Conducting Device For Controlling The Flow Of Liquid When Feeding In Two-Phase Streams In Block-In-Shell Heat Exchangers

Abstract

A heat exchanger having a casing defining an encased area and at least one plate heat exchanger arranged in the encased area for indirectly exchanging heat between a first medium and a second medium. The plate heat exchanger can be surrounded by a liquid phase of the first medium. A distribution device or distributor channel is arranged above the plate heat exchanger to introduce the first medium to the encased area. The distribution device has at least one outlet opening oriented downwards through which the liquid first medium is introduced to the encased area. A conducting device is arranged below the distribution device and conducts the liquid first medium exiting the at least one outlet opening.

1 . A heat exchanger for indirectly exchanging heat between a first medium and a second medium, comprising:
 a shell, which surrounds a shell space for receiving the first medium, and   at least one plate heat exchanger, for indirectly exchanging heat between the two media,   the at least one plate heat exchanger being arranged in the shell space such that it can be surrounded with a liquid phase of the first medium that is located in the shell space, and   a distributing device, in particular in the form of a distributor channel, which is in flow connection with an inlet on the shell, and which is arranged above the plate heat exchanger in the shell space for introducing the first medium into the shell space, the distributing device having at least one, in particular downwardly directed, outlet opening, through which a liquid phase of the first medium can leave into the shell space, and   the heat exchanger having a conducting device, which is arranged under the distributing device and is designed for conducting the liquid phase of the first medium that is leaving the at least one outlet opening, characterized in that the at least one plate heat exchanger has an upper side, the conducting device being designed to conduct the liquid phase of the first medium away from the upper side and/or past the upper side.   
     
     
         2 . The heat exchanger as claimed in  claim 1 , characterized in that the conducting device is designed to conduct at least part of the liquid phase that has left the at least one outlet opening in a first spatial direction into a second spatial direction. 
     
     
         3 . The heat exchanger as claimed in  claim 2 , characterized in that the second spatial direction differs from the first spatial direction, in particular the second spatial direction having a greater horizontal component than the first spatial direction, and in particular the first spatial direction running along the vertical from the top downward. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , characterized in that the at least one plate heat exchanger has first heat exchanging passages for receiving the first medium and second heat exchanging passages for receiving the second medium, so that heat is exchangeable indirectly between the two media, and in particular the first heat exchanging passages being in flow connection with the shell space by way of outlet openings on the upper side of the at least one plate heat exchanger, so that the first medium can leave through the outlet openings into the shell space. 
     
     
         5 . The heat exchanger as claimed in  claim 1 , characterized in that the conducting device is designed to conduct the liquid phase of the first medium such that the liquid phase does not impinge on the upper side. 
     
     
         6 . The heat exchanger as claimed in  claim 1 , characterized in that the conducting device has at least one plate-shaped conducting element, in particular in the form of a baffle. 
     
     
         7 . The heat exchanger as claimed in  claim 1 , characterized in that the at least one conducting element has a curvature. 
     
     
         8 . The heat exchanger as claimed in  claim 6 , characterized in that the at least one conducting element has a convexly curved first side, which is facing the plate heat exchanger, and also a second side, which is facing away from the first side, is concavely curved and is facing away from the plate heat exchanger and/or facing the distributor channel. 
     
     
         9 . The heat exchanger as claimed in  claim 8 , characterized in that the at least one conducting element is arranged such that the liquid phase of the first medium that is leaving the distributor channel through the at least one outlet opening impinges on the second side and is guided along the latter away from the upper side and/or past this upper side. 
     
     
         10 . The heat exchanger as claimed in  claim 1 , characterized in that that the conducting device and/or the conducting element extends over the entire distributor channel along the distributor channel or just over a portion of the distributor channel. 
     
     
         11 . The heat exchanger as claimed in  claim 1 , characterized in that the at least one conducting element has a plurality of through-openings for the first medium. 
     
     
         12 . The heat exchanger as claimed in  claim 1 , characterized in that the shell space is designed to receive the first medium such that a liquid phase of the first medium forms a bath surrounding the at least one plate heat exchanger with a filling height, the heat exchanger also having a separating unit forming a receiving space, for separating the gaseous phase from the liquid phase of the first medium in the shell space, the separating unit having at least one upwardly directed receiving opening for introducing into the receiving space first medium falling down from the distributor channel, and the upwardly directed receiving opening being arranged above the filling height or at the filling height, so that the gaseous phase of the first medium that is received in the receiving space can escape via the receiving opening into the shell space. 
     
     
         13 . The heat exchanger as claimed in  claim 12 , characterized in that the separating unit has a first side wall, facing the shell space. 
     
     
         14 . The heat exchanger as claimed in  claim 13 , characterized in that the first side wall has at least one distributing opening, the at least one distributing opening being arranged at least partially under the filling height, so that the liquid phase of the first medium can be introduced by way of the at least one distributing opening into the bath surrounding the plate heat exchanger, or in that the first side wall is formed as an overflow wall.