• 제목, 요약, 키워드: waste lubricant oil

검색결과 8건 처리시간 0.066초

폐윤활유를 이용한 아스팔트 실란트 (Asphalt Sealant Containing the Waste Lubricant Oil)

  • 김석준;고금진
    • Elastomers and Composites
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    • v.44 no.1
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    • pp.69-75
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    • 2009
  • 본 연구에서는 폐윤활유를 이용하여 아스팔트 포장도로의 균열 보수에 주로 사용하는 아스팔트 실란트를 제조하였다. 아스팔트(AP-5), SBS 삼블록 공중합체(triblock copolymer), 점착제(석유수지) 및 산화방지제를 폐윤활유와 혼합하여 콘 침입도, 연화점, 신도, 흐름성, 인장 접착 신율 및 원상회복률을 측정하였다. 폐윤활유 함량이 증가함에 따라 아스팔트 실란트의 콘 침입도는 증가하였고 연화점, 신도 및 원상회복률은 감소하였다. 증량제로 탈크를 첨가할 경우 함량에 비례하여 연화점 및 원상회복률은 증가하였으나 콘 침입도, 신도 및 인장 접착 신율은 감소하였다. 석유수지 함량을 크게 줄여 ASTM 규격에 적합하면서도 가장 경제적인 균열 보수용 아스팔트 실란트를 제조할 수 있었다.

통합관리 시스템을 이용한 윤활유 페빈용기 회수 ㆍ 처리에 관한 연구 (A Study on the Collection and Transportation Processes of Used Oil Containers by Integrated Management System)

  • 김청균
    • Tribology and Lubricants
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    • v.19 no.2
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    • pp.94-101
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    • 2003
  • Used motor oil contains pollutants, including organic chemicals and meta]s. When disposed of improperly - in the trash, on the ground or in a sewer system - the pollutants may reach rivers, lakes or the ground water. Thus, all the waste oil products such as waste motor oil, waste oil container, and waste oil filter should be collected and transported for recycling or disposal by waste oil regulations. Because waste oil container is a valuable resource, waste oil containers can be reused, cleaned, buried, and burned for recycling processes. This paper presents the integrated management system that may increase the efficiency and productivity for collecting and reprocessing waste oil containers such as steel can and plastic container. The integrated management system consists of collection and transportation process management system and confirmation and certification process management system for waste oil containers.

열추출기술을 이용한 폐목침목처리 기초연구 (Preliminary Study on Disposal of Waste Wooden Sleeper by Thermal-Extraction)

  • 권태순;이재영;정우성
    • 한국철도학회:학술대회논문집
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    • pp.2875-2878
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    • 2011
  • The wooden sleeper has been used at the railway track. Recently the concrete sleeper is pushing the wooden sleeper out, but huge amount of waste wooden sleepers are discharged every year. Due to the contaminant of waste wooden sleeper, its disposal is very difficult. Commonly a wood preservative such as creosote is used in the manufacturing process and it becomes major contaminant after use. And the wooden sleeper is contaminated by diesel from locomotives and lubricant oil from the maintenance of railway turnout. Currently the limitary disposal methods can be used because of high toxicity of waste wooden sleeper. Therefore the preliminary study on thermal-extraction of contaminants such as creosote, diesel and lubricant oil from waste wooden sleeper was conducted and the effects of factors were investigated.

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ZnDTP를 첨가한 혼합윤활유(광유/식물성 오일)의 마모, 산화 및 전단 특성 (Wear, Oxidation and Shear Characteristics of Mixed Lubricating Oil (Mineral/Vegetable oil) with ZnDTP)

  • 임태윤;김양회;나병기
    • Tribology and Lubricants
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    • v.34 no.4
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    • pp.160-167
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    • 2018
  • Vegetable oils can contribute to the goal of energy independence and security owing to their naturally renewable resources. One of the representative vegetable oils is biodiesel, which is being used in domestic and European markets as a blended fuel with automotive diesel. Vegetable oils are promising candidates as base fluids to replace petroleum lubricants because of their excellent lubricity and biodegradability. We prepared biodiesel with a purity of 99.9% via the esterification of waste cooking oil. Blended biodiesel and Petro-lube base oil were mixed to produce five types of mixed lubricating oil. We analyzed the various characteristics of the blended biodiesel with Petro-lube base oil for different blending ratios. The lubricity of the vegetable lubricant improves as the content of biodiesel increases. In addition, since zinc dialkyldithiophosphates (ZnDTPs) are widely used as multifunctional additives in petroleum-based lubricants, we optimized the blending ratio for lubricity, oxidation stability, and shear stability by adding ZnDTP as a performance additive to improve the biodiesel properties, such as oxidation stability and hydrolysis. The optimized lubricants improve by approximately 25% in lubricity and by 20 times in oxidation stability and shear stability after the addition of ZnDTP.

윤활유 유래 철도 오염토양의 정화방법 연구 (Feasibility Study on Remediation for Railroad-contaminated Soil with Waste-lubricant)

  • 박성우;신민철;전칠성;백기태;이재영
    • 한국지하수토양환경학회지:지하수토양환경
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    • v.13 no.2
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    • pp.30-35
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    • 2008
  • 본 연구에서는 철도 윤활유 유래 오염토양을 정화하기 위해 토양세척방법, 화학적 산화법, 초음파 추출법의 타당성을 연구하였다. 세척제로는 tergitol이 사용되었으며, 세척실험은 보조용매인 iso-propyl alcohol을 사용하여 진행되었다. Tergitol이 디젤오염토양의 세척에는 효과적인 것으로 알려져 있으나, 윤활유 오염토양의 세척에는 효과적이지 못했다. iso-propyl alcohol을 보조용매로 사용한 경우 계면활성제의 토양 흡착을 증가시켜 오히려 세척효율이 감소하였다. 화학적 산화방법은 윤활유의 약 30% 정도만 제거할 수 있었다. 화학적 산화처리후 계면활성제에 의한 토양세척을 통해 약 16-17%의 추가적인 윤활유의 세척효과를 얻을 수 있었다. 초음파는 토양세척의 효과를 증가시키는 것으로 나타났다. 따라서 TPH 오염 철도 토양의 오염원에 따라 다른 방법을 적용하야 한다.

식물유 기반 에스토라이드 합성 및 윤활 특성 (Synthesis and Lubricant Properties of Vegetable Oil based on Estolides)

  • 손정매;김남균;신지훈;정근우;윤병태;김영운
    • Tribology and Lubricants
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    • v.31 no.5
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    • pp.195-204
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    • 2015
  • Several researches are focused on improving the value of fine chemicals based on biomass resources due to environmental and other concerns associated with the use of petroleum-based products. Therefore, the synthesis and application of estolides derived from plant-based waste oil materials and their application as lubricants and as processing oil for butyl rubber products have been studied. Four kinds of estolide were prepared with conversions of 71~92% over 24h using various vegetable oils, as determined by size exclusion chromatography (SEC) and nuclear magnetic resonance (NMR) spectroscopy. FT-IR spectroscopy determines the esterification of estolides using 2-ethylhexyl alcohol. The estolides have iodine values of 35~90, α-ester/α-acid ratios of 0.45~0.55, and total acid number of 114~134 mg KOH g–1. Four ball wear tests show that the wear scar diameters (WSDs) of estolides as base oil significantly decreased to 0.328~0.494 mm, compared to WSDs of 0.735 and 0.810 mm of WSD for 150N and Yubase 6, respectively, as general base oil. Thus, the estolides have better wear resistance and satisfying design objectives for the engineering of a variety of lubricant base oils.

지방산 기반 에스토라이드 합성 및 윤활특성 (Synthesis and Lubricant Properties of Estolides based on Fatty Acid)

  • 손정매;유승현;이상준;신지훈;정근우;양영도;김영운
    • Tribology and Lubricants
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    • v.30 no.5
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    • pp.256-264
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    • 2014
  • Enhancing the value of fine chemicals based on biomass resources is an important objective for addressing environmental and other concerns such as demand for renewable or green products, as well as from the political perspective to reduce dependence on fossil feedstock associated with the use of petroleum-based products. Based on these considerations, we studied the synthesis of estolide using waste plant-based oil materials and their application as lubricants and pour point depressants. Five estolides were prepared by varying molar ratio of palmitic acid (PA) to oleic acid (OA) using a reaction time of 48 h. The estolides were characterized by size exclusion chromatography (SEC) and nuclear magnetic resonance (NMR). The isolated yields were in the range of 57-78 % and purity was 93-97%, showing iodine values of 18.2-37.8, total acid numbers (TANs) of 75.6-94.2 mg KOH/g and estolide numbers (ENs) of 1.2-1.8. Increasing the ratio of OA to PA in the synthesis decreased the kinematic viscosity and clouding point of the estolides. Four ball wear test of the estolides as a base oil demonstrated that the wear scar diameter (WSD) of the estolides was significantly lower (0.320-0.495 mm) than the WSD of general base oils such as 150N and Yubase (0.735 and 0.810 mm, respectively), indicating better wear resistance of the estolides. However, the lubricant property was found to be independent of the amount of OA in the estolides. These new materials are prospective candidates for application as a lubricant base oil.

염기 처리된 montmorillonite를 이용한 다이머산 메틸에스테르의 합성 (Synthesis of Dimer Acid Methyl Ester Using Base-treated Montmorillonite)

  • 육정숙;신지훈;김영운
    • Tribology and Lubricants
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    • v.35 no.2
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    • pp.132-138
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    • 2019
  • In this study, we demonstrate the effects of the acidic properties of montmorillonite (MMT), which is commonly used as a catalyst, on the conversion and selectivity of the dimer acid methyl ester (DAME) synthesis. We synthesize DAME by the dimerization of conjugated linoleic acid methyl ester (CLAME) and oleic acid methyl ester using MMT KSF. Incidentally, trimer acid methyl ester was formed as a by-product during the DAME synthesis. There is a necessity to adequately adjust the strength and quantity of the acid site to control the selectivity of DAME. Therefore, we vary the pH of the MMT acid by using various metal hydroxides. The purpose of this study is to increase the yield of monocyclic dimer acid methyl ester, which is a substance with adequate physical properties for industrial applications (e.g., lubricant and adhesive, etc.), using a heterogeneous catalyst. We report the dimerization of fatty acid methyl ester by using base treated-KSF, and apply it to conjugated soybean oil methyl ester. Then, we transmute the acid site properties of KSF, such as pH of 5 wt.% slurry KSF and various alkali metals (Li, Na, K, Ca). Characterization of base treated-KSF using a pH meter, x-ray diffraction, inductively coupled plasma-atomic emission spectrometer, Brunauer-Emmett-Teller surface analysis, and temperature-programmed desorption. We conduct an analysis of CLAME and DAME using nuclear magnetic resonance spectroscopy, gas chromatography, and gel permeation chromatography. Through these experiments, we demonstrate the effects of the acidic properties of KSF on the conversion and selectivity of the DAME synthesis, and evaluate its industrial potential by application to waste vegetable oil.