Process for minimizing dioxin formation during waste and biomass utilization

Abstract

A process for the production of high quality synthetic coal from biomass or urban waste, while effectively reducing its potential for dioxin production. The feedstock is first sorted to remove recyclable inorganic materials. After size reduction, the feedstock is pyrolyzed at a temperature range of 500 to 600° F. (260-315° C.), in a high capacity, continuous mixer reactor, using in-situ viscous shear heating of the waste materials, to produce a highly uniform, granular synthetic fuel product similar in energy content, storage and handling characteristics to, but much cleaner burning than, natural coal. The process effectively destroys dioxins and other chlorinated hydrocarbons that may be present in the feedstock, while removing and sequestering chlorine as alkali salts.

Dependencies are inferred from the claim text.