EFEK INJEKSI UDARA dan STEAM TERHADAP KUALITAS SYNGAS HASIL GASIFIKASI SEKAM PADI MENGGUNAKAN FIXED–BED GASIFIER

Imron Masfuri, Bambang Suwondo Rahardjo

Abstract


Biomass gasification is more benefit compared to direct combustion because of
more flexibility gas product that can be directed use as combusted gas in gas
engine power generation or chemical feedstocks as well as synthetic fuel
belongs to added market value. Since 2007, PT National Champignon (PT
Natcham) 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 for
it’s mushroom plant electricity needs through gas engine 400 kW. Fluctuation of
gasifictaion temperature in each of gasifier zones is affected by injection
pressures of air+steam, as well as opening valves of air and steam. The optimum
steam injection can only be carried–out at opening valve of steam 50% and air
of 7/19 (volumetric ratio of steam/air = 0.6–0.7) with bottom temperatur of
gasifier, Tbottom = 650oC at pressure condition of 4,5 bar. Syngas with H2/CO
ratio of 1,26– 1,71 have sufficient met the requirements of syngas quality for
synthesis process of Fischer–Tropsch to be processed futhermore for synthetic
fuel producing.
Kata kunci: sekam padi, gasifikasi, gas sintetis, Gas–To–Liquid, Fischer–
Tropsch


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DOI: http://dx.doi.org/10.29122/elk.v5i2.1571

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