[Terrapreta] Fwd: Char made made under pressurized conditions?

[Gerald Van Koeverden]

John,

Just thinking a little further on this idea, is the kinetic heat in  
the char exiting directly from the furnace utilized in your pyrolysis  
systems?

If that char is at 500 degrees, wouldn't one kilogram of hot char be  
enough to boil several liters of water without any combustion?  Or is  
that heat utilized elsewhere in the system?

Gerrit

Begin forwarded message:

> From: Gerald Van Koeverden <vnkvrdn at yahoo.ca>
> Date: March 31, 2008 11:02:57 AM EDT (CA)
> To: John G. Flottvik <jovick at shaw.ca>
> Cc: Greg and April <gregandapril at earthlink.net>, Terra Preta  
> <terrapreta at bioenergylists.org>
> 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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>>
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