METHOD OF PRODUCING ACTIVATED CARBON FROM BAMBOO SCAFFOLDING WASTE, WASTE WOODEN PALLET AND THE LIKE AND THE APPARATUS THEREFOR

摘要

This invention discloses an apparatus and a method for producing activated carbon with high quality from feedstock of bamboo scaffolding waste, waste wooden pallets and the like. The apparatus is an indirect heated rotary kiln comprises a rotary shell; at least one heating tube adapted to be fixedly positioned inside said rotary shell; and at least one activation agent injection pipe adapted to be fixedly positioned within the stationary heating tube. The method is characterized in having part of the fuel gas generated in the carbonization process stored in the indirect rotary kiln before being delivered to a furnace for combustion. The method is further characterized in having the activation agent heated inside the furnace prior to a further heating inside the heating tube. After this further heating, the activation agent is injected into the reactor and activates the char therein. Excess and unreacted activation agent and synthesis gas generated through the activation process are mixed with the fuel gas inside the reactor and the mixture will then be sent back to the furnace for combustion to generate heat and energy to sustain the activation process.

主权项

1. An indirect rotary kiln for the production of activated carbon from feedstock, wherein said indirect rotary kiln comprises
a) a rotary shell comprising a reactor cavity created therewithin; b) at least one heating tube adapted to be fixedly positioned inside said rotary shell; and c) at least one activation agent injection pipe adapted to be fixedly positioned within said heating tube; wherein a first portion of a first devolatilization product is adapted to retain within said kiln for further mixing and reacting with synthesis gas produced from activation of a second devolatilization product to supply heat for said devolatilization.