Method for recycling building materials
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorsBrian W. Bland, David R. Jones, IV
Life of this patent
Estimating the term…
Abstract
A method of recycling building materials is described, including the steps of introducing the building material into a cement kiln or a boiler, and combusting a combustible portion of the building material as a fuel within the kiln or boiler. The noncombustible portion of the building material is incorporated into a clinker material within the kiln or used to reduce emissions form the boiler.
Claims40
A method of recycling building materials comprising a shingle into a fuel and useful residue material, comprising the steps of:
- introducing the building materials into a combustion chamber;
- combusting an organic portion of the shingle comprising an asphalt material from a glass substrate of the shingle;
- and
- using an inorganic portion of the shingle comprising a filler in said asphalt as an emissions reduction material in a boiler.
A method of recycling a shingle into a fuel and useful residue material, comprising:
- introducing the shingle into a combustion chamber of a fluidized bed boiler having a fuel feed system and a lime feed system;
- combusting an asphalt material from a glass substrate of the shingle as a fuel within the combustion chamber;
- and
- using a filler in said asphalt as an emissions reduction material in the boiler, wherein an amount of lime fed into the boiler is reduced based on an amount of lime in the asphalt filler.
A method of recycling asphalt shingles having a filler material, comprising:
- introducing the shingles into a fluidized bed boiler having a system for feeding an amount of lime into the boiler,
- combusting the asphalt from said shingles as a fuel in said boiler;
- using said filler material to reduce emissions from said boiler,wherein the amount of lime is reduced based on the amount of lime in the shingles.
A method of recycling asphalt shingles having a filler material, comprising:
- introducing the shingles into a fluidized bed boiler having a system for feeding an amount of lime into the boiler,
- combusting the asphalt from said shingles as a fuel in said boiler;
- using said filler material to reduce emissions from said boiler, wherein the amount of lime is reduced based on the amount of shingles fed into the boiler as fuel.
A method of recycling asphalt shingles having a filler material, comprising:
- introducing the shingles into a fluidized bed boiler having a system for feeding an amount of lime into the boiler,
- combusting the asphalt from said shingles as a fuel in said boiler;
- using said filler material to reduce emissions from said boiler, wherein the amount of lime fed from the lime feed system is reduced by at least five percent due to the filler material.
A method of recycling asphalt shingles having a filler material, comprising:
- introducing the shingles into a fluidized bed boiler, said boiler combusting an amount of fuel,
- combusting the asphalt from said shingles as a part of said amount of fuel in said boiler;
- using said filler material to reduce emissions from said boiler, wherein an amount of lime fed into the boiler comprises at least live percent by weight of the fuel, and wherein the shingles contribute at least ten percent of said lime.
A method of recycling asphalt shingles having a filler material, comprising:
- introducing the shingles into a fluidized bed boiler, said fluidized bed boiler comprises a system for feeding an amount of lime into the boiler,
- combusting the asphalt from said shingles as a part of said amount of fuel in said boiler;
- using said filler material to reduce emissions from said boiler, wherein the amount of lime fed from the lime feed system is reduced by at least five percent due to the filler material.
A method of recycling building materials having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the building materials into a cement kiln;
- combusting the combustible portion of the building materials as a fuel;
- and
- incorporating the noncombustible portion of the building materials into a clinker material wherein an organic portion of the building materials is combusted and an inorganic portion of the building materials is incorporated into the clinker material, wherein the building materials comprises a shingle, the recycling process further comprising the steps of:
- combusting an asphalt material from a glass substrate of the shingle;
- and incorporating said substrate into said clinker material as a source of minerals for said cement material.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the shingles into a cement kiln;
- combusting an asphalt portion of the shingles from a glass substrate of the
- shingles as a fuel;
- and
- incorporating said substrate and a limestone or dolomitic filler material from the asphalt as a source of minerals, including calcium and magnesium from said filler, in said cement material.
A method of recycling building materials comprising a shingle into a cement material, comprising:
- removing the building materials, including the shingle, from a building along with further building materials selected from the group consisting of nails, wood, felt paper, ice shield, and roofing accessories;
- introducing the building materials into a cement kiln;
- combusting an asphalt material from a glass substrate of the shingle as a fuel and incorporating said substrate into said clinker material as a source of minerals for said cement material;
- combusting a combustible portion of the further building materials as a fuel;
- and
- incorporating the noncombustible portion of the building materials into a clinker material, wherein each of said further building materials provides fuel or raw materials for said cement material.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material, the shingles, further comprising surface granules, the method compromising:
- introducing the shingles into a cement kiln;
- combusting the combustible organic portion of the shingles as a fuel, wherein the shingles comprise asphalt and wherein the receiving process further comprising the steps of combusting said asphalt and an organic substrate of the shingles;
- and
- incorporating the noncombustible inorganic portion of the shingles into a clinker material, said granules providing a source of minerals in said cement.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material the building materials comprising a shingle including a filled asphalt, The recycling process further comprising the steps of:
- introducing the shingles into a cement kiln;
- combusting said asphalt from a glass substrate of the shingle as a fuel;
- and
- incorporating the noncombustible portion of the shingles into a clinker material, comprising incorporating said substrate into said cement material as a source of silica.
A method of recycling building materials comprising a shingle including a mineral-filled asphalt and a filler material into a cement material, the method comprising:
- introducing the shingle into a cement kiln;
- combusting the asphalt as a fuel;
- and
- incorporating the filler material of the asphalt as a source of lime, and a glass mat as a source of silica, into a clinker material.
Dependencies are inferred from the claim text.