[Gasification] Gasification Digest, Vol 20, Issue 27

[Rosmini dela Cruz]

Dear All,

I just recently signed up to your list and I would like to share with you my little experience in rice husk gasification.

The design of my downdraft gasifier using rice husk as feedstock was based on the guidelines issued by Prof. Alexis Belonio who has extensive experience in rice husk gasification. The inside diameter of the reactor is about 39 cm and the height is about 140 cm.

The air supply for the ash conveyor system and reactor is through a one hp electric motor propelled blower. The electric motor has 1750 rpm and in my initial testing, I observed there is too much air supply because the rice husk inside the reactor is coming up in the hooper. 

I do not have instrument to measure the exact air supply required for proper gasification. The blower I used is intended for rice milling operation, the blade has length of 4 inches. In order to reduce the air supply I intend to reduce the gear ratio to 3 (motor shaft) is to 5 inches (blower shaft), thereby lowering the speed of the blower.

The air supply system has a devise, butterfly manifold, to control air flow to the reactor.

I intend to use the gasifier for thermal heat required for distillery of rice wine and drying of grains.

I have a rice mill with capacity of 80-cavan (3,200 kg.) of rice paddy, thus, I have a captive supply of rice husk.

After I have modified the air supply, I will share with you the result of testing.

Best regards,

Ross dela Cruz



       
---------------------------------
Looking for last minute shopping deals?  Find them fast with Yahoo! Search.