DISTILLATE AROMATIC EXTRACT PRODUCT QUALITY PREDICTION BASED ON VISCOSITY AND AROMATIC CONTENT OF RAW MATERIAL

• Main Author: AKHIR JULIMA, RINZAN
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24014
• Institution: Institut Teknologi Bandung

Rubber Processing Oil (RPO) is an additive material base oil to assist compound process and raw material campuraning in tires manufacturing industry. Technology developments in tires manufacturing industry must comply with environmental regulation, therefore the using of RPO as an additive materials should be more environmental friendly. Therefore further processing of the hydrocarbon additive must be done to meet environmental parameters. <br /> <br /> <br /> Treated Distillate Aromatic Extract (TDAE) is a product of further extraction process from feed Distillate Aromatic Extract (DAE), to improve PCA content less than 3% by weight. TDAE is used as RPO in the compound tire manufacturing industry. In addition to PCA levels, product quality TDAE that have high sales value has a value of kinematic viscosity at 100oC in the range of 17-22 cSt. This thesis aims to obtain a mathematical model equation of the correlation between the type of feed DAE and PCA levels against the kinematic viscosity which can be useful in optimizing product quality TDAE appropriate to market requirements. <br /> <br /> <br /> Pertamina RPO products’s with brand Minarex (Pertamina Rubber Extender Oil) is a product extracted from furfural extraction process that has gone through the process of purification / separation solvent. The extract product can be combined with component I as a viscosifier and n-hexane as dilluent then fed back into the next solvent furfural extraction process to reduce levels of PCA. <br /> <br /> <br /> The research in this thesis will be done by solvent extraction process stages with the feed DAE to solvent ratio variations 1:0.5; 1:0.75; 1:1; 1:1.5; 1:2; 1:2.5; 1:3; 1:3.3 and the variations of feed DAE Minarex H; Minarex C; Minarex D; Minarex campuranture (H, C, D, and component I). This thesis also will be done the process of adding component I as viscosifier into a single feed DAE (Minarex H; Minarex C; Minarex D) and the feed campuranture DAE (H, C, D, and component I). <br /> <br /> <br /> The first objective is to determine the effect of component I toward the value of the kinematic viscosity, levels of PCA and refractive index feed DAE. The second objective is to determine the effect of a reduction in levels of PCA via solvent extraction process multi stages toward the value of kinematic viscosity and refractive index of TDAE products. Extra objective is to design simulation of feed DAE campuraning process, TDAE extraction process and to validate quality of TDAE between simulation and laboratorium analysis. <br /> <br /> <br /> Result and data processing from first observation objective shown performance of component I by adding 10-50% as viscosifier around 20-80% reducing kinematic viscosity (100oC) of DAE feed. The greatest effect was obtained on Minarex H and Minarex D, due to its high initial value of kinematic viscosity 63 cst and 86 cst. In addition, component I is also capable of reducing a small amount of PCA and DAE refractive index. The correlation mathematical equation for adding component I to the value viscosity of mix DAE gives deviation between equation to calculated based on mixing ratio (1.3956 cst) with correcion constanta f1 (20.57). The correlation mathematical equations between viscosity changes to PCA levels in the mix samples of DAE gives deviation between equation to calculated based on mixing ratio (0.551 %) with correcion constanta f1 (0.82). <br /> <br /> <br /> Furthermore, the second objective shown data on decreasing yield of rafinat and conversion of TDAE product along with addition of furfural solvent ratio and increasing of extraction step. The result of TDAE product analysis at solvent ratio of 3.33 and 4th stage obtained 2% rafinate yield and 35% conversion, with PCA 3.43%, kinematic viscosity (100oC) 7.3 cst and refractive index (20oC) 1.5199. Decreased levels of PCA and refractive index showed a gradual decreasing pattern along with an increase in solvent ratio ratio and extraction stage. Meanwhile, the significant decrease in viscosity occurred only in the first phase extraction, but in the subsequent stages there was no significant decrease in value and even tended to be stable. <br /> <br /> <br /> A mathematical approach was performed in order to obtain TDAE product with a PCA level of less than 3% and a kinematic viscosity of 100oC 17-22 cst, DAE feed require maximum of 30% PCA and kinematic viscosity range (100oC) 73-96 cst. The simulation for DAE feed campuraning process shown similarities between simulated data and laboratory analysis data with correction factor for PCA level 1.3929. While for kinematic viscosity and density data get lower correction factor that is 1.0714 and 1.0550. Therefore the DAE feed simulation can be used to predict value of viscosity and density in DAE feed campuraning process, later the data can be incorporated into the viscosity correlation equation to predict PCA level, provided that the quality of DAE used has the same trend as the thesis. <br />