지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Spent coffee is one of biomass sources to be converted into bio-oil. However, the bio-oil should be further upgraded to achieve a higher quality bio-oil because of its high oxygen content. Deoxygenation under hydrotreating using different catalysts (catalytic hydrodeoxygenation; HDO) is considered as one of the promising methods for upgrading bio-oil from pyrolysis by removal of O-containing groups.
In this study, the HDO of spent coffee bio-oil, which was collected from fast pyrolysis of spent coffee (460 ℃, 2.0 × U<SUB>mf</SUB>), was carried out in an autoclave. The product yields were 72.16~96.76 wt% of bio-oil, 0~18.59 wt% of char, and 3.24~9.25 wt% of gas obtained in 30 min at temperatures between 250 ℃ and 350 ℃ and pressure in the range of 3 to 9 bar. The highest yield of bio-oil of 97.13% was achieved at 250 ℃ and 3 bar, with high selectivity of D-Allose. The carbon number distribution of the bio-oil was analyzed based on the concept of simulated distillation. The C<SUB>12</SUB>~C<SUB>14</SUB> fraction increased from 22.98 wt% to 27.30 wt%, whereas the C<SUB>19</SUB>~C<SUB>26</SUB> fraction decreased from 24,74 wt% to 17.18 wt% with increasing reaction time. Bio-oil yields were slightly decreased when the HZSM-5 catalyst and dolomite were used. The selectivity of CO was increased at the HZSM-5 catalyst and decreased at the dolomite.
In this study, the HDO of spent coffee bio-oil, which was collected from fast pyrolysis of spent coffee (460 ℃, 2.0 × U<SUB>mf</SUB>), was carried out in an autoclave. The product yields were 72.16~96.76 wt% of bio-oil, 0~18.59 wt% of char, and 3.24~9.25 wt% of gas obtained in 30 min at temperatures between 250 ℃ and 350 ℃ and pressure in the range of 3 to 9 bar. The highest yield of bio-oil of 97.13% was achieved at 250 ℃ and 3 bar, with high selectivity of D-Allose. The carbon number distribution of the bio-oil was analyzed based on the concept of simulated distillation. The C<SUB>12</SUB>~C<SUB>14</SUB> fraction increased from 22.98 wt% to 27.30 wt%, whereas the C<SUB>19</SUB>~C<SUB>26</SUB> fraction decreased from 24,74 wt% to 17.18 wt% with increasing reaction time. Bio-oil yields were slightly decreased when the HZSM-5 catalyst and dolomite were used. The selectivity of CO was increased at the HZSM-5 catalyst and decreased at the dolomite.
목차
Abstract
1. Introduction
2. Experimental
3. Reseults and discussion
4. Conclusions
References
참고문헌 (22)
참고문헌 신청
Renewables 2018
Biomass
Ly, H. V. / 2018 / Catalytic Pyrolysis of Tulip Tree (Liriodendron) in Bubbling Fluidized-bed Reactor for Upgrading Bio-oil using Dolomite catalyst / Energy 162:564~575
Kim, S. -S. / 2014 / Thermogravimetric and Kinetic Study of Pinyon Pine in the Various Gases / Bioresour. Technol 156:297~302
Ly, H. V / 2015 / Effect of Acid Washing on Pyrolysis of Cladophora Socialis Alga in Microtubing Reactor / Energ. Convers. Manage 106:260~267
Biomass
Ly, H. V. / 2018 / Catalytic Pyrolysis of Tulip Tree (Liriodendron) in Bubbling Fluidized-bed Reactor for Upgrading Bio-oil using Dolomite catalyst / Energy 162:564~575
Kim, S. -S. / 2014 / Thermogravimetric and Kinetic Study of Pinyon Pine in the Various Gases / Bioresour. Technol 156:297~302
Ly, H. V / 2015 / Effect of Acid Washing on Pyrolysis of Cladophora Socialis Alga in Microtubing Reactor / Energ. Convers. Manage 106:260~267
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