Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Operation Conditions on Pyrolysis of Larch Sawdust in a Bubbling Fluidized Bed

기포유동층 반응기를 이용한 낙엽송 톱밥의 열분해 특성

  • Yoo, Kyung-Seun (Department of Environmental Engineering, Kwangwoon University) ;
  • Eom, Min-Seop (Department of Environmental Engineering, Kwangwoon University) ;
  • Lee, See Hoon (Department of Mineral Resources and Energy Engineering, Chonbuk National University)
  • 유경선 (광운대학교 환경대학교) ;
  • 엄민섭 (광운대학교 환경대학교) ;
  • 이시훈 (전북대학교 자원에너지공학과)
  • Received : 2016.06.29
  • Accepted : 2016.07.15
  • Published : 2016.10.10
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, a bubbling fluidized bed pyrolyzer (0.076 m I.D. and 0.8 m high) was employed to investigate the fast pyrolysis characteristics of larch sawdust which is abundant in Korea. The effects of operation conditions, such as bed temperature ($350-550^{\circ}C$), fluidization velocity ratio ($U_o/U_{mf} $: 2.0-6.0) and feeding rate (2.2-7.0 g/min) on product yields and their chemical components were studied. The number of chemical compounds in the bio-oil decreased with the increasing bed temperature because of secondary pyrolysis. The effects of the Uo/Umf ratio and feeding rate on bio-oil compositions were relatively lower than those of the bed temperature.

본 연구는 0.076 m 지름과 0.8 m 높이를 가지는 기포유동층 열분해로를 이용하여 국내에서 풍부한 낙엽송 톱밥의 급속 열분해 특성을 고찰한 것이다. 유동층 열분해로의 운전 조건인 반응온도($350-550^{\circ}C$), 유동화 속도비($U_o/U_{mf} $: 2.0-6.0), 원료 주입 속도(2.2-7.0 g/min)에 따른 열분해 수율과 바이오 오일의 조성 변화를 고찰하였다. 바이오 오일에 포함된 화학 성분들의 수는 반응 온도 증가에 따른 2차 열분해로 인하여 반응 온도가 증가함에 따라서 감소하였다. 유동화 속도비와 원료 주입 속도가 유동층 열분해에 미치는 영향은 반응 온도의 영향보다 작아 열분해 온도가 가장 중요한 인자임을 확인하였다.

Keywords

References

  1. H. S. Heo, H. J. Park, J. I. Dong, S. H. Park, S. D. Kim, D. J. Suh, Y. W. Suh, S. S. Kim, and Y. K. Park, Fast pyrolysis of rice husk under different reaction conditions, J. Ind. Eng. Chem., 16, 27-31 (2010). https://doi.org/10.1016/j.jiec.2010.01.026
  2. P. Kaushal and J. Abedi, A simplified model for biomass pyrolysis in a fluidized bed reactor, J. Ind. Eng. Chem., 16, 748-755 (2010). https://doi.org/10.1016/j.jiec.2010.07.008
  3. T. A. Ngo, J. S. Kim, and S. S. Kim, Fast pyrolysis of palm kernel cake using a fluidized bed reactor: Design of experiment and characteristics of bio-oil, J. Ind. Eng. Chem., 19, 137-143 (2013). https://doi.org/10.1016/j.jiec.2012.07.015
  4. A. V. Bridgwater and V. C. Peacocke, Fast pyrolysis processes for biomass, Renew. Sustain. Energy Rev., 4, 1-73 (2000). https://doi.org/10.1016/S1364-0321(99)00007-6
  5. S. H. Lee, M. S. Eom, K. S. Yoo, N. C. Kim, J. K. Jeon, Y. K. Park, B. H. Song, and S. H. Lee, The yields and composition of bio-oil produced from Quercus acutissima in a bubbling fluidized bed pyrolyzer, J. Anal. Appl. Pyrolysis, 83, 110-114 (2008). https://doi.org/10.1016/j.jaap.2008.06.006
  6. D. K. Park, S. D. Kim, S. H. Lee, and J. G. Lee, Co-pyrolysis characteristics of sawdust and coal blend in TGA and a fixed bed reactor, Bioresour. Technol., 101, 6151-6156 (2010). https://doi.org/10.1016/j.biortech.2010.02.087
  7. M. S. Eom, S. H. Lee, K. S. Yoo, Y. K. Park, J. G. Lee, J. H. Kim, and S. H. Lee, Production of bio oil by using larch sawdust in a bubbling fluidized bed reactor, Energy Sources A, 35, 1225-1232 (2013). https://doi.org/10.1080/15567036.2011.572117
  8. A. V. Bridgwater, D. Meier, and D. Radlein, An overview of fast pyrolysis of biomass, Organ. Geochem., 30, 1479-1493 (1999). https://doi.org/10.1016/S0146-6380(99)00120-5
  9. J. W. Kook and S. H. Lee, Analysis of biomass energy potential around major cities in South Korea, Appl. Chem. Eng., 159, 3-10 (2000).
  10. S. H. Lee, J. G. Lee, J. H. Kim, and Y. C. Choi, The production of various chemicals by pyrolysis of sawdust and rice husks in a bubbling fluidized bed, J. Ind. Eng. Chem., 12, 39-43 (2006).
  11. P. T. Williams and S. Besler, The influence of temperature and heating rate on the slow pyrolysis of biomass, Renew. Energy, 7, 233-250 (1996). https://doi.org/10.1016/0960-1481(96)00006-7
  12. Z. Luo, S. Wang, Y. Liao, J. Zhou, Y. Gu, and K. Cen, Research on biomass fast pyrolysis for liquid fuel, Biomass Bioenergy, 26, 455-462 (2004). https://doi.org/10.1016/j.biombioe.2003.04.001
  13. J. Piskorz, P. Majerski, D. Radlein, D. S. Scott, and A. V. Bridgwater, Fast pyrolysis of sweet sorghum and sweet sorghum bagasse, J. Anal. Appl. Pyrolysis, 46, 15-29 (1998). https://doi.org/10.1016/S0165-2370(98)00067-9