[Terrapreta] Char made made under pressurized conditions?

[John G. Flottvik]

Gerrit.

Haven't considered or tried it but I did put a sprinkler type nozzle inside 
my charcoal holding bin which did cool the top layer of char a bit. Also had 
a long water cooled angered chamber from the reactor to the char bin which 
also cooled the charcoal. I think I can improve on this by making the whole 
thing longer allowing for more cooling.

While demonstrating our portable pyrolysis unit in Wisconsin, Stephen Joseph 
used snow to cool the charcoal we made. This was also in 45 Gal drums and 
worked OK. Only a winter time with snow solution though.

On your last point, I'm not sure which would be best for soil treatment, 
charcoal or active char. Perhaps someone can answer that for us.

Regards
John


----- Original Message ----- 
From: "Gerald Van Koeverden" <vnkvrdn at yahoo.ca>
To: "John G. Flottvik" <jovick at shaw.ca>
Cc: "Greg and April" <gregandapril at earthlink.net>; "Terra Preta" 
<terrapreta at bioenergylists.org>
Sent: Monday, March 31, 2008 8:02 AM
Subject: Re: [Terrapreta] Char made made under pressurized conditions?


> John,
>
> Have you ever considered drenching hot char in water, especially the  idea 
> of injecting water into an air-tight container of hot char?
>
> This would not only solve the combustion problem, it would have the  same 
> effect, of course to a lesser extent, as the steam treatment of  charcoal 
> to activate it - i.e. increase its total porosity.  Such  char might be 
> more beneficial if it's to be used as a soil treatment.
>
> Gerrit
>
>
> On 29-Mar-08, at 10:30 AM, John G. Flottvik wrote:
>
>> Greg.
>>
>> We would put our hot charcoal into 45 gal drums with a sealed lid  to 
>> allow
>> cooling then transfer to super sacks.
>> At one time the char in drum felt only slightly warm to the touch  so we
>> transferred to super sack and stored in our 45 foot trailer. The warm
>> charcoal ignited and burned the trailer full of charcoal + the  trailer. 
>> Fire
>> department was unable to put the charcoal out so we just had to  baby sit 
>> and
>> let it burn/smolder until gone. Expensive lesson.
>>
>> Regards
>> John
>>
>> ----- Original Message -----
>> From: "Greg and April" <gregandapril at earthlink.net>
>> To: "Terra Preta" <terrapreta at bioenergylists.org>
>> Sent: Friday, March 28, 2008 8:01 PM
>> Subject: Re: [Terrapreta] Char made made under pressurized conditions?
>>
>>
>>> Hmmm........
>>>
>>> Correct me if I'm wrong, but is it not true that char can still be 
>>> quite
>>> warm, and not burn when O2 comes in contact with it?
>>>
>>> It is with that in mind that I asked what I did in my previous post -
>>> after
>>> all, you didn't exactly say at what temp the char was cooling from  did
>>> you?
>>>
>>> No offense,
>>> Greg H.
>>>
>>>
>>> ----- Original Message -----
>>> From: "Jeff Davis" <jeff0124 at velocity.net>
>>> To: "Terra Preta" <terrapreta at bioenergylists.org>
>>> Sent: Friday, March 28, 2008 19:38
>>> Subject: Re: [Terrapreta] Char made made under pressurized  conditions?
>>>
>>>
>>>> Greg wrote:
>>>>> when all you have to do
>>>>> is
>>>>> open the reactor door, since the natural composition of air is  almost
>>>>> 80%
>>>>> ( by volume )?
>>>>
>>>> If you just open the door the O2 in the air will burn up you  charcoal.
>>>>
>>>>
>>>> Kindest regards,
>>>>
>>>>
>>>> Jeff
>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>> Jeff Davis
>>>>
>>>> Some where 20 miles south of Lake Erie, USA
>>>>
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