Dual path parallel superheater

Abstract

A dual-path parallel superheater includes a drum for delivering steam, a steam receiving apparatus opposite the drum for receiving steam, a first surface and a second which receive steam from the drum to provide first and second paths for superheating the steam before delivering it to the steam receiving apparatus. There are also spray attemperators along the first and second paths.

1 . A dual-path parallel superheater, comprising:
 a drum, said drum adapted to deliver steam;   a steam receiving apparatus opposite said drum;   a first surface adapted to receive steam from said drum, to provide a first path for superheating said steam and to deliver steam in a direction of a steam receiving apparatus;   a second surface adapted to receive steam from said drum, to provide a second path for superheating steam and to deliver steam in said direction of a steam receiving apparatus, said second path located at a position substantially parallel to said first path;   wherein each of said first path and said second path has a spray attemperator at an interstage location thereof; and   wherein said first surface and said second surface are arranged such that steam delivered from said first path and steam delivered from said second path combine so that a single quantity of steam is delivered in said direction of said steam receiving apparatus.   
     
     
         2 . A dual-path parallel superheater, comprising:
 a drum, said drum adapted to deliver steam;   a steam receiving apparatus opposite said drum;   a first surface adapted to receive steam from said drum, to provide a first path for superheating said steam and to deliver steam in a direction of said steam receiving apparatus;   a second surface adapted to receive steam from said drum, to provide a second path for superheating steam and to deliver steam in said direction of said steam receiving apparatus, said second path located at a position substantially parallel to said first path; and   wherein said first surface and said second surface are arranged such that steam delivered from said first path and steam delivered from said second path combine to so that a single quantity of steam is delivered in said direction of said steam receiving apparatus.   
     
     
         3 . The superheater according to  claim 2 , further comprising a spray attemperator along said first path. 
     
     
         4 . The superheater according to  claim 2 , further comprising a spray attemperator along said second path. 
     
     
         5 . A dual-path parallel superheater, comprising:
 a drum, adapted to deliver steam;   a first surface adapted to receive steam from said drum and to provide a first path for superheating steam;   a second surface adapted to receive steam from said drum and to provide a second path for superheating steam, said second path located at a position parallel to said first path;   wherein each of said first path and said second path has a spray attemperator at an interstage location thereof; and   wherein steam delivered from said first path and steam delivered from said second path combine to form a single quantity of steam.   
     
     
         6 . A dual-path parallel superheater, comprising:
 a drum, adapted to deliver steam;   a first surface adapted to receive steam from said drum and to provide a first path for superheating steam;   a second surface adapted to receive steam from said drum and to provide a second path for superheating steam, said second path located at a position parallel to said first path; and   wherein steam delivered from said first path and steam delivered from said second path combine to form a single quantity of steam.   
     
     
         7 . The superheater according to  claim 6 , further comprising a spray attemperator along said first path. 
     
     
         8 . The superheater according to  claim 6 , further comprising a spray attemperator along said second path. 
     
     
         9 . A method of superheating steam, comprising:
 providing a drum;   providing a steam receiving apparatus;   providing a first surface defining a first path adapted for receiving and delivering steam;   providing a second surface defining a second path adapted for receiving and delivering steam, said second path arranged substantially parallel to said first path;   delivering a first quantity of steam from said drum in the direction of said first path;   delivering a second quantity of steam from said drum in the direction of said second path;   superheating said first quantity of steam along said first path;   superheating said second quantity of steam along said second path;   delivering said first quantity of steam from said first path in the direction of said steam receiving apparatus;   delivering said second quantity of steam from said second path in the direction of said steam receiving apparatus;   wherein said first quantity of steam is delivered from said first path such that it mixes with said steam from said second path, such that said first quantity of steam delivered from said first path and said second quantity of steam delivered from said second path recombine to form a single third quantity for delivery to said steam receiving apparatus.   
     
     
         10 . The method of  claim 9 , further comprising the step of providing said first path with a spray attemperator at an interstage location thereof. 
     
     
         11 . The method of  claim 9 , further comprising the step of providing said second path with a spray attemperator at an interstage location thereof. 
     
     
         12 . A method of superheating steam, comprising:
 providing a drum;   providing a first surface defining a first path adapted for receiving and delivering steam;   providing a second surface defining a second path adapted for receiving and delivering steam, the second path arranged substantially parallel to said first path;   delivering a first quantity of steam from said drum in the direction of said first path;   delivering a second quantity of steam from said drum in the direction of said second path;   superheating said first quantity of steam along said first path;   superheating said second quantity of steam along said second path; and   delivering said first quantity of steam away from said first path;   delivering said second quantity of steam away from said second path;   wherein said first quantity of steam from said first path is delivered such that it mixes with said second quantity of steam from said second path.   
     
     
         13 . The method of  claim 12 , further comprising the step of providing a steam receiving apparatus opposite said drum. 
     
     
         14 . The method of  claim 13 , further comprising the step of delivering said first quantity of steam from said first path and said second quantity of steam from said second path in a direction of said steam receiving apparatus. 
     
     
         15 . The method of  claim 14 , wherein said steam from said first path and said steam from said second path are mixed in such manner as to combine to form a single quantity of steam for delivery to said steam receiving apparatus. 
     
     
         16 . The method of  claim 12 , said first path is provided with a spray attemperator at an interstage location thereof. 
     
     
         17 . The method of  claim 12 , said second path is provided with a spray attemperator at an interstage location thereof.