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INDONESIA
Jurnal Energi dan Lingkungan (Enerlink)
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : 02169541     EISSN : -     DOI : -
Core Subject : Science,
Energy
Enerlink adalah jurnal yang diterbitkan 2 kali setahun oleh Pusat Teknologi Pengembangan Sumberdaya Energi dan Industri Kimia BPPT di bidang energi dan lingkungan. Enerlink is a scientific journal that publishes twice annually by Centre of Energy Technology and Chemical Industry of BPPT.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue " Vol 5, No 2 (2009)" : 6 Documents clear
EFEK INJEKSI UDARA dan STEAM TERHADAP KUALITAS SYNGAS HASIL GASIFIKASI SEKAM PADI MENGGUNAKAN FIXED–BED GASIFIER Masfuri, Imron; Rahardjo, Bambang Suwondo
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Biomass gasification is more benefit compared to direct combustion because ofmore flexibility gas product that can be directed use as combusted gas in gasengine power generation or chemical feedstocks as well as synthetic fuelbelongs to added market value. Since 2007, PT National Champignon (PTNatcham) in Wonosobo – Central Java have been operating 1 (one) unit of fixed–bed updraft gasifier by rice–husk fuel feeding using air as gasification agent forit’s mushroom plant electricity needs through gas engine 400 kW. Fluctuation ofgasifictaion temperature in each of gasifier zones is affected by injectionpressures of air+steam, as well as opening valves of air and steam. The optimumsteam injection can only be carried–out at opening valve of steam 50% and airof 7/19 (volumetric ratio of steam/air = 0.6–0.7) with bottom temperatur ofgasifier, Tbottom = 650oC at pressure condition of 4,5 bar. Syngas with H2/COratio of 1,26– 1,71 have sufficient met the requirements of syngas quality forsynthesis process of Fischer–Tropsch to be processed futhermore for syntheticfuel producing.Kata kunci: sekam padi, gasifikasi, gas sintetis, Gas–To–Liquid, Fischer–Tropsch
POTENSI PENGHEMATAN ENERGI LISTRIK DI INDUSTRI KARPET Hasan, Achmad
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Potential energy savings is one way to plan for optimizing the supply and use ofenergy needed by the industry. Portrait of the use of electrical energy used incarpet industry supplied from PT.PLN (Persero) with the power contract for 1730kVA through 2 pieces of the transformer with electrical energy consumption by anaverage of 19,979,941 kWh per year. Supplies of gas / diesel fuel oil for boilerfeed of 1.4537 million m3 per year with a calorific value of 6 tons / hour and 900liters of diesel oil per year. Working voltage is still in the allowed range, while forthe voltage unbalance is still low at under 2.5% and total harmonic distortionvoltage is still low at 2% and this can be expressed less well and there are lowpower factor at some expense. In case: PT.Classic Prima Carpet Industries.Kata kunci: energi, listrik, penghematan, filter harmonik, konversi, konservasi
COAL UPGRADING TECHNOLOGY FOR INDONESIAN LIGNITE Silalahi, Lambok Hilarius; Deguchi, Tetsuya; Makino, Eiichiro
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

Langkah strategis untuk promosi aplikasi teknologi upgrading lignit diIndonesia telah menjadi bahasan. Tulisan ini memberian pemikiran danpertimbangan cara-acra proosi teknologi yang sedang dalam proseskomersialisasi. Perubahan secara drastic suplai dan demand energi diselruhdunia telah mendorong Indonesia untuk mengkaji kebijakan berjalan untumengantisipasi perubahan di tahun-tahun mendatang. Salahs atu perubaanyang mendasar adalah meningkatnya demand batubara, selama batubaramasih dinilai sebagai bahanbakar yang paling ekonomis dibandingkan sumberenergy lainya, meskipun harga batubara masih cukup tinggi mengikuti hargabahan bakar minyak. Oleh karena batubara merupakan potensi terbesar didalam negeri, perubahan yang sangat mendasar kebijakan energi, khususnyamenyangkut pendayagunaan batubara peringkat rendah menjadi sangatpenting mengingat hampir 70% dari total cadangan batubara sebesar 57,8miliar ton merupaan batubara peringkat rendah. Indonesia telah menaikkanvolume ekspor batubara per tahun meskipun terjadi krisis ekonomi baru-baruini. Kebutuhan domestik batubara masih bersifat flat disebabkan krisis ekonomi.Diprediksi demand akan meningkat karena subsid bahan bakar minya secarabertahap akan dihapuskan dan batubara merupakan energy alternative.Mengingat situasi tersebut usaha promosi teknologi upgrading batubara sudahseharusnya dipercepat. Untuk itu diperlukan seleksi teknologi yang berpegangefektifitas biaya, ramah lingkungan dan menghasilkan produk batubara dengannilai kalor tinggi dan tidak mudah terbakar. Hasil pengoperasian pilot plant 5ton per hari yang terdapat di Palimanan,Cirebon, Jawa Barat yang merupakanproyek kerjasama Indonesia dengan Jepang, untuk konfirmasi kinerja enjiniringpada proses yang kontinyu juga menjadi topik bahasan dalam tulisan ini.Keywords: coal upgrading technology, upgrading brown coal, pilot plant, lowrank coal, Cirebon
PENCAIRAN BATUBARA LIGNIT DAN SUBBITUMINOUS DENGAN DUA SISTEM REAKTAN BERBEDA TANPA KATALIS DAN PELARUT Artanto, Yuli; Hartiniati, Hartiniati
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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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
OPTIMASI CO-PROCESSING DENGAN PENGATURAN RASIO PELARUT DAN BATUBARA: Studi Batubara Banko Selatan Silalahi, Lambok Hilarius
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

A liquefaction process of heavy residue and South Banko coal so-called coprocessingin order to optimize the optimum weight ratio vacuum residue (VR) tocoal is studied. Vacuum residue is co-processed with and without coal incatalyzed reaction (-FeOOH catalyst added with sulfur) at 450oC and 8MPa(initial cold-H2 pressure) for 1 hour. All the co-processing reactions are carriedout in 5 liter stirred-batch autoclave. It is found that the co-processing produceshigher distillates and lower residue compared with using creosote oil. Upgradingof vacuum residue without coal has shown that the reactivity of vacuum residueto stimulate the distillate production. It was confirmed that there is a synergisticeffect between heavy vacuum residue and South Banko coal. It may come fromfree radical of coal fragments that possibly weak or cracking the macro-molecularstructure of heavy vacuum oil. A set of heavy vacuum residue to South Bankocoal weight-ratio is tested at 2.0, 2.5 and 3.0 for determining the effect of ratio onyield structure of the process. The distillate yield for ratio of 2.0 is higher thanother ratios. On the contrary the amount of residue produced is decreased. Thereis no significant changed on the hydrocarbon gases (C1-C4) yield when the ratiois increased from 2.0 to 2.5. A slightly decreased of C1-C4 Perolehan is observedwhen the ratio was increased to 3.0. The effect of changing ratio is not found onthe (CO+CO2) gas yield due to very small amount of oxygen content in thevacuum residue.Kata kunci: heavy vacuum residue, co-processing, south banko coal
EFEK GAYA ANTAR PARTIKEL DAN DIAMETER PARTIKEL TERHADAP KECEPATAN MINIMUM FLUIDISASI Febijanto, Irhan
Jurnal Energi dan Lingkungan (Enerlink) Vol 5, No 2 (2009)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

In this study, the effect of diameter particle and the effect of inter-particlecohesion force due to liquid bridge formation on the minimum fluidization velocityin the fluidized bed have investigated. Also the effect of inter-particle cohesionforce on a fluidization condition of the bed has observed by video camera. Theinvestigation results showed bigger diameter can give higher minimumfluidization velocity, and stronger inter-particle force can give higher minimumfluidization velocity, and then make a quality of fluidization of bed lower. Usingwith this investigation results, the mechanism of fouling and slaggingphenomena, which are happen in the coal-fired boiler can be explained.Kata kunci: fluidized bed, minimum fluidization velocity, particle diameter,relative humidity, inter-particle cohesion force

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