US3945810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for disposal of plastics
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1974-06-13
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Granted: 1976-03-23
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Expires: 1994-06-13
Abstract
Abstract Apparatus and process for the disposal of plastic waste in conjunction with air the apparatus comprising a fluidized bed combustion unit with means for heating the plastic waste disposed within the upper portion of the combustion unit. The plastic waste is converted to hydrocarbon gases and oils within the heating means which itself comprises a fluidized bed.
Inventors
- 👤 Kiyosi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B49/10; C10B53/00; C10B53/07; C10G; C10G1/00; C10G1/02; C10J; C10J3/00; C10J3/46; C10J3/54; C10J3/56; F; F23; F23G; F23G5/00; F23G5/30; F23G7/00; F23G7/12; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/18; C10J2300/1846; C10J2300/1861; C10J2300/1884; C10J2300/1892; F23G2203/00; F23G2203/50; F23G2203/503; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/143
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
238 words
A device for combusting plastics to reduce hydrocarbons useful for industrial raw materials which comprises a. a first cylindrical fluidized combustion unit having disposed therein 1. a distributing plate which is disposed at the lower portion of said cylindrical fluidized combustion unit and is capable of supporting a fluidized medium within said unit; 2. a plastic supply means disposed in the lower portion of said fluidized combustion unit and above said distributing plate; 3. an oxygen supply means disposed in the lower portion of said cylindrical fluidized combustion unit and below said distributing plate such that oxygen introduced into said unit will pass upwardly and through said distributing plate; 4. means situated below said distributing plate for removal of the residue of combustion from said unit; 5. a fluidizing medium having a particle size of from 0.1 to 0.3 mm placed on said distributing plate; b. a cylindrical plastic supply unit for containing a supply of plastic material, said unit having a plastic supply means situated at the lower extremity of said plastic supply unit through which said plastic supply can be fed into a second cylindrical fluidization and partial oxidation unit wherein at least part of said plastic supply means is situated within said second cylindrical unit wherein plastic fed into said second cylindrical unit will be in a liquid form as it enters said second unit; c. said second cylindrical fluidization and partial oxidation unit having
Claim 2
Independent Claim
238 words
A device for combusting plastics to reduce hydrocarbons useful for industrial raw materials which comprises a. a first cylindrical fluidized combustion unit having disposed therein 1. a distributing plate which is disposed at the lower portion of said cylindrical fluidized combustion unit and is capable of supporting a fluidized medium within said unit; 2. a plastic supply means disposed in the lower portion of said fluidized combustion unit and above said distributing plate; 3. an oxygen supply means disposed in the lower portion of said cylindrical fluidized combustion unit and below said distributing plate such that oxygen introduced into said unit will pass upwardly and through said distributing plate; 4. means situated below said distributing plate for removal of the residue of combustion from said unit; 5. a fluidizing medium having a particle size of from 0.1 to 0.3 mm placed on said distributing plate; b. a cylindrical plastic supply unit for containing a supply of plastic material, said unit having a plastic supply means situated at the lower extremity of said plastic supply unit through which said plastic supply can be fed into a second cylindrical fluidization and partial oxidation unit wherein at least part of said plastic supply means is situated within said second cylindrical unit wherein plastic fed into said second cylindrical unit will be in a liquid form as it enters said second unit; c. said second cylindrical fluidization and partial oxidation unit having
Claim 3
Dependent Claim
208 words
a distributing plate which is disposed at the lower portion of said cylindrical fluidization and partial oxidation unit which is capable of supporting a fluidized medium within said unit; 2. a plastic supply means disposed in the lower portion of said cylindrical fluidization and partial oxidation unit and above said distributing plate; 3. an oxygen supply means disposed in the lower portion of said cylindrical fluidization and partial oxidation unit and below said distributing plate such that oxygen introduced into said unit will pass upwardly and through said distributing plate; 4. means situated below said distributing plate for removal of the residue of combustion from said unit; 5. a fluidizing medium placed on said distributing plate; said second cylindrical unit and said plastic supply means for feeding said second cylindrical unit being situated within the upper empty space of the first cylindrical fluidized combustion unit and in heat exchange communication with the gases generated in said first unit when said first unit is used to combust a plastic supplied thereto; d. a condenser connected to a gas outlet on said second cylindrical fluidization and partial oxidation unit such that volatile hydrocarbons generated within said second cylindrical unit are removed from said unit and are condensed within said condenser.
Claim 4
Dependent Claim
208 words
a distributing plate which is disposed at the lower portion of said cylindrical fluidization and partial oxidation unit which is capable of supporting a fluidized medium within said unit; 2. a plastic supply means disposed in the lower portion of said cylindrical fluidization and partial oxidation unit and above said distributing plate; 3. an oxygen supply means disposed in the lower portion of said cylindrical fluidization and partial oxidation unit and below said distributing plate such that oxygen introduced into said unit will pass upwardly and through said distributing plate; 4. means situated below said distributing plate for removal of the residue of combustion from said unit; 5. a fluidizing medium placed on said distributing plate; said second cylindrical unit and said plastic supply means for feeding said second cylindrical unit being situated within the upper empty space of the first cylindrical fluidized combustion unit and in heat exchange communication with the gases generated in said first unit when said first unit is used to combust a plastic supplied thereto; d. a condenser connected to a gas outlet on said second cylindrical fluidization and partial oxidation unit such that volatile hydrocarbons generated within said second cylindrical unit are removed from said unit and are condensed within said condenser.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |