TY - JOUR
T1 - Prediction of the effects of the inlet velocity and the reactor length on the performance of a trickle-bed reactor for renewable diesel production
AU - Muharam, Yuswan
AU - Nugraha, Osman Abhimata
N1 - Funding Information:
the production rate in the same way with the others, i.e., the TG conversion, the yield, and the product purity. However, beyond this point, as the inlet gas velocity increases, the production rate decreases. The higher inlet velocity leads to the higher feed flow rate and the greater number of reactants entering the reactor. Hypothetically, when 100% conversion and yield are achieved, then greater number of reactants leads to greater number of products or in other words, higher production rate. In reality, since the conversion and the yield are inversely proportional to the feed Acknowledgments: We express our gratitude to the University of Indonesia which has funded this research through the scheme of Hibah Publikasi Internasional Terindeks untuk Tugas Akhir Mahasiswa No 2100/UN2.R12/HKP.05.00/2016.
Publisher Copyright:
© 2017 American Scientific Publishers All rights reserved.
PY - 2017
Y1 - 2017
N2 - The effects of the inlet velocity and the bed length on the triglyceride conversion, the production rate, and the purity of renewable diesel in a high pressure multitubular trickle-bed reactor were investigated in the research. Phenomenological modeling and simulation of single tube of the reactor were performed to achieve the aim. The axisymmetric 2-D model takes into account species mass balance, energy balance and momentum balance with gas and liquid Darcy law approach. Reactions occur on a spherical Ni/Mo/P/Al2O3 catalyst with 1.6 mm in diameter. Triglycerides in the feed is diluted in diesel at a concentration of 5% to prevent catalyst deactivation. The simulation results show that the uniform temperature occurs in the reactor when the inlet temperature is set equal to the wall temperature and the aspect ratio equals or greater than 100. Hereafter, the reactor length varied but the aspect ratio kept to be 100. The highest purity of C17 and C18 products, i.e., 98.92%, is achieved when the reactor length is 10 m and the hydrogen velocity is 0.01 m/s. The highest production rate of 28.42 kg/day is obtained when the reactor length is 10 m and the hydrogen velocity is 0.03 m/s. Under this condition, the purity of C17 and C18 products is 96.75% and the triglyceride conversion is 78.58%.
AB - The effects of the inlet velocity and the bed length on the triglyceride conversion, the production rate, and the purity of renewable diesel in a high pressure multitubular trickle-bed reactor were investigated in the research. Phenomenological modeling and simulation of single tube of the reactor were performed to achieve the aim. The axisymmetric 2-D model takes into account species mass balance, energy balance and momentum balance with gas and liquid Darcy law approach. Reactions occur on a spherical Ni/Mo/P/Al2O3 catalyst with 1.6 mm in diameter. Triglycerides in the feed is diluted in diesel at a concentration of 5% to prevent catalyst deactivation. The simulation results show that the uniform temperature occurs in the reactor when the inlet temperature is set equal to the wall temperature and the aspect ratio equals or greater than 100. Hereafter, the reactor length varied but the aspect ratio kept to be 100. The highest purity of C17 and C18 products, i.e., 98.92%, is achieved when the reactor length is 10 m and the hydrogen velocity is 0.01 m/s. The highest production rate of 28.42 kg/day is obtained when the reactor length is 10 m and the hydrogen velocity is 0.03 m/s. Under this condition, the purity of C17 and C18 products is 96.75% and the triglyceride conversion is 78.58%.
KW - Modeling
KW - Renewable diesel
KW - Trickle-bed reactor
KW - Triglyceride
UR - http://www.scopus.com/inward/record.url?scp=85027858599&partnerID=8YFLogxK
U2 - 10.1166/asl.2017.8781
DO - 10.1166/asl.2017.8781
M3 - Article
AN - SCOPUS:85027858599
VL - 23
SP - 5609
EP - 5614
JO - Advanced Science Letters
JF - Advanced Science Letters
SN - 1936-6612
IS - 6
ER -