[Gasification] reducing temp. of gasification

[Henri Naths]

Good Day A.D. Karve
Sorry about the reposting . My email , outlook express,  decided on it own 
to send that letter under my company heading or identity. Odd ?.. on a 
similar note my stereo system occasionally turns itself on at approximately 
9:00 pm. My iphone decided to "block" a call recently although TELUS tell me 
this is not possible. Gotta love the new technology, you don't even have to 
be there..lol
  Seeing we are revisiting this issue I do say the your ideas about passive 
solar / and or biodigestors are very good . Simple is good. In fact I have 
decided to heat my home and shop with  anaerobic/aerobic digester.
  I must say here also that thermal arc furnaces are energy efficient. Where 
as the energy input creates a positive outflow of  cold hard cash. When 
temperatures reach in the neighborhood of 1300c biomass / matter is broken 
down to it's core elements. There are literately hundreds of applications. 
The roi in many cases is up to 20 years & +, which is not good.
  I believe from experience that this does not have to be the case. Case in 
point ..we built a system for 20 million dollars 4 yrs ago that does exactly 
the same as a 75 million dollar system just nearing completion now. The 
newer system is plagued with cost overruns commonly referred to as "greed" .
  So when we need to factor in energy efficiency into the equation , greed 
is a big part of that equation and passive solar biogas digesters start to 
look very good.
  On an other matter I was recently intrigued by the advancement of diesel 
engines ..It seem Mazda Corp. has built an engine that has the light weight 
and compression of a gas engine and burns diesel fuel with the same 
efficiency of it heaver counterpart . Has any one in the group checked out 
this engine? I venture a guess that they are using a gasification technology 
with diesel fuel.?
Yours truly
Henri
----- Original Message ----- 
From: "Anand Karve" <adkarve at gmail.com>
To: "Discussion of biomass pyrolysis and gasification" 
<gasification at lists.bioenergylists.org>
Sent: Tuesday, October 04, 2011 9:52 PM
Subject: Re: [Gasification] reducing temp. of gasification


Dear Henry,
 There are a lot of very simple ideas that need to be tested.  I am
currently working on increasing the efficiency of biogas digesters and
feel that it might be possible to reduce the size and the capital
expense of a biogas system. For instance, when I filled the digester
with charcoal, my system accepted three times the normal daily input
and produced three times as much gas.
How much electrical energy would be required by the electric arc to
produce producer gas? One can perhaps achieve the same temperature
with paraboloid mirrors and sunlight.
Yours
A.D.Karve

On Mon, Sep 12, 2011 at 5:52 AM, Energy7 <Energy7 at telusplanet.net> wrote:
> Hi All
> I Hope this is not a double post ( I posted this from my I phone earlier
> this morning and it has yet to show up )...
>
> Dear A.D. Karve
> My exact thought a while ago was to achieve this temperature with an
> internal electric arc furnace. The resulting gas can be put thru a 
> catalyst.
> Just lately was reminded by a colleague of the efficiency of electro 
> static
> precipitators and am presently researching their compatibility with 
> producer
> gas.
> So : air tight electric arc furnace fed with co2 and preheated feed stock>
> catalyst>98%cyclone cleaning>precip> final water filter cooling >dryer > 
> co2
> removal > o2 injection >ice>recycle hot co2 exhaust to preheat feed stock.
> Just an idea.. maybe too complicated? Please send me your ideas.
> HN
> ----- Original Message ----- From: "Anand Karve" <adkarve at gmail.com>
> To: "Discussion of biomass pyrolysis and gasification"
> <gasification at lists.bioenergylists.org>
> Sent: Saturday, September 10, 2011 11:41 PM
> Subject: [Gasification] reducing temp. of gasification
>
>
>> Dear All,
>> one requires about 700C temperature for making producer gas. This is
>> generally achieved by burning the feedstock itself, for which one
>> introduces external air into the reactor. As a result, the producer
>> gas gets diluted by the nitrogen in the air. If the process can be
>> conducted in a closed vessel, which is heated from the outside, one
>> can get combustible gas without all the nitrogen, but heating the
>> feedstock inside a container cannot achieve the temperature that is
>> required for producing producer gas, so that what one gets is
>> primarily tar vapour. Has anyone thought of using a catalyst for
>> getting pyrolysis gas at say 300 C? It would help me greatly, if such
>> a catalyst were available.
>> Yours
>> A.D.Karve
>>
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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)

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