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Hartiniati Hartiniati
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HYDROTREATMENT KATALITIK MINYAK RINGAN DENGAN KATALIS NiMo DAN PENGARUH SPESIES NITROGEN Sri Djangkung Sumbogo Murti; Hartiniati Hartiniati; Agustina Eliyanti
Jurnal Energi dan Lingkungan (Enerlink) Vol. 6 No. 2 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v6i2.1558

Abstract

Gas Oil fraction of petroleum was hydrotreated (hydrodesulfurization, HDS) overNiMo/Al2O3 catalyst in a 100 ml autoclave reactor. The reaction was conducted at340 oC under 5MPa H2 pressure for 60 min. to investigate the correlation ofnitrogen species in the HDS. The inhibition effects of these species are alsoinvestigated by using original and its N-free gas oil. Hydrogen renewal betweenstages was attempted to reveal an additional effect of the by-products such asH2S. All species in the gas oils were analyzed by GC-AED before and afterhydrotreatment. HDS over NiMo/Al2O3 was largely improved by removal ofnitrogen species. Refractory sulfur species were effectively removed by theremoval of nitrogen species and renewal of hydrogen in staged HDS, showingsynergy effects due to simultaneous removal of two inhibitors.Kata kunci: gas oil, hydrodesulfurization, nitrogen inhibition, GC-AED
PENCAIRAN BATUBARA LIGNIT DAN SUBBITUMINOUS DENGAN DUA SISTEM REAKTAN BERBEDA TANPA KATALIS DAN PELARUT Yuli Artanto; Hartiniati Hartiniati
Jurnal Energi dan Lingkungan (Enerlink) Vol. 5 No. 2 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v5i2.1568

Abstract

This study of coal liquefaction in the absence of catalyst and solvent wasconducted. In this research a comparison of two different coals was carried out tosee characteristic of each coal on the liquefaction reaction. The effect ofhydrogen and CO/H2O were also checked to understand the mechanism of theprocess. Lignite or brown coal from Tanjung Enim and sub bituminous coal fromEast Kalimantan are used in this study. The results suggest that increase in coalrank from lignite to sub bituminous did not alter the conversion significantly.Surprisingly, the reduction in conversion of sub bituminous coal by its inorganicand mineral content noted for hydrogenation reactions (with added tetralin) is notobserved in CO/H2O reactions. For lignite, there is a tendency for conversion toincrease.Kata kunci: lignit, sub bituminous coal, non solvent hydrogenation
REAKTIFITAS BERBAGAI JENIS PELARUT DARI RESIDU KILANG MINYAK PLAJU PADA PENCAIRAN BATUBARA BANKO TENGAH Hartiniati Hartiniati
Jurnal Energi dan Lingkungan (Enerlink) Vol. 5 No. 1 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v5i1.1575

Abstract

An effect of two different residue for liquefaction of Central Banko coal isdisccused. The residue was obtained from side-stream of refinery plant, whichso-called long residue and short residue solvents. The liquefaction test wascarried out under the reference conditions that have been developed in BPPTcoal liquefaction laboratory, at temperature of 450oC and initial H2 pressure of12MPa for 1 hour. The result shows that the distillate yield, Bottom (BTM) yield,and hydrogen consumption were dependent on the nature of solvent. Shortresidue solvent shown higher reactivity than the long residue. Reaction betweenCentral Banko and Short Residue gave distillate yield higher than the longresidue. Moreover, its BTM yield was also lower than that of long residue solvent.This result confirmed the lower hydrogen consumption for reaction short residueand Central Banko coal compared to that for reaction long residue and CentralBanko. In this study, it also confirmed that the yield of H2O and CO+CO2 weredependent on the material input condition. However, the yield of hydrocarbongases (C1~C4) was mainly affected by de-alkylation in the solvent and coal duringthe reactionKata kunci: residu minyak bumi, proses pencairan batubara, central Banko
UJI PENINGKATAN MUTU BATUBARA PERINGKAT RENDAH SUMATERA SELATAN Hartiniati Hartiniati
Jurnal Energi dan Lingkungan (Enerlink) Vol. 7 No. 1 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v7i1.2729

Abstract

A study of coal upgrading by way of evaporative method using coal from SouthSumatra is conducted. Preliminary inestigation on Upgrading of Brown Coal(UBC) process using Central and South Banko coals suggests that the processcan be applied to both coals (called S-BK and C-BK) without any operationalproblem. It produces high quality-stable coals in the briquette form with a calorificvalue of more than 6,500kcal/kg. Moreover, its spontaneous combustioncharacteristic is also suppressed comparing to that conventional drying method.This is due to the addition of aspal (heavy oil) in the solution of kerosene, wherethe aspal then soaked in the micropore of to prevent reabsorption of water whenput in the air.Kata Kunci: upgrading brown coal, Banko coal, briket batubara, spontaneouscombustion
Co-Authors Agustina Eliyanti Lambok Hlarius Silalahi Masaki Tamura Muhammad Hanif Shunichi Yanai Sri Djangkung Sumbogo Murti Takuo Shigehisa Yuli Artanto