It's nice to hear about a gasifier that is apparently doing useful work and running smoothly. Most of what we hear about are either gasifiers by NGOs that don't work, or cheap knockoffs of Indian and Chinese gasifiers that are causing serious health problems through toxic wastewater discharge.
Tom -----Original Message----- From: Stoves [mailto:[email protected]] On Behalf Of Crispin Pemberton-Pigott Sent: Thursday, November 01, 2012 9:31 PM To: Stoves Subject: Re: [Stoves] Rice hull gasifier milling rice Will do. My son Jeremy got some nice photos as well. The thing I liked is that the gas plant looks quite modern. It has a series of squat tanks with manometers on the side which I presume are filled with water and the gas is bubbled through them sequentially. Yes? I met one of the partners last night and he told me the engine was 135 KW. Their charge per ton is amazingly low - about $60 for clean unpolished rice. This is no doubt reflecting the fact they don't pay much for motive power. I have also seen several engine and cattle drawn stove vending 'trucks' absolutely loaded with stoves. There are perhaps 6 types available for charcoal and wood. The $4 stove lasts about 9 months and the $10 about 2 years. There are different sizes but the upper limit is not so big. Above they use fixed stoves. Pots run up to 80-100 litres. Last night I made and demonstrated an ingiting cone as discussed previously here. The demonstration of low smoke ignition and the ability to burn very small amounts at a high heat has already sparked discussion of how to introduce this in the form of a permanent feature of the stove. All the charcoal stoves are metal-clad terracotta. No one seems to be processing the char fines into briquettes. Lots of room for improvement. Regards Crispin -----Original Message----- From: "Tom Miles" <[email protected]> Date: Thu, 1 Nov 2012 20:52:54 To: <[email protected]>; 'Discussion of biomass cooking stoves'<[email protected]> Subject: RE: [Stoves] Rice hull gasifier milling rice Crispin, Please send photos and we'll put them on the website. I'd love to see them. I haven't heard of a rice mill powered with a gasifier since a Chinese gasifier was used in Mali for several years. Many thanks Tom -----Original Message----- From: Stoves [mailto:[email protected]] On Behalf Of Crispin Pemberton-Pigott Sent: Thursday, November 01, 2012 8:26 PM To: Stoves Subject: [Stoves] Rice hull gasifier milling rice Dear Gasifying Friends I just stopped at a rice milling plant that is about 20 km outside Battambang. It processes about 1.9 tons per hour. It is all flat belt driven and a lot of it is made of wood. The power plant is an internal combustion engine of about 200 HP. It runs on gas. The gas is supplied by a rice hull gasifier at the back of the building where there is literally a mountain of rice hull. The gasifier looks quite modern and operates in a way that is day-and-night continuous. The rice hull is fed into the vertical reactor by an auger. The reaction zone position is not exactly constant but is maintained within certain limits. The ash/char is dropped off the top into a shallow pond to quench it. I see no reason why a small stove could not be operated in the same manner: TLUD with episodic feeding from below via a plunger of some sort. Rice hull flows easily. If the primary air control is adequate a range of 1 to 4 kW would be perfect. If anyone is interested I took pictures of the whole gas system and power plant. Regards Crispin at km post 271 outside Battambang _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists .org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/ _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists .org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/ _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
