We have designed our pyrolysis system with simplicity in mind and have made the machines very robust and easy to operate & maintain.
The basic process uses a diesel burner to get the kiln to approx. 300-400° C, we then introduce feedstock into the kiln through an auger. The material drops into the pyrolysis zone where it is heated (cooked) until any moisture is driven off.
At this point the chemical structure of the material begins to change and gases bound up in the material start to release. Air is introduced, which mixes with the gases and combust them to produce more heat. Once we have steady state operation we can usually turn the burner off and the system is self sustaining.
The combusted gases are vented through the flue at temperatures above 500° C. We have the ability to capture this heat and use it for heating/drying applications.
The remaining fraction, biochar, is quenched with water before it exits the kiln to stop it combusting. We also have the capacity to “charge” the biochar with extra nutrients at this point.