Oil degradation products such as oxidation and varnish are known to cause problems in many industries but especially within power generation. The results are often costly turbine trip-outs, revenue losses and even penalties for not producing electricity or steam. Varnish-related issues seem to have escalated in the last few years, and many have found that the so-called dissolved soft contaminants are a major part of the problem. This article will describe the creation of soft contaminants, their consequences and how to detect them, as well as a new and improved method of removing them utilizing cooling and cellulose depth filter media.
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