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US3589313A Expired / Lapsed US ⏱️ 0.0 years remaining

Solid waste disposal method and apparatus

Assignee: United States Department of Health and Human Services
•
Filing: 1968-08-30
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Granted: 1971-06-29
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Expires: 1988-08-30
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Abstract

Abstract A solid waste disposal system is described with a storage and receiving carousel, a shredder, a dryer, a compressor-turbine assembly for compressing air for combustion of waste and for receiving hot gasses produced in the combustion process. Two combustion systems, a fluid bed reactor and a gasifying pyrolyzer, are described. Particulate matter harmful to the turbine and also causing air pollution is removed from the hot high pressure gas upstream of the turbine. The malodorous air from the waste storage, shredding and drying is compressed and used for combustion and the part of the hot exhaust gases from the turbine are used in the dryer.

Inventors

  • 👤 Richard D Smith
  • 👤 Dale A Furlong
  • 👤 Ronald D Kinsey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 23:17
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/02; F23G5/027; B; B03; B03B; B03B9/00; B03B9/06; F23G5/30; F23G5/44; F23G5/46; F23G2201/00; F23G2201/10; F23G2201/30; F23G2201/303; F23G2201/304; F23G2201/40; F23G2201/80; F23G2202/00; F23G2202/30; F23G2206/00; F23G2206/20; F23G2206/203; F23G2900/00; F23G2900/54601; F23J; F23J2217/00; F23J2217/10; F23J2217/102; F23J2217/40; Y; Y02; Y02E; Y02E20/00; Y02E20/12; Y02W; Y02W30/00; Y02W30/50; Y02W30/52

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 223 words
A waste disposal apparatus comprising, in combination, waste storage means for receiving and storing solid waste; shredder means for shredding the solid waste; dryer means for drying the shredded waste; combustion means for burning the burnable portions of said shredded dried waste at elevated pressure; means for conveying solid waste from said storage means to said shredder means, shredded waste from said shredder means to said dryer means, and shredded dried waste from said dryer means to said combustion means for combustion; a compressor-turbine assembly including means for compressing and heating air for combustion of said waste; means for directing said turbine compressed air to said combustion means; means for drawing malodorous air into said gas turbinE from said dryer means, said shredder means and said storage means for compression; said combustion means including a bed of inert particles to which said shredded dried waste and said compressed gases are directed for burning; means for collecting and removing the unburnable portions of said waste from said combustion chamber; means for removing the particles from the gaseous combustion stream produced in said combustion means; means for directing the combustion gases combustion gases from said combustion means to said compressor-turbine assembly; means for expanding said compressed hot gas in compressor-turbine assembly and means for directing hot gas from said compressor-turbine assembly to said dryer means.
Claim 2
Dependent Claim 20 words
The waste disposal apparatus of claim 2 including means for generating power connected to and driven by said gas turbine.
Claim 3
Independent Claim 51 words
The method of disposing of waste comprising the steps of shredding the waste, drying the waste, mixing and burning the waste with hot compressed air, expanding the burning exhaust to generate shaft work to compress air and net shaft work, and drying other waste with a portion of the expanded exhaust.
Claim 4
Independent Claim 72 words
The method of consuming waste comprising the steps of shredding the waste, drying the waste, compressing air, consuming the char combustion products of the volatilization step with the compressed air to produce hot inert gas and ash, volatilization of the waste with hot inert gas to produce char combustion products and fuel gas, burning the fuel gas in compressed air, and expanding the exhaust to compress the air and provide shaft work.
Claim 5
Dependent Claim 154 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, and means for drawing into said compressor-turbine assembly malodorous air from said shredder means, said dryer means, and said storage means as intake gases for compression.
Claim 6
Dependent Claim 146 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, and means for directing hot exhaust gases from said turbine to said dryer means for drying said waste.
Claim 7
Dependent Claim 162 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particular matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution means for conveying solid waste from said shredder meAns to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, and means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, said combustion means including means for volatilizing at least portions of said shredded dried waste and removing particulate matter from fuel gas and including means for burning material volatilized in said volatilizing means.
Claim 8
Dependent Claim 53 words
The waste disposal apparatus of claim 8 including a char combustion chamber, means for feeding compressor-turbine assembly compressed air into said char combustion chamber, means for conveying char produced in said volatilizing means into said char combustion chamber and for directing inert gaseous products from said char combustion chamber to said volatilizing means.
Claim 9
Dependent Claim 225 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, and means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, said combustion means including a char combustor chamber, means connected to said compressor-turbine assembly and said char combustor chamber for conducting compressed air from said compressor-turbine assembly to said char combustor chamber, a pyrolyzer connected to said dryer means via said conveying means for receiving said dried shredded waste and connected to said char combustor chamber for combustion and passing inert gaseous products from said char combustor chamber to said pyrolyzer to volatilize dried shredded waste, and a gas combustion chamber means connected to said pyrolyzer to receive and burn volatilization materials produced in said pyrolyzer.
Claim 10
Dependent Claim 168 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, means for directing gases heated by said combustion means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, and means connected to said compressor-turbine assembly for establishing a partial vacuum and refuse collection vacuum pipe means connected to said vacuum means for conveying refuse to said storage and shredder means.
Claim 11
Dependent Claim 141 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder meAns to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, and means connected to the exhaust of said compressor-turbine assembly for generating steam.
Claim 12
Dependent Claim 139 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by shredder means for shredding solid waste material, dryer means for drying the shredded waste, means for combusting portions of said shredded refuse at elevated pressure and temperature, means for removal of particulate matter from the hot high pressure gas which would be injurious to a turbine or cause air pollution, means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said combustion means, a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion means, means for directing gases heated by said combustion means to said compressor-turbine assembly to drive said turbine, and means for directing sewage sludge into said combustion chamber assembly.
Claim 13
Dependent Claim 183 words
Waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue and substantially pollution-free gaseous output characterized by: a compressor-turbine assembly including means receiving hot gases produced in the combustion of such waste; means for shredding solid waste material, combustion means for consuming most of the shredded waste under elevated pressure and temperature including a bed of incombustible inert particles, means for feeding compressor-turbine assembly compressed air into said combustion chamber beneath said particle bed, and means for feeding shredded waste from said shredding means into said particle bed without additional fuel whereby substantial portions of said waste are combusted in said particle bed; means for removal of particulate matter from the hot gases produced in said combustion means at substantially the consuming elevated pressure and temperature; and means for directing compressed and heated air from said compressor-turbine assembly to said combustion means and hot gases from said combustion and particle removal means to said compressor-turbine assembly to drive said turbine; and means for directing at least certain of the combustion gases from said turbine to atmosphere.
Claim 14
Dependent Claim 141 words
Waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue characterized by: a compressor-turbine assembly including means for compressing air for combusting waste material and means receiving hot gases produced in the combustion of such waste; combustion means for consuming most of the waste under elevated pressure and temperature including means for volatilizing at least portions of said waste and means for combusting material volatilized in said volatilizing means; means for removal of particulate matter from the hot gases produced in said combustion means at substantially the consuming elevated pressure and temperature; means for directing compressed and heated air from said compressor-turbine assembly to said combustion means and hot gases from said combustion and particle removal means to said compressor-turbine assembly to drive said turbine; and means for directing waste into said combustion means.
Claim 15
Dependent Claim 48 words
The waste disposal apparatus of claim 15 including a char combustion chamber to receive compressor-turbine assembly compressed air and means for conveying char produced in said volatilizing means into said char combustion chamber and for directing inert gaseous products from said char combustion chamber to said volatilizing means.
Claim 16
Dependent Claim 197 words
A waste disposal apparatus of the type for consuming solid waste refuse in a burner with minimal residue and substantially polluTion-free gaseous output characterized by shredder means for shredding solid waste material; dryer means for drying the shredded waste; means for combusting portions of said shredded refuse at elevated pressure and temperature including a combustion chamber and a bed of inert particles positioned within said combustion chamber, said particles being incombustible at the combustion temperature of said shredded dried waste; means for removal of particulate matter at substantially said elevated pressure and temperature from the hot high pressure gas which would be injurious to a turbine or cause air pollution; means for conveying solid waste from said shredder means to said dryer means and shredded dried waste from said dryer means to said particle bed without additional fuel; a compressor-turbine assembly for compressing intake gases and directing the compressed gases to said combustion chamber beneath said particle bed; means for directing high pressure exhaust gases heated by said combustion means to said compressor-turbine assembly for expansion and drive of said turbine; and means for exhausting at least certain of the combustion gases from said turbine to atmosphere.

References Cited (Backward Citations)

US2648950A Cited
US2911065A Cited
US2958298A Cited
US3109392A Cited
US3418788A Cited
US3319587A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-06-28 1974-12-28 1975-06-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-28 1978-12-28 1979-06-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-28 1982-12-28 1983-06-29 $7700.00 Window Closed / Lapsed

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