DE1806544C - Exchange tray for heat and mass transfer columns - Google Patents

Description

3. Several aus ao finduna arranged one above the other;

of hearing.

F i g 1 shows a longitudinal section through a Ko lonne with several exchange trays according to the

Exchange floor according to claim 1 or 2, characterized in that its upper walls on one central, axially adjustable and rotatable about its axis rod (26) are attached.

F i g. FIG. 2 shows a longitudinal section through a column with a further exemplary embodiment of FIG Exchange floor.

The in F i g. The column tray shown in FIG. 1 consists of an upper conical wall 2 and a lower frustoconical wall 3. The cone axes of the walls 2 and 3 match with the axis of the cylindrical column wall 1.

Lots of mass transfer masters. contain horizontally 30 The conical wall 2 widens after arranged and provided with openings plate-bottom, while the frustoconical: Wall 3-shaped exchange bottom, in which the exchange _s j _cn expands upwards and in its center a circle between liquid and gases in the has a substantial da- shaped opening 3 α . The cone angle made by that one, standing on the ground. Walls 2 and 3 are ¹ X) ⁰ . so that the areas of the liquid ₃₅ walls 2 and 3 ^{kept constant by the inflow and outflow;} at an angle equal to one another due to finely divided gas flows through tjo °.

is flowing. Such floors have the disadvantage that the wall 2 is at its upper end on a

is mounted on them, in particular at locations where the Rj _ng 4, which is low in velocity of the liquid by means of a screw 5, deposits will _e can be clamped i _ner rod 6, which can form in the gene, the regularity From ₄₀ axis of the column 1 lies. The lower edge of the barter affect significantly. Wall 2 has numerous slots 7.

It is also from the French patent specification The wall 3 is on its outer edge with a

I 160 730 already known a replacement tray, the ring 8 connected, which is held at several points of its circumference from a lower, opposite the column wall with a vertical bolt 9 in a sealed, downward narrowing, at ₄₅ height, which is held by means of the Nuts 11 and center open, frustoconical wall and one 12 can be adjusted. A seal 13 is inserted between the ring 8 and the coaxial upper column wall from top to bottom, extending into the lower wall from above, for example through the opening

gel-like wall, wherein between its 3 _a · a wall 3 ', which corresponds to the wall 3, the edge and the first-mentioned wall, an opening ₅₀ flowing out liquid meets the upper side of the wall. In this known floor, the wall is 2 and flows down on it; it flows entire upper conical wall with holes so then on the top of the wall 3 downwards, in that the up on the top of this wall _to j _out of the opening 3 out of the ground again α hertreffende liquid through these holes passing _from,

flows downward, so that the contact between ₅₅ the vapors or gases rise "by the liquid and vapor öffnu .: substantially in the range 3 _a f _{un au} d flow through the annular gap between the downwardly flowing liquid outside the
Exchange bottom takes place. One such exchange is
but irregular and difficult to control.

In order to avoid these disadvantages, there is fluid that passes through at the exit. The annular gap between the exchange floor for heat and mass transfer column walls 2 and 3 can be turned downwards by adjusting the tubs, consisting of a lower wall 3, which is sealed off from the duct 2 along the rod 6 or by adjusting the column wall by means of nuts 11 and 12, any narrow, frustoconical open in the middle is changed. i. As a rule, you will adjust this gap wall and an upper coaxial to it, from above 6 ₃ so that on the top of the wall 2

the walls 2 and 3, as well as through the slots 7 upwards and also penetrate the through this gap and these slots down

widening downwards into the lower wall
projecting, conical wall, with between the edge and the first-mentioned wall

an amount of liquid is dammed up to a certain level 14. With greater amount of steam or. Gas not only increases the liquid

mirror, but due to the conical shape of the wall 2, the liquid surface increases at the same time. The accumulated amount of liquid and its surface are therefore largely matched the vapor load. The rising vapors or gases do not only come with the liquid inside the accumulated amount of liquid, but also while the liquid is flowing out in touch from one floor to another. The result is a very intense and even one Exchange between the liquid and the gases.

The arrangement according to FIG. 2 differs from the arrangement according to FIG. 1 essentially in that a cylindrical edge 24 or 25 connects to the edge of the upper conical wall 22 and to the edge of the lower frustoconical wall 23 in such a way that the edge 25 encloses the edge 24. In this case Schlit'.e27 are provided in the cylindrical part 24. By pushing the two cylindrical parts 24 and 26 into one another, the annular gap between the upper and lower part of the bottom can be reduced to a very small cross-section.

To remove deposits on the outer surface of the wall 22 and the inner surface of the wall 23 easily To be able to eliminate, a stripping plate 30 is attached to the column wall 21 and on the inside of the Edge 24 a stripping plate 31 is attached, the stripping edge of the plate 30 in its shape of the surface shape of the wall 22 and the wiping edge S of the metal sheet 31 of the surface shape of the wall 23 is equivalent to. By rotating the rod 26 to which the wall 22 is attached, both the top the wall 22 and the upper side of the wall 23 are scraped off by the scrapers 30 and 31, respectively.

The rod 26 is adjustable in its longitudinal direction.

The invention also allows the passage gap to be different on different floors make it big and put him in during the procedure

wide boundaries to change. For this purpose, the upper wall 2 of each floor is connected to the rod 6 fastened by a clamping device that makes it possible to to adjust the wall opposite the rod 6/26. If then on the same rod 6/26 the

ao upper walls 2 of several floors are attached, by moving the rod, the passage gap on all floors can be changed at the same time, .this can, however, by appropriately clamping the individual upper walls of the floors

»5 Gaps on the individual floors made different sizes will.

1 sheet of drawings

Claims (2)

Patent claims: : an opening is present, according to the invention dio upper. Wall opposite the lower wall axially adjustable. Due to the adjustability of the upper wall, the liquid-gas exchange in the area between the edges of the upper and lower walls can be easily and precisely regulated. In order to be able to easily remove any deposits on the top of the upper wall, you can use I. Exchange tray for heat and mass transfer coke, consisting of a lower, sealed against the column wall,
downwardly narrowing, in the middle open, frustoconical wall and one to it
coaxial upper, from top to bottom widening, protruding into the lower wall, io the column wall a corresponding wiper conical wall, being bound between the edge. In the case of exchangeable floors arranged one above the other, the upper walls of these floors can be connected to a common central, axially adjustable and rotatable about its 15 axis rod. The following figures are provided for explanatory purposes and the first-mentioned wall has an opening, characterized in that that the upper wall (2,22) is axially adjustable relative to the lower wall (3, 23) 2. Replacement floor according to claim 1, characterized characterized in that with the column wall (21) a stripper (30) for the top of the upper Wall (22) is connected.