#TITLE_ALTERNATIVE#

• Main Author: Ariyanti (NIM 23099008), Desire
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/7588
• Institution: Institut Teknologi Bandung

ABSTRACT: <br /> <br /> <br /> 26DMN is a starting material for manufacturing high performance engineering plastics and liquid crystals. This polyaromatic compound can be obtained from aromatic fractions of petroleum cracking residue and coal tars. However, 26DMN exists as isomeric mixtures which can not be separated by conventional methods. <br /> <br /> <br /> In general, this research is directed to study the separation of 26DMN from its isomers by extractive crystallization in which 27DMN is selected as impurity, because the most difficult separation occurs between 27DMN and 26DMN. Extractive crystallization combines crystallization and dissolution operations in such away that a solid mixture can be fractionated into pure components with 100% yield. In particular, this research is aimed to develop extractive crystallization processes for separation of dimethylnaphthalene isomers, to simulate and to compare the performance of the processes developed. <br /> <br /> <br /> From the simulations, it was found that the best alternative process is process B (involving one dissolver, two filters, one crystallizer, and two evaporators), with ethylacetate as solvent and operates at cold temperature of 35 degree C and hot temperature of 50 degree C.