SIMULATION AND MODELLING OF TORREFACTION AND ACTIVATION OF OIL PALM TRUNK TO PRODUCE ACTIVATED CHARCOAL

• Main Author: Agfarika Susilowati, Fira
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/55508
• Institution: Institut Teknologi Bandung

Oil palm trunk is a solid waste biomass from oil palm, which can be a new and renewable energy sources with great potential in Indonesia. One way to increase the value of oil palm trunk is by increasing its calorific value. Utilization of this OPT waste will be used to produce fuel that is relatively more environmentally friendly. One of the processes to increase the calorific value of the pest is torefaction, and its use value can be increased again by the activation process to produce activated carbon. In this research, modeling and simulation were carried out on the drying process and OPT torrefaction using three types of reactors, namely the Gibbs reactor, Yield reactor, and batch reactor. Oil palm trunk is defined as cellulose, hemicellulose, extractive, ash and water. The simulation results in the form of HHV and yield values were then validated with experimental data from Prasetyo et al. (2016). Statistical analysis to determine the effect of HHV charcoal and IR on the surface area was carried out by collecting and processing literature data. Errors from the drying simulation results against the experimental data of Prasetyo et al. (2016) with a vacuum dryer at temperatures of 145oC, 180oC, and 225oC, the HHV value was 10.96%, 4.25%, 0.005%, and the yield error value was 3.72%, 3.66%, respectively. 3.71%. Drying with an atmospheric dryer at a temperature of 110oC has an HHV error of 13.067% and a yield error of 3.713%. For the torrefaction process, the difference between the simulation results and the experiment on the Gibbs reactor is 3.68% for HHV and 14.94% for yield. Meanwhile, the yield reactor has an error of 18.60% for HHV and 3% for yield. For batch reactors, the error value of HHV and yield are 10.68% and 3.26%, respectively. Based on the sensitivity analysis, the optimum temperature for the torefaction process is 275oC. Based on statistical analysis, the impregnation ratio of ZnCl2 to produce the maximum surface area of 1652.507 m2 / g is 5.458.