Process for charcoal production from woody and herbaceous plant material
Patent 5435983 Issued on July 25, 1995. Estimated Expiration Date: 
November 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1538505 2537153 3090731 3929585 Process for producing solid industrial fuel Process for making coke from cellulosic materials and fuels produced therefrom Fuel pellets Method for manufacturing charcoals from paper sludge Conversion of cellulose into activated charcoal Method for producing fuel gas from organic material, capable of self-sustaining operation InventorAssigneeApplicationNo. 148278 filed on 11/08/1993US Classes:423/445R, Elemental carbon201/27, INCLUDING BURNING OF VAPORIZED PRODUCT201/35CARBONIZING UNDER PNEUMATIC PRESSURE OR VACUUMExaminersPrimary: Lander, Ferris H.Assistant: Hendrickson, Stuart L. Attorney, Agent or FirmForeign Patent References
International ClassC10B 057/04AbstractAn improved batch process for the pyrolytic conversion of woody and herbaceous plant material is provided which yields charcoal, on a dry weight basis, in yields ranging from about 35% to about 50%, having volatile matter content of about 25% or less, and fuel value of 13000 BTU/pound. The batch process can be conducted in two hours or less per batch with virtually instantaneous reloading for subsequent batches without substantial cooling of the reactor utilized for the process and without exposing the hot processed charcoal to air or oxygen sufficient to cause combustion upon removal from the reactor.Other References
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