• Title/Summary/Keyword: pyrolytic oil

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Recovery of Available Resource from Waste Polymer using Thermal Degradation Process (고분자 폐가물의 열분해공정에서 유효자원의 회수)

  • 김형진;정수경;홍인권
    • Journal of environmental and Sanitary engineering
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    • v.15 no.4
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    • pp.98-104
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    • 2000
  • Commercial rubber(IR, NR, BR), SBR, and tire were degraded by thermal degradation process. The oil yield of rubbers and tire ranges about 37~86%, it was increased with increase of operation temperature in pyrolysis. And the yield of pyrolytic oil was increased with increase of heating rate. The maximum oil yields of IR, NR, BR, SBR, and tire were 80, 73, 83, 86 and 55% each at $700^{\circ}C$ with a heating rate of $20^{\circ}C$/min, respectively. The pyrolytic oil components were consisted of about 50 aromatic compounds. The calorific value of purolytic oil of commercial rubber, SBR, and tire was measured by calorimeter, it was 39~40 kJ/g. The BET surface area of pyroblack was $47~63m^2/g$. The optimum condition of pyrolysis was operating temperature of $700^{\circ}C$ with heating rate of $20^{\circ}C$. Therefore, the pyrolytic oil and pyroblack are possible to alternative fuel and carbon black.

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Modification of Urea Formaldehyde Resin with Pyrolytic Oil on Particleboard

  • Adegoke, Olaoluwa Adeniyi;Ogunsanwo, Olukayode Yekeen;Olaoye, Kayode Oladayo
    • Journal of Forest and Environmental Science
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    • v.36 no.3
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    • pp.219-224
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    • 2020
  • Urea formaldehyde resins are widely used in the manufacturing of wood composite and their usage is always combined with release of formaldehyde characterized to be hazardous to health during and after the manufacturing of the products. This study investigates the effectiveness of wood-based adhesive from oil of pyrolysed Triplochiton scleroxylon sawdust for the production of composite board. The wood-derived Pyrolytic Oil (PyO) was blended with Urea Formaldehyde (UF) resin to formed Pyrolytic Oil-Urea Formaldehyde (PyOUF). The obtained PyOUF called Wood-Based Adhesives at four blends and control (UF) viz; 1:1, 1:2, 1:3, 2:1, 1:3 were further employed to prepare the composite board and test for their bonding strength by physical (water absorption-WA and thickness swelling-Th.S) and mechanical properties (modulus of elasticity-MOE, modulus of rupture-MOR, and impact bending-IB). Data obtained was analysed using analysis of variance at α 0.05. The result of analysis of variance conducted on physical properties show significant difference (p≤0.05) between the WA values obtained when testing the different blending proportion of PyOUF and likewise between 2 and 24 h of immersion. PyOUF had significant effect (p≤0.05) on Th. S for 24 h but no significant different (p>0.05) for the 2 h period of soaking. The analysis of variance on mechanical properties of the composite board (MOE, MOR, and IB) show significance differences (p≤0.05) between the strength values obtained when testing the different ratios of PyO with UF. PyO content influenced the properties of the boards and it is evident that PyO can be used in the manufacture of composite board.

Catalytic Upgrading of Bio-oil Produced from Japanese Larch over MCM-41 (MCM-41 촉매 상에서 일본 낙엽송으로부터 생성된 바이오 오일의 접촉 개질 반응)

  • Park, Hyun Ju;Jeon, Jong-Ki;Jung, Kyeong Youl;Ko, Young Soo;Sohn, Jung Min;Park, Young-Kwon
    • Korean Chemical Engineering Research
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    • v.45 no.4
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    • pp.340-344
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    • 2007
  • Catalytic upgrading of pyrolytic bio-oil produced from Japanes Larch was carried out over MCM-41 catalyst. Oil with enhanced stability was produced by the MCM-41 catalyst due to transform oxygen known as a main cause for the instability of bio-oil into $H_2O$, CO and $CO_2$. In addition, the MCM-41 catalyst produced the larger amount of phenolic compounds in the pyrolytic bio-oil product compared with that in the bio-oil produced without catalyst. Especially, the catalytic activity of Al-MCM-41 for the bio-oil upgrading was higher than that of Si-MCM-41 because Al-MCM-41 has the larger amount of acid sites. Also, the better reforming result was obtained when pyrolytic bio-oil vapor passed through catalytic layer rather than Japanese Larch was mixed with catalyst directly.

Comparison of Waste-Plastic Recycling Methods for Environmental Assessment (환경성 평가를 위한 폐플라스틱 재활용 방법들의 비교)

  • Park, Chan-Hyuk;Choi, Suk-Soon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.14 no.2
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    • pp.101-111
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    • 2006
  • In the present work, life cycle assessments (LCA) of various waste-plastic recycling methods (material recycling, refused derived fuel (RDF), recycling on furnace, and pyrolytic oil production) were carried out to investigate their impacts on the environment. Six types of impacts were considered. While the impact on global warming was found to be significant, the impact on others were negligible. The impact values on the global warming caused by the material recycling, RDF, and the recycling on furnace were negative, which implied that their impacts could be noticeably reduced when waste-plastic are used as an alternative to newly drawn plastics. The pyrolytic oil production, however, showed positive value, which may be due to the carbon dioxide produced during electric power generation. The pyrolytic oil production had the largest impact on the ozone layer destruction, which was due to ozone depleting substances produced from the process itself. These results can be used as a useful data for the enhancement of waste-plastic recycling.

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Analysis of Thermal Degradation Process if Commercial Rubber for Environmentally Benign Process (범용고무의 환경친화적 처리를 위한 열분해 공정 해석)

  • 김형진;정수경
    • Journal of environmental and Sanitary engineering
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    • v.15 no.4
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    • pp.123-133
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    • 2000
  • The kinetic analysis was carried out for commercial rubbers such as NR, IR, BR, SBR 1500, and SBR 1700. Kinetic analysis for the commercial rubbers was performed using the thermogravimetric method, with which the activation energies of NR obtained by Kissinger, Friedman, and Ozawa's method were 195.0, 198.3 and 186.3kJ/mol, whereas that of SBR 1500 were 246.4, 247.5 and 254.8kJ/mol, respectively. It was shown that the yield of pyrolytic oil was generally increased with final temperature increasing, yet slightly decreased or increased over $700^{\circ}C$. Considering the effect of heating rate, it was found that the yield of pyrolytic oil was not consistent for each sample. The number average molecular weight of SBR 1500 was in the range of 740~2486. The calorific value of SBR 1500 was 39~40kJ/g, which were made comparative study of the conventional fuel such as kerosene, diesel, light fuel, and heavy fuel. Therefore it was essential that the selection of the suitable kinetic model and the mathematical solution because of the difference in parameters obtained from each method. It was proposed that the range of $600~700^{\circ}C$ in final temperature and high heating rate due to short run time. It was suggested that the pyrolytic oil be available to use to the fuel.

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A Study on the Fast Pyrolysis Characteristics of Biomass in a Fluidized Bed Reactor (유동층 반응기를 이용한 바이오매스의 급속열분해 특성 연구)

  • Yoo, Kyung-Seun;Eom, Min-Seop;Park, Eun-Kwang;Kim, Nam-Chan
    • Proceedings of the Korean Institute of Resources Recycling Conference
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    • 2006.09a
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    • pp.15-32
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    • 2006
  • Biomass had been attracted public attention as eco-friendly resource which not increases the greenhouse gas like carbon dioxide. In this study, it had been collected pyrolytic products such as bio-oil, char and pyrolytic gas from various biomass in a fluidized bed reactor which is one of the fast pyrolysis processes. To understand the characteristics of biomass pyrolysis, the variation of products yield and chemical composition was determined with various operating parameters like temperature, gas velocity($U_{0}/U_{mf}$) and bed height(L/D). In the optimum operating conditions, gas yield and water content was the lowest and concentration of guaiacols and syringols were the highest. The maximum yields of bio-oil was from 55% to 58% at $400^{\circ}C$.

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Effect of Particle Size and Moisture Content of Woody Biomass on the Feature of Pyrolytic Products (급속열분해 공정에서 바이오매스의 입자크기와 수분 함량이 열분해 산물의 특성에 미치는 영향)

  • Hwang, Hyewon;Oh, Shinyoung;Kim, Jae-Young;Lee, Soomin;Cho, Taesu;Choi, Joon Weon
    • Journal of the Korean Wood Science and Technology
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    • v.40 no.6
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    • pp.445-453
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    • 2012
  • In this study the effects of particle size and water content on the yields and physical/chemical properties of pyrolytic products were investigated through fast-pyrolysis of yellow poplar. Water content was critical parameters influencing the properties of bio-oil. The yields of bio-oil were increased with decreasing water content. However, the yield of pyrolytic product was not clearly influenced by feedstock's particle size. The water content, pH and HHV (Higher Heating Value) of bio-oil were measured to 20~30%, 2.2~2.4 and 16.6~18.5MJ/kg, respectively. The water content of feedstock was clearly influenced to water content of bio-oil. In terms of bio-char, HHV of them were measured to 26.2~30.1 MJ/kg with high content of carbon over 80%.

Effect of Reaction Temperature Program on Thermal Degradation of Low-quality Pyrolytic Oil for Bench-scale Continuous Reaction System (벤치 규모 연속반응시스템에서 저급 열분해유 분해반응에 대한 반응온도 프로그램의 영향)

  • Lee, Kyong-Hwan;Nam, Ki-Yun
    • Clean Technology
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    • v.15 no.3
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    • pp.186-193
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    • 2009
  • The characteristics of product materials obtained from thermal degradation of low-qualify pyrolytic oil were investigated in this study. The reactants were produced by pyrolysis of mixed plastic waste with film type in a commercial rotary kiln reaction system. The properties of reactants were measured by elemental analysis, calorimetry analysis and SIMDIST analyst. The result of degradation experiments with different reaction temperature programs was discussed through product yields, cumulative yields and production rates of oil products. The multi-step reaction temperature program resulted in higher yields of product oils and lower yields of residues than one-step reaction temperature program. The product characteristics such as production yield and the rate of oil products etc. were influenced by reaction temperature program in the continuous thermal degradation.

Oil Recovery through Wasts Tire/Wasts Oil Pyrolysis (폐타이어/폐유의 복합 열분해에 의한 오일화 공정개발 연구)

  • 김동찬;신대현;정수현
    • Resources Recycling
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    • v.4 no.4
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    • pp.12-15
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    • 1995
  • In this paper, some representative waste tire pyrolysis were investigated together with the analysis of the problems associated with the commercialization of various waste tire treatment technologies. Also, R & D results on recovering the oil from the pyrolysis of waste tires, when waste oil was used as a heating medium, were summarized in this study. Experimental results show that the present pyrolysis process has both lower pyrolytic temperature and higher pyrolysis rate than usual one and that the quality of the product oil and residue obtained was relatively even with large availability.

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The Pyrolytic Behavior Waste Tire under Microwave Heating (마이크로파 가열에 의한 폐타이어 열분해 거동)

  • Kim, Seong-Soo;Kim, Ji-Geon;Cho, Jung-Lae;Park, Dong-Chul
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.471-474
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    • 2008
  • The pyrolytic behavior of waste tire under microwave heating was investigated. Experiments were conducted using a lab- and bench-scale system to delineate the effects of microwave output power on the response. As the results of experiments, it was found that as the microwave output power was increased between 0.84 and 3.04 kW/kg, the oil yield and required time rapidly increased and decreased, respectively. With further increase of the microwave output power, the oil yield and required time did not change significantly.

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