초록 ▼

A semi-continuous pyrolysis arrangement is disclosed which is particularly useful in the reclamation of a base material in a substantially pure form from a composite material which has organic compounds. The furnace base barrier free zones wherein the waste material is continuously pyrolyzed as it i

A semi-continuous pyrolysis arrangement is disclosed which is particularly useful in the reclamation of a base material in a substantially pure form from a composite material which has organic compounds. The furnace base barrier free zones wherein the waste material is continuously pyrolyzed as it is indexed through the furnace and each zone is controlled in a preset manner established from pyrolyzing a sample waste specimen under controlled conditions. Preferably, the waste is containerized as a particulate solid in discrete static beds permitting a fan exhaust arrangement to establish convective heat transfer with the bed while also establishing the furnace zones. An exothermic zone is provided at the end of the furnace to remove fixed carbon from the pyrolyzed waste by bleeding substoichiometric amounts of air in an oxygen temperature controlled manner to permit recovery of the waste in a substantially pure form.

대표청구항 ▼

A thermal reclamation process for recovering a base material from a composite material including said base material and organic compounds, said base material having a critical temperature higher than the volatilizing temperature of said organic compound, said process including the steps of: (i) heat

A thermal reclamation process for recovering a base material from a composite material including said base material and organic compounds, said base material having a critical temperature higher than the volatilizing temperature of said organic compound, said process including the steps of: (i) heating said composite material by controlling the temperature of the atmosphere in the furnace enclosure to produce an endothermic reaction of said organic material, said endothermic reaction occurring at a temperature less than said critical temperature; (ii) continuing said endothermic reaction until substantially all the organic material has been volatilized and said composite material is transformed into fixed carbon and said base material; (iii) providing a substoichiometric concentration of oxygen to said atmosphere to produce an exothermic reaction between said atmosphere and said fixed carbon sufficient to maintain the temperature of said exothermic reaction to be less than said critical temperature, and (iv) continuing to supply said substoichiometric concentration of oxygen to permit said exothermic reaction to proceed until substantially all of said fixed carbon becomes associated with said atmosphere whereby said base material may be recovered in a substantially pure form.