Case Studies

 

A collection of case studies that highlights new products in action and how vendors help chemical manufacturing companies succeed.

Environmental Health & Safety

A methodical approach to construction and commissioning

A start-up is only as easy as the preceding steps: construction and commissioning, says Senior Editor Dirk Willard in his monthly column.

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Dissolved Air Flotation (DAF) Optimization Thumbnail

Dissolved Air Flotation (DAF) Optimization

In industrial processing plants, a DAF is often used to reduce loadings and clarify wastewater. Tiny air bubbles are released into the tank causing small particulates to float to the top where they are skimmed off. To remove larger suspended solids, coagulant is dosed into the feed water-this helps to speed up clumping and settling. Typically, chemical is dosed to the DAF based on flow rate, but dosing based on flow ignores one major factor-the solids concentration! This leads to under and overdosing which could waste chemicals, increase hauling costs, and result in fines. Overcome this challenge by monitoring solids concentration in real-time and adjusting chemical feed based on the needs of the system.

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Feeding, dispensing and dosing

Controlling Crystallization through Modeling

CFD modeling and particle population control are key to improving processes and product quality at the crystallizer, and further downstream.

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Fluid Handling

Case Study: Viega ProPress For Stainless Opens Doors To New Markets Thumbnail

Case Study: Viega ProPress For Stainless Opens Doors To New Markets

Royal Chemical needed to replace existing process piping for chemical transport. The trick: not to shut down operations during the replacement. Read how the contractor achieved project success.

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Succeed at system migration

Learn to avoid the common pitfalls that each migration option poses. Here are 10 basic migration techniques.

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Are you certain about uncertainties?

Dr. Gooddata, therefore, recommends that we largely abandon the term “bias.” Instead, we will use the terms “systematic error” and “systematic uncertainty.” Systematic error is the actual error that exists between a measurement and the true value with zero random errors. Systematic uncertainty is taken to mean the estimate of the systematic error’s limits that we could expect with some confidence.

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Heat Transfer

Separations in flux

Separation processes often account for more than 50 percent of a chemical company's operating costs. Read how membranes and other non-thermal technologies poised to win a wider role.

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Effect of noncondensable gases on flow boiling

The presence of noncondensable gases in boiling fluids is not uncommon and sometimes can benefit the performance of the process.

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Operations Management

Reviewing the use of fouling factors in heat exchanger design

HTRI plans to review and analyze specific exchanger services to develop design margins for use in sizing heat exchangers—rather than relying on fouling factors.

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Separations Technology

Bend Pressure Drop & Heat Transfer Performance

The presence of bends and properly predicting pressure drop through them can have a significant impact on accurately estimating the thermal and hydraulic performance of the overall unit.

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