Heat exchanger

Abstract

The invention relates to a heat exchanger, in particular for a synthesis gas installation, for the heat exchange between a first and a second medium (W, G), comprising a shell ( 10 ), which is made to extend along a longitudinal axis (L) and bounds a shell space (M) for receiving the first medium (W), a tube space (R), which is surrounded by the shell space (M), for receiving the second medium (W), and a pass baffle ( 20 ), which is arranged in the shell space (M) and made to extend along the longitudinal axis (L), for directing the first medium (W), carried in the shell space (M), along the longitudinal axis (L). According to the invention, it is provided that the pass baffle ( 20 ) is welded to the shell ( 10 ).

1 . A heat exchanger for providing heat exchange between a first and a second medium (W, G), comprising:
 a shell ( 10 ), extending along a longitudinal axis (L), which bounds a shell space (M) for receiving a first medium (W),   a tube space (R), surrounded by said shell space (M), for receiving a second medium (G), and   a pass baffle ( 20 ), arranged in said shell space (M) and made to extend along said longitudinal axis (L), for directing first medium (W) carried in said shell space (M) along said longitudinal axis (L), wherein said pass baffle ( 20 ) is welded to said shell ( 10 ).   
     
     
         2 . The heat exchanger according to  claim 1 , wherein said shell ( 10 ) has a first shell part ( 101 ), which is made to extend along said longitudinal axis (L), and a second shell part ( 102 ), which is made to extend along said longitudinal axis (L) and lies opposite to said first shell part ( 101 ) transversely in relation to said longitudinal axis (L), the two shell parts ( 101 ,  102 ) being connected to one another with said pass baffle ( 20 ) interposed. 
     
     
         3 . The heat exchanger according to  claim 2 , wherein said pass baffle ( 20 ) has a first peripheral region ( 21 ) with a first side ( 21   a ), which faces said first shell part ( 101 ), and a second side ( 21   b ), which is remote from said first side ( 21   a ) and faces said second shell part ( 102 ), said first shell part ( 101 ) being connected by a first end face ( 103 ), made to extend along said longitudinal axis (L), to said first side ( 21   a ) of said first peripheral region ( 21 ) by way of a first weld seam ( 31 ), and said second shell part ( 102 ) being connected by a first end face ( 104 ), made to extend along said longitudinal axis (L), to said second side ( 21   b ) of said first peripheral region ( 21 ) of said pass baffle ( 20 ) by way of a second weld seam ( 32 ). 
     
     
         4 . The heat exchanger according to  claim 3 , wherein said pass baffle ( 20 ) has a second peripheral region ( 22 ) with a first side, which faces said first shell part ( 101 ), and a second side, which is remote from said first side and faces said second shell part ( 102 ), said first shell part ( 101 ) being connected by a second end face ( 105 ), made to extend along said longitudinal axis (L), to said first side of said second peripheral region ( 22 ) by way of a third weld seam ( 33 ), and said second shell part ( 102 ) being connected by a second end face ( 106 ), made to extend along said longitudinal axis (L), to said second side of said second peripheral region ( 22 ) of said pass baffle ( 20 ) by way of a fourth weld seam ( 34 ). 
     
     
         5 . The heat exchanger according to  claim 4 , wherein the two peripheral regions ( 21 ,  22 ) lie opposite one another transversely in relation to the longitudinal axis (L). 
     
     
         6 . The heat exchanger according to  claim 3 , wherein said weld seams ( 31 - 34 ) are formed continuously in a cross-sectional plane running perpendicularly in relation to said longitudinal axis of said shell ( 10 ), so that said weld seams ( 31 - 34 ) respectively have an outer side ( 31   a - 34   a ), which faces an outer space (A) surrounding the shell ( 10 ), is adjacent thereto and goes over into an outer side ( 101   a ,  102   a ) of the respectively assigned shell part ( 101 ,  102 ) of said shell ( 10 ), and said weld seams ( 31 - 34 ) also respectively an inner side ( 31   b - 34   b ), which faces the shell space (M), is adjacent thereto and goes over into an inner side ( 101   b ,  102   b ) of the respectively assigned shell part ( 101 ,  102 ) of said shell ( 10 ) that faces said shell space (M) and goes over into a respectively assigned side ( 20   a ,  20   b ) of said pass baffle ( 20 ). 
     
     
         7 . The heat exchanger according to  claim 3 , wherein, in a cross-sectional plane running perpendicularly in relation to said longitudinal axis (L) of said shell ( 10 ), said weld seams ( 31 ,  34 ) initially narrow towards said shell space (M) and widen again in the region of an inner side ( 101   b ,  102   b ), facing said shell space (M), of the respectively assigned shell part ( 101 ,  102 ), so that said weld seams ( 31 ,  34 ) reach behind said inner sides ( 101   b ,  102   b ) of the respectively assigned shell part ( 101 ,  102 ). 
     
     
         8 . The heat exchanger according to  claim 3 , wherein said pass baffle ( 20 ) narrows at said peripheral regions ( 21 ,  22 ) towards an outer space (A) surrounding said shell ( 10 ). 
     
     
         9 . The heat exchanger according to  claim 3 , wherein said pass baffle has a constant thickness at said peripheral regions ( 21 ,  22 ). 
     
     
         10 . The heat exchanger according to  claim 1 , wherein said heat exchanger ( 1 ) has at least one stiffening ring ( 80 ), which runs around on said shell ( 10 ) transversely in relation to the longitudinal axis (L) and in particular is welded to the shell ( 10 ), the at least one stiffening ring ( 80 ) particularly reaching around the shell ( 20 ) or the shell ( 10 ) reaching around the stiffening ring ( 80 ). 
     
     
         11 . The heat exchanger according to  claim 1 , wherein said pass baffle ( 20 ) divides said shell space (M) into a first portion ( 201 ), which is made to extend along said longitudinal axis (L), and a second portion ( 202 ), which is made to extend along said longitudinal portion (L) and lies opposite said first portion ( 201 ), the two portions ( 201 ,  202 ) being connected to one another in a flow-directing manner particularly in the region of a first end portion ( 2 ) of said shell space (M), and the two portions ( 201 ,  202 ) respectively surrounding an assigned part of said tube space (R), so that first medium (W), carried in the two portions ( 201 ,  202 ), can enter into indirect heat exchange with second medium (G), carried in the respectively assigned part of said tube space (R). 
     
     
         12 . The heat exchanger according to  claim 11 , wherein an inlet ( 210 ), for introducing first medium (W) into said first portion ( 201 ) of said shell space (M), and an outlet ( 211 ), for withdrawing first medium (W) out of said second portion ( 202 ) of said shell space (M), are provided on said shell ( 10 ), at a second end portion ( 3 ) of said shell space (M) that lies opposite from said first end portion ( 2 ) of said shell space (M) along said longitudinal axis (L). 
     
     
         13 . The heat exchanger according to  claim 1 , wherein heat exchanger ( 1 ) has a plurality of cross baffles ( 40 ), which are arranged in said shell space (M) and are designed and intended to deflect first medium (W), carried in said shell space (M) transversely in relation to said longitudinal axis (L), neighboring cross baffles ( 40 ) particularly being arranged offset in relation to one another, and said cross baffles ( 40 ) particularly extending respectively perpendicularly away from said pass baffle ( 20 ), and said cross baffles ( 40 ) particularly being fixed to said pass baffle ( 20 ), in particular welded to it. 
     
     
         14 . The heat exchanger according to  claim 1 , wherein said tube space (R) of said heat exchanger ( 1 ) is formed by a tube bundle arranged in said shell space (M), said tube bundle (R) having at least a first tube ( 61 ), running along the longitudinal axis (L) and at least a second tube ( 62 ), running along the longitudinal axis, which tubes are connected to one another by way of a U-shaped tube portion ( 63 ), the two tubes ( 61 ,  62 ) being anchored at a respective free end ( 611 ,  621 ), lying opposite from said U-shaped tube portion ( 63 ), in a tube sheet ( 6 ) of said tube bundle (R). 
     
     
         15 . The heat exchanger according to  claim 14 , wherein said tube sheet ( 6 ) separates said shell space (M) from a head (K) of said heat exchanger ( 1 ). 
     
     
         16 . The heat exchanger according to  claim 15 , wherein said head (K) is divided into an inlet chamber ( 301 ) and an outlet chamber ( 302 ), wherein second medium (G) can be introduced into said tube space (R) by way of said inlet chamber ( 301 ), and wherein second medium (G) can be withdrawn from said tube space (R) and out of the heat exchanger ( 1 ) by way of said outlet chamber ( 302 ), an inlet ( 310 ), which is connected to the inlet chamber ( 301 ) and is provided for introducing second medium (G) into said inlet chamber ( 301 ), and an outlet ( 311 ), which is connected to the outlet chamber ( 302 ) and is provided for withdrawing second medium (G) out of said outlet chamber ( 302 ), particularly said inlet ( 310 ) and said outlet ( 311 ) being provided on said shell ( 10 ).