Biomass charcoal is including rice husk charcoal, straw charcoal, saw dust charcoal, fruit shell charcoal ( coconut shell, palm shell etc.). If the biomass charcoal is only regarded as fuel to use, half of the carbonization equipment can basically meet the conditions. But some charcoal products need biomass charcoal content between 60%-80%, which is a test of the equipment’s structure and performance.
What determines the quality of charcoal is how much it touches air ( oxygen ) in the carbonization ( dry distillation ) reaction process. The less it touches, the higher the charcoal’s quality is, and it’s easier to process high-quality charcoal products. But carbonization equipment can’t effectively separate air and materials, so we can’t guarantee that the biomass charcoal’s quality meets criterion 100%. Air is mixed with materials and fed into the mainframe in the process of feeding materials. Only sufficiently compress materials, can the present technology reduce the quantity of entering air, and then improve the quality of carbonization. The advanced method in the international is that pushing out the air in the mainframe by pressure through vacuum equipment and then carbonize. This is the ideal method now before technology reaches.
Though it starts late, it has fast progress. Many enterprises design kinds of rational structure cabonization machines in the support of environmental protection administration. Though there is no industry rule explaining the working principle of carbonization machine at present, as current trend continues, oxygen-free carbonization machine proprietary intellectual property rights will achieve soon.