SIMULATION OF BIOETHANOL PURIFICATION PROCESS DEVELOPMENT FOR MACHINE FUEL SPECIFICATION

• Main Author: Hifdiah Maulidini, Sita
• Format: Theses
• Language: Indonesia
• Subjects: Teknik kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/46330
• Institution: Institut Teknologi Bandung

Increasing population and the use of fossil fuels, increasing the cost of oil products and decreasing reserves of these resources have encouraged researchers to look for new alternative resources. One alternative energy that is being developed in Indonesia and several countries is bioetanol fuel which is processed from renewable sources. Bioetanol must have the same purity or higher than 99-99,8% by weight according to international standards to be used as fuel or additives. Conventional extraction distillation presents relatively high energy costs so that advanced distillation technology is proposed based on the intensification and integration of processes, namely dividing wall columns (DWC) which is the implementation of a totally thermally coupled distillation arrangement in a single shell. This study aims to design and optimize the configuration of conventional extractive distillation columns in ethanol-water separation with ethylene glycol, to develop steps in simulating and optimizing distillation with E-DWC configuration in ethanol-water separation with ethylene glycol, and conducting techno-economic analysis detailed configuration of conventional columns and E-DWC columns for ethanol-water separation with ethylene glycol. From the simulation results, it was found that total stages in each column base case simulation is 30, 25, and 4 with flowrate of ethanol 99,9 % weight is given 6304 kg/hour and flowrate of solvent needed is 34.140 kg/hr. The purity of water 2 byproduct in SRC is ethanol with 0,8679 % weight and after optimization become 0,6872 % weight. In E-DWC simulation, total stages is 74 with main product of ethanol 10090 kg/hour and flowrate of solvent is needed 33880 kg/hour. E-DWC can produce ethanol products according to fuel standards of 99.95% weight with, Capital costs of E-DWC are more efficient in 86%, and TAC saves 6% more than extractive distillation.