STUDI EKSPERIMENTAL PEMANFAATAN BATUBARA KUALITAS RENDAH MELALUI PROSES GASIFIKASI UNTUK MENGGERAKKAN MIKRO TURBIN GAS

ZHAFRAN, ELIAN and Vidian, Fajri (2018) STUDI EKSPERIMENTAL PEMANFAATAN BATUBARA KUALITAS RENDAH MELALUI PROSES GASIFIKASI UNTUK MENGGERAKKAN MIKRO TURBIN GAS. Undergraduate thesis, Sriwijaya University.

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Abstract

Coal is one source of energy with substantial reserves, Coal in Indonesia generally are low rank coal that have not been utilized optimally. As for the classification of coal are based on degree and quality of the coal itself, there are Peat with a 1.700-3.000 kcal/kg calorie value, Lignite with a 1.500-4.500 kcal/kg calorie value, Sub-Bituminous with a sub-bituminous calorie value, Bituminous with a 7.000-8.000 kcal/kg bituminous calorie value and Anthracite with a 8.300 kcal/kg equal or greater of anthracite calorie value. Coal utilization which have been very popular nowadays are through the gasification tchnology. Coal gasification technology is a process of coal transforming from a solid fuel to become a gas fuel. The first chain reaction in a gasification process is a drying reaction, pyrolysis, oxidation and reduction. The fuel result from a gasification process could be applied as a gas turbine activator. The utilization of coal gasification through gas turbine system can be applicated on a low power capacity which is called micro gas turbine, basically micro gas turbine has a similar component with general gas turbine which are turbine, combustion chamber and compressor. As for the ways of micro gas turbin work starts from the compressor. Compressor is used to suck the air and increase the pressure, the air from the compressor would go through the combustion chamber followed by the gas fuel itself and the sparks which inflicts the combustion process. The combustion energy would experienced temperature and enthalpy increase in a constant pressure of ideal cycle. The gasification coal gas would gradually applied into the combustion chamber in a micro gas turbine. A gas from combustion process would be expanded into the turbine and rotate the turbine blades, The turbine rotator would rotated which. aims to get the turbine rotation speed as well as power which resulted by the turbine itself. Therefore this research is utilizing the low quality coal through gasification to activate the micro gas turbine. The gas from gasification is distributed into the combustion chamber and the gas would be combusted with greater air supply than compessor with 18,26 kg/h until 34,22 kg/h air speed variation with a 11,539 kg/h constant gas flow rate., with an air and full ratio (A/F) in the amount of 1,582 until 2,965 excess air which used in the combustion in the burner as amount of 52,1% until 185% excess air, resulting 22030 rpm until 25051 rpm turbine rotation and produce turbine power as amount of 759,7 W until 1030 W. There is correlation between air and fuel ratio with produced power, where if the air and fuel ratio (A/F) is higher than the power which is produced would also be higher.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Coal, Gasification, Combustion Chamber, Combustion, Micro Gas Turbine
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ266-267.5 Turbines. Turbomachines (General)
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Users 12 not found.
Date Deposited:	02 Sep 2019 02:55
Last Modified:	02 Sep 2019 02:55
URI:	http://repository.unsri.ac.id/id/eprint/5234

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