Dr. Jörg Kempf ♥ Process Worldwide

Dr. Jörg Kempf

Chefredakteur PROCESS
Vogel Communications Group GmbH & Co. KG

11/1989 - 12/1997 Chemiestudium (Dipl.-Chem.) und Promotion (Dr. rer. nat.) an der Technischen Universität München – Schwerpunkt Technische Chemie; seit 01/2000 Redakteur PROCESS; seit 01/2006 stellv. Chefredakteur PROCESS; seit 01/2019 Chefredakteur PROCESS – Schwerpunkte: MSR-Technik/Prozessautomatisierung, Pumpen/Kompressoren

Articles of the author

On the radar: Each peak of the ‘echo curve’ corresponds to a reflection of the signal: The ‘Reference’ pulse is caused by the transition between transmitter head and probe. A further peak is caused by a reflection on the product surface.
Guided Wave Radar

Level Measurement: How to Make the Best of GWR

Guided Wave Radar (GWR) technology has transformed the way process companies measure level in challenging applications: Providing accurate and reliable results, GWR modules have no moving parts, reducing maintenance to a minimum. Critical for a GWR application is, nevertheless, the correct installation.

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The specific range of functions that a digital twin offers depends heavily on the intended purpose. In the process industry this can be very diverse. In-depth process knowledge and comprehensive know-how create the prerequisites for model-based plant operation.

Process Modeling and Digital Twin: Significant Benefits — a Whole Life Long

The digital twin of a plant is a virtual image, which not only allows internal process states to be displayed transparently, but also allows process optimizations to be worked out. Take the example of steam crackers — the king’s class of process plants — and learn how models, simulations and digital twins can be used to generate benefits over the entire life cycle of plants.

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Proper process monitoring in reverse osmosis processes prevents scaling, fouling and oxidation, yet requires minimal operator intervention. (Pictures: Bürkert Fluid Control Systems)
Keeping RO at Peak Performance

Proper Monitoring Increases Reverse Osmosis Efficiency and Membrane Life

Scaling, fouling and oxidation are the natural enemies of reverse osmosis (RO) systems in water treatment—especially in the food and pharmaceutical industries. Proper process monitoring and control of critical parameters such as pH, ORP, conductivity, flow, temperature and differential pressure can provide advanced warning and protection of scaling, fouling or chemical attacked. If early warnings are ignored, the membrane may become irreparably damaged.

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According to Dr. Ralf Sick-Sonntag, as a general rule, debottlenecking is unlikely to be very beneficial when the plant is well run, and the opposite is also the case.

Debottlenecking: Exploiting Opportunities to Boost Performance

The goal of debottlenecking is to increase production capacity at an existing plant by making modifications to the equipment configuration or workflow. This is accomplished by eliminating bottlenecks that limit throughput. It can be an extremely profitable exercise for users, because in most cases debottlenecking adds extra capacity at a fraction of the cost of new build or expansion. PROCESS has put together some practical examples.

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Water hammer can be puzzling, disruptive, and damaging for any operator.
Water Hammer

Who’s Knocking? The Dangers of Water Hammer

Evaluating (and minimizing) water hammer in a liquid sampling system — A common yet often unidentified problem poses a significant threat to any liquid sampling system. It is called water hammer, and it may be lurking in a system, ready to wreak havoc on fluid system components. How to mitigate water hammer?

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Fig. 1: Pusher Centrifuge (Pictures: KMPT)

Filtration Equipment Selection Criteria

Filtration centrifuges provide a good method for mechanically separating suspended solids from liquids. Separation in a centrifugal field generated by equipment rotating at high speed has a number of advantages compared to simple vacuum and pressure based techniques.

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