[Stoves] Rice hull gasifier milling rice

[Crispin Pemberton-Pigott]

Very interesting. I like that you ran a diesel on it. This one looks like a truck engine. It is massive. 

There was far more equipment on the gas cleaning side than I expected. I will look at the photos later but I think there are 4 cleaning vessels. The auger feeds rice hull horizontally to the bottom of a cone then upwards into the expanding cone. Then there is a vertical cylinder which is the reaction vessel then a tapering cone on top which is quite tall. I'd say the overall height is 5 metres. 

The gas travels to the mill by 75mm PVC pipe suspended above the ground about 1.5 metres. 

The mill itself is enormous with multiple machines mounted in close proximity, 6 elevators etc. 

Regards
Crispin in Phnom Penh
-----Original Message-----
From: nari phaltan <nariphaltan at gmail.com>
Date: Fri, 2 Nov 2012 12:33:19 
To: Crispin P-P<crispinpigott at gmail.com>; Discussion of biomass cooking stoves<stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] Rice hull gasifier milling rice

*Hi Crispin,*
*
*
*Your description sounds very much like our loose leafy biomass system that
we made in 1992. The ricehulls (limited testing on this biomass) were fed
into the gasifier mechanically via the conveyor and the ash/char fell into
a water tank which also doubled up as a water seal. The gasifier powered a
20 HP diesel engine. We did about 1000 hours of testing and gave up because
the cleaning of gas was quite a chore and then went for thermal
applications. www.nariphaltan.org/Gasifier.pdf*
*
*
*Cheers.*
*
*
*Anil*


On Fri, Nov 2, 2012 at 8:56 AM, Crispin Pemberton-Pigott <
crispinpigott at gmail.com> wrote:

> 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
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-- 
Nimbkar Agricultural Research Institute (NARI)
Tambmal, Phaltan-Lonand Road
P.O.Box 44
Phaltan-415523, Maharashtra, India
Ph:91-2166-222396/220945
e-mail:nariphaltan at gmail.com
          anilrajvanshi at gmail.com

http://www.nariphaltan.org

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