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All Journal Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
E. Jasjfi
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science

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5th ANNUAL ASCOPE LABORATORY TEST CORRELATION PROGAMME ON CFR ENGINE (1983) Bustani Mustafa; E. Jasjfi
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.8.2.200

Abstract

A high precision CFR Engine Laboratory operating according to standard requirement is a must in the oil industry, It is also of very high importance within work of research activities on the use of hydrocarbon fuels. In ASEAN we have the ASCOPE correlation program on CFR engine laboratory to obtain precinion data in the gusoline by CFR test research method. Member countries taking part in the 5 laboratory test correlation program for CFR engines are Indonesia as coordinator with six participating laboratories, Malaysia, Philippines, Singupore and Thailand with two laboratories each and USA with are laboratory. The 5th correlation program was started by sending sample by the program correlation in Jamuary, 1983 after being tested the participating laboratories, the test renilt were sent to the program coordinator who procured the result for the determination of standard deviation according to precision and statistics. Based on result, conclusion can be drawn about the deviation of laboratory test results.
GASOLINE SPECIFICATIONS IN THE ASEAN COUNTRIES E. Jasjfi
Scientific Contributions Oil and Gas Vol. 9 No. 1 (1986): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.9.1.204

Abstract

asoline is one of the most important petroleum products which is directly used by a large section of the general public. Countries of the Southeast Asia have been cooperating closely in many fields, including the petroleum industry. In view of the facts, it would be of prime interest to examine and compare the gasoline specifications in the ASEAN countries. This paper presents the results of the study, based on the official standard specifications in force in five ASEAN countries. The similarities and differences are emphasized, as well as their significance.
CARBON DIOXIDE ADSORPTION CAPACITY OF INDONEIAN NATURAL ZEOLITE E. Jasjfi; Edi Janis
Scientific Contributions Oil and Gas Vol. 10 No. 1 (1987): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.10.1.213

Abstract

Natural gas is an important commodity for the economy and development of Indonesia. In addition to its riches in petroleum resources, Indonesia is also endowed with other mineral resources, among which is na- tural zeolite. This paper describes a study made to combine these two resources, the use of zeolite in natural gas processing, specifically for CO, removal by zeolite as solid adsorbent. The experimental results presented in this paper indicate that this Indonesian natural zeolite has good CO, adsorp tion capacity, although the value is only about one half of that obtained from systhetic zeolite. Both zeolites were shown to follow the Langmuir adsorption iso therms and their parameters were established. These and other relevant data are presented in this paper.
THE EFFECTS OF FUSEL OIL BLENDING ON GASOLINE FUEL CHARACTERISTICS E. Jasjfi
Scientific Contributions Oil and Gas Vol. 10 No. 2 (1987): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.10.2.231

Abstract

Fusel oil, which comprises a mixture of kigher alcohols, has prospective potentialirien for use at a conobrent in gasoline-methanol blends since ir can improve their water tolerance, Thie has been demonatrated in an earlier work by the author. The present paper presents the reults of a serier of tests made to investigate the effects of funel oil addition to the actual gasoline fuel characterisies The resules indicated that such addition Could remult in improving the gsoline propertles s can be exemined through comparisom with the established specifications.
Gas Oil Components And The Effects Of The Changing Gas Oil Quality Requirement A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 21 No. 1 (1998): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.21.1.254

Abstract

The survey of gas oil production and impact of more stringent specification on the catalyst performance of ASEAN refineries conducted in 1996 revealed that a total feedstock of 5,673 MBPSD are processed into 1,131 MBPSD gas oil. This consist of the following product distribution: straight-run gas oil 85.44%, thermal cracked gas oil 2.52% cat. Cracked gas oil 3.50% and hydrocracked gas oil 8.54% on total gas oil products. About 50% of this total gas oil is processed in hydrotreating processes to improve the performanceof diesel oil.This paper reviews the production of gas oil components in ASEAN and the effect of the changing gas oil quality requirement on hydrotreating catalyst performance.
Development Of Catalyctic Converter For Unleaded Gosaline Program In Indonesia Oberlin Sidjabat; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 21 No. 1 (1998): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.21.1.256

Abstract

Recent economic development in Indonesia, as in other ASEAN countrie, has resulted in improved prosperity as reflected by the significant increase in the numbers of motor vehicles, particulary in big cities. This growth in car population and traffic is unfortunately accompanied by increase in not only of the country’s energy consumption but also increased air pollution. Almost 70% of atmospheric pollution in big cities is reported to be contributed by motor vehicles.In view of this situation, the Government of Indonesia has launched the “Blue Sky program” and introduced unleaded gasoline. Indonesia manufacturing industries have responded also by designing “nationalautomobiles” to be fabricated in Indonesia, and to run with unleaded gasoline. Some of these vehicles will be equipped with catalytic converters to reduce exhaust gas emissions.In support of this program, LEMIGAS R/D Center for Oil and Gas Technology is developingits-own catalytic converters that can be fitted into these cars. The work carried out toward this end is outlined briefly in this paper
Hydroconversion Of Heavy Distillate Into Lube Base Stock Using Bi-Functional Catalysts A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 21 No. 2 (1998): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.21.2.260

Abstract

Hydroconversion process replaces the furfural stage and dewaxing part of conventional processs of lube base stock production. To study the ability of this hydroconversion process to weed low viscosity index component out of heavy distillate fraction to produce high viscosity index lube base stock, an experiment has been carried out on the hydroconversion of three feedstock types, I,e,: non-paraffinic vacuum distillate (NPVD), paraffinic vacuum distillate (PVD) and paraffin-wax (WAX), using three bifunctional catalysts having low, medium abd high acidities. The experiment was done at the following operating conditions: temperature from 380° to 420°C, pressure: 100 kg/cm² and H₂/HC ratio: 1000 L/L using a Catatest Unit operated in continuous system. The experimental data shows that at 50% by wt. feedstock conversion, the yields and viscosity index of lube base stock product are 20.7% by wt. and 118; 25.5% by wt. and 136; and 29.5% by wt. and 164 for NPVD, PVD and high acidity bifunctional catalysts, respectively. By conventional process, PVD feedstock produces 10-15% by wt. lube base stock with viscosity index lube 90 to 100. The high viscosity index of lube base stock product, obtained by hydroconversion process, suggest that a part of condensed aromatics is converted into naphthenes, which are then selectivity hydrocracked into single alkyl aromatics by both the metal site and acid site of the bifunctional catalysts. With medium and high acidity bifunctional catalysts, isomerization and cyclization of wax feedstock into isoparaffins and single ring alkyl-naphthene ring of vacuum distillate feedstock into single ring alkyl-aromatic is quite dominant with medium acidity catalyst.
DRIVEABILITY INDEX OF COMMERCIAL GASOLINE IN ASEAN COUNTRIES A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 29 No. 3 (2006): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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Abstract

Motor gasoline is essentialy a complex mixtureof hydrocarbons distilling between about 40°C and225°C and consisting of compounds generaly in therange C5 to C12. Small amounts of additives are alsoused to exchange various aspects of the performanceof the fuel.
PRODUCTION OF UNLEADED GASOLINE IN ASEAN COUNTRIES A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol. 29 No. 2 (2006): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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Abstract

Worldwide crude supply is experiencing a mod-est trend towards heavier and high sulfur content.The Middle East, being traditionally the world’s ma-jor oil exporting region, will continue to be the princi-pal supplier of lower quality crude’s in the future1'1.
PRODUCTION OF CLEAN DIESEL OILS A.S. Nasution; E. Jasjfi; Evita H Legowo
Scientific Contributions Oil and Gas Vol. 28 No. 2 (2005): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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Abstract

Cars and fuels have been developed simultaneouslyand nowadays cars deniand a very sophisticated fuelindeed. Environmental restriction and efforts to minimizethe pollution problem by exhaust gases are causing de-sign changes in cars that in turn are having some effectson fuel qualily.
Co-Authors A.S Nasution A.S. Nasution Bustami Mustafa Bustani Mustafa Chairil Anwar E. H. Legowo Edi Janis Evita H Legowo Evita H. Legowo M. Mulyono M. Rahman M. Udiharto Morina Morina Oberlin Sidjabat R. Desrina Rasdinal Ibrahim S. Kadarwati Suprapto Soemardan