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Murti, Sri Djangkung Sumbogo
Jurnal Energi dan Lingkungan (Enerlink)
Energy

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PROSES KATALITIK DISTILAT MINYAK BATUBARA BANKO SELATAN DENGAN HYDROTREATMENT SATU TAHAP DAN DUA TAHAP Murti, Sri Djangkung Sumbogo
Jurnal Energi dan Lingkungan (Enerlink) Vol 4, No 1 (2008)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Catalytic hydrotreatment of South Banko coal liquid (SBCL) distillates wasstudied through single and two-stage hydrotreatment over a commercialNiMo/Al2O3 catalyst. The hydrotreatment was conducted in an autoclave of 50 mlcapacity under the conditions of 360 – 450 oC and 30 – 120 min at initialhydrogen pressure of 10 MPa. The hydrotreatment reduced the contents of allhetero-atom species (S, N and O). sulfur species were easiest to be removedeven at low temperature of 360 oC. In contrast nitrogen species were mostrefractory. The higher temperature and more amount of catalyst enhanced thedenitrogenation reaction. The two-stage hydrotreatment was more effective forthe denitrogenation and deoxygenation because of the fresh hydrogen in thesecond stage and the combination of lower and higher reaction temperature ateach stage.Kata kunci: hydrotreatment katalitik, heteroatom, single and two stagehydrotreatment, katalis, desulfurisasi, denitrogenasi,deoksigenasi, GC-AED
HYDROTREATMENT KATALITIK MINYAK RINGAN DENGAN KATALIS NiMo DAN PENGARUH SPESIES NITROGEN Murti, Sri Djangkung Sumbogo; Hartiniati, Hartiniati; Eliyanti, Agustina
Jurnal Energi dan Lingkungan (Enerlink) Vol 6, No 2 (2010)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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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
PENGARUH SENYAWA NITROGEN PADA DESULFURISASI MINYAK DIESEL DENGAN KATALIS NIMO/AL2O3 DAN COMO/AL2O3 Murti, Sri Djangkung Sumbogo; Faizal, Muhammad
Jurnal Energi dan Lingkungan (Enerlink) Vol 3, No 1 (2007)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Inhibiting effect of nitrogen compounds in petroleum diesel (gas oil) on theperformance of the catalyst NiMo/Al2O3 and CoMo/Al2O3 uponhydrodesulfurization (HDS) has been investigated using an autoclave reactor.Operating conditions used was 340oC temperature and initial pressure 50 kg/cm2H2. Oil sample used was diesel oil and diesel oil-free nitrogen. Stages of thereaction between hydrogen replacement is intended to find out more about otherinhibiting effects derived from byproducts such as H2S and NH3. The entirecompound in diesel oil was analyzed by GC-AED before and afterhydrotreatment. Catalysts NiMo/Al2O3 and CoMo/Al2O3 showed different activityin HDS and the effect of nitrogen compounds. In principle, the HDS to type withhighly reactive sulfur / reactive will be more resistant to inhibiting properties ofnitrogen than sulfur compounds are hard to react (refractory). In contrast, forcatalysts showed como real effect of nitrogen compounds. One of refractorycompounds are 4,6-dibenzothiophene (4,6-DMDBT), can effectivelyhydrogenated by the removal of hydrogen compounds and renewal nitrogen onthe HDS. This result shows the synergistic effect due to dischargesimultaneously both types of block. Furthermore, in brief reactive nitrogencompounds in the HDS also discussed in this paper.Kata kunci: hydrodesulfurisasi, hambatan senyawa nitrogen, katalisNiMo/Al2O3, CoMo/Al2O3, GC-AED
KARAKTERISASI SECARA RINCI SENYAWA HETEROATOM DALAM FRAKSI RINGAN MINYAK BATUBARA TANITO HARUM DAN PRODUK MINYAK HASIL HYDROTREATMENT Murti, Sri Djangkung Sumbogo; Silalahi, Lambok Hlarius
Jurnal Energi dan Lingkungan (Enerlink) Vol 3, No 2 (2007)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Heteroatom compounds contained in coal oil Tanito Harum both before and afterhydrotreatment were identified using a gas feed chromatography with atomicemission detector (GC AED). Alkylated dibenzothiophenes benzothiophenes andsulfur compounds were found to be dominant in the original faction, his wholesuccessfully removed through hydrotreatment process on the condition of 350oC,10 MPa, and 60 min. Alkylated anilines, quinoline, indoles, and carbazoles foundin the original oil as nitrogen compounds. Two types of specific nitrogencompounds persist for hydrotreatment process underway and identifiedrespectively as C11H20N and C14H23N, based on the ratio of the element iscalibrated by GC-AED and the molecular weight was measured by GC-MS (massspectrometry). The empirical formula is very similar to such C11H19N andC14H23N, were detected by MS and NMR after concentrated by extraction. Somesulfur compounds present in non-aromatic fraction, while all nitrogen compoundsare completely concentrated in the aromatic fraction after separation byconventional chromatographic columns. There was also alkylated phenols,benzofurans and dibenzofurans were found as typical oxygen compounds in theoil.Kata Kunci: limonite catalyst; coal liquefaction, catalytic hydrotreating, liquefiedcoal oil, gas oil fraction, cetane index, octaen number
UPGRADING KATALITIK DISTILAT MINYAK BATUBARA BANKO SELATAN DENGAN KATALIS NiMo SULFIDA Murti, Sri Djangkung Sumbogo; Hartiniati, Hartiniati
Jurnal Energi dan Lingkungan (Enerlink) Vol 4, No 2 (2008)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Catalytic hydrotreatment of South Banko coal liquid (SBCL) middle distillate (b.p.300 – 420 oC) was performed over NiMo sulfides catalysts. The hydrotreatmentwas conducted in an autoclave of 50 ml capacity under the conditions of 340 –420 oC, 60 and 120 min and initial hydrogen pressure of 5 – 10 MPa. Thehydrotreatment reduced the contents of all heteroatom species (S, N and O).Sulfur species were easiest to be removed, while nitrogen species were mostrefractory. Reactivities of some representative heteroatom species weremeasured to find the refractory species in coal liquid by GC-AED. Carbonsupported catalyst was compared to alumina supported one confirming its higheractivity for hydrodesulfurization, hydrodenitrogenation and hydrodeoxygenation.Kata kunci: coal liquid, middle distillate, Katalis NiMo, hydrotreatment,heteroatom, GC-AED, hidrodesulfurisasi, hidrodeoksigenasi,hidrodenitrogenasi
MOLECULAR COMPOSITION OF COAL LIQUID OIL CHARACTERIZED BY GAS CHROMATOGRAPHY WITH ATOMIC EMMISION DETECTOR Yusnitati, Yusnitati; Murti, Sri Djangkung Sumbogo
Jurnal Energi dan Lingkungan (Enerlink) Vol 6, No 1 (2010)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Heteroatom-containing species in the coal liquid oils (CLO) were identified andquantified by the aid of gas chromatography with atomic emission detector (GCAED).Four different CLOs from different rank coals, processes and cut pointswere investigated in the present study. Thiophene and its derivatives werefound to be the major sulfur compounds, pyridines and anilines, and phenolswere the major nitrogen and oxygen compounds, respectively in the oils ofboiling range < 300 ℃. An oil of boiling range (300 – 420℃) carried moredimethyldibenzothiophenes and benzoquinolines. The correlation between feedcoal and liquid product was discussed in terms of the compositions ofheteroatomic compounds.Kata kunci: coal liquid oil, heteroatomic compounds, GC-AED
DISTRIBUSI MOLEKULER SPESIES HETEROATOM DALAM MINYAK BATUBARA INDONESIA Murti, Sri Djangkung Sumbogo; Yusnitati, Yusnitati
Jurnal Energi dan Lingkungan (Enerlink) Vol 6, No 2 (2010)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.623 KB)

Abstract

Heteroatom-containing species in the coal liquid oils (CLO) were identified andquantified by the aid of gas chromatography with atomic emission detector (GCAED).Four different CLOs from different rank coals, processes and cut pointswere investigated in the present study. Thiophene and its derivatives were foundto be the major sulfur compounds, pyridines and anilines, and phenols were themajor nitrogen and oxygen compounds, respectively in the oils of boiling range<300oC). An oil of boiling range (300–420oC) carried moredimethyldibenzothiophenes and benzoquinolines. The correlation between feedcoal and liquid product was discussed in terms of the compositions ofheteroatomic compounds.Kata kunci: coal liquid oil, heteroatomic compounds, GC-AED
Co-Authors Eliyanti, Agustina Hartiniati Hartiniati Muhammad Faizal Silalahi, Lambok Hlarius Yusnitati Yusnitati