Patent ID: 8261700

Claim:
Steam superheater ( 30 ) comprising: first and second compartment ( 301 , 302 ), in which the first compartment ( 301 ) is provided with a shell ( 305 ), a tube sheet ( 303 ), a rear end ( 307 ), tube bundle ( 309 ), baffle plates ( 317 ), and steam inlet ( 315 ) adapted to shell ( 305 ), and in which the second compartment ( 302 ) is provided with a shell ( 306 ), a tube sheet ( 304 ), a rear end ( 308 ), tube bundle ( 310 ), baffle plates ( 317 ), and steam outlet ( 316 ) adapted to shell ( 306 ); a transition compartment ( 311 ) that separates the first and second compartment and which is defined by a space in between tubesheets ( 303 , 304 ); a channelling pipe ( 312 ) passing through tubesheets ( 303 , 304 ) and thereby through the transition chamber ( 311 ) and which extends from the first compartment ( 301 ) to the second compartment ( 302 ) along the length axis ( 320 ) of the steam superheater ( 30 ); a separation wall ( 321 ) positioned between inlet chamber ( 318 ) and outlet chamber ( 319 ); said transition compartment ( 311 ) is provided with process gas inlet ( 313 ) which extends into inlet chamber ( 318 ) of the transition compartment, the inlet chamber ( 318 ) being confined between the wall of channelling pipe ( 312 ), the wall of tubesheet ( 303 ) on the one side and into which tube bundle ( 309 ) of the first compartment ( 301 ) extends, and the wall of tubesheet ( 304 ) on the opposite side and into which tube bundle ( 310 ) of the second compartment ( 302 ) extends; said transition compartment ( 311 ) is provided with process gas outlet ( 314 ), which extends from outlet chamber ( 319 ) of the transition compartment, the outlet chamber ( 319 ) being confined between the wall of channelling pipe ( 312 ), the wall of tubesheet ( 303 ) on the one side and into which tube bundle ( 309 ) of the first compartment ( 301 ) extends, and the wall of tubesheet ( 304 ) on the opposite side into which tube bundle ( 310 ) of the second compartment ( 302 ) extends; and wherein the first and second compartments 301 , 302 are connected in series with respect to the steam flow and in parallel with respect to the process gas flow.