US4098649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of organic waste material
Assignee: RRM Co 200 WASHINGTON SQ NORTH LANSING MI 48933
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Filing: 1976-02-05
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Granted: 1978-07-04
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Expires: 1996-02-05
Abstract
Abstract Apparatus and the method of converting organic material such as that separated from municipal and industrial waste into useful products by using a form of an extruder in a continuous destructive distillation process and in which the material being processes is compressed in the extruder in the absence of air and is heated to carefully controlled temperatures in separate zones to extract different products from each of the zones.
Inventors
- 👤 Donald S. Redker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
C; C10; C10B; C10B47/00; C10B47/28; C10B47/32; C10B47/44; C10B53/00; C10B57/00; C10B57/02; C10B7/00; C10B7/10; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y10; Y10S; Y10S264/00; Y10S264/911
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
The method of destructive distillation of organic waste material comprising; the steps of pulverizing and drying said organic material, continuously delivering said pulverized and dried material to one end of an extruder having an elongated barrel and a screw therein in which the volume within said barrel is greater at said one end than the other, continuously advancing said material from one end of said barrel to the other in the absence of air, exerting force on said material by said screw while it being advanced in said barrel to compress the material, heating the material in a first zone of said barrel to a first temperature to initiate volatilization of the material, extracting gases from said barrel at the end of said zone, heating the material in a second zone of said barrel to a second and substantially higher temperature, extracting gases from said barrel at the end of said second zone, cooling the material in a final zone of said barrel, and extracting residue of said material from said final zone.
Claim 2
Independent Claim
173 words
The method of destructive distillation of organic waste material comprising; the steps of pulverizing and drying said organic material, continuously delivering said pulverized and dried material to one end of an extruder having an elongated barrel and a screw therein in which the volume within said barrel is greater at said one end than the other, continuously advancing said material from one end of said barrel to the other in the absence of air, exerting force on said material by said screw while it being advanced in said barrel to compress the material, heating the material in a first zone of said barrel to a first temperature to initiate volatilization of the material, extracting gases from said barrel at the end of said zone, heating the material in a second zone of said barrel to a second and substantially higher temperature, extracting gases from said barrel at the end of said second zone, cooling the material in a final zone of said barrel, and extracting residue of said material from said final zone.
Claim 3
Dependent Claim
31 words
The method of claim 1 in which the temperature of the material in said final zone is less than the temperature of the material at the end of said first zone.
Claim 4
Dependent Claim
27 words
The method of claim 1 in which the force exerted on said material is increased progressively from one end to the other of each of said zones.
Claim 5
Dependent Claim
38 words
The method of claim 1 in which the material is confined in said barrel and the volume of the material is reduced uniformly from one end to the other of each of said zones to compress said material.
Claim 6
Dependent Claim
37 words
The method of claim 1 in which material is delivered to the barrel of the extruder to maintain the barrel completely filled with material as it is advanced from one end of the barrel to the other.
Claim 7
Independent Claim
148 words
The method of destructive distillation of organic waste material comprising; the steps of pulverizing and drying said organic material, continuously feeding said pulverized and dried organic material from one end to the other through an elongated barrel of an extruder in which the material containing volume within said barrel decreases from one end to the other to apply pressure to said material, said feeding occurring in the absence of air in said extruder, heating successive and separate zones of said extruder barrel to successively increase the temperature levels in each of said zones, a first one of said zones being heated to a temperature in a range of 400° to 600° F. to initiate volatilization of said material, extracting gases from each of said zones and conveying them separately to storage facilities, and cooling a final zone of said extruder and extruding solid residue from said final zone.
Claim 8
Independent Claim
148 words
The method of destructive distillation of organic waste material comprising; the steps of pulverizing and drying said organic material, continuously feeding said pulverized and dried organic material from one end to the other through an elongated barrel of an extruder in which the material containing volume within said barrel decreases from one end to the other to apply pressure to said material, said feeding occurring in the absence of air in said extruder, heating successive and separate zones of said extruder barrel to successively increase the temperature levels in each of said zones, a first one of said zones being heated to a temperature in a range of 400° to 600° F. to initiate volatilization of said material, extracting gases from each of said zones and conveying them separately to storage facilities, and cooling a final zone of said extruder and extruding solid residue from said final zone.
Claim 9
Dependent Claim
45 words
The method of claim 6 in which the gases extracted from at least one of said zones are heated to a temperature greater than the temperature of the associated zone to convert the extracted gases to other gases prior to delivery to said storage facilities.
Claim 10
Dependent Claim
22 words
The method of claim 1 wherein the gases which are extracted from said first and second zones are conveyed to respective condensers.
Claim 11
Dependent Claim
51 words
The method according to claim 8 wherein said gases which are extracted from one of said zones are heated to a temperature greater than the temperature in the zone from which they are extracted and prior to delivery to the associated condenser to convert the extracted gases to still other gases.
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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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |