Pengaruh Kecepatan Udara Terhadap Performa Crassdraft Gasifier Dengan Bahan Bakar Serutan Kayu Jati

Fossil fuels are natural resources that are not renewable, to cope with future energy crisis several alternative sources of energy sources started to be developed one biomass energy. Biomass in energy production industry, refers to biological material living or recently dead that can be used as fuel or for industrial production Gasification is a process that uses heat to transform solid biomass or solid carbonaceous other into synthetic gas such as natural gas that has been burned, through our usual gasification change almost all of the solid organic materials into clean fuel gas. In this study begins by modifying the airways in the reactor, then the supply of air from the blower speed is varied. Air speed used is 3 m / s, 3.5 m / s and 4 m / s, then measured the combustion temperature and the temperature of boiling water every 1 minute. The results of a comparison study combustion temperature at a speed of 3 m / s, 3.5 m / s, 4 m / s. From the pictures look old flame of the most effective is to use a variation of air velocity of 3 m / s ie for 17 minutes, the speed of 3.5 m / s for 15 minutes, and a speed of 4 m / s for 14 minutes. Combustion temperatures highest in the experiment using a speed of 3 m / s, in the 7th minute, with the temperature 700.66 ℃, to the speed of 3.5 m / s in the 7th minute of 718.33 ℃, and at a speed of 4 m / s on a minute -4 amounted to 644.16 ℃. From a comparison between the temperature of combustion speed of 3 m / s, 3.5 m / s and 4 m / s indicates the lowest speed will produce effective flame longer, while using the air velocity will be obtained most large combustion temperature. This happens as long as the stoichiometric limits of course

Studi Eksperimen Gasifikasi Pada Reaktor Fluidized Bed Dengan Bahan Bakar Ampas Tebu

Abstract The aims of the research is to determine the effect of fuel particle size on the performance of fluidized bed reactor. The research was permormed on reactor with a diameter of 454.38 mm and 908.5 mm combustion chamber high. The study used bagasse fuel with the variation of size 1.54 mm, 1.08mm, 0.708 mm and particles bed is silica sand used with the size of 0.54 mm. The combustion process for a once use 10 kg silica sand, chalk 1 kg, and bagasse 5 kg. The data are taken contained of the minimum speed of fluidization, reactor temperature, time of reaction, the length of time to boil the water by as much as 2 liters. The examination showed that the size of the fuel affects the speed of minimum fluidization. The average reactor temperature high of 207 (ºc). Fastest time to boil water as much as 2 liters is 33 minutes. on an examination by using bagasse size 1.54 mm. Greatest amount of heat is generated that is 2051.765 kJ conducted on the examination using bagasse fuel size 0.708 mm. Fastest time of reaction is 45 minute conducted on the examination by using a variation bagasse size of 1.54 m

Studi Eksperimen Gasifikasi Menggunakan Fluidized Bed Gasifier Berbahan Bakar Sekam Padi, Serbuk Gergaji Kayu Jati Dan Serbuk Gergaji Kayu Sengon Penghasil Syngas

Di Indonesia yang hampir sebagian besar wilayahnya merupakan sektor pertanian mempunyai potensi akan biomassa yang sangat melimpah salah satunya adalah sekam padi, serbuk gergaji kayu dari kayu seperti kayu jati dan sengon pemanfaatan bahan sisa produksi tersebut belum maksimal salah satu cara pemanfaatan yang bisa dilakukan dengan proses gasifikasi menggunakan fluidized bed gasifier sebagai sumber energi berkelanjutan bagi Indonesia. Pengujian ini dimulai dengan memasukkan 10 kg pasir silika ukuran 40 mesh dan bahan bakar biomassa 5 kg yang mengalami reaksi oksidasi parsial dengan udara, oksigen, atau campurannya. Reaksi heterogen antara gas dan padatan di dalam reaktor gasifier. Reaktor Fluidized bed tersusun oleh padatan terfluidisasi sehingga padatan bergerak seiring dengan gerakan fluida. Penelitian ini bertujuan untuk mengetahui performance gasifikasi dengan metode fluidized bed gasifier. Dari penelitian yang dilakukan jenis bahan bakar berpengaruh terhadap temperatur reaktor, temperatur pembakaran, waktu lama pendidihan air, nyala efektif dan efisiensi thermal. Didapatkan Kalor sensible pada sekam padi sebesar 603,718 Kj. Bahan bakar serbuk gergaji kayu sengon campuran sekam padi 603,676 Kj dan bahan bakar serbuk gergaji kayu jati campuran sekam padi 603,670 Kj dan Kalor laten pada bahan bakar sekam padi sebesar 975,74 Kj, bahan bakar serbuk kayu sengon campuran sekam padi sebesar 627,61 Kj dan bahan bakar serbuk gergaji kayu jati campuran sekam padi sebesar 394,63 Kj. Sedangkan untuk temperatur tertinggi pada percobaan ini yaitu pada serbuk kayu sengon campuran sekam padi sebesar 337°C. Sedangkan bahan bakar sekam padi campuran serbuk gergaji kayu jati memiliki temperatur rata-rata tertinggi 306°C dan sekam padi mencapai rata-rata tertinggi 296°C. Bahan bakar sekam padi memiliki nyala efektif 90 menit, bahan bakar serbuk kayu jati campuran sekam padi 88 menit dan serbuk kayu sengon campuran sekam padi memiliki lama nyala efektif 68 menit