GASIFICATION OF COAL AS A SOURCE OF HEAT ON ALTERNATIVE OF CARBONATION PROCESS TO MAKE A LOCAL BRIQUETTE

http://www.arpnjournals.com/jeas/volume_04_2016.htm (Abstract)
http://www.arpnjournals.org/jeas/research_papers/rp_2016/jeas_0216_3640.pdf (Full paper)

ABSTRACT
The aims of the research work described in this paper is to find out an alternative source of heat in carbonation process to make local briquettes using cheaper fuel by mean of heat generated from the combustion gases of coal gasification. The research was initiated from collecting raw materials which has a low calorific value. Initially, coal was dried to make a maximum moisture content up to 12 % and form the coal at size of 10 cm. Further process were filling the vertical downdraft gasifier as much as 6 kg of coal, burned it with liquid petroleum gas (LPG) as ignitier, turn on the blower with the maximum speed in order to find combustion process. After that, all coal in the surface of gasifier have been burned, attach the burner and then count the velocity of air that was produced by blower as parameters to obtain the optimal velocty in order to get the perfect combustion. The result showed that the coal gasification technology with vertical downdraft gasifier system is promising to be developed as a source of heat in the process of carbonation of local coal briquettes. Using 6 kg of coal gasification can produce temperature at furnace carbonation around 170 o C as long as 60 mim with local kokas-briquettes that are carbonated at 10 kg. Keywords: local coal briquettes, gasification, vertical downdraft gasifier, coal.