Bambang Suwondo Rahardjo
Pusat Teknologi Pengembangan Sumberdaya Energi BPPT

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KAJIAN TEKNOLOGI DIRECT–PROCESS SINTESA DI–METHYL ETHER(DME) DARI BATUBARA, BIOMASSA DAN GAS ALAM Bambang Suwondo Rahardjo
Jurnal Energi dan Lingkungan (Enerlink) Vol. 7 No. 2 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v7i2.4235

Abstract

Di–Methyl Ether (DME) is the simplest ether compund with chemical formula CH3OCH3or also known as methyl ether or wood ether, whichcan be produced two ways namely direct–process and indirect–process. Direct–process is the process of syngas (H2+CO) formation which can be produced via gasification of coal / biomass or partial oxidation of natural gas,and then synthesized into DME. While the indirect–process is a process that begins with MeOH manufacturing, followed by MeOH dehydration in a separate reactor synthesized into DME. Utilization of energy resources means increased economical value and as an effort to reduce dependence on fosil fuels as well as solves the environmental pollution problems. Until now, most DME is made by indirect–process via the catalytic dehydration of MeOH in the fixed–bed reactor (a simple process and low capital investment) is licensed by Lurgi, Haldor–Topsoe, Mitsubishi Chemical Gas (MGC) and Toyo Engineering Corporation (TEC), while the direct–process technology with the high efficiency proposed by Haldor Topsoe, JFE and Air Products Chemicals Inc. is under development stage in Japan, USA as well as China, and so far not fully yet commercial. This paper will discuss about the technology of DME direct–process synthesis from syngas through coal/biomass gasification or natural gas partial oxidation process as an environmentally friendly alternative fuel. Kata kunci: DME, direct process, batubara, biomasa, gas alam
MODIFIKASI SISTEM OPERASI FIXED–BED GASIFIERSEKAM PADI PT. NATIONAL CHAMPIGNON Bambang Suwondo Rahardjo; Taufik Yuwono; Maria Harsitorukmi
Jurnal Energi dan Lingkungan (Enerlink) Vol. 7 No. 2 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v7i2.4237

Abstract

Installation of O2 and steam injection system inside gasifier can be expected to improve syngas quality, all at once N2 content is decreasing, with the result of H2/CO ratio >1 that will produced liquid product optimally. The mixed air+steam injection by steam valve variation opening of ¼ as well as ½ rotation still being possible gasifier operation at temperature condition higher than 700oC. Mixed air+steam injection showed more easily flameable than air injection only, so this mean H2content in the syngas will be increasing. Kata kunci:modification of systems, fixed bed gasifier, gasification, rice husk, synthetic gas