LIKUIFAKSI BATUBARA LIGNIT DENGAN PELARUT BIFUNGSIONAL DAN KATALIS PERENGKAHAN GANDA MENGHASILKAN BENSIN

INTANG, AMBO and Bustan, Muhammad Djoni and Haryati, Sri (2024) LIKUIFAKSI BATUBARA LIGNIT DENGAN PELARUT BIFUNGSIONAL DAN KATALIS PERENGKAHAN GANDA MENGHASILKAN BENSIN. Doctoral thesis, Sriwijaya University.

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Abstract

The coalliquefaction technique used in this research is direct liquefactionof solvent derivatives into DCLyield product, which is an analogy of combining solvent extraction and catalityc liquefaction processes. This method is able to solve the technological problems of processing low-grade coal (lignite) into liquid fuels using materials and materials available in the market and the surrounding environment. This research modifies Natural Zeolite Lampung (NZL) with swelling solvent synthesis method into hierarchical zeolite through dealumination and desilication process at the same time, followed by the reduction of alkali and alkaline earth metal compounds in zeolite which inhibit catalyst activation, then impregnated with transition metals and alkali metals that produce active zeolite catalysts that are able to work effectively at low and high temperatures and are not easy to deactivate catalysts due to the acidity of Lewis and Bronsted which strengthen each other, this is known from the results of catalyst characterization through XRD, FTIR, SEM-EDX, BET, NH3TPD, and TGA analysis. Bifunctional solvent was used as the solvent in this study, by considering the solvent's nonsolubility and polarity during the DCL process. This method is able to operate at low temperature, low pressure, which is supported by the process time, the right coal catalyst ratio and at a fixed solvent volume. In DCL operation with solvent volume of 100 ml, temperature of 147 0Cand at atmospheric pressure with operating time variations of 30, 40, 50, 60 and 70 minutes, as well as coal mass variations of 1, 2, and 3gr against catalyst mass variations of 0.1, 0.2, and 0.3 gr so that the coal catalyst ratio is obtained for each coal mass; 1gr (R10, R20, R30), 2gr (R5, R10, R15) and 3gr (R3.33, R6.66, R10) and 45 processes occurred. This research produces DCL products based on PONA groups or Aliphatic and Aromatic groups on the results of FTIR spectra of bifunctional solvents and gasoline composition determined by GC-MS analysis. At R6.66 in the 60 minute process operating time, the aliphatic group is much lower than the aliphatic group of bifunctional solvent and gasoline, while the aromatic group is much higher than gasoline, especially with bifunctional solvent. At R3.33 and R10 in the process operating time of 60 minutes the aliphatic group is lower than the aliphatic group of bifunctional solvent and gasoline while the aromatic group is close to gasoline and higher than bifunctional solvent. There were several other processes with lower aliphatic groups and higher aromatic groups of bifunctional solvent and close to gasoline groups, which occurred in the 50-minute process at R3.33, 30-minute and 70-minute processes at R6.66, and 30, 50 and 70-minute processes at R15.

Item Type:	Thesis (Doctoral)
Uncontrolled Keywords:	DCL, Natural Zeolite, Swelling Solvent, dealumination, desilication, hierarchical zolite synthesis.
Subjects:	T Technology > TP Chemical technology > TP155-156 Chemical engineering > TP155.5P4 Chemical plants--Design and construction
Divisions:	03-Faculty of Engineering > 21001-Engineering Science (S3)
Depositing User:	Ambo Intang
Date Deposited:	05 Sep 2024 02:00
Last Modified:	05 Sep 2024 02:00
URI:	http://repository.unsri.ac.id/id/eprint/156769

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