Bioavtur Synthesis from Palm Fatty Acid Distillate through Hydrotreating and Hydrocracking Processes
Abstract
Increasing concern in fossil fuel depletion and CO2 emissions create an urgent need for biofuel substitution. Bio-jet fuel is a possible alternative for conventional jet fuels which currently accounts for 2% of the world’s CO2 emission. Palm Fatty Acid Distillate (PFAD) is the byproduct of palm oil refinery process, which has a potential to become a promising raw material for the synthesis of bioavtur due to its high free fatty acid content. The oil-to-jet pathway is a possible route to produce bioavtur from PFAD, which includes hydrotreating, hydrocracking, and hydroisomerization processes. This research aims to investigate the hydrotreating and hydrocracking processes. The parameters that were investigated are temperature, solvent to PFAD ratio, catalyst loading, and pressure. The parameters variations were as follows: the temperature at 350oC and 400oC, the pressure at 40 bar and 32.5 bar, the solvent to PFAD ratio at 2:1 and 1:1, and the catalyst loading (%wt) at 1%, 2%, and 3%. Presulfided NiMo/γ-Al2O3 PIDO 120 1.3 was used for one-step hydrotreating and hydrocracking processes. Results indicated that the 400oC provided better free fatty acid (FFA) conversion. FFA is also almost completely removed when the catalyst used is 3% weight. Solvent to PFAD ratio affected the FFA conversion marginally, while higher catalyst loading (3%) improved the FFA conversion. Gas chromatography results show that the hydrocarbon chains are successfully hydrocracked into C9-C17. The best selectivity of the product to bioavtur range was calculated at 68.99%. Solvent ratio affects the hydrocracking more significantly than the catalyst loading. One sample with temperature operation 400oC and solvent to PFAD ratio 1:1 was in the range of conventional avtur density. With the method used in this study, it can be concluded that PFAD is a promising raw material for bioavtur.
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References
Blesvid, B., Yelmida, & Zultinar. (2013). Perengkahan Katalitik Palm Fatty Acid Distillate ( PFAD ) Menjadi Biofuel Dengan Katalis Abu TKS Variasi Temperatur dan Berat Katalis. Jurnal Rekayasa Kimia Dan Lingkungan, vol 10 No, 1–6.
Chang, A. S., Sherazi, S. T. H., Kandhro, A. A., Mahesar, S. A., Chang, F., Shah, S. N., … Panhwar, T. (2016). Characterization of Palm Fatty Acid Distillate of Different Oil Processing Industries of Pakistan. Journal of Oleo Science, 65(11), 897–901. https://doi.org/10.5650/jos.ess16073
Dhar, A., Vekariya, R. L., & Sharma, P. (2017). Kinetics and mechanistic study of n-alkane hydroisomerization reaction on Pt-doped γ-alumina catalyst. Petroleum, 3(4), 489–495. https://doi.org/10.1016/j.petlm.2017.02.001
Dwiratna, B., & Soebagjo, D. (2015). PENGEMBANGAN KATALIS BERBASIS NiMo ALUMINA UNTUK REAKSI HIDRODEOKSIGENASI MINYAK NABATI MENJADI BIOAVTUR Development of NiMo Alumina Based Catalyst To Make Bioavtur From Plant Oil Through Hydrodeoxigenation Reaction, 75–80.
Eller, Z., Varga, Z., & Hancsók, J. (2013). Production of jet fuel from renewable source material. Chemical Engineering Transactions, 35, 1057–1062. https://doi.org/10.3303/CET1335176
Eller, Z., Varga, Z., & Hancsók, J. (2016). Advanced production process of jet fuel components from technical grade coconut oil with special hydrocracking. Fuel, 182, 713–720. https://doi.org/10.1016/j.fuel.2016.06.055
Huber, G. W., O’Connor, P., & Corma, A. (2007). Processing biomass in conventional oil refineries: Production of high quality diesel by hydrotreating vegetable oils in heavy vacuum oil mixtures. Applied Catalysis A: General, 329, 120–129. https://doi.org/10.1016/j.apcata.2007.07.002
International Energy Association. (2016). Oil Products Consumption. Retrieved from https://www.iea.org/statistics/?country=WORLD&year=2016&category=Key indicators&indicator=OilProductsCons&mode=chart&categoryBrowse=false&dataTable=OIL&showDataTable=false
Kim, M. Y., Kim, J. K., Lee, M. E., Lee, S., & Choi, M. (2017). Maximizing Biojet Fuel Production from Triglyceride: Importance of the Hydrocracking Catalyst and Separate Deoxygenation/Hydrocracking Steps. ACS Catalysis, 7(9), 6256–6267. https://doi.org/10.1021/acscatal.7b01326
Krár, M., Kovács, S., Kalló, D., & Hancsók, J. (2010). Fuel purpose hydrotreating of sunflower oil on CoMo/Al2O3 catalyst. Bioresource Technology, 101(23), 9287–9293. https://doi.org/10.1016/j.biortech.2010.06.107
Liu, S., Zhu, Q., Guan, Q., He, L., & Li, W. (2015). Bio-aviation fuel production from hydroprocessing castor oil promoted by the nickel-based bifunctional catalysts. Bioresource Technology, 183, 93–100. https://doi.org/10.1016/j.biortech.2015.02.056
PERTAMINA. (2017). Annual report. Retrieved from https://www.pertamina.com/Media/File/AR-Pertamina-2017_INA-fin.pdf
Ruliana. (2017). Studi Karakteristik Bioavtur dari Minyak Nyamplung (Calophyllum inophyllum Linn Oil) dengan metode hydrocracking kataitik. Universitas Negeri Jakarta.
Scherzer, J., & Gruia, A. (1996). Hydrocracking Science and Technology. CRC Press.
Sotelo-Boyás, R., Liu, Y., & Minowa, T. (2011). Renewable Diesel Production from the Hydrotrea[1] R. Sotelo-Boyás, Y. Liu, und T. Minowa, „Renewable Diesel Production from the Hydrotreating of Rapeseed Oil with Pt/Zeolite and NiMo/Al 2 O 3 Catalysts“, Ind. Eng. Chem. Res., Bd. 50, Nr. 5, S. 2791–2799,. Industrial & Engineering Chemistry Research, 50(5), 2791–2799. https://doi.org/10.1021/ie100824d
Tiwari, R., Rana, B. S., Kumar, R., Verma, D., Kumar, R., Joshi, R. K., … Sinha, A. K. (2011). Hydrotreating and hydrocracking catalysts for processing of waste soya-oil and refinery-oil mixtures. Catalysis Communications, 12(6), 559–562. https://doi.org/10.1016/j.catcom.2010.12.008
Vásquez, M. C., Silva, E. E., & Castillo, E. F. (2017). Hydrotreatment of vegetable oils: A review of the technologies and its developments for jet biofuel production. Biomass and Bioenergy, 105, 197–206. https://doi.org/10.1016/j.biombioe.2017.07.008
Wang, W.-C., Tao, L., Markham, J., Zhang, Y., Tan, E., Batan, L., … Biddy, M. (2016). Review of Bio-jet fuel conversion technologies. Technical Report NREL/TP-5100-66291, (July), 106. https://doi.org/10.1016/j.rser.2015.09.016
Weitkamp, J. (2012). Catalytic Hydrocracking-Mechanisms and Versatility of the Process. ChemCatChem, 4(3), 292–306. https://doi.org/10.1002/cctc.201100315
Wiethoff, B. (2018). Preparation of PFAD for Bio-Aviation Fuel Production, (15).
Wiratama, I. G., & Hudaya, T. (2014). Kajian Hidrodeoksigenasi Minyak Biji Kapok (Ceiba Pentandra) dengan Katalis Ni-Mo/γ-Al2O3 untuk Sintesa Biohidrokarbon. Bandung.
Yang, Y., Wang, Q., Zhang, X., Wang, L., & Li, G. (2013). Hydrotreating of C 18 fatty acids to hydrocarbons on sulphided NiW/SiO 2 -Al 2 O 3. Fuel Processing Technology, 116, 165–174. https://doi.org/10.1016/j.fuproc.2013.05.008
