US2010064937A1PendingUtilityA1

Asphalt shingle recycling system and method

58
Individually held — no corporate assignee on recordPriority: Mar 14, 2008Filed: Mar 16, 2009Published: Mar 18, 2010
Est. expiryMar 14, 2028(~1.6 yrs left)· nominal 20-yr term from priority
Inventors:Thomas B. HarmonKirk J. Frey
B09B 3/35E01C 19/104B29K 2095/00Y02W30/62B29L 2031/108B29C 48/00B29K 2105/251C08L 95/00C10C 3/007E01C 19/1004C10C 3/12B29B 17/04B29C 48/03
58
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A method of recycling asphalt roofing material is provided. The asphalt roofing material is delivered into a treatment chamber of a processor. A heat source is provided to the treatment chamber. Heat energy is transferred from the heat source to the asphalt roofing material to produce a heated product, and the heated product is removed from the treatment chamber.

Claims

exact text as granted — not AI-modified
1 . A method of recycling asphalt roofing material, the method comprising the steps of:
 delivering the asphalt roofing material into a treatment chamber of a processor;   passing a heat source through a jacket at least partially surrounding the treatment chamber;   transferring heat energy from the heat source to the asphalt roofing material until the asphalt roofing material forms a liquefied slurry; and   removing the liquefied slurry from the treatment chamber.   
   
   
       2 . The method of  claim 1 , further comprising the step of utilizing heated oil as the heat source. 
   
   
       3 . The method of  claim 1 , further comprising the step of adding liquid asphalt to the asphalt roofing material in the treatment chamber. 
   
   
       4 . The method of  claim 1 , further comprising the step of agitating the asphalt roofing material in the treatment chamber. 
   
   
       5 . The method of  claim 1 , further comprising the step of heating the asphalt roofing material to a temperature in the range from 200 degrees Fahrenheit to 650 degrees Fahrenheit within the treatment chamber. 
   
   
       6 . The method of  claim 1 , further comprising the step of milling the liquefied slurry after it has been removed from the treatment chamber to form a final recycled product. 
   
   
       7 . The method of  claim 1 , further comprising the step of cooling the liquefied slurry after it exits the treatment chamber. 
   
   
       8 . The method of  claim 7 , further comprising the step of cooling the liquefied slurry to the range of approximately 90 degrees Fahrenheit to 110 degrees Fahrenheit. 
   
   
       9 . The method of  claim 1 , further comprising the step of passing the liquefied slurry through a hammer mill after the liquefied slurry exits the treatment chamber. 
   
   
       10 . A processor for recycling asphalt roofing material, the processor comprising:
 a treatment chamber;   an inlet disposed on the treatment chamber for allowing untreated asphalt roofing material to enter the treatment chamber;   an outlet disposed on the treatment chamber for allowing treated asphalt roofing material to exit the treatment chamber; and   a jacket at least partially surrounding the treatment chamber, the jacket having a outer wall, an inner wall, and a passageway therebetween for allowing a heat source to pass therethrough.   
   
   
       11 . The processor of  claim 10 , further comprising an agitator arm disposed within the treatment chamber, the agitator arm having a shaft and one or more paddles positioned thereon that contact the contents of the treatment chamber. 
   
   
       12 . The processor of  claim 10 , further comprising a screw conveyer disposed adjacent to the inlet for delivering untreated asphalt roofing material to the treatment chamber. 
   
   
       13 . The processor of  claim 12 , wherein the screw conveyer comprises a plurality of variable speed conveyors for regulating the flow of untreated asphalt roofing material to the treatment chamber. 
   
   
       14 . The processor of  claim 10 , wherein the heat source is heated oil, and the heated oil circulates through the jacket. 
   
   
       15 . An apparatus for recycling asphalt roofing material, the apparatus comprising:
 a jacketed agitated processor for heating the asphalt roofing material to produce a partially liquefied product;   a heating skid for supplying a heat source to the jacket of the agitated processor; and   a hammer mill for reducing the particle size of solid particles present in the partially liquefied product.   
   
   
       16 . The apparatus of  claim 15 , further comprising a sizing unit for reducing the particle size of solid particles present in the partially liquefied product before the partially liquefied product is delivered to the hammer mill. 
   
   
       17 . The apparatus of  claim 15 , further comprising a screw conveyer for delivering asphalt roofing material to the processor. 
   
   
       18 . The apparatus of  claim 17 , wherein the screw conveyer comprises a plurality of variable speed conveyors for regulating the flow of untreated asphalt roofing material to the treatment chamber. 
   
   
       19 . The apparatus of  claim 15 , further comprising one or more temperature measuring devices disposed at the outlet of the jacketed agitated processor. 
   
   
       20 . The apparatus of  claim 15 , further comprising one or more cooling devices between the outlet of the jacketed agitated processor and the inlet of the hammer mill. 
   
   
       21 . A method of recycling asphalt roofing material, the method comprising the steps of:
 delivering the asphalt roofing material into a treatment chamber of a processor;   supplying a heat source to the treatment chamber;   transferring heat energy from the heat source to the asphalt roofing material to produce a heated solid product; and   removing the heated solid product from the treatment chamber.   
   
   
       22 . The method of  claim 21 , further comprising the step of utilizing heated oil as the heat source. 
   
   
       23 . The method of  claim 21 , further comprising the step of adding liquid asphalt to the asphalt roofing material in the treatment chamber. 
   
   
       24 . The method of  claim 21 , further comprising the step of agitating the asphalt roofing material in the treatment chamber. 
   
   
       25 . The method of  claim 21 , further comprising the step of heating the asphalt roofing material to a temperature in the range from 150 degrees Fahrenheit to 650 degrees Fahrenheit within the treatment chamber. 
   
   
       26 . The method of  claim 21 , further comprising the step of grinding the heated solid product after it has been removed from the treatment chamber to form a recycled product. 
   
   
       27 . The method of  claim 21 , further comprising the step of cooling the heated solid product after it exits the treatment chamber. 
   
   
       28 . The method of  claim 27 , further comprising the step of cooling the heated solid product to the range of approximately 90 degrees Fahrenheit to 140 degrees Fahrenheit. 
   
   
       29 . The method of  claim 21 , further comprising the step of passing the heated solid product through a hammer mill after the heated solid product exits the treatment chamber. 
   
   
       30 . The method of  claim 21 , further comprising the step of passing the heat source through a jacket that at least partially surrounds the treatment chamber. 
   
   
       31 . A method of recycling asphalt roofing material, the method comprising:
 delivering the asphalt roofing material into a treatment chamber of a processor;   supplying a heat source to the treatment chamber;   transferring heat energy from the heat source to the asphalt roofing material to produce a heated product;   removing the heated product from the treatment chamber;   determining a desired temperature for the heated product exiting the treatment chamber;   measuring the actual temperature of the heated product exiting the treatment chamber; and   automatically adjusting at least one operational parameter for the processor until the desired temperature and the actual temperature of the heated product exiting the treatment chamber are substantially the same.   
   
   
       32 . The method of  claim 31 , further comprising the step of utilizing heated oil as the heat source. 
   
   
       33 . The method of  claim 31 , further comprising the step of adding liquid asphalt to the asphalt roofing material in the treatment chamber. 
   
   
       34 . The method of  claim 31 , further comprising the step of agitating the asphalt roofing material in the treatment chamber. 
   
   
       35 . The method of  claim 31 , further comprising the step of heating the asphalt roofing material to a temperature in the range from 150 degrees Fahrenheit to 650 degrees Fahrenheit within the treatment chamber. 
   
   
       36 . The method of  claim 31 , further comprising, the step of grinding the heated product after it has been removed from the treatment chamber to form a recycled product. 
   
   
       37 . The method of  claim 31 , further comprising the step of cooling the heated product after it exits the treatment chamber. 
   
   
       38 . The method of  claim 37 , further comprising the step of cooling the heated product to the range of approximately 90 degrees Fahrenheit to 140 degrees Fahrenheit. 
   
   
       39 . The method of  claim 31 , further comprising the step of passing the heated product through a hammer mill after the heated product exits the treatment chamber. 
   
   
       40 . The method of  claim 31 , further comprising:
 measuring the actual temperature of the heated product exiting the treatment chamber a plurality of times over a defined time period;   calculating an average temperature for the heated product exiting the treatment chamber over the defined time period; and   adjusting at least one operational parameter for the processor until the desired temperature and the average temperature of the heated product exiting the treatment chamber are substantially the same.   
   
   
       41 . The method of  claim 31 , wherein the treatment chamber contains one or more paddles for mixing the asphalt roofing material, and the operational parameter is the rotational speed of the one or more paddles. 
   
   
       42 . The method of  claim 31 , wherein the operational parameter is the rate at which the asphalt roofing material is delivered to the treatment chamber. 
   
   
       43 . The method of  claim 31 , wherein the operational parameter is the amount of time that the asphalt roofing material is retained in the treatment chamber. 
   
   
       44 . The method of  claim 31 , wherein the heated product is a heated solid product. 
   
   
       45 . The method of  claim 31 , further comprising passing the heat source through a jacket that at least partially surrounds the treatment chamber. 
   
   
       46 . An apparatus for recycling asphalt roofing material, the apparatus comprising:
 a processor for heating the asphalt roofing material to produce a heated solid product, the processor having an inlet and an outlet;   a heating skid for supplying a heat source to the processor;   at least one hammer mill for reducing the particle size of solid particles present in the heated product, the hammer mill having an inlet and an outlet;   a measurement device for measuring the temperature of the heated product;   an operational control device for controlling one or more operational parameters of the processor based upon the temperature indicated by the measurement device;   one or more cooling devices disposed between the outlet of the processor and the inlet of the hammer mill for cooling the heated product; and   a screw conveyer for delivering asphalt roofing material to the processor, the screw conveyer comprising a plurality of variable speed conveyors for regulating the flow of asphalt roofing material to the processor.   
   
   
       47 . The apparatus of  claim 46 , further comprising an agitator arm disposed within the processor, the agitator arm having a shaft and one or more paddles positioned thereon that contact the contents of the processor. 
   
   
       48 . The apparatus of  claim 46 , wherein the heat source is heated oil, and the heated oil transfers heat energy to the asphalt roofing material. 
   
   
       49 . The apparatus of  claim 46 , wherein the asphalt roofing material is heated to a temperature in the range from 150 degrees Fahrenheit to 650 degrees Fahrenheit within the processor. 
   
   
       50 . The apparatus of  claim 46 , wherein the heated product is cooled to a temperature in the range of approximately 90 degrees Fahrenheit to 140 degrees Fahrenheit in the cooling device. 
   
   
       51 . The apparatus of  claim 46 , further comprising a jacket disposed around the processor for receiving the heat source.

Join the waitlist — get patent alerts

Track US2010064937A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.