Process for treating municipal solid waste
AssigneeEnvironmental Technology Associates
InventorMark A. McMillan
Life of this patent
Estimating the term…
Abstract
A foamed solid product characterized in that said product is produced and prepared by a continuos process comprising mixing water permeated municipal solid waste (MSW) with a solidification reagent, wherein said solidification reagent initiates a polymerization reaction with the waste and the polymerization reaction forms a rigid polymer matrix therein. In addition, the polymer matrix also expands in volume during the polymerization reaction to form a foamed, environmentally stable, recycled solid product.
Claims14
A continuous method for reacting and converting municipal solid waste into a polymer filled product comprising the steps of supplying municipal solid waste and physically removing metals from said solid waste followed by reducing the particle size of said solid waste into a size that permits said particles to be permeated with water, substantially permeating said reduced size particles with water to a level of about 10-40% (vol), followed by continuous mixing and chemically reacting said water permeated particles with a solidification reagent in an extruder or injection molding machine which solidification reagent initiates a chemical polymerization reaction with said water in said water saturated particles and solidifies said water permeated particles along with a corresponding increase in volume of about 20% or less.
A foamed solid product characterized in that said product is produced and prepared by a continuous molding process comprising supplying municipal solid waste and physically removing metals therefrom, followed by continuous mixing said municipal solid waste with water to a level of about 10-40% (vol) and a solidification reagent in an extruder or injection molding apparatus, wherein said solidification reagent initiates a polymerization reaction with said water in said waste and said polymerization reaction forms a rigid polymer matrix within said waste, which matrix also expands about 20% or less in volume during said polymerization to form said foamed solid product.
A continuous method for reacting and converting municipal solid waste into a solid polymer-filled product comprising the steps of
- (a) substantially removing metal from said waste by physically removing said metal from said waste
- (b) placing the product in step (a) into a shredder which reduces the particle size so that said particles can be substantially permeated with water to a level of about 10-40% (vol)
- (c) substantially permeating the product of step (b) with water to a level of about 10-40% (vol)
- (d) continuously mixing and chemically reacting the product of step (c) with a solidification reagent in an extruder or injection molding machine, which chemical reaction results in polymerization and solidification along with an increase in volume of about 20% or less.
Dependencies are inferred from the claim text.