• Title/Summary/Keyword: Waste lubrication oil

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An Experimental Study on the Dewatering from the Waste Lubrication Oil by Vacuum Evaporation (진공 증발에 의한 폐윤활유 속의 수분 제거에 관한 실험적 연구)

  • 정상현;박성제;홍원석;김용진;구경회
    • Journal of Energy Engineering
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    • v.12 no.3
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    • pp.216-222
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    • 2003
  • An experimental study on the characteristics of a dewatering due to vacuum evaporation in the waste lubrication oil were performed using a lab scale system. Evaporation characteristics were investigated for various performance factors. Results of evaporation characteristics as a function of vacuum pressure, oil temperature, initial water concentration, and nozzle type were obtained. Increasing the oil temperature and altering the nozzle type were found to increase the evaporation rate without increasing vacuum pressure requirement. The best performance is achieved for the nozzle which made porous material.

Preparation and Characterization of TiO$_2$ Ultrafiltration Membranes for Reclamation of Waste Lubrication Oil (폐윤활유 재생용 TiO$_2$ 한외여과막의 제조 및 특성평가)

  • 김계태;현상훈
    • Journal of the Korean Ceramic Society
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    • v.36 no.3
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    • pp.244-254
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    • 1999
  • 폐윤활유 재생용 TiO2 한외여과막은 정밀영과용 지르코니아 복합막(즉, 복층담채) 및 알루미나 단층 담체(기공크기 0.1$mu extrm{m}$)상에 졸-겔 코팅법에 의하여 TiO2 분리막 층을 코팅하여 제조 하였다. TiO2 졸의 특성 분석을 통하여 봉입침지(sealed dip-coating) 및 가압 코팅(pressurized coating)법으로 결함이 없는 TiO2 복합막을 제조할 수 있는 코팅조건을 최적화 하였다. 합성 TiO2 한외여과막의 분리막층 두께는 1$\mu\textrm{m}$이하의 범위에서 조절되었으며,기공값을 보여주었으며 75$0^{\circ}C$까지 열처리하여도 80%정도의 용질배제율(기공크기 22.5nm)을 유지하는 점으로 봐서 고온 공정을 요하는 폐윤활유 재생막으로서 충분한 열적 안정성을 갖고 있었다.

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A Study on the Grinding Characteristics according to Oil Mist Supply Method (오일 미스트 분사 방법에 따른 연삭특성)

  • 허남환;이석우;최헌종
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.254-257
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    • 2002
  • As the large Coolant amount used of a machine holds mass serious trouble recently, an environment pollution is increased, and a machine is conquering large specific gravity in an empty cost plane. It is the stage that must reexamine the parts washing that processing is later with this current way or a problem of a liquid waste treatment back. The environmental problems by using coolant demanded the new cooling methods. As one of them, the studies on the grinding with compressed cold air and oil mist have been done. The cooling method using compressed cold air was effective through going down the temperature of compressed air supplied below -$25^{\circ}C$ and increasing the amount of compressed cold air, but had not enough cooling effect due to the low performance of lubrication. Therefore, the cooling methods using oil mist newly were suggested. This method can satisfy both cooling effect and lubrication with only small amount of coolant, also have the benefit in the point of decreasing the environmental pollution. This paper focused on analyzing the grinding characteristics of the cooling method using oil mist. The grinding test according to compressed cold air and oil mist supply direction were done.

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Study of Lubrication and Oxidation Stability as Mixture Ratio of FAMEs in Lubricating Base Oil (윤활기유 내 지방산메틸에스테르 혼합비율에 따른 윤활특성 및 산화안정성 연구)

  • Kim, Shin;Yim, Eui-Soon;Jung, Choong-Sub;Na, Byung-Ki
    • Journal of the Korean Applied Science and Technology
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    • v.30 no.4
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    • pp.715-725
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    • 2013
  • FAMEs produced from vegetable oil via transesterification reaction were known as alternative fuels. Lubrication and Wear properties of FAMEs were investigated to confirm the alternative possibility as lubricating base oil. In this study, lubrication properties and physical characteristics of mixture oils were examined using blended FAMEs(soybean, palm, waste oils) in two kinds of lubricating base oils. The oxidation stability of mixed samples were analyzed using ASTM D 2272 method and investigated for oxidation states of mixture oils after the shell four ball test. The results showed that the increase of FAMEs contents improved lubrication due to the intrinsic characteristics, however, increased the contents of oxidation which deteriorate the lubrication, and we found optimum mixture ratio as results of each base biodiesel (FAME).

Design of a Scroll Expander for Waste Heat Recovery from Engine Coolant (엔진 냉각수 폐열 회수용 스크롤 팽창기 설계)

  • Yu, Je-Seung;Kim, Hyun-Jae;Kim, Hyun-Jin
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.23 no.12
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    • pp.815-820
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    • 2011
  • A scroll expander was designed for an energy converter from waste heat of IC engine coolant to useful shaft work. The scroll expander is to run in a Rankine cycle which receives heat energy transferred from engine coolant circulation cycle. The working fluid was Ethanol. For axial compliance, a back pressure chamber was provided on the rear side of the orbiting scroll. Lubrication oil was delivered by a positive displacement type oil pump driven by the shaft rotation. Performance analysis on the scroll expander showed that the expander efficiency was 63.4%. It extracts shaft power of 0.6 kW out of engine coolant waste heat of 17.5 kW, resulting in the Rankine cycle efficiency of 3.43%.

Study on vehicle application of biodegradable hydraulic oils from the point of tribological evaluation technology (Tribology 관점에서 생분해성 유압작동유 실적용 평가에 관한 연구)

  • Na ByungChul;Kim JinYong;Seo JoonHo
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 2004.11a
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    • pp.367-371
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    • 2004
  • Bio-degradable hydraulic oil using polyolester base oil is formulated for the applications of heavy duty hydraulic machineries. It has proved quality and market price competitiveness by assessment of reliability test in vehicle manufacturer and specific vehicle related institute. Contribution of bio-degradable oil keep the working environment clean and increase export competitiveness in European market. Leakage or waste of mineral types of hydraulic oils in heavy duty machineries causes pollution of river, ocean, underground water. Drinkable-water pollution is serious problem in Europe. In some European countries, using bio-degradable hydraulic oils become an obligation in heavy duty machineries. New product of bio-degradable oils satisfy the European regulations(OECD 302B) and shows excellent performance in compare with European products.

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The Principle and Application of Bioremediation (생물학적 복구법(Bioremediation)의 원리와 응용)

  • 정재춘;박창희;이성택
    • Journal of Korea Soil Environment Society
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    • v.1 no.2
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    • pp.3-13
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    • 1996
  • The efficiency of bioremedation can be measured by the enumeration of microorganism, respiration rate and decomposition rate. The side-effect can be measured by using Daphnia, oyster larvae and rainbow trout. Oxygen transfer could be a problem in the on-site treatment. For these, hydrogen peroxide can be used for solvents such as benzenes. Oleophilic nitrogen and phosphorus can be added for the treatment of oil pollution. Mixed microbial population or pure culture can be used for the inoculum. The pure culture used is Pseudomonas and Phanerochate. Sometimes enzymes are added and Photodegadation is coupled to increase the efficiency. For the treatment of oil pollution residue on soil such as waste lubrication oil and machine oil sludges, top soil of 15cm∼20cm depth is plowed and oil residue with approximately 5% concentration is applied. The optimum pH range is 7∼8, the ratio of phosphorus to hydrocarbon is 1:800. Appropriate drainage is necessary. For the treatment of marine oil pollution residue, addition of oleophilic fertilizer is effective. Air pollutiant such as oder can be treated by bioremediation. In this case, biofilters or biosrubbers are used for the reactor.

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Study on the Lubricity Characteristics of Bio-heavy Oil for Power Generation by Various feedstocks (다양한 원료에 따른 발전용 바이오중유의 윤활 특성 연구)

  • Kim, Jae-Kon;Jang, Eun-Jung;Jeon, Cheol-Hwan;Hwang, In-Ha;Na, Byung-Ki
    • Journal of the Korean Applied Science and Technology
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    • v.35 no.4
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    • pp.985-994
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    • 2018
  • 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.