Chlorine dioxide system Bellozon CDKc with integral pre-dilution station: the concentrated source chemicals can no longer be mixed. (Pictures: Prominent)
Inherently Safe Design

Inherently Safe Design: A Way Out for Engineers Squeezed by New Rules on Quantitative Analysis

The EU’s revised Machinery Directive 2006/42/EC specifies that machine controls should be designed to ensure that they do not present hazards. This requirement is not new — it also appeared in the previous (1998) version of the Directive — but what is new is how this safety is to be achieved. Engineers dealing with mechanical design and plant construction are now caught between two new safety standards, EN ISO 13849 and EN IEC 61508, both of which require quantitative risk analysis.

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Galleries

Modular vacuum conveyors are available in a wide range of designs and sizes. (Picture: Volkmann)
Pneumatic Conveying

How to Consider Lifetime Costs for Powder And Bulk Conveying

When considering a pneumatic conveying system, the simple purchase price is no longer the most important business criterion. Today, and especially in the chemical industry, the analysis of costs and benefits goes far deeper: More important than a supposedly low purchase price are total cost of ownership and overall equipment effectiveness — especially when dealing with the transfer of powders and bulk materials.

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The Maag Colorex color mixer will allow the operator to color natural or virgin resins directly out of the pulveriser or from a silo. (Maag Pump Systems)
Mixer

Maag Americas Announces New Colorex Color Mixer

Maag Americas adds the Colorex color mixer to its line of Ambient Pulverisers. The mixer is used to mix product in-line with a pulveriser to eliminate the typical cleanup time of a central mixer. It is designed for most polymers and for production rates up to 907 kg/h (2,000 lbs/hr).

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