Making Torrefied Wood

Francois; Thank you for posting the drawing. This is a batch making cooker, not a continuous operation, correct? This is how you would make roasted wood to use in a gasifier for making wood gas.? TomC

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Hey, Frocois, it occured to me. Have you got any information on charcoal manufacture in the old days? I know the Swedish book touches the subject but not too clearly.

If l get your picture right, it circulates superheated steam? Its the steam that actualy heats the wood? Thats smart. Easyer to control and imposible to ignite the wood like in injecting hot air.

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For product flow, it can be done manually or with a carpet

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yes, the two-function steam, the rise in temperature while opening the windows of the wood, but last, there must be a flame to treat the roasting of the wood which thanks to its moisture, must not start a combustion, a fair adjustment must be imposed to have a successful result.

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I don’t want to bury people under outside of topic info about coal.
However…

Coke making can not be all that different, making a multi cell battery that uses the heat from other cells in a continues process to high quality charcoal has got to be worth investigating further.
The loading ideas, make a pushed of some kind.

The end product of the battery is basically white charcoal that has been heated to such an extent the pulverized feed stock has become chunks again.
I am sure we can adapt some of this method.

I avoided Coke making like the plague in my steel mill career.
Now I wish I had spent more time there learing.

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Given the carcinogens involved in coking coal, you are probably very lucky to have gone without that experience.

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5 years towards pension for each 4 years service on the batteries.
Its a bargain with the devil some people were willing to make.

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Been part of those bargains before, with little upside, the lot of many working men…

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It basically the charcoal making concept. The materials and process are usually different. They both drive off impurities through heat.

The coke is denser and more consistent. Wood density varies by species this the resulting charcoal varies. Thus harder to control the process, more material and harder to do.

I think there swiss have a process for smelting steel without coke.

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Hello wallace,

For the coal of the earth, it pollutes three times more than the charcoal, the old mine workers with their respiratory problems at the end of their career and a life time below average, reminds us of the reality, the Children in China with coal-fired power plants pay a heavy tribute, they do like Western countries, it is moving towards nuclear energy in the future,
During ww2, my father not to go to the compulsory labor service in Germany, he worked in the coal mines 50 km from his home, with no good memories,
Currently, although the Germans have a program to limit CO2 emissions using coal as energy, but I do not know if this has been successful.
I am distant with the coal coke .

cordially

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Maybe @Chris can start a new topic for this so we can get back to see wood supply?

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They have cut down a lot of their black coal use, but have only reduced their lignite use by like 10%. They import black coal which is significantly less polluting then the brown coal (lignite) that they mine locally. They also tend to gloss over the fact they export a lot of electric made from the brown coal.

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Thanks to sean and wallace for the coke making videos.
i use coal coke when I do forge welding and have still got about a ton of the “4 X 6” size that I break up as needed.

Change of subject, a bit:
Back to charcoal- Somebody asked how charcoal was made in “the old days”. I don’t know how “old” 1960 is, but here is a pretty good look from the US forest service on how it was done back then, and earlier:

Back in the mid 1970’s this booklet was free, on the bookstand at most Ag extension offices in Wisconsin.

Pete Stanaitis

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The most economical way to produce roasted wood is the use of a bread oven, after drying the wood, you cooked your meal.

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sécheur bois

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Site appears down for maintenance.

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The charcoal making pdf worked for me just now. is that the site that you found to be down for maintenance?

I see that whole link address wasn’t posted by this forum’s system, but it did work anyway. I just tried to repost the complete link but I got a message saying the i already posted it.

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It seems to be OK, now, Pete, thanks.

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