Continuous evaporator

Abstract

A continuous evaporator for a horizontally constructed waste heat steam generator is provided. The continuous evaporator includes a first evaporator heating surface having a plurality of essentially vertically arranged first steam generator tubes through which a flow medium may flow from bottom to top, and another second evaporator heating surface which is mounted downstream of the first evaporator heating surface on the flow medium side. The second evaporator heating surface includes a plurality of additional essentially vertically arranged second steam generator tubes through which a flow medium may flow from bottom to top. An aperature system is arranged downstream of the second steam generator tubes on the flow medium side.

1 - 9 . (canceled) 
     
     
         10 . A continuous evaporator for a horizontally constructed waste heat steam generator, comprising:
 a first evaporator heating surface which incorporates a plurality of first steam generation tubes, a first arrangement of which is essentially vertical and through which a flow is from the bottom to the top;   a second evaporator heating surface, which on a flow substance side is connected downstream from the first evaporator heating surface, which incorporates a plurality of second steam generation tubes, a second arrangement of which is essentially vertical and through which the flow is from the bottom to the top; and   an aperture system that is connected downstream on the flow substance side from the plurality of second steam generation tubes.   
     
     
         11 . The continuous evaporator as claimed in  claim 10 , wherein the aperture system incorporates a plurality of apertures arranged in the individual second steam generation tubes. 
     
     
         12 . The continuous evaporator as claimed in  claim 10 , wherein an aperture opening of each aperture is chosen in such a way that a prescribed frictional pressure loss for the flow substance is established via the aperture system. 
     
     
         13 . The continuous evaporator as claimed in  claim 12 , wherein each aperture includes as the aperture opening a bore with a diameter between 10 and 20 mm. 
     
     
         14 . The continuous evaporator as claimed in  claim 10 , wherein the aperture system incorporates a plurality of apertures connected one after another on the flow substance side. 
     
     
         15 . The continuous evaporator as claimed in  claim 10 , wherein the plurality of second steam generation tubes are connected one after another on a heating gas side as a tube series. 
     
     
         16 . The continuous evaporator as claimed in  claim 10 , wherein the first evaporator heating surface is connected downstream from the second evaporator heating surface on a heating gas side. 
     
     
         17 . A waste heat steam generator, comprising:
 a continuous evaporator as claimed in  claim 10 .   
     
     
         18 . The waste heat steam generator as claimed in  claim 17 , wherein upstream from the waste heat steam generator on the hot gas side is connected a gas turbine. 
     
     
         19 . The waste heat steam generator as claimed in  claim 17 , wherein the aperture system incorporates a plurality of apertures arranged in the individual second steam generation tubes. 
     
     
         20 . The waste heat steam generator as claimed in  claim 17 , wherein an aperture opening of each aperture is chosen in such a way that a prescribed frictional pressure loss for the flow substance is established via the aperture system. 
     
     
         21 . The waste heat steam generator as claimed in  claim 20 , wherein each aperture includes as the aperture opening a bore with a diameter between 10 and 20 mm. 
     
     
         22 . The waste heat steam generator as claimed in  claim 17 , wherein the aperture system incorporates a plurality of apertures connected one after another on the flow substance side. 
     
     
         23 . The waste heat steam generator as claimed in  claim 17 , wherein the plurality of second steam generation tubes are connected one after another on a heating gas side as a tube series. 
     
     
         24 . The waste heat steam generator as claimed in  claim 17 , wherein the first evaporator heating surface is connected downstream from the second evaporator heating surface on a heating gas side.