Process for producing a liquid fuel composition

Abstract

A process to produce a flowable fuel or fuel supplement from solid and/or liquid waste, such as municipal waste, industrial wastes or mixtures thereof and the system to carry out the process in which a feed of solid and liquid municipal waste, industrial wastes or mixtures thereof to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids, recombining the char and the liquids, recovered from the wastes feed, to form a feed slurry containing solids, combining the feed slurry with additional combustible waste liquids which are added at a rate and amount to obtain a fuel slurry of specified properties, particularly specified viscosity and BTU content, subjecting the feed slurry and additional wastes to conditions of attrition in at least one attrition zone to produce a product slurry containing solids of fuel size, recovering the fuel slurry which be used as fuel in partial oxidation processes. The liquid waste may be collected as a product, particularly if they are high in organic compounds.

The invention claimed is:  
     
         1 . A process comprising providing a feed of solid and liquid waste to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids, condensing and recovering said vaporized liquids, combining said char and said recovered liquids to form a feed slurry containing solids, combining said feed slurry with additional wastes comprising combustible liquids and recovering said fuel slurry as fuel product.  
     
     
         2 . The process according to  claim 1  wherein said feed slurry and additional wastes are subjected to conditions of attrition in at least one attrition zone to produce a product slurry containing solids of fuel size.  
     
     
         3 . The process according to  claim 1  or  2  wherein said additional wastes is added at a rate and amount to obtain a fuel slurry of specified properties, particularly specified viscosity and BTU content.  
     
     
         4 . The process according to  claim 3  wherein said conditions of temperature are in the range of 150 to 1000° F.  
     
     
         5 . The process according to  claim 1 ,  2  or  3  wherein said waste comprises solid and liquid municipal waste.  
     
     
         6 . The process according to  claim 1 ,  2  or  3  wherein said waste comprises agricultural waste.  
     
     
         7 . The process according to  claim 1 ,  2  or  3  wherein said waste comprises refining waste.  
     
     
         8 . The process according to  claim 1 ,  2  or  3  wherein said waste comprises non-infectious medical wastes.  
     
     
         8 . The process according to  claim 1 ,  2  or  3  wherein said waste comprises petrochemical wastes.  
     
     
         9 . A process comprising providing a feed of solid and liquid waste to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids, condensing and recovering said vaporized liquids, combining said char and said recovered liquids to form a first slurry containing solids of a first size, combining said first slurry with additional wastes comprising combustible liquids, subjecting said first slurry and additional wastes to conditions of attrition in a first attrition zone to produce a second slurry containing solids of a second size, said second size being smaller than said first size and recovering said second slurry.  
     
     
         10 . The process according to  claim 9  comprising subjecting said second slurry to attrition in a second attrition zone under conditions of attrition to produce a third slurry containing solids of a third size, said third size being smaller than said second size and recovering said third slurry.  
     
     
         11 . The process according to  claim 10  comprising subjecting said third slurry to attrition in a third attrition zone under attrition conditions to produce a fuel slurry containing solids of fourth size, said fourth size being smaller than said third size and recovering said fuel slurry as fuel product.  
     
     
         12 . The process according to  claim 9  wherein said waste is municipal waste, industrial waste or mixtures thereof.  
     
     
         13 . The process according to  claim 9  wherein said conditions of temperature are in the range of 150 to 1000° F.  
     
     
         14 . The fuel product produced according to the process of  claim 1 ,  2 ,  9  or  11 .  
     
     
         15 . A process comprising providing a feed of solid and liquid municipal waste, industrial wastes or mixtures thereof to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids, condensing and recovering said vaporized liquids and recovering said liquids as product.  
     
     
         16 . A process comprising providing a feed of solid and liquid municipal waste, industrial wastes or mixtures thereof to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids, condensing and recovering said vaporized liquids, combining said char and a portion of said recovered liquids to form a feed slurry containing solids, combining said feed slurry with additional wastes comprising combustible liquids, subjecting said feed slurry and additional wastes to conditions of attrition in at least one attrition zone to produce a product slurry containing solids of fuel size, recovering said fuel slurry as fuel product.  
     
     
         17 . The process according to  claim 16  wherein a portion of said recovered liquids are separated as product.  
     
     
         18 . A process for the production of a fuel from a waste comprising: 
 (a) providing a feed of waste to a treatment zone under conditions of temperature to produce a solid char and vaporize liquids;    (b) condensing and recovering said vaporized liquids;    (c) removing a portion of the recovered liquids as liquid fuel;    (d) combining said char and the remainder of the recovered liquids to form a feed slurry containing solids;    (e) combining said feed slurry with additional wastes comprising combustible liquids;    (f) subjecting said feed slurry and additional wastes to conditions of attrition in at least one attrition zone to produce a product slurry containing solids of fuel size; and    (g) recovering said fuel slurry as fuel product.    
     
     
         19 . The process according to  claim 18  wherein said conditions of temperature are in the range of 150 to 1000° F.  
     
     
         20 . The process according to  claim 18  wherein said waste is municipal solid waste, municipal liquid wastes, industrial solid waste, industrial liquid wastes, sanitary sewage, tires, refining waste, agricultural waste, animal waste, non-infectious medical wastes, petrochemical wastes or mixtures thereof.