Kusuma, Timotius Candra and Hudandini, Meditha (2019) Pra Desain Pabrik Pembangkit Energi Berbahan Bakar Bagasse. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Bagasse adalah suatu residu dari proses penggilingan tanaman tebu (Saccharum oficinarum) setelah diekstrak atau dikeluarkan niranya sehingga diperoleh produk limbah berserat. Pabrik gula (PG) dapat memperolah ampas hingga 30% dari kapasitas tebu yang diproses. Bagasse biasanya kurang dimanfaatkan secara maksimal. Bagasse merupakkan biomassa yang mempunyai potensi pemanfaatan yag besar untuk dikonversi menjadi energi sehingga industri gula mampu menjadi industri yang memasok energinya sendiri (self-sufficiency energy). Bagasse merupakkan sumber energi yang terbarukan dan tersedia cukup besar. Pemanfaatan energi di pabrik gula dapat berlangsung efisien melalui sistem pembangkit ganda (cogeneration). Dimana dapat dihasilkannya listrik dari uap yag diproduksi dari ketel pembakaran bagasse sebagai penggerak steam turbine. Proses pembangkit energi pada pabrik ini merupakan closed loop dan mengacu pada sikulas rankine melalui tahap: reduksi ukuran bagasse, pengeringan bagasse, serta pembakaran bagasse menggunakkan circulating fluidized bed combuster (CFBC). Panas yang dihasilkan dari pembakaran bagasse dimanfaatkan untuk memanaskan boiler feed water yang kemudian steam akan mengalir ke steam turbine generator (STG) untuk menghasilkan listrik dan waste steam yang akan dialirkan ke pabrik gula saat on season. Pabrik energi dari bagasse ini akan dibangun di Kabupaten Mojoketro, Provinsi Jawa Timur dengan pertimbangan dekat dengan sumber bahan baku yang diambil dari PG Gempolkerep. Pabrik direncanakan memiliki kapasitas 75.000 ton (on season) dan 25.000 ton (off season). Sehingga dapat memproduksi listrik sebanyak 26,57 MW (on season) dan 8,39 MW (off season). Serta saturated steam (2,5 bar) sejumlah 170.000 ton steam saat on season untuk memenuhi kebutuhan PG. Pendirian pabrik ini menggunakan dana invetasi yang berasal dari modal sendiri sebesar 30% dan modal pinjaman sebesar 70% dari biaya investasi dengan bunga 11,38%. Dari analisa ekonomi, didapatkan hasil investasi sebesar dengan IRR 20,83%, POT 5,09, BEP 28%, dan NPV 25 tahun sebesar Rp 514.306.345.638.
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Bagasse is a residue from the milling process of sugarcane (Saccharum oficinarum) after extracting it or removing it from the juice so that fibrous waste products are obtained. Sugar mills (PG) can obtain pulp up to 30% of the capacity of processed sugar cane. Bagasse is usually not fully utilized. Bagasse is a biomass that has the potential to use large quantities to be converted into energy so that the sugar industry is able to become an industry that supplies its own energy (self-sufficiency energy). Bagasse is a renewable and available energy source that is quite large. Energy use in sugar mills can take place efficiently through a cogeneration system. Where electricity can be produced from steam which is produced from the boiler burning bagasse as a driver of steam turbine. The process of energy generation in this factory is a closed loop and refers to sikulas rankine through stages: bagasse reduction, bagasse drying, and bagasse combustion using circulating fluidized bed combuster (CFBC). The heat generated from bagasse combustion is used to heat the boiler feed water, then steam will flow to the steam turbine generator (STG) to produce electricity and waste steam which will be channeled to the sugar factory on season. The energy plant from Bagasse will be built in Mojoketro Regency, East Java Province with consideration of being close to the source of raw materials taken from PG Gempolkerep. The plant is planned to have a capacity of 75,000 tons (on season) and 25,000 tons (off season). So that it can produce electricity as much as 26.57 MW (on season) and 8.39 MW (off season). As well as saturated steam (2.5 bar) of 170,000 tons of steam when on season to meet PG's needs. The establishment of this factory uses investment funds originating from its own capital of 30% and loan capital of 70% of the investment costs with an interest of 11.38%. From economic analysis, the investment results obtained by IRR 20.83%, POT 5.09, BEP 28%, and NPV 25 years amounting to Rp 514,306,345,638.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSK 662.88 Kus p-1 2019 |
| Uncontrolled Keywords: | Bagasse, CFBC, siklus rankine. |
| Subjects: | T Technology > TP Chemical technology > TP248.3 Biochemical engineering. Bioprocess engineering T Technology > TP Chemical technology > TP339 Ethanol as fuel. Biomass energy. |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | Meditha Hudandini |
| Date Deposited: | 13 Jun 2023 07:25 |
| Last Modified: | 13 Jun 2023 07:25 |
| URI: | http://repository.its.ac.id/id/eprint/64757 |
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