CS220179B1 - Bottom of coil exchanger (heat - Google Patents

Abstract

The invention relates to the lower part of a two-media or multi-media coiled heat exchanger for a cooled gas stream in a tube space with the direction of its flow from top to bottom and solves a design for separating the liquid phase from the condensing gas stream or. separating moisture bound in the gas. The core tube passing through the tube sheet or the dividing bottom with partial tube sheets is open for the purpose of separating the liquid phase from the cooled partially condensing gas stream and is provided with an exhaust pipe for discharging the gaseous phase of the partially condensing cooled gas; the lower end of the exhaust pipe passes through the bottom; the pipe for discharging the liquid phase of the partially condensing cooled gas, or the pipe for discharging the cooled non-condensing gas, also passes through the bottom.

Description

The invention relates to the lower part of a two-medium or multi-medium coil heat exchanger for a cooled gas stream in a tubular space with the purpose of flowing from top to bottom and solves a construction for separating the liquid phase from the condensing gas stream. separation of moisture-bound in the gas. The core tube passing through the tubesheet or sub-tubesheet is subdivided to separate the liquid Tase from the cooled partial condensing gas stream and is provided with an exhaust pipe to remove the gas phase of the partially condensed cooled gas; the lower end of the exhaust pipe passes through the bottom bottom; the conduit for the liquid phase of the condensed condensed quench gas, or the conduit for the vented non-condensate gas also passes through the bottom floor.

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The invention relates to the lower part of a two-coil or multi-media coil heat exchanger for a cooled gas flow in a Loru tube axis with the purpose of flowing from top to bottom and solves a design for separating the liquid phase from the condensing gas stream or separating moisture bound in the gas.

In the known exchangers, the lower tube sheet is connected to the shell of the exchanger and to the core tube, possibly also to the core end tube, embedded in the support cross. The core tube and the boar tube of the core are blinded to prevent flow inside the core. The lower part of the known heat exchanger embodiment is provided with a conduit for the removal of the cooled two-phase mixture. A separate separator is used to separate the liquid phase from this cooled two-phase mixture.

The design of the separator is based on the use of mostly tangential draft of the cooled mixture. Separation is effected by centrifugal and gravity forces with liquid phase and gas phase withdrawal.

The disadvantage is precisely that to separate the liquid phase from the two-phase cooled mixture a separate separator vessel including a connecting pipe is required. The lower part of the known two-medium or multi-medium wound heat exchangers is used for coarse separation of the liquid fraction. For this purpose, built-in areas, such as overflows or roofs, were placed in the space inside the bottom. The collected liquid is discharged from the bottom of the exchanger bottom and the gas is discharged through the throat located above the surface.

These disadvantages are overcome by improving the solution of the lower part of the coiled heat exchanger for the cooled gas stream in the tubular space with a sense of flow from top to bottom. consisting of a shell, a bottom bottom and a core tube.

SUMMARY OF THE INVENTION The core tube extending through the tube sheet or the sub-tube sheet is separated to separate the liquid phase from the cooled partial condensing gas stream and is provided with an exhaust pipe for evacuating the gas phase of the partially condensing cooled gas; the lower end of the exhaust pipe extends through the bottom bottom; the conduit for evacuating the liquid phase of the partially condensing quenched gas, or the conduit for the evacuating non-condensing gas, also passes through the lower bottom. The core tube may be tapered by a plate bottom through which an extension connecting the plate bottom to the partition bottom extends.

The advantages of the invention are that the use of a separate body of the separator and the associated pipework connection is eliminated, as well as the saving of built-up space. The compactness of the heat exchanger-separator unit is increased. Improvement of the separation ability is achieved by utilizing the core space for separation.

An exemplary embodiment of the invention is shown in the drawings, wherein Figure 1 shows the lower part of a two-fluid coil heat exchanger with a single-stage liquid phase separator from a partially condensing gas stream while cooling gas in the tubular space or water moisture condensed by quenching in the tubular space of the heat exchanger; Figures 2 and 3 show the lower part of a three-medium coil heat exchanger with a single-stage liquid phase separator from a partially condensing gas stream.

The lower part of the two-medium or multi-medium coil heat exchanger shown in FIGS. 1, 2 and 3 consists of a housing 1, a lower base Z, a core 3, a tube conduit 4 of partially condensing gas or tube tube 4 ‘of non-condensing gas. In the housing 1, a neck B is provided above the tube plate 5 for supplying coolant to the inter-tube space. In all examples, it is an exchanger in which the cooled gas stream flows in tube bundles 4 or 4 and 4 ‘from top to bottom, while the coolant enters the inter-tube space at the bottom of the neck B, moves up and leaves the exchanger at the top.

In the specific example of Fig. 1, the working space and the separating space of the lower part of the two-medium heat exchanger define a flat tube sheet 5 which is firmly attached between the casing 1 and the core tube 3. In order to separate the liquid phase from the cooled two-phase mixture open. The end tube of the core is replaced by a withdrawal tube 7 for evacuating the gaseous phase of the partially condensed quench gas, which extends into the open portion of the core tube 3 and passes through the bottom of the heat exchanger 2. In order to drain the liquid phase from the partially condensing cooled gas, a conduit 8 for liquid phase removal is provided in the lower bottom 2. The cooled partially condensing medium flows in the space of the tube bundle 4 and is injected into the space bounded by the flat tube sheet 5, the bottom bottom 2 and the lower part of the jacket 1 between the flat tube sheet 5 and the bottom bottom 2. The liquid phase exits via line 8;

In another particular example in Fig. 2, the bottom of the three-medium heat exchanger for separating the liquid phase from the partially condensing gas stream is made as in Fig. 1. However, the basic solution is completed with a bottom 9 with a conduit 10 tube bundle 4 '. One cooled gas stream partially condenses so that it is a liquid-gas phase mixture or bound condensing moisture in the cooled gas stream. This gas stream flows in the space of part of the tube bundle 4 and is injected into the separation space formed by the flat tube sheet 5, the bottom bottom 2 and the lower part of the jacket 1 between the flat tube sheet 5 and the bottom bottom 2. The liquid phase of this gas stream flows through line 8; the gas phase exits through the exhaust pipe 7. Further, a non-condensing cooled gas stream is discharged from the flat tube plate 5 from the space of another part of the tube bundle 4 ‘through the bottom 9 through a pipe 10 out of the exchanger.

The solution of the lower part of the three-medium heat exchanger in the example shown in Fig. 3 is based on the same principle as the previous solution in Figs. 1 and 2. The working and separating space separates here the dividing bottom 11 provided with partial tubesheets 12 and 12 '. The extension 14 connects the plate bottom 13 to the partition bottom 11. The extension tube 7 and the lower part of the core tube 3 are provided with a withdrawal tube 7 for the removal of the gas phase of the partially condensing cooled gas, which is fixedly connected to the bottom bottom 2. exchanger. The liquid phase of the partially condensing quenched gas is discharged via a line 8 passing through the bottom bottom 2. Under the partial tube sheet 12 nek, the non-condensing quenched gas is discharged from the space of another tube bundle 4 potrub via line 10 ‘.

As in the example of FIG. 2, one of the quenched gas streams partially condenses so that it is a liquid-gas phase mixture or bound condensation moisture in the quenched gas stream. This gas stream flows in the space of part of the tube bundle 4 and is injected into the separating space formed by the separating bottom 11 with the partial tubesheets 12 and 12 *, the bottom bottom 2 and the lower part of the jacket 1 between the separating bottom 11 and the bottom bottom 2.

In a similar embodiment as · in FIG. 3 may be ^one drain nozzle 14 and bottom plate · 13 with the open portion of the tube core 3 extended! and extends up to the partition bottom 11. This embodiment is not shown.

Claims (2)

SUBJECT Bottom part of a coiled heat exchanger for a cooled gas stream in a tubular space with a sense of top-down flow, consisting of a shell, a bottom bottom and a core tube, characterized in that the core tube (3) extends through the tube sheet (5) or dividing bottom (11) ) with partial tubesheets (12, 12 ') is opened to separate the liquid phase from the cooled partial condensing gas stream and is provided with an exhaust pipe (7) for evacuating the partially condensed cooled gas vapor phase; the line (8) for evacuating the liquid phase of the partially condensing refrigerated gas or the line (10) for evacuating the non-condensed non-condensing gas also extends through the bottom bottom (2). 2. The lower part of the coiled heat exchanger according to claim 1, characterized in that the core tube (3). is tapered by a plate bottom (13) through which the extension (14) extends, connecting the plate bottom (T3j to the partition bottom (.2)).