KR20130004161A - Lamellar separator with catch basin - Google Patents

Abstract

The present invention is a lamella separator 100 that separates liquid droplets from a liquid-charged fluid, spaced apart from each other, therebetween forming a flow channel for delivery through the liquid-charged fluid, A sump located under the lamella profiles to receive liquid separated from the liquid-charged fluid, with at least two essentially vertically oriented lamellar profiles 30 at which the droplets of liquid at the walls separate. (with a catch basin 40), the sump 40 has a at least one partition wall 45 that divides the sump 40 into a plurality of regions 40a and 40b. It is about.

Description

Lamellar separator with drain box {LAMELLAR SEPARATOR WITH CATCH BASIN}

The present invention is a lamellar separator that separates liquid droplets from liquid-charged fluid, spaced apart from each other, and forms a flow channel for delivery through the liquid-charged fluid therebetween. At least two essentially vertically oriented lamellar profiles from which liquid droplets separate from the wall, and a catch basin located at the lower end of the lamella profile to receive liquid separated from the liquid-charged fluid. It has a lamellar separator which has.

Such lamella separators, also known as lamellar droplet separators, are known in the art and are used in various processes for separating liquid droplets from liquid-charged fluids, especially gas streams. In power plants such as solar or nuclear power plants, the effective separation of liquid droplets from wet steam determines the thermal efficiency of the power plant. During intermediate superheating of the steam after expansion in a high pressure turbine, it is thermodynamically advantageous to dry the wet steam and feed it to the condensation circuit before overheating in the intermediate superheater. In a so-called water separator superheater, such lamellar separators are used to recover moisture from liquid-charged fluids, in particular wet steam. The associated lamella separators comprise a plurality of (ie at least two) thin wall profiles, called lamella profiles, which are located parallel to each other and define the lamella separation space, and the droplets of liquid are separated from the fluid passing over the walls. For example, see GB 1 408 928A regarding the prior art.

For example, the present invention relates in particular to lamellar separators having a vertically oriented lamellar profile, in which separated droplets of liquid gather and flow down due to gravity and collect as liquid separated in a sump located at the lower end of the lamellar profile. These lamellae separators, known in the art, separate lamellas because the liquid in the sump is, in spite of the drainage, vortexed to be suspended or delivered by the fluid stream flowing through the lamella separator, or it is vortexed to be delivered and released therefrom. There is a problem of rotating upward into space. There is a problem with immersion of the flow of fluid into the sump and thus with an upwardly oriented side flow diagram of the fluid stream into the lamella space opposite to the direction of drainage of the droplets separated from the sump, so that these liquid drops are impaired. It cannot be drained downwards without, but rather away from the lamellae surface.

It is therefore an object of the present invention to define a lamella separator of the above-mentioned type, in which the separated liquid located in the sump becomes calm, does not swirl or at least swirl less vigorously so that the liquid does not fall back from the lamellae.

This object is achieved by the sump having at least one partition which divides the sump into a plurality of regions.

A lamellae separator separating liquid droplets from a liquid-charged fluid, spaced apart from each other, forming a flow channel (lamellar passage) therebetween for delivery through the liquid-charged fluid, at least two of which the liquid droplets separate from the wall thereof. Two essentially vertically oriented lamellae profiles and a lamellae separator having a sump located at the lower end of the lamellae separation space for receiving liquid separated from the liquid-charged fluid. It is proposed that the sump has at least one partition wall that divides the sump into a plurality (ie at least two) regions.

Due to the geometrical division into multiple regions or chambers of the sump using one or more bulkheads, the separated water in the sump oscillates, which is a point that can reduce the efficiency of the lamella separator, and the excess flow of liquid from the fluctuating water surface. It is suspended and conveyed by the fluid stream and is prevented from propagating upwards back into the lamellae separation space. The surface of the liquid collected in the sump can thus remain calm and / or calm even at high flow rates of the fluid flowing through the lamella separator, thus preventing harmful vortices and upward lateral flow of water levels in the lamella space. Can be reduced. Since the partitions or partitions are in the flow path of the liquid-charged fluid, they or they are used as obstructions, where the fluid stream is blocked or deflected, so that the lateral flow and the fluid stream upwards between the lamellar separation space and the liquid level connected thereto Locking is prevented. Furthermore, by improving the drainage of the collected liquid, the level of the sump can advantageously be kept low in operation. Therefore the pass-flow can advantageously increase.

With an advantageous refinement of the invention, the at least one partition is oriented essentially vertically extending from the bottom of the sump to at least the lower edge of the lamella profile. In other words, the partition extends from the sump flow of the sump to at least directly into the lamellae separation space. However, this may also extend into the lower region of the lamella profile beyond the lower edge. In this way, the separated liquid in the sump can remain calm and / or calm enough. The closure of the fluid stream of the sump and thus the upward lateral flow in the lamellae space is thus reduced.

It has been proved particularly advantageous that at least one partition wall is located transverse to the flow direction of the liquid-charged fluid flowing through the lamella separator. The partition plane of such a partition is, for convenience, essentially oriented perpendicular to the lamella profile.

A preferred refinement is that at least one separate drain is provided for each area of the sump formed by the partition.

According to an alternative preferred refinement, it is proposed that a common drainage is provided for two adjacent regions of the sump separated by the partition.

Furthermore, it is advantageous for the partition to have at least one passage in the area of the sump bottom connecting the two adjacent areas separated by the partition. In this way, different levels of interconnected regions can be the same. Furthermore, only one of the regions connected through the passageway may be provided with drainage, as will be described in more detail later in connection with the figures.

According to another preferred refinement, the lamella profile is at least approximately wavy and oriented at least approximately parallel to each other, and a plurality of baffles (pointing opposite to the flow direction) project into the flow channel from at least one of these lamella profiles. Thereby forming a catch pocket pointing opposite to the flow direction to separate the liquid droplets. In particular, a plurality of undercut plates (pointing in the flow direction) protrude from the same labella profile to form an undercut pointing in the flow direction, the undercut plates on their outer sides facing away from the lamella profile. By a defined value, it is proposed to form a labyrinth separator system for separating liquid droplets, overlapped by baffles pointing opposite to the flow direction. Such a lamella profile will be described in more detail later in connection with the drawings. The lamellar separator with the lamellar profile thus formed has a particularly large degree of separation, resulting in a large catch capacity stream for the separated liquid, where the sump described above is very suitable.

The invention will also be described by way of example on the basis of three preferred exemplary embodiments shown in the drawings, in which identical and / or functionally identical components are identified by the same reference numerals.

1 shows a partial cross-sectional view of a lamella separator according to the prior art.
2 shows a side view of a lamellar separator.
3 shows a partial cross-sectional view of three exemplary embodiments of lamellar separators according to the present invention.
FIG. 4 shows a plan view of the lamella profile of the lamella separator of FIG. 3.

1 shows a bottom bottom region of a lamella separator 100 according to the prior art. The lamella separator 100 is surrounded by the housing 10, and the drainage tank 40 is integrated in the housing 10. The lamella separators 100 have vertically oriented lamella profiles, parallel and spaced apart from one another, these profiles together form a lamellae separation space, of which only the bottom of a single lamella profile 30 can be seen in FIG. 1. . The lower edge of the lamella profile 30 is identified with 31. The liquid-charge fluid flows through the lamella separator 100 in the defined through-flow direction S, and the liquid droplets are separated from the fluid passing over the wall surface of the lamella profile 30 in a known manner. The separated liquid droplets gather and drain down due to gravity into a sump provided for this purpose. The collected liquid F may be drained through a drain 43 (shown in dashed lines) located at the bottom of the sump 44.

In the lamella separator 100 shown in FIG. 1, a partial stream of liquid-charged fluid may reach the surface 41 of liquid F collected between the lower edge 31 of the lamella profile 30. May be poured into the sump 40. The flow direction of this partial stream is identified by T. If the partial stream from the sump 40 deflects upwards between the lamella profiles 30, it will move counter to the separated liquid droplets, draining down into the sump 40 due to gravity. The liquid droplet is released from the lamellae surface as intended by the partial stream which is discharged upwards with the flow direction T and not collected in the sump 40.

2 shows a side view of a lamella separator according to the invention, identified in its entirety by 100. The lamella separator 100 has a housing 10 that encloses a lamella separation space with a plurality of essentially vertically oriented lamella profiles 30 (not shown) spaced from each other. Liquid droplets flowing through the lamella separator 100 (so-called horizontal inflow and through flow) in the through-flow direction (S) defined by the liquid-charged fluid, in particular a gas or vapor stream, Are separated in a known manner on the wall of the lamella profile 30. Collected and separated liquid droplets are drained into the sump 40 provided for this by gravity, and the sump 40 may be formed as a catch shell. Drain 40 may be integrated into housing 10 or may be formed as a separate component. The lower edge 31 (not visible) of the lamella profile 30 is shown in dashed lines. The entry area of the liquid-charged fluid into the housing 10 is identified as 20, which is usually implemented with a perforated plate. The drain nozzle of the sump 40 is identified as 50.

3A) shows a first exemplary embodiment of a lamella separator 100 with a sump 40. The following description applies similarly to each of the second and third exemplary embodiments of lamellar separators 100 'and 100 ", shown in Figures 3b) and 3c). Drain 40 is a lamellar. It is integrated into the housing 10 of the separators 100, 100 ′ and 100 ″ and extends over the entire width and preferably also the depth of the housing 10. The partition 45 is located approximately in the middle of the width of the inner chamber of the sump 40, which extends from the bottom of the sump 44 to the lower edge 31 of the lamella profile 30 and to the sump 40. ) Extends over the entire depth. In this exemplary embodiment, the partition wall 45 divides the sump 40 into two regions, chambers 40a and 40b. Through this division, the surface 42 of the liquid F collected and separated from the sump 40 may remain at a high flow rate of fluid flowing through the lamella separators 100, 100 ′ and 100 ″. A calm state can be maintained, thus reducing harmful vortices Due to the high possible flow rate of the fluid, the partition wall contains a corrosion resistant material, preferably a metal.

By splitting into two regions 40a and 40b of the sump 40, the drainage of the collected liquid F is further improved (released without interference), so that the level can advantageously remain low in operation. In the first preferred embodiment of FIG. 3A), the two regions 40a and 40b have drains 43a and 43b at the sump bottom 44, respectively. In the second exemplary embodiment of FIG. 3B), a drain 43 is provided only in the left region 40a or possibly in the right region 40b. Furthermore, the partition wall 45 has a passage 46 in the region of the basin bottom 44, which passage 46 is at the surface 42 of the liquid F that collected the separated regions 40a and 40b. Connect to each other. In the third exemplary embodiment of FIG. 3C), a common drain 43 is provided for the two regions 40a and 40b separated by the partition 45 at the sump bottom 44, the holes 43. In each case extends in the middle of the partition wall 45. If, as in the first exemplary embodiment of FIG. 3A), separate drains are provided in the individual regions 40a and 40b of the sump 40, these holes are provided in the second according to FIGS. 3b) and 3c). And as in the third exemplary embodiment, may have smaller dimensions than when only one common drain is provided. The number of drains to be provided can be adjusted according to the structural boundary conditions accordingly.

Particularly preferred lamellar profiles will be described later in connection with FIG. 4, which is used in lamellar separators 100, 100 ′ and 100 ″ according to the invention and has a low pressure loss and particularly high separation. Single lamellar profile 30 ) Is shown in plan view along line IV-VI as indicated in figure 3a) Preferably the same forming lamella profile (not shown) is located at a distance a parallel to the lamella profile 30 Two adjacent lamella profiles 30 form a flow channel between them and deliver them through the liquid-charged fluid in a predefined flow direction S.

The lamella profile 30 has a substantially wavy shape in the flow direction S. A plurality of baffles 31 protrude in opposite directions to the flow direction S on both sides of the lamella profile 30 and form a catch pocket 32 that points against the flow direction S to the liquid droplets. . Furthermore, a plurality of undercut plates 33 pointing in the flow direction protrude from both sides from the lamella profile 30 and form an undercut 34 pointing in the flow direction S. FIG. The undercut 33 pointing in the flow direction S overlaps the baffle 31 pointing in the opposite direction to the flow direction S by a defined value on its outer side away from the lamella profile, thus providing an effective labyrinth for liquid droplets. A common collection chamber (catch pocket 32 + undercut 34) is formed for receiving the liquid separated from the separator system. The undercut plate 33 is only implemented for the flow direction S in the first half of the lamella profile 30, in particular achieving a very high degree of separation. Furthermore, an undercut plate 33 having a reduced length in the flow direction S is formed so that the undercut and the common vowel chamber have a reduced capacity in the flow direction S. FIG.

The terminal edges of the baffle 31 and / or the undercut plate 33 are provided with an embossed structure P at the overlapping area between the undercut plate 33 and the outer baffle 31, so that the defined contact points overlap the area. Is formed. As shown, the lamella separator 30 is formed from a plurality of metal cast parts welded to each other.

Claims (10)

As a lamellar separator 100 for separating liquid drops from a liquid-charged fluid,
At least two essentially vertically oriented lamellar profiles 30 spaced apart from each other, forming flow channels for delivery through the liquid-charged fluid therebetween, the liquid droplets being separated at the walls thereof And,
Have a catch basin 40 located below the lamella profiles to receive liquid separated from the liquid-charge fluid,
Lamellar separator (100) characterized in that the sump (40) has at least one partition (45) for dividing the sump (40) into a plurality of regions (40a and 40b). The method according to claim 1,
Lamellar separator (100), characterized in that the bulkhead (45) is oriented essentially vertically and extends from the sump bottom (44) to at least the lower edges of the lamella profiles (30). The method according to claim 1 or 2,
Lamellar separator (100), characterized in that the partition (45) is located in the flow path of the liquid-charged fluid, forming an obstacle of flow. The method according to claim 3,
Lamellar separator (100), characterized in that the partition wall (45) is located transverse to the flow direction (S) of the liquid-charged fluid. The method according to any one of claims 1 to 4,
A separate drainage device (43a, 43b) is provided in each region (40a and 40b) of the drainage tank (40) formed by the partition wall (45). The method according to any one of claims 1 to 4,
A lamella separator (100), characterized in that a common drainage (43) is provided in two adjacent regions (40a and 40b) of the sump (40) separated by the partition (45). The method according to any one of claims 1 to 4,
In the region of the sump bottom 44, the partition 45 has at least one passage 46 connecting two adjacent regions 40a and 40b separated by the partition 45 to each other. Lamellar separator 100 characterized in that. The method of claim 7,
Lamellar separator (100), characterized in that the drainage (43) is provided only in one of the regions (40a and 40b) connected to each other via the passage (46). The method according to any one of claims 1 to 8,
The lamella profiles 30 are wavy and oriented parallel to each other, and a plurality of baffles 31 protrude from the at least one of these lamella profiles 30 into the flow channel to be separated. Lamellar separator (100), characterized by forming a catch pocket (32), opposite the flow direction (S), for liquid droplets. The method according to claim 9,
A plurality of undercut plates 33 protrude from the same lamella profile 30 to form undercuts 34 pointing in the flow direction S and undercut plates 33 pointing in the flow direction S. FIG. ) Is superimposed by baffles 31 pointing opposite to the flow direction S by a defined value at their outer sides facing away from the lamella profile 30, for the liquid droplets to be separated. Lamellar separator (100), characterized in that a labyrinth separator system is formed.

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