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http://dx.doi.org/10.12925/jkocs.2018.35.4.985

Study on the Lubricity Characteristics of Bio-heavy Oil for Power Generation by Various feedstocks  

Kim, Jae-Kon (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority)
Jang, Eun-Jung (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority)
Jeon, Cheol-Hwan (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority)
Hwang, In-Ha (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority)
Na, Byung-Ki (Department of Chemical Engineering, Chungbuk National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.35, no.4, 2018 , pp. 985-994 More about this Journal
Abstract
Bio-heavy oil for power generation is a product made by mixing animal fat, vegetable oil and fatty acid methyl ester or its residues and is being used as steam heavy fuel(B-C) for power generation in Korea. However, if the fuel supply system of the fuel pump, the flow pump, the injector, etc., which is transferred to the boiler of the generator due to the composition of the raw material of the bio-heavy oi, causes abrasive wear, it can cause serious damage. Therefore, this study evaluates the fuel characteristics and lubricity properties of various raw materials of bio-heavy oil for power generation, and suggests fuel composition of biofuel for power generation to reduce frictional wear of generator. The average value of lubricity (HFRR abrasion) for bio-heavy oil feedstocks for power generation is $137{\mu}m$, and it varies from $60{\mu}m$ to $214{\mu}m$ depending on the raw materials. The order of lubricity is Oleo pitch> BD pitch> CNSL> Animal fat> RBDPO> PAO> Dark oil> Food waste oil. The average lubricity for the five bio-heavy oil samples is $151{\mu}m$ and the distribution is $101{\mu}m$ to $185{\mu}m$. The order of lubricity is Fuel 1> Fuel 3> Fuel 4> Fuel 2> Fuel 5. Bio-heavy oil samples (average $151{\mu}m$) show lower lubricity than heavy oil C ($128{\mu}m$). It is believed that bio-heavy oil for power generation is composed of fatty acid material, which is lower in paraffin and aromatics content than heavy oil(B-C) and has a low viscosity and high acid value, resulting in inhibition of the formation of lubricating film by acidic component. Therefore, in order to reduce friction and abrasion, it is expected to increase the lubrication of fuel when it contains more than 60% Oleo pitch and BD pitch as raw materials of bio-heavy oil for power generation.
Keywords
Bio-heavy oil for power generation; Lubricity; biofuels;
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