There are several methods of regeneration of used transformer oil. One of these is dehydration by zeolite, purification in a filter press, purification and dehydration in a centrifuge (purification, clarification and vacuum drying), there are also processes based on adsorption.<\/p>\n
Adsorption is the most efficient and the least complicated method of complete purification and regeneration of transformer oil. The process involves passing the oil through a layer of sorbent, which captures moisture and contaminating particles in just one processing cycle. Sorbents used for this purpose should have excellent filtration qualities and be capable to capture the molecules of the various contaminants. One of the advantages of Fuller\u2019s earth is that it can be reactivated multiple times, making this sorbent very efficient and cost-effective.<\/p>\n
Fuller\u2019s earth is a clay with the ability to capture contaminants from mineral or vegetable oils and fats. Fuller\u2019s earth has become the quality standard in oil regeneration and purification processes.<\/p>\n
Fuller\u2019s earth is widely used in the petrochemical industry worldwide. And although it is quite successfully used in the construction and pharmaceutical industries, due to the specific properties of its main use in modern<\/p>\n
In the past, the purpose of Fuller’s earth was very different from the modern times. Initially, itt was used for extraction of oil and other fat from wool fabrics in the process of finishing, which gave it its name. It is also considered one of the clays that can absorb harmful particles, serve as an antiseptic or bleach fabric.<\/p>\n
According to a 1913 document, Fuller\u2019s earth was used for the first time in the United States for purification of vegetable oils, in 1878-1880.<\/p>\n
Now, this substance is often used to purify new transformer oil before use, removing contaminants, or to restore used transformer oil to its initial performance quality.<\/p>\n
Transformer oil accumulates many contaminants during use, apart from moisture and gases. Some of the contaminants dissolved in the oil are the products of the oil\u2019s use. Solid particles, which originate from the solid insulation of the transformer, turn into sediment. The microscopic particles, which promote oxidation of oil, are also hazardous for the transformer\u2019s cellulose insulation, and can pass through various filters. The use of adsorbents, such as Fuller\u2019s earth, allows to capture these contaminants and completely purity and restore the oil. Due to large pores, Fuller\u2019s earth can capture sulfonates, tar and asphaltenes with high molecular mass.<\/p>\n
The process of oil regeneration involves pumping the oil directly from the transformer into a regeneration unit, where the oil is filtered and clarified, passing through Fuller\u2019s earth.<\/p>\n
Color alone is not necessarily an indication of the oil\u2019s condition, however, it can indicate undesired processes in the oil. For instance, if the oil\u2019s color changes from yellow to orange or red, this means that internals of the transformer may have suffered damage.<\/p>\n
Contaminants formed in the process of using the oil influence the color. When the contaminants are dissolved in the oil, the color of the oil gradually changes to red. The contaminants continue to oxidize, damaging the transformer in the long run.<\/p>\n
Therefore, while the color is not the one essential indication of oil quality, clarification of the oil by Fuller\u2019s earth indicates the removal of the harmful substances from the oil and restoration of the oil\u2019s performance quality. Also, practical use of the product has demonstrated its viability and efficiency. The benefits of using Fuller\u2019s earth as a sorbent for oil reclamation <\/a>are quite obvious.<\/p>\n","protected":false},"excerpt":{"rendered":" There are several methods of regeneration of used transformer oil. One of these is dehydration by zeolite, purification in a filter press, purification and dehydration in a centrifuge (purification, clarification and vacuum drying), there are also processes based on adsorption. Adsorption is the most efficient and the least complicated method of complete purification and regenerationRead More <\/a><\/p>\n","protected":false},"author":7,"featured_media":3926,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case_studies"],"acf":[],"language":"en","_links":{"self":[{"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/posts\/3925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/comments?post=3925"}],"version-history":[{"count":0,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/posts\/3925\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/media\/3926"}],"wp:attachment":[{"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/media?parent=3925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/categories?post=3925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oilregeneration.globecore.com\/en\/wp-json\/wp\/v2\/tags?post=3925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}