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Jurnal Energi dan Lingkungan (Enerlink)
ISSN : 02169541     EISSN : -     DOI : -
Core Subject : Science,
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 12 Documents
Search results for , issue "Vol 5, No 2 (2009)" : 12 Documents clear
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 : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.866 KB) | DOI: 10.29122/elk.v5i2.1569

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 : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.775 KB) | DOI: 10.29122/elk.v5i2.1570

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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