[Stoves] A continuous feed rice husk gasifier for parboiling 40 kg of rice?

[abraham abyslo]

Dr. TLUD,greetings from  ten your students in West Africa.

We plant rice in our cooperative and use open fire fuelled with big
wood sawings in soaking and steaming to parboil the rice.

We will like to contribute in answering your questions by sendind
photographs of our boiler,soaking tanks and the wood chunks we use.
Some farmers use 200litre iron drums. We use tanks that hold 500kg
each.

We make briquettes also from the husk without charring. We will like
you to teach us the construction of a pyrolizer that will char at
least 500kg of husk in a charge or  one with continuos feed and a
stove to repace the open fire.

The boiler is a horozontal drum of 1.5m diameter and 2m lenght. It is
supported with adobe bricks all along its lenght and about 1.2m above
ground. We now we use too much wod with this fire and need to improve.
Those who use drums place them on 3 or 4 supports that raise the
bottom of the 200litre drum about 50cm above the ground.

We a thank you for your work in improving cooking for all.



On 2/17/15, Paul Anderson <psanders at ilstu.edu> wrote:
> Dear Serge,
>
> Thanks for the message.   The topic is interesting to me, and probably
> some others.   So I have some questions:
>
> 1.  What heat source(s) are you currently using?   Do you have
> batch-operations of rice husk gasifiers already?   What is good and what
> is bad about them?
>
> 2.  Is your operation the only one, or could there be other similar
> businesses that might also want to improve their heat sources?
>
> 3.  I assume that all of the associated structures are in place,
> functional, and are expected to be part of the new operation. Structures
> such as the large vessels (pots, trays, cauldrons, etc.) and also the
> boiler.
>
> 4.  Please send us some photos of the existing installation. There are
> issues such as height of the boiler above ground that can influence what
> options could be for the new "fire box."
>
> 5.  Are you or others in your area interested in biochar from the rice
> husks?   If so, a pyrolyzer (rather than a full process gasifier) might
> be more appropriate.
>
> In case other readers have a question about parboiled rice husks as
> fuel, here in the USA we get rice husks from a company, and all of their
> husks that are available to us are parboiled, and they work very well in
> the TLUD gasifiers (with fan power, of course.).
>
> Looking forward to the additional information and then the discussion,
> via the Listserv for a while, and eventually direct emails.
>
> Paul
>
> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
> Email:  psanders at ilstu.edu
> Skype: paultlud      Phone: +1-309-452-7072
> Website:  www.drtlud.com
>
> On 2/16/2015 7:28 AM, Serge Horsmans wrote:
>> Dear all,
>>
>> I am wondering if a continuous feed rice husk gasifier could be used
>> in the parboiling process of rice in Benin.
>> The three basic steps of parboiling are soaking, steaming and drying.
>> For parboiling we first soak 40 kg of paddy in 25 l. of water . The
>> paddy and the water are heated to 80°C.  Could this be done with  a
>> continuous gasifier ?
>> Next we steam for about 30 min. with about 6 l. water. Could this be
>> done with the same continuous gasifier we used for soaking ?
>> It will be used outdoor.
>> I am looking forward to your answers.
>>
>> Kind regards,
>>
>> Serge
>>
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