Providers on the topic

Alfa Laval is unveiling two new hygienic valves, the Alfa Laval Unique Mixproof CIP and Unique Mixproof Process, extending its hygienic double-seat valve range to meet market demands.  (Source: Alfa Laval)
Valves

Introducing Two New Mixproof Valves

Alfa Laval has launched two new mixproof valves – the Alfa Laval Unique Mixproof CIP and Unique Mixproof Process. The Unique Mixproof CIP is a double-seat valve that safely and efficiently manages the flow of cleaning media during cleaning-in-place while the Unique Mixproof Process, a compact version of proven Alfa Laval double-seat valves, is configurable and available in various sizes to meet the manufacturers’ requirements.

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Galleries

The Scopeblue resins of Lanxess’ proven Lewatit brand consist of more than 90 % renewable raw materials. In accordance with the mass balance approach, they are chemically identical to conventional products and are produced in the same plants using the same processes.  (Source: Lanxess)
Resins

Sustainable Water Treatment

Lanxess has introduced three new weak acid cation (WAC) resins along with two weak base anion exchange resins in its Lewatit product portfolio. The new WAC resins consist of renewable raw materials.

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Figure 2: Geometry of the vessel and impeller system (Source: Syngenta)
Mixing Technology

Naked-eye Visualization of Unyielded Zones for a Close-Clearance Impeller Agitating Viscoplastic Fluids

The mixing of a viscoplastic fluid with an anchor impeller is studied visually. Three different types of experiments, documented through videos and still images, demonstrate the existence of an unyielded region, rotating like a rigid body. These results are in good agreement with previous workers’ numerical predictions, and dramatically show the influence of yield stress on mixing effectiveness, even with a well-designed agitation system. The unyielded region is the equivalent, for a close-clearance impeller, of the stagnant region outside the well-known ‘cavern’ forming around a small-diameter impeller. Furthermore, for such systems the presence of motion is not by itself a criterion by which quality of mixing can be assessed.

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