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

 
Posts: 5
Location: SOUTH AFRICA
trees wood heat homestead
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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.
 
Posts: 268
Location: South Central Kansas
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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.
 
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