HTF view from currently marketed, at 300 ℃ heat 10 childhood, some black soot wafting HTF in there, this is a typical problem formulation or base oil is also a problem; some heated at 300 ℃ 40 hours. Oil the bottom of a small amount of carbon particles settle down there; there's oil heating 60 hours, the oxidation interface is very clear; there is oil heating at 300 ℃ 100 hours, conducting oxide interface has shown black, oil There are a lot of bitumen-like precipitate; and heated at 300 ℃ 100 hours heat transfer oil pictures, the whole turned into black and reddish brown oil, heat transfer oil supplier, the oil also has a black precipitate carbon particles, glass dirty wall was dark; there after conducting oil heating in the lower container forming dark contaminants, Xinxiang heat oil, thermal oil and the formation of some dark contaminants at the top of the container. We tested the most well-known of domestic thermal oil, heated at 310 ℃, about 80-90 ℃ oxidation, after 720h, the oil was turned into tar-like black and become sticky, with a clear oxide interface. These oils have gone through the examination of relevant state departments. Why is this so? The most fundamental reason is: HTF formulation is not comprehensive enough, we can not fully meet China's specific national conditions. That requires the use of a closed system, and the user has to use the open system, it is a matter of respect. Recipe also stressed in sealed under nitrogen stable, heat oil producers, while in contact with the air of the open system - Determination of thermal oxidation stability only that 175 ℃ 72h can. To know the temperature of the high slot, although the general requirements below 70 ℃, but also a considerable proportion of the upper tank temperature above 100 ℃, and in a system, the high-temperature portion and the upper portion of the lower low temperature heat convection certain meeting, oil oxidation products at high temperatures is inevitable. Heat oil heat oil manufacturers _ _ Xinxiang Fengqiu County Taihang Chemical provided by Fengqiu County Taihang Chemical Co., Ltd. Fengqiu County Taihang Chemical Co., Ltd (www.hndaoreyou.com) strong, credible, in Xinxiang of fuel oil and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Fengqiu County Taihang Chemical Co., Ltd., and you hand in hand into the brilliant, for a better future!