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All Journal Swara Patra : Majalah Ilmiah PPSDM Migas Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
A.S. Nasution
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Mechanical Engineering

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PROSES REFORMASI KATALITIK A.S. Nasution; Oberlin Sidjabat; Abdul Haris; Morina Morina
Swara Patra Vol 1 No 2 (2011): Swara Patra
Publisher : Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Proses separasi minyak bumi adalah proses pertama untuk pemisahan minyak bumi menjadi fraksi-fraksinya. Proses ini meliputi proses distilasi atmosfer dan distilasi vakum, yang menghasilkan nafta, kerosin, distilat vakum dan residu (residu atmosferik dan residu vakum).Dalam rangka meningkatkan nilai tambah fraksi minyak bumi tersebut, maka dilakukan proses tahap kedua, yaitu: konversi, baik berupa proses termal maupun proses katalitik. Bensin mempunyai kisaran titik didih dari 40oC sampai 220oC yang mengandung grup hidrokarbon parafin, olefin, naftena, dan aromatik dengan variasi nilai angka oktananya cukup besar
CURRENT USES AND FUTURE CHALLENGES FOR ZEOLITE IN THE INDONESIAN OIL AND GAS PROCESSING INDUSTRY A.S. Nasution; Chairil Anwar; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 22 No. 2 (1999): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.22.2.120

Abstract

Oil and gas industry uses zeolite as an adsorbent to reduce moisture content of natural gas in LNG Plant, and as catalyst to convert the heavy petroleum fractions feeds into light clean fuels in refinery. Low quality crude oil, low residual fuel demand, and an increased demands and spesifications for light products (gasoline, kerosene, and diesel oil) and petrochemical products, future challenges for utilization zeolite as cracking catalyst in refinery are encouraging.
HYDROCRAKING OF HEAVY DISTILLATE INTO CLEAN DIESEL OIL USING Ni-Mo/Al2O3 CATALYST A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 23 No. 1 (2000): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.23.1.123

Abstract

Diesel oil is high pollution fuel and the quality of this fuel must he improved to obtain clean diesel oil Crude oil production and its quality tend to decrease. Light fuel oil demand rate is higher than that of residual fuel. Diesel oil produced in the refineries generally consists of predominantly straight-run diesel oil: however, compounds such as thermally and catalytically cracked diesel oils are sometimes included. The quality of straight-run diesel oil, such as hydrocarbon types and sulfur content, will in general reflect the nature of crude oil. Cracked stocks either thermal or catalytic cracked diesel oils, contain higher percentage of aromatic, olefin and sulfur contents and these cracked diesel products must be hydrogenated prior to rounting to final products. The passage of the Clean Air Act Amendment of 1990 in the U.S.A has forced American refineries to install new facilities to comply with stricter specifications for fuels such as gasoline and diesel oil. Hydrocracking processes are a combination of desulfurization and conversion developed primary to process feeds having a high content of unsaturated hydrocarbons (olefin and polycyclic aromatics) and non-hydrocarbon compounds (sulfur and nitrogen compounds) with a bifunctional catalyst. A variety of bifunctional catalysts and processing designs may be used commercially depending on the feedstock used and desired products. Influence of both feedstock compositions (paraffinic and non-paraffinic vacuum distillate, and wax) and the acidity of bifunctional catalysts on the performance of hydrocracked diesel oil products are discussed briefly in this paper. Low yield or selectivity of diesel oil products by high catalyst acidity, it is suggested that the higher secondary splitting has taken place in converting cracked products into large amounts of low-molecular weight hydrocarbons such as gasoline and LPG. High diesel index product of the paraffinic feedstock due to the high paraffin content of the produced diesel oil.
INFLUENCE OF POISON COMPOUNDS UPON THE ACTIVITY OF MONO AND BE-METALLIC REFORMER CATALYSTS A.S. Nasution
Scientific Contributions Oil and Gas Vol. 6 No. 1 (1983): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.6.1.155

Abstract

Caelyie neforming proces ses a bunctional catals. Annperimen ha been carried ourt study he inluence of phur, nangen, oxygeneand lead com pound upon ihe activity of the metal sine of muno and beetale refarmer curalys ing Adrogenation of benone continous cetates anit.
HYDROCRACKING OF VACUUM DISTILLATE AND LUBRICANT BASE STOCK PRODUCTION A.S. Nasution
Scientific Contributions Oil and Gas Vol. 7 No. 1 (1984): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.7.1.158

Abstract

Hydrocracking of vacuum distillate for middle distillate and lubricant base stock production has been carried out with temperature (from 400° to 420°). Hourly Liquid Space Velocity (from 0.422 to 0.88), Pressure (100 kg/cm2) and H2/Hydrocarbon ratio (1000 It/lt), by using a Catatest unit apparatus.
PRODUCTION OF GASOLINE COMPONENTS IN ASEAN REFINERIES AND EFFECTS OF THE STRICTER FUEL QUALITY REQUIREMENT A.S. Nasution; E. Jasjfi; Evita H. Legowo
Scientific Contributions Oil and Gas Vol. 25 No. 3 (2002): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.25.3.159

Abstract

Intensive implementation of the blue sky program in many countries imposed the use of reformulated gasoline with a very sophisticated specification. Motor gasoline is essentially a complex mixture of hydrocarbons distilled between 40 and 220 C, which consist of distillate fraction of crude oils and the conversion products of crude oil fractions. Small amounts of additives are also used to enhance various aspects of the performance of gasoline. In ASEAN refineries, over 740 MBPSD of feed- stock is processed which produce about 512 MBPSD of gasoline components. About 96 percent of the amount is processed in 39 units of the heterogeneous catalytic processes: i.e. cracking. reforming and isomerization, and the other 4 percent in 4 units of homogeneous catalytic processes: L.e. alkylation and polymerization. Volatility, octane number, hydroegtys4 com: position and impurity content are the most determinant criteria of the gasoline. In most spark-ignition internal combustion engines, the fuel is metered in liquid form through the carburettor or fuel injector, and is mixed with air and partially vaporized before entering the cylinders of the engine. Consequently. volatility, is and extremely important characteristic with respect to starting, driveability, vapor lock, dilution of engine oil fuel economy, and carburettor icing. To increase the octane level of gasoline an anti knock agent such as tetraethyl lead (TEL) or tetramethyl lead (TML) can also be used. Pres- sures to reduce atmospheric pollution are tending towards the reduction or elimination of lead from gasoline. Lead itself is known to be a poison and its presence in the exhaust gas is undesirable. Leudacts as a catalyst poison of catalytic converter installed to reduce carbon monaxide and hydrocarbon emission. Methyl tertiary butyl ether (MTBE) is one of the alternative to replace lead alkyls, and has been used as antiknock. Unleaded gasoline (ULG) has been introduced since 1990 in ASEAN Countries: The actual penetration of ULG utilization in the first half of 1998 are as follows : Brunei Darussalam 48.9 , Indonesia 0.6 %. Malaysia 80 %, Philippines 17.7 %, Singapore 81 %. and Thailand 100%. The passage of the Clean Air Act Amendment of 1990 in the USA has forced American refiners to install new facilities to comply with stricter specifications for fuels such as gasoline and diesel oil. Various terms in the models address quality of the gasoline blended, sulfur content, and total aromatics and olefins contents, RVP, the Tof distillation range, sulfur content, and oxygenated content. Specifications for the reformulated gasoline and the ASEAN commecial gasoline are presented. Driveability index (DI) has been standardized by ASTM D-4814-98a and in the near future this DI could be recommended in the specification for the reformulated gasoline. Reformu- lated gasoline can be blended from the high quality gasoline components. Volatitity (RVP. T T T and driveability index), octane number (RON, MON and octane distribution), and hydrocarbon compositions of the gasoline components, as well as the refinery configuration to improve the quality of the gasoline components, and the compositions of these improved gasoline components of reformulated gasoline production are briefly discussed in this paper.
DEHYDROCYCLIZATION OF NORMAL HEPTANE TO TOLUENE USING BI-METALLIC REFORMING CATALYSTS A.S. Nasution A.S. Nasution
Scientific Contributions Oil and Gas Vol. 7 No. 2 (1984): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.7.2.162

Abstract

Dehydrocyclization of n-heptane and the influence of benzene on this reaction has been carried out with bi-metallic reforming catalyst at the operating temperature : (from 450° to 490C), pressure (from 10 to 30 kg/cm), H/lydrocarbon (from 4 to 12 mole/mote) by using a Catatest unit apparatur.
CONVERSION OF NORMAL HEXANE AND METHYLCYCLOPENTANE INTO BENZENE BY USING REFORMING CATALYST A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 8 No. 1 (1985): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.8.1.170

Abstract

As the significant amount of paraffins and naphthenes in the reforming feedstock, the conversion of these hydrocarbons to aromatic in the catalytic reforming process thus plays an important role. An experiment has been carried out to study the reaction rate of normal hexane and methylcyclopentane into benzene by using reforming catalyst
ZEOLIT CRACKING CATALYST A.S. Nasution; E. Jasjfi; Evita H. Legowo
Scientific Contributions Oil and Gas Vol. 26 No. 1 (2003): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.26.1.187

Abstract

Nowadays, refiners are facing a continuing need to add bottom processing by catalytic process (catalytic cracking and hydro cracking processes) capacity a result of gradually deteriorating crude oil quality and flat-to-declining for residualfuel oil.
INFLUENCE OF THE PARTICLE SIZE OF CATALYST ON THE HYDROCRACKING OF VACUUM DISTILLATE INTO MIDDLE DISTILLATE AND LUBRICANT BASE STOCK A.S. Nasution
Scientific Contributions Oil and Gas Vol. 8 No. 2 (1985): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.8.2.195

Abstract

In order to obtain more data on the hydrocracking catalysts, an experiment has been carried out to study the hydrocracking of vacuum distillate into middle distillate with operating conditions: temperature: From 390 to 420°C: LHSV: from 0.45 to 0.90; presRure: 125 kg/cm and HHC ratio: 1000 It/lt by using Two Ni-Mo/Al 03 SIO, catalysts with various particle stzes using a Catatest unit operated in a continuous sys- tem. Gas product sample was analyzed by using a gas-liquid chromatography, The liquid product were fractionated and bottom products were dewaxed by solvent dewaxing. Based on the experimental data show that : By increasing the operating temperature, LHSV, and decreasing of the particle size of the Ni-Mo/Al0Si0, cutalyst, the conversion rate, the quality of the middle distillate, and the lubricant base stocks products in - crease, but the selectivity of these products will decrease. At operating conditions T= 400°C, P-125 kg/cm; LHSV = 0.45; and H/HC ratio : 1000 It/lt, the conversion rate, smoke point of kerosene, diesel index of gas oll, viscosity index of lubricant base stock decrease from: 54.08 to 50.08% by weight; from 22 to 16 mm, from 62.0 to 57.7 and from 133 to 118 for the low particle size and high particle size of the Ni-Mo/Al 0rSiO, catalysts respectively. The apparent activation energy of vacuum distillate is obtained 28,717 and 23,720 kcal/mol for the low par ticle size and the high particle size of the Ni-Mo/Al-0SIO2 catalyst respectively.
Co-Authors Abdul Gafar Abdul Haris Chairil Anwar E. Jasjfi Evita H Legowo Evita H. Legowo Morina Morina Morina Oberlin Sidjabat Rasdinal Ibrahim