The element of the random packing for packed columns

 

(57) Abstract:

The invention relates to the chemical, refining and other industries and can be used when performing heat-exchange processes, such as distillation, absorption, etc. in the respective apparatuses. The technical problem solved by the invention is to increase the intensity of heat and mass transfer and reduce costs in manufacturing. The solution of a task carried out by the fact that the element of the random packing for Packed columns containing thin-walled perforated ring with flanging and expanded metal, bent into the ring, curved petals, according to the invention, the flange is made with shaped, symmetrical, for example, a toothed profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging. 3 Il.

The invention relates to the chemical, refining and other industries and can be used in the implementation of heat and mass transfer processes, such as distillation, absorption, etc. in the respective devices.

From level technicalities etc. on the surface which made holes in the form of slots, with a folded inside the housing petals having a different shape, for example curved (see an overview of Foreign nozzle devices of mass transfer equipment. M. Containertypes, 1982, S. 4 5 Fig. 3, 4).

For all elements of the above nozzles, related by way of laying to irregular (bulk) nozzles typical (depending on the shape forming elements is cylindrical, semi-cylindrical, a saddle-node) various hydraulic resistance and the efficiency of mass transfer.

A prototype of the invention selected nozzle according to the patent of Russian Federation N 2027504, class B 01 J 19/30, 1995, containing thin-walled perforated ring with flanging and cutting elements in the form of bent inside the ring bent around the circumference of the petals.

The disadvantages of the prototype is that the packing layer when working in the field of flanging stagnant zones are formed, due to the lack of flanging any holes or shaped protrusions. This reduces the efficiency of the nozzle.

The technical problem solved by the invention is to increase the intensity of heat and mass transfer and the regular nozzle for Packed columns, containing thin-walled perforated ring with flanging and expanded metal, bent into the ring, curved petals, according to the invention the flange is made with shaped, symmetrical, for example a toothed profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging.

The presence of flanging in the form of shaped elements, their shape and arrangement increases the contact surface and the living section, helping to increase the effectiveness of interaction between phases, increasing the magnitude of the interfacial friction and the degree of turbulence, resulting in the proposed nozzle can operate at much higher loads. In addition, the offset figure of opposite flanging ring half step, allows to reduce significantly in the manufacture of material consumption due to the economical cutting of the blank.

In Fig. 1 shows a nozzle, a top view; Fig. 2 is a longitudinal section; Fig. 3 scan head.

The nozzle ring contains 1 flanging 2, the contours of which are made with curly, for example a toothed profile, forming a figure symmetric surname elements of one of the flanging. The side surface of the ring 1 has a counter located triangular petals 4, the base of the petals combined into a single number, between every pairs of petals jumper 5. Petals 4 and jumpers have 5 holes 6 with the same or different diameters. Petals 4 smooth radius bent to the inside of the ring 1, after bending of the petals on the line section, which coincides with the hypotenuse, there is a gap of 7 with a width "a". Bent petals 4 jumper 5 in plan form a semiring 8.

The nozzle operates as follows. After filling apparatus nozzle and feed him interacting phases, the liquid phase, passing through the nozzle, intensively sprayed, is redistributed to the diameter of the device, interacting on the surface elements of the nozzle with the rising steam (gas) phase.

Increased by curly flanging, the specific surface of the nozzle, the optimal location of figured elements flanging (prekrytie forward stroke gas along a generatrix of the cylindrical surface of the ring)6 promotes more intensive teplomassoobmena due to the constant updating of the interfacial surface. In the manufacture of the nozzle, the offset of the figure elements of the opposed curved edges (which are then transformed into flanging).

The nozzle of the proposed elements has a higher efficiency and a greater range of work load, as well as a higher fill factor volume of the apparatus.

The element of the random packing for Packed columns containing thin-walled perforated ring with flanging and with an expanded metal bent into the ring, curved petals, characterized in that the flange is made with curly symmetric, such as a gear, a profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging.

 

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