DE1519616C

DE1519616C - Device for evenly distributing the liquid in distillation columns

Info

Publication number: DE1519616C
Application number: DE19661519616
Authority: DE
Inventors: Lars Hugo Sandarne Norhn (Schweden)
Original assignee: Bergviks Hartsprodukter AB, Soderhamn (Schweden)
Priority date: 1965-11-12
Filing date: 1966-10-05
Publication date: 1973-06-20

Description

ein von der Mitte der Schale abwärts gerichteter Auslaßstutzen 13 mündet in ein koaxial zu dem Gefäß 12 vorgesehenes kleineres Gefäß 14, das die Aufgabe hat, die Flüssigkeitsströmung zu dämpfen. Die mit dem Gefäß 12 verbundenen, radial gerichteten Verteilerelemente bestehen vorzugsweise aus oben offenen, im wesentlichen horizontalen Rinnen 15. Die äußeren Enden der Rinnen 15 sind an einem entlang dem inneren Umfang der Kolonnenwand verlaufenden, ringförmigen Rohr 16 befestigt und münden in dieses. Das Rohr 16 ist an der Kolonnenwand befestigt und trägt den ganzen Verteiler. In der gezeigten Ausführungsform hat das Rohr 16 einen langgestreckt rechteckigen Querschnitt (Fig. 2), was jedoch keine notwendige Bedingung ist.an outlet connection 13 directed downwards from the center of the shell opens into a coaxial with the vessel 12 provided smaller vessel 14, which has the task of dampening the flow of liquid. With the vessel 12 connected, radially directed distributor elements consist preferably of open at the top, substantially horizontal channels 15. The outer ends of the channels 15 are on a running along the inner circumference of the column wall, annular tube 16 attached and open into this. The tube 16 is attached to the column wall and carries the whole distributor. In the embodiment shown, the tube 16 has an elongated one rectangular cross-section (Fig. 2), but this is not a necessary condition.

Wie in Fig. 4 gezeigt, kann jede Rinne 15 aus zwei Blechen 17 zusammengefügt sein, die je eine senkrechte Seitenwand der Rinne sowie den angrenzenden Teil des im Querschnitt etwa V-förmigen Rinnenbodens bilden. Die unteren längsverlaufenden Randpartien der Bleche 17 liegen flach aneinander an und sind durch Schweißen, Nieten oder dergleichen zu einem abwärts gerichteten Flansch 18 vereinigt, vorzugsweise mit Zwischenlage eines nachstehend beschriebenen Drahtnetzstreifens 19. Die oberen Kanten der Bleche 17 sind mit zickzackförmig angebrachten, beispielsweise V-förmigen Ausnehnehmungen20 versehen, durch welche die durch die Rinne strömende Flüssigkeit abfließen soll, um sich über die Außenseiten der Bleche 17 und von dort weiter über das herabhängende Drahtnetz zu verbreiten. Zweckmäßig ist jede Rinne ziemlich schmal, so daß zwischen den Rinnen ein großer freier Raum zum Durchlassen des aufsteigenden Dampfes verbleibt. Die verminderte Breite der Rinnen kann durch eine größere Tiefe ausgeglichen werden, und beispielsweise kann die Tiefe drei- bis fünfmal so groß wie die Breite sein.As shown in Fig. 4, each channel 15 can be made from two sheets 17 be joined together, each having a vertical side wall of the channel and the adjacent Form part of the channel bottom, which is approximately V-shaped in cross-section. The lower longitudinal ones Edge portions of the metal sheets 17 lie flat against one another and are welded, riveted or the like combined into a downwardly directed flange 18, preferably with the interposition of one below Wire mesh strip described 19. The upper edges of the sheets 17 are zigzag attached, for example V-shaped recesses20 provided, through which the liquid flowing through the channel is to flow away to itself to spread over the outer sides of the sheets 17 and from there on over the depending wire mesh. Each channel is expediently rather narrow, so that there is a large free space between the channels remains to let the rising steam through. The reduced width of the gutters can through a greater depth can be compensated for, and for example the depth can be three to five times as great be like the width.

Der an oder in dem Flansch 18 befestigte Drahtnetzstreifen 19 kann eine Breite von einigen Zentimetern und eine Grobheit von beispielsweise 8 bis 10 Maschen pro Zentimeter haben. Wie aus F i g. 2 hervorgeht, sind einige der untersten horizontalen Drähte des Netzes entfernt worden, so daß die unteren Enden 21 der vertikalen Drähte hervorspringen und die Überführung der Flüssigkeitsschicht in Tropfenform erleichtern.The wire mesh strip 19 fastened on or in the flange 18 can have a width of a few centimeters and have a coarseness of, for example, 8 to 10 meshes per centimeter. As shown in FIG. 2 It can be seen that some of the lowermost horizontal wires of the mesh have been removed so that the lower Ends 21 of the vertical wires protrude and the transfer of the liquid layer in Facilitate teardrop shape.

Die sektorförmigen Zwischenräume zwischen den Rinnen 15 erweitern sich zur Kolonnenwand hin in ausreichendem Maße, um kürzeren Rinnen 22 Platz zu bieten, die sich von dem tragenden ringförmigen Rohr 16 radial nach innen entlang etwa ²/3 der Länge der umgebenden Rinnen 15 erstrecken. Diese kürzeren Rinnen 22, die also mit Flüssigkeit von dem Verteilerrohr 16 gefüllt werden, sind an den radial innenliegenden Enden verschlossen, die von einem auf den längeren Rinnen ruhenden Ring 23 getragen werden. Im übrigen können die kürzeren Rinnen 22 genau die gleiche Ausbildung haben wie die längeren Rinnen haben.The sector-shaped spaces between the channels 15 widen towards the column wall sufficiently to provide space for shorter channels 22 which extend radially inward from the supporting annular tube 16 along approximately ^2/3 the length of the surrounding channels 15. These shorter channels 22, which are thus filled with liquid from the distributor pipe 16, are closed at the radially inner ends, which are carried by a ring 23 resting on the longer channels. In addition, the shorter channels 22 can have exactly the same design as the longer channels.

Die beschriebene Vorrichtung kann im Rahmen der Erfindung in verschiedener Hinsicht abgewandelt werden. Insbesondere können die Rinnen 15 und 22 durch vorzugsweise abgeflachte Rohre ersetzt werden, die entlang ihren oberen Kanten mit in zweckmäßigen Abständen angebrachten Auslaßöffnungen versehen sind, und das ringförmige Rohr 16 kann auch durch eine offene Rinne ersetzt werden.The device described can be modified in various ways within the scope of the invention will. In particular, the channels 15 and 22 can be replaced by preferably flattened pipes, those along their upper edges with appropriately spaced outlet openings are provided, and the annular tube 16 can also be replaced by an open channel.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1519 618

1 21 2

Device of the type mentioned above

Claim: create which can be produced more simply and inexpensively and which has a smaller space device for evenly distributing the requirements than the known device. In this case, liquid should be in distillation columns, in which the liquid is located over the entire cross-section of the packing and intermediate tray, with a distillation column. be evenly distributed,
below the intermediate floor and above the

Liquids built-in layers of packing material dissolve in a manner known per se in the dividers, the number of bottom parts of each cross-section, which taper downwards over the column cross-section, are distributed as overflow channels or radially directed distributor elements in a horizontally perforated pipe , have hanging wire mesh strips, on the underside of which there are drip tips, on the lower free edge of which one or more are attached, marked thereby- longitudinally running wires are removed,
net, that in a known manner in the For the already by the Austrian patent

Cross-section downwardly tapering bottom part 15 writing 187 514 known feature that the each radially directed distributor element (15,22) bottom part of each radially directed distributor element has a horizontally extending, hanging downwardly tapered cross-section, there is no wire mesh strip (19) on its lower independent protection claimed,
free edge one or more longitudinally extending The invention is the surprising finding

Wires are removed. 20 based on the fact that it is not necessary that the a

separate drainage points within one level in two

Coordinate directions have a minimum distance, but that only a certain distance with respect to a single coordinate - namely to

The invention relates to a device for maintaining the distance between the individual distributors of the liquid in distillation column elements in which fillers and intermediate floors need to be found. In the other, radial coordinate direction, Such a minimum distance is not required with below the intermediate floor and above of the filler layers built-in liquid borrowed, so that the price, production and keitsverteilern, which have a number of spatially favorable training over the colon with a distributor wire cross-section distributed, can be selected as overflow channels or nets. The radial extension perforated pipes formed distributor elements of the distributor elements leaves enough space have drip tips on the underside for gas to pass through. Also small amounts of reflux are brought. are through the wire mesh strips over their

In a known device of this type (uniformly distributed throughout the entire length see Auslegeschrift 1 110 613 below), in which the liquid protruding, downward and pointed currents are divided into individual streams, each with the same liquid end of the transverse wires The individual stripes divide the liquid flow into a drop point at a maximum distance from each other, the large number of individual drops,
not greater than three times, preferably not 40 Further features and advantages of the invention greater than twice the main dimension of the input from the following description, in individual packing, and a minimum distance that is not smaller than the one embodiment shown in the drawing as the major dimension of each is explained in detail. It shows
Is packing. In this known device, Fig. 1 is a longitudinal section through a central one

In other words, it is necessary, in two to one- 45 part of a distillation column,

other perpendicular directions within a plane F i g. 2 shows an axial section on a larger scale

a minimum distance between the drip points through part of the distributor,
to keep. As a result, the production of the previous fig. Figure 3 shows a sector of the distributor from above, relatively expensive and complicated, and also on a larger scale and
the drip tips as a result of their mutual 50 F i g. 4, a portion of a manifold element can occupy a considerable amount of space when arranged. perspective representation.

In Fig. 1 of the drawing, 5 denotes a department to facilitate the work the reflux over the column cross section of a cylindrical distillation column. One cut on the undersides of the distributor elements, not shown layer of packing is on a To attach sawtooth-shaped metal sheets, with the 55 horizontal sieve sheet attached, and in some Liquid from the downwardly directed tooth tips distance below it is a so-called intermediate drain. Particularly in the case of distillation with a small base 7 with specially shielded openings 8 However, this device has less reflux rates for the passage of the rising steam shown effectively as the liquid then seen. The liquid collected on the bottom 7 is not flows evenly over with a relatively large amount of 60 through pipes 9 down into an under teeth attached to the gaps. At the bottom mounted shell 10, in which the vigorous refluxes, the liquid in turn becomes distilling liquid through an externally introduced distillation liquid can be passed into a number of tube 11 corresponding to the number of teeth. The shell 10 and divided by partial flows, which are further parts of the distributor in F i g. 2 and 3 Pointed hanging elements are also shown in more detail.

the must. In the latter case, the construction of the shell 10 is at the top of a zyündri-

relatively complicated and bulky. see vessel 12 attached, from which the

The invention has for its object to extend a manifold described below, and