US2003017283A1PendingUtilityA1

Method of reducing fumes from a vessel of molten asphalt

42
Priority: Oct 13, 1998Filed: Aug 20, 2002Published: Jan 23, 2003
Est. expiryOct 13, 2018(expired)· nominal 20-yr term from priority
Inventors:Dave TrumboreJorge A. MarzariDave Jones
B65D 43/0231B65D 85/00C10C 3/00B65D 2543/00194Y10T428/1352B65D 2543/00731Y10T428/1334B65D 43/022Y10T428/31815B65D 2543/00537Y10T428/1386C10C 3/02B65D 2543/0062C08L 95/00C08L 23/10B65D 2543/00305Y10T428/13B65D 2543/00509B65D 2543/00796C10C 3/10B65D 65/46C08L 23/0853B65D 2543/00092B65D 2543/00546B65B 63/08B65D 2543/00296Y10T428/8305B65D 43/0212B65D 2543/00685B65D 2543/00555E01C 5/22
42
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A method and container for reducing fuming of asphalt in a heated vessel, including placing asphalt in a heated vessel to heat the asphalt to a molten state, adding a blanket material to the asphalt, the blanket material being substantially insoluble in the molten asphalt to form a skim thereon to reduce fuming therefrom.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method for reducing fuming of asphalt in a heated vessel, comprising 
 placing asphalt in a heated vessel to heat the asphalt to a molten state;    adding a blanket material to the asphalt, the blanket material being substantially insoluble in the molten asphalt to form a skim thereon to reduce fuming therefrom.    
     
     
         2 . A method according to  claim 1 , wherein the blanket material remains substantially unmelted when heated to a temperature of 275 degrees C.  
     
     
         3 . A method according to  claim 1 , wherein the blanket material comprises a thermoset material.  
     
     
         4 . A method according to  claim 3 , wherein the blanket material comprises a cellulose material.  
     
     
         5 . A method according to  claim 4 , wherein the blanket material comprises newsprint.  
     
     
         6 . A method according to  claim 4 , wherein the blanket material comprises sawdust.  
     
     
         7 . A method according to  claim 4 , wherein the blanket material comprises asphalt packaging material.  
     
     
         8 . A method according to  claim 1 , wherein the blanket material comprises a PET material.  
     
     
         9 . A method according to  claim 1 , wherein the blanket material comprises a starch material.  
     
     
         10 . A method according to  claim 1 , wherein the asphalt and blanket material are placed into a vessel and heated to melt the asphalt, the molten asphalt normally emitting fumes from the vessel, and the blanket material forms a layer on top of the asphalt when the asphalt is melted in the vessel to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the blanket material.  
     
     
         11 . A method according to  claim 10 , wherein the skim layer expands to at least 13 mm thick.  
     
     
         12 . The method of  claim 10 , wherein the amount of the blanket material is sufficient to reduce the hydrocarbon emissions of the fumes by at least about 10% of the hydrocarbon emissions from the melted asphalt in the absence of the blanket material.  
     
     
         13 . The method of  10 , wherein the amount of the blanket material is sufficient to reduce the total suspended particulates emissions of the fumes by at least about 10% of the total suspended particulates emissions from the melted asphalt in the absence of the blanket material.  
     
     
         14 . A method according to  claim 1 , wherein the asphalt is solidified prior to being placed into the heated vessel and the blanket material is added to the asphalt after the asphalt is solidified.  
     
     
         15 . A method according to  claim 14 , wherein the blanket material is added to the asphalt in the heated vessel.  
     
     
         16 . A method according to  claim 1 , wherein the asphalt is solidified prior to being placed into the heated vessel and the blanket material is added to the asphalt prior to the asphalt being solidified.  
     
     
         17 . A container of low fuming asphalt, comprising: 
 a package for holding asphalt;    asphalt solidified in the container;    a blanket material provided in the asphalt container with the asphalt, the blanket material being substantially insoluble in the molten asphalt to form a skim on top of the asphalt when the asphalt is in a molten state within a heated vessel.    
     
     
         18 . A container according to  claim 17 , wherein the blanket material comprises a thermoset material.  
     
     
         19 . A container according to  claim 18 , wherein the blanket material comprises a cellulose material.  
     
     
         20 . A container according to  claim 19 , wherein the blanket material comprises newsprint.  
     
     
         21 . A container according to  claim 19 , wherein the blanket material comprises sawdust.  
     
     
         22 . A container according to  claim 19 , wherein the blanket material comprises asphalt packaging material.  
     
     
         23 . A container according to  claim 17 , wherein the blanket material comprises a PET material.  
     
     
         24 . A container according to  claim 17 , wherein the asphalt and blanket material are placed into a vessel and heated to melt the asphalt, the molten asphalt normally emitting fumes from the vessel, and the blanket material forms a layer on top of the asphalt when the asphalt is melted in the vessel to reduce the visual opacity of the fumes by at least about 10% with respect to the same asphalt without the blanket material.  
     
     
         25 . A container according to  claim 17 , wherein the asphalt and blanket material are placed into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the blanket material forms a layer on top of the asphalt when the asphalt is melted in the vessel to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the blanket material.  
     
     
         26 . A container according to  claim 25 , wherein the skim layer expands to at least 13 mm thick.  
     
     
         27 . A container according to  claim 17 , wherein the blanket material remains substantially unmelted when heated to a temperature of 275 degrees C.  
     
     
         28 . A container of low fuming asphalt, comprising: 
 a package for holding asphalt;    asphalt solidified in the container;    a blanket material provided in the asphalt container with the asphalt, the blanket material being substantially undissolved in the molten asphalt to form a skim on top of the asphalt when the asphalt is in a molten state within a heated vessel.    
     
     
         29 . A container according to  claim 28 , wherein the blanket material comprises a thermoset material.  
     
     
         30 . A container according to  claim 29 , wherein the blanket material comprises a cellulose material.  
     
     
         31 . A container according to  claim 30 , wherein the blanket material comprises newsprint.  
     
     
         32 . A container according to  claim 30 , wherein the blanket material comprises sawdust.  
     
     
         33 . A container according to  claim 28 , wherein the asphalt and blanket material are placed into a vessel and heated to melt the asphalt, the molten asphalt normally emitting fumes from the vessel, and the blanket material forms a layer on top of the asphalt when the asphalt is melted in the vessel to reduce the visual opacity of the fumes by at least about 10% with respect to the same asphalt without the blanket material.  
     
     
         34 . A container according to  claim 28 , wherein the asphalt and blanket material are placed into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the blanket material forms a layer on top of the asphalt when the asphalt is melted in the vessel to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the blanket material.  
     
     
         35 . A container according to  claim 28 , wherein the skim layer expands to at least 13 mm thick.  
     
     
         36 . A container according to  claim 28 , wherein the blanket material does not substantially melt when heated to a temperature of 275 degrees C.  
     
     
         37 . A container according to  claim 28 , wherein the blanket material is substantially insoluble in the melted asphalt.

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