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Lambok Hilarius Silalahi


A liquefaction process of heavy residue and South Banko coal so-called coprocessing
in order to optimize the optimum weight ratio vacuum residue (VR) to
coal is studied. Vacuum residue is co-processed with and without coal in
catalyzed reaction (ï§-FeOOH catalyst added with sulfur) at 450oC and 8MPa
(initial cold-H2 pressure) for 1 hour. All the co-processing reactions are carried
out in 5 liter stirred-batch autoclave. It is found that the co-processing produces
higher distillates and lower residue compared with using creosote oil. Upgrading
of vacuum residue without coal has shown that the reactivity of vacuum residue
to stimulate the distillate production. It was confirmed that there is a synergistic
effect between heavy vacuum residue and South Banko coal. It may come from
free radical of coal fragments that possibly weak or cracking the macro-molecular
structure of heavy vacuum oil. A set of heavy vacuum residue to South Banko
coal weight-ratio is tested at 2.0, 2.5 and 3.0 for determining the effect of ratio on
yield structure of the process. The distillate yield for ratio of 2.0 is higher than
other ratios. On the contrary the amount of residue produced is decreased. There
is no significant changed on the hydrocarbon gases (C1-C4) yield when the ratio
is increased from 2.0 to 2.5. A slightly decreased of C1-C4 Perolehan is observed
when the ratio was increased to 3.0. The effect of changing ratio is not found on
the (CO+CO2) gas yield due to very small amount of oxygen content in the
vacuum residue.
Kata kunci: heavy vacuum residue, co-processing, south banko coal

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How to Cite
Silalahi, L. H. (2009). OPTIMASI CO-PROCESSING DENGAN PENGATURAN RASIO PELARUT DAN BATUBARA: Studi Batubara Banko Selatan. Jurnal Energi Dan Lingkungan (Enerlink), 5(2). https://doi.org/10.29122/elk.v5i2.1569