Replacing metal rocket- with ceramic rocket stove using fire bricks in our dryer / biochar oven

Kobus Venter

Posts: 11

Location: SOUTH AFRICA

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posted 6 years ago

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We were tasked with creating a dryer oven using rocket stoves. Our first prototype was metal and although extremely durable and temperatures never exceeded 450°F we have now insulated our dryer and it also serves as the pyrolyser and temperatures are now around 1200°F:

https://vuthisa.files.wordpress.com/2018/09/img_0095.jpg

The diameter of the kilns have been increased from 1.4 metre to 1.7 metre:

https://vuthisa.files.wordpress.com/2019/03/basicsetuphoistview101.png

The solution was to use excess fire bricks and bury the rockets around the perimeter:

https://vuthisa.files.wordpress.com/2019/05/rocket_stove3.jpg

https://vuthisa.files.wordpress.com/2019/05/rocket_stove2.jpg

https://vuthisa.files.wordpress.com/2019/05/rocket_stove1.jpg

https://vuthisa.files.wordpress.com/2019/05/rocketaerial4.png

https://vuthisa.files.wordpress.com/2019/05/rocketaerial2.png

https://vuthisa.files.wordpress.com/2019/05/rocketbelow2.png

https://vuthisa.files.wordpress.com/2019/05/rocketbottom.png

https://vuthisa.files.wordpress.com/2019/05/rocketiso.png

https://vuthisa.files.wordpress.com/2019/05/rocketiso2.png

The next step is to see the effect on drying and how it can be incorporated in the making of the biochar.

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https://www.biocharkilns.com/
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Kai Walker

Posts: 327

Location: South Central Kansas

posted 6 years ago

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heating wood in an oxygen free environment isn't always going to be easy.

Too bad you couldn't make some sort of pressure cooker and convert it from inside the cooker.

NON ASSUMPSIT. I am by no means an expert at anything. Just a lucky guesser.

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