A new Box-Kiln was developed in 2019/ 2020
more information will follow soon....
Volume Box: 2m x 1m x 1,73m = about ~3,5m³
Effective volume of wood loaded: 1,9m x 0,9m x 1,6m = ~2,74m³
Weight of wood: about 650kg and about 20% humidity (~130kg of water)
Weight of wood oven dry: ~520kg
Charcoal received: about ~150kg
EFFiCiENCY: about ~29%
Operation time: about 12 hours
Cooling time: about 1 night and 1/2 day
Construction costs: about 500€ - 900€ depending on the country
Weight of bamboo: about 338kg and about 17% humidity (~57kg of water)
Weight of bamboo oven dry: ~274kg (7kg not carbonized)
Bamboo Charcoal received: about ~74kg
EFFiCiENCY: about ~26%
This Box-Kiln should replace the common Ring-Kiln made from a round metal sheet.
This is not a retort kiln which burns most of the volatiles-
however, it might be possible to integrate an afterburner?
This Box-Kiln was filed under Intellectual Property Protection (patent) and the Box-Kiln should not be build without the inventor's consent (Ch.ADAM).
Check my YOUTUBE Video Clip on the Box-Kiln:
|Round steel kiln (Ring Kiln)||
Complicated Construction: needs a sophisticated metal workshop, as a roller-sheet bending machine is needed to bend large metal sheets into a circle shape.
Simple Construction: simple construction in any village workshop, just (extensive) welding and no sheet needs to be cut.
Operation by more persons: it needs 2 or more persons to lift and remove the lid and upper ring of a round steel ring.
|Operation by a single person: a single person can tilt the Box-Kiln because of the counterweights to ease tilting (option: if money needs to be saved, skip the counterweights)|
|Biomass (wood) needs to be cut short into short pieces of different length- according to the variation of a cross-section of the kiln.||Biomass (wood) can be used in one standard length (about 2 meters).|
Medium efficiency which is not really enough to justify and benefit all the investment
Higher efficiency because of the top of the Box-Kiln can be easily insulated by a removable lid/cover. For quick cooling, the lid/cover can be removed.
Medium volume (2,5m³) for filling with biomass
High volume for filling with biomass, about 4m² if 1m x 2m metal sheets are used
Difficult access to recover the charcoal, as the charcoal needs to be taken out from the deep hole if the kiln.
Easy access for loading the biomass and offloading of the charcoal, as the box will be tilted upwards to ~90°
|dt.||With some small modification- trials for an integrated afterburner within the box can be made- for clean combustion of the wood gas|
Box-kiln can be loaded on a pick-up f transport
Quick construction within a few days
Already registered under the “Intellectual Property Law” to save the project's investment.
HORNO CEVAG (Fabricación de carbón vegetal)
At least 3 workers are needed to mantle, to reassemble a ring-kiln together. Here a ring-kiln operated in South America.
Just for comparison :
A professional charcoal producer from PAKiSTAN claims a low efficiency of 10% for his brick kilns and an operation time from 12 to 15 days!
(Making Charcoal in Pakistan | How to make charcoal).
He claims to buy the wood and sell the charcoal for 10 x more (increase in value) ....
If you want to add a comment, go the the 3rd page "adam-retort kiln" to add a comment, thanks...