ANALISIS KONSUMSI HIDROGEN PADA PENCAIRAN BATUBARA BANKO TENGAH DAN RESIDU KILANG MINYAK BALIKPAPAN

Hartiniati Hartiniati

Abstract


A series of liquefaction test to understand the effect of initial hydrogen pressure
on the yield structure of Banko coal liquefaction under the presence of catalyst
and short residue solvent was studied. Three sets of initial pressure at 5, 9 and
12MPa were tested under liquefaction condition. The test was carried out in Coal
Liquefaction Laboratory-BPPT, using 1 liter autoclave at temperature of 450oC for
one hour. The results showed that by increasing the initial H2 pressure from
5MPa to 9 and 12MPa would improve the distillate yield for about 8-9wt%dafc.
This was due to the availability of hydrogen gas provided at 5MPa was smaller
than 9MPa and 12MPa, so that the molecular hydrogen transformed into proton
hydrogen and involved in stabilizing decomposed coal structure and short
residue became larger. It was found that the changes of H2O, CO+CO2 and of
C1~C4 yields were independent to the variable of initial hydrogen pressure. These
results possibly confirm that H2O and CO+CO2 yield depend on the raw coal
quality input. It was also found that at higher initial pressure (>9MPa), the
hydrogen consumption was become less. This may confirm that hydrogen donor
availability of short residue at higher pressure plays a good role in the reaction so
that less amount of hydrogen from the gas is required for the liquefaction
reaction.
Kata kunci: hydrogen-donor, catalyst, liquefaction yield


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DOI: http://dx.doi.org/10.29122/elk.v3i2.1546

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