P-17 Effect of combustion condition on economics of rice husk as heat and charcoal use

Abstract

This research aims to clarify the suitable combustion condition, combustion temperature and time, for enhancing economics as heat use and rice husk charcoal use. The combustion conditions contain 30 combinations with combustion temperature 200, 400, 600, 800 and 1000°C and combustion time 3, 5, 10, 20, 40 and 60 min. Economics as heat use was evaluated by the ratio of burnt plant fiber in rice husk and economics as rice husk charcoal use was evaluated by the amount of eluted soluble silica. The condition of combustion temperature 400°C and combustion time over 40 min was resulted in most suitable for enhancing economics. More, the condition of combustion temperature 600°C regardless combustion time also showed the second highest economics. Therefore, rice husk burner should be designed and controlled under this combustion condition for optimizing economics as heat use and rice husk charcoal use.