Integrated heat recovery boiler

Abstract

An integrated heat recovery boiler having two independent gas paths and two means for the generation of steam. The combination of duel gas paths within the same apparatus provides a cost-efficient mechanism to increase the heat energy output of a waste-heat recovery system.

What is claimed is: 
     
         1 . A dual path integrated boiler comprising a first heat recovery boiler assembly and a second conventional boiler assembly with both assemblies situated in parallel in a housing and substantially separated by a dividing structure wherein each assembly includes an independent gas pathway for the introduction and transmission of thermal energy required for the generation of steam. 
     
     
         2 . An integrated waste heat recovery system comprising:
 a heat recovery boiler section and a conventional hot water boiler section disposed in a single enclosure;   said heat recovery section comprising an upper drum, a lower drum, an inlet for the acceptance of heat input, an outlet, and a plurality of boiler tubes;   said conventional section comprising an upper drum, a lower drum, an inlet, an outlet, a plurality of boiler tubes, and a combustion chamber defined by a portion of said boiler tubes; and,   a separating structure between said heat recovery section and convention section whereby said sections are independent and heat transfer between sections is restricted.   
     
     
         3 . The system of  claim 2  wherein said separating structure is composed of metal. 
     
     
         4 . The system of  claim 2  wherein said separating structure is composed of an insulating material. 
     
     
         5 . The system of  claim 2  wherein said separating structure is composed of a combination of metal and insulating material. 
     
     
         6 . The system of  claim 2  wherein said heat recovery system is a gas turbine heat waste heat recovery system and said inlet for the acceptance of heat input provides for the acceptance of exhaust gases from a gas turbine engine. 
     
     
         7 . An integrated waste heat recovery system comprising:
 an upper drum;   a lower drum;   a heat recovery section having an inlet, an outlet, and a plurality of boiler tubes which connect said upper drum and said lower drum;   a conventional boiler section having an inlet, an outlet, a plurality of boiler tubes which connect said upper drum and said lower drum, and a combustion chamber defined by a portion of said plurality of boiler tubes;   a barrier between said plurality of boiler tubes in said heat recovery section and said plurality of boiler tubes in said conventional section whereby heat transfer between said sections is restricted.   
     
     
         8 . The system of  claim 7  wherein said barrier is composed of metal. 
     
     
         9 . The system of  claim 7  wherein said barrier is composed of an insulating material. 
     
     
         10 . The system of  claim 7  wherein said barrier is composed of a combination of metal and insulating material. 
     
     
         11 . The system of  claim 7  wherein said heat recovery system is a gas turbine heat waste heat recovery system and said inlet for the acceptance of heat input provides for the acceptance of exhaust gases from a gas turbine engine. 
     
     
         12 . An integrated waste heat recovery system comprising:
 a shared upper drum;   a heat recovery section having a first lower drum, an inlet, an outlet, and a plurality of boiler tubes which connect said upper drum and said first lower drum;   a conventional boiler section having a second lower drum, an inlet, an outlet, a plurality of boiler tubes which connect said upper drum and said second lower drum, and a combustion chamber defined by a portion of said plurality of boiler tubes;   a barrier between said plurality of boiler tubes in said heat recovery section and said plurality of boiler tubes in said conventional section whereby heat transfer between said sections is restricted.   
     
     
         13 . The system of  claim 12  wherein said barrier is composed of metal. 
     
     
         14 . The system of  claim 12  wherein said barrier is composed of an insulating material. 
     
     
         15 . The system of  claim 12  wherein said barrier is composed of a combination of metal and insulating material. 
     
     
         16 . The system of  claim 12  wherein said heat recovery system is a gas turbine heat waste heat recovery system and said inlet for the acceptance of heat input provides for the acceptance of exhaust gases from a gas turbine engine.