Ice pigging

Ice pigging

Mathematical Modeling of CIP in Food Processing

Published in Mohammed M. Farid, Mathematical Modeling of Food Processing, 2010

Product purging techniques are sometimes in place such as pigging, ice pigging [44] air purging [45] that aim to recover product before CIP starts. This can save time and materials. However, it cannot be applicable to all products and equipment. Solid pigs could cope with straight lines but not with vessels. Air recovery can be a rather expensive investment for a food factory. Thus, better understanding of existing CIP methods can already offer great advantages.

Phase Transformation and the Heat and Mass Transfer in the Ice, Water and Brine System

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Journal Information

Published in Heat Transfer Engineering, 2020

Xiao Yun, Sam Brooks, Giuseppe L. Quarini

Except energy storage, ice slurries can also be used to shear off dirt and biofilms in pipelines. This method is named ice pigging [1, 8–12]. The technology is widely used in the water industry. In comparison with the conventional foam and solid pig, the ice pig can travel through complex topologies over a long distance because of the lubrication effect of the liquid phase and the elevation of its freezing point as some of the ice crystals melt [10, 13, 14]. Even if the pig gets stuck, one can simply wait for the ice slurries to melt and resume the cleaning process later. This method of pipe cleaning is cheap and easy to use due to the vast volume reduction of the waste material in comparison with water flushing.

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Mathematical Modeling of CIP in Food Processing

Phase Transformation and the Heat and Mass Transfer in the Ice, Water and Brine System