CPI). When it comes to the insulation itself, the two main questions are: which material should be used;…

Using Laser Diffraction to Characterize Heterogeneous Catalysts

The capabilities of laser diffraction systems go beyond particle-size analysis to also predict a catalyst’s propensity to experience attrition Heterogeneous catalysts, where the catalyst is in solid form, enhance many of the gas- and liquid-phase reactions that underpin common operations…

Optimizing Flare Operation Through Proper Design

Flare problems are often caused by the seal systems that are designed to control air ingress. Follow these troubleshooting guidelines to improve design and ensure safe, reliable flare operation Flares are used to dispose of unwanted hydrocarbon gases. One common…

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A Universal Equation for Designing Pipelines

The pipe-flow equation presented here can be used to properly and easily size pipelines for liquid, vapor and two-phase flow. Example calculations are also shown Sizing pipelines is a fundamental task for design engineers, who typically use several equations to…

Improving the Operability of Process Plants

Turndown and rangeability have a big impact on the flexibility and efficiency of chemical process operations  During the design of a chemical process plant, the main focus is on which process units or unit operations must be integrated to convert…

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Improving mass-transfer-limited reactions

The step-by-step procedure described here can help operators to optimize reactor operation and output Engineers throughout the chemical process industries (CPI) commonly encounter situations where different materials have to be contacted inside a reactor to drive the chemical transformations needed…

Gas Turbines: Design and Operating Considerations

Gas turbines are widely used throughout the chemical process industries (CPI) because they allow for high power output and high overall efficiency at relatively reasonable costs. In recent years, a variety of factors and ongoing technology advances have contributed to…

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Filtration and Separation: Avoid Common Errors

The seven commonly made mistakes discussed here often lead to poor filtration and separation performance and many associated problems For almost any chemical process industries (CPI) plant, contamination is a reality that can cause numerous associated — and often chronic…