Regular nozzle for heat and mass exchange and separation apparatus

FIELD: oil and gas industry.

SUBSTANCE: regular nozzle comprises stack of sheets provided with sloping corrugations or projections. The perforated members are interposed between the sheets. The sheets and/or the perforated members interposed between them are provided with flow swirlers that define perforation. The axes of the swirlers are vertical. The swirlers can be defined by woven grid. The members may be provided with corrugations that intersect with the corrugations or projections on the sheets. The corrugations of the members are smaller than corrugations or projections on sheets. The swirlers are made of slots, and members are interposed between the sheets in pair.

EFFECT: enhanced efficiency.

4 cl, 10 dwg

 

The invention relates to constructions of regular nozzles, which are used in the processes of distillation, absorption, adsorption of natural or petroleum gas, as well as mixers for liquid, gas or liquid flow in the separation device, the contact elements and may find application in technological processes of oil and gas industry.

Known regular nozzle for U.S. patent No. 4643853, NCI 261-112 from 17.02.87, which is made of a vertically installed corrugated sheets in contact protruding corrugations with each other. The corrugations on each of the sheets are located on the diagonal and is made with holes or notches along or across the corrugation. The disadvantage of this nozzle is the lack of efficiency of heat and mass transfer and separation and limited specific surface area of the nozzle.

Closest to the present invention is a structured packing according to the patent of Russian Federation №2188706, CL 01 J 19/32, 01 F 3/04, 15.01.2001, prototype, consisting of a vertically mounted obliquely corrugated sheets in contact protruding corrugations to each other, in which each corrugation of the sheet along the edge provided with notches between which the flute back arched with the formation of three-dimensional display elements arranged in parallel lines that make up the edges of the corrugation angle of 60 to 90�B0; and between the corrugated sheets are installed perforated sheet or grid.

The disadvantages of this structure should be attributed to the lack of efficiency of heat and mass transfer and separation, limited specific surface area and design complexity.

The aim of the invention is to increase the efficiency of heat exchange and separation of liquid from gas, increasing intensification of mass transfer by increasing the specific surface turbulence (twist) flow inside the nozzle and the simplification of the structure.

This objective is achieved in that in the regular nozzle for heat and mass transfer devices containing package of the inclined corrugated sheets or tiles with inclined projections directed at the surfaces of the sheets facing each other in intersecting directions, with possibility of installation between sheets of perforated elements, sheets and(or) adjacent elements have microcavities streams forming the perforation, and the axis of microamerica threads oriented in the vertical direction, that micronavigation flows formed the warp and the weft of a woven mesh, in which the cross-section of a basis is more cross-sectional duck, and the step between the base oriented towards the vertical, more spacing between the weft, which items have corrugations intersecting with corrugations or protrusions sheets with the dimensions of less bumps or ridges sheets, that micronavigation made in the form of pairs of slots, divergent from the plane of arrangement and that the elements are installed in pairs.

The applicant and the unknown authors of the regular design of nozzles, in which the efficiency of heat and mass transfer, separation, increasing the specific surface and the simplification of the structure was achieved in a similar manner.

Figure 1 presents a view of the nozzle in section; figure 2 is a top view; figure 3 and 4 shows a view of the plane alternating sheets; figure 5 and 6 - plane alternating elements; figure 7 and 8 is a view of the paired micronavigation threads, forming a perforated sheets or elements; figure 9 and 10 - micronavigation formed threads (the warp and the weft) woven mesh.

Structured packing consists of packages 1 and 2, deployed in the plan to each other 90° (figure 1). Packages 1, 2 are composed of an inclined corrugated sheets 3 and 4, the corrugations or projections 11 which are in planes that are facing each other, overlap. Leaves 3, 4 is equipped with microcavities 7 or 8 on opposite sides of the sheet, forming a perforation. Between the sheets 3 and 4 are the elements 5 and 6 with corrugations 12 and microcavities 7 or 8, and geometrical dimensions of the corrugation 12 is less than the geometric dimensions of the corrugation 11 sheets 3, 4. Figure 9, 10 shows micronavigation 13, 14 formed by the base 9 and the weft 10, step t between the base 9, orientirovannoi in the vertical direction, more step s between the weft 10, with the transverse size of the canvas more than the lateral dimension of the duck.

The nozzle operates as follows.

The liquid phase is applied evenly to the upper end of the nozzle and flows down in the form of a film on the surface of leaves and elements, interacting with an ascending stream of gas. The upward flow of gas passing through micronavigation, breaks the film of flowing liquid, irrigating the surface of the nozzle. As the swirlers are located throughout the structure of the nozzle, is almost complete irrigation of the surface of the leaves. Micronavigation create turbulence gas-liquid flow, forming mikrozavihreniya, evenly distributing gas and liquid flows around the section of the nozzle, intensificar thereby the process of mass transfer. In addition, the distance between the edges of the perforation of swirlers (wefts) is determined by the wettability of the surface between them, due to capillary forces is stretching liquid droplets horizontally, and the reduction of distance between elements improves the wettability and thereby increases the contact surface.

Between the rows of microamerica and(or) the basis of the horizontal distance several times greater than the vertical distance, the forces of surface tension is not enough to tighten the surface between the base and(or) number of the mi of microamerica, and the accumulated liquid flows vertically.

Thus, due to the good wettability of the surface horizontally and good flow vertically increases the efficiency of separation, eliminates the accumulation of fluid in the nozzle and release it with the gas stream. Separation efficiency also increases due to the spin of the gas stream and garbage drops of liquid on the surface of the nozzle.

The nozzle design improves the efficiency of the separation process liquid from the gas and process intensification of mass transfer by increasing the specific surface area and turbulization of the flow inside the nozzle layer. The design of the nozzle is easy to manufacture due to the use of standard grids.

1. Regular nozzle for heat and mass transfer and separation apparatus containing package of the inclined corrugated sheets or tiles with inclined projections directed at the surfaces of the sheets facing each other in intersecting directions, with possibility of installation between sheets of perforated elements, characterized in that the leaves and(or) adjacent elements have microcavities threads forming the perforation, and the axis of microamerica threads oriented in the direction from the vertical.

2. Regular nozzle for heat and mass transfer and separation apparatus is of ATA according to claim 1, characterized in that micronavigation flows formed the warp and the weft of a woven mesh, in which section the basics more duck section, and the step between the base oriented towards the vertical, more spacing between the weft.

3. Regular nozzle for heat and mass transfer and separation apparatus according to claim 1, characterized in that the elements are provided with corrugations intersecting with corrugations or protrusions sheets, and corrugated elements less bumps or ridges of the leaves.

4. Regular nozzle for heat and mass transfer and separation apparatus according to claim 1, characterized in that micronavigation made in the form of pairwise different directions from the plane of slots.

5. Regular nozzle for heat and mass transfer and separation apparatus according to claims 1 and 3, characterized in that the elements between sheets installed in pairs.



 

Same patents:

FIELD: separation.

SUBSTANCE: method comprises uniform distribution and supply of gas-liquid mixture to the structurized members with macroscopic and microscopic structures, impregnating the surface of the members with the liquid to be separated, collecting liquid on the surfaces of the structures, and discharging liquid and gas separately. The liquid in gas phase is converted into the liquid phase by reaching the phase thermodynamic equilibrium of the mixture.

EFFECT: enhanced efficiency.

3 cl, 3 dwg

FIELD: petrochemical industry; oil-refining industry; chemical and other industries; devices for realization mass-exchange processes in the column apparatuses.

SUBSTANCE: the invention is pertaining to the devices for realization of mass-exchange processes in the column apparatuses used both in the systems of a liquid-liquid type and in the systems of a vapor-liquid type and may be used in petrochemical, oil-refining, chemical and other industries. The mass-exchange head includes a row of rectangular platesinclined to each other at an angle with a flanging towards to each other in the upper part of the plates. The rectangular plates of no more than 1 mm thick are made with a perforation in the form of a louver gauze, in which the slit louver holes have a width S equal to 0.3-0.5 mm and with a step equal to no more than the thickness of the plates, with an inclination at an angle α equal to 30-45°, the ratio of the plate length 1 to its width S - from 13 up to 25, a direction of the louver channels to the horizontal axis of coordinates at an angle β equal to 30-45° and with the spacing interval between the louver channels of 1-2 mm. The flangings are facing each other are connected among themselves without a clearance and form a blind bin with the overflow slats in height of no less than the values of a water seal. The inclined rectangular plates with the perforation in the form of a louver gauze in vertexes of the lower angles are connected by the blind plates, which form among themselves a drain branch pipe dipped into the blind bin with the overflow plates of the below lying row of the inclined plates. The advantage of the offered design of the mass-exchange head is expansion of the range of its stable operation at a high efficiency of the mass exchange both in the systems of the liquid -liquid type and in the systems of vapor-liquid type.

EFFECT: the invention ensures expansion of the range of the mass-exchange head stable operation at a high efficiency of the mass exchange both in the systems of the liquid -liquid type and in the systems of vapor-liquid type.

2 cl, 5 dwg

FIELD: chemical industry; petrochemical industry; heat-and-power engineering and other industries.

SUBSTANCE: the invention is pertaining to distributing-contacting devices for the mass-exchange devices and may be used in chemical industry, petrochemical industry, heat-and-power engineering and other branches of industry. The distributing-contacting device contains a distribution plate supplied with a screen with holes, overflow branch-pipes, overflow devices, deflecting shields, perforated truncated cones. The perforated truncated cones are made out of a sheet of no more than 1 mm thick with shutter-type splits of a width -"S" equal to 0.3-0.5 mm, and with a step not exceeding the thickness of the sheet and with an inclination in direction of the liquid motion at an angle α equal to 30-45°, the ratio of the length "1" to its width "S" is from 13 up to 25, a direction of the shutter channels to the horizontal axis of coordinates is at an angle β is equal to 30-45° and the overflow branch-pipes. At that for the packed columns on the ends of the drain branch-pipes at the calculated space intervals there are spray washers, and for plate-type columns the liquid from the drain branch pipes is fed onto an underlying sheet of a plate through a hydraulic lock. The presented distributing-contacting device ensures a high efficiency of the mass-exchange parameters in a wide range of a stable operation of packed columns and in the plate column apparatuses.

EFFECT: the invention ensures a high efficiency of the mass-exchange parameters in a wide range of a stable operation of the packed columns and the plate column apparatuses.

3 cl, 3 dwg

FIELD: chemical industry; fine gas separation from a liquid at reconstruction of separators and filter-separators of the absorbing and rectifying columns.

SUBSTANCE: the invention is dealt with the field of chemical industry and intended for fine separation of gas from a liquid at reconstruction of separators and filter-separators of the absorptive and rectifying columns. The multi-cartridge ring-type separating nozzle contains: a cover, a filtering unit, a device of water separation, an inlet connection pipe connected with the filtering unit by a pin, gas-distributing discs fixed to the pin. The filtering unit is made in the form of mesh cartridges mounted one on another. At that the internal surfaces of the mesh cartridges form a gas-distributing collector. The device of water separation is made in the form of the overflowing pipes located in the cartridges and mounted under them the drain pans with the axial apertures. Each mesh cartridge is supplied with a baffle made in the form of a plain disk with an axial aperture and a ring-type bead along the disc perimeter. Each mesh is formed by simultaneous winding of two parallel bands of the mesh, one of which is made out of a flat mesh, and the other - out of a corrugated mesh. On the side of its cylindrical internal surface a mesh cartridge is supplied with a cylindrical perforated shell. At that the first layers of the mesh band are fixed to the perforated shell by metal staples or welded to the perforated shell. At least two external layers of each mesh band are fixed by metal staples. The number of the mesh cartridges makes 6. The overflowing pipes are installed uniformly around the nozzle on a circumference, diameter of which makes from 0.85 up to 0.92 of the external diameter of the mesh cartridge and the diameter of a flow area of each overflowing pipe makes from 0.038 up to 0.05 of the external diameter of a mesh cartridge, and the total area of apertures of the shell perforation makes from 50 up to 60 % of the area of the internal cylindrical surface of the shell. In result the invention allows to increase efficiency of separation at the expense of prevention of the separated liquid accumulation in the cartridges of the nozzle.

EFFECT: the invention ensures increase efficiency of separation and prevention of the separated liquid accumulation in the cartridges of the nozzle.

2 cl, 1 dwg

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FIELD: oil and gas industry.

SUBSTANCE: regular nozzle comprises stack of sheets provided with sloping corrugations or projections. The perforated members are interposed between the sheets. The sheets and/or the perforated members interposed between them are provided with flow swirlers that define perforation. The axes of the swirlers are vertical. The swirlers can be defined by woven grid. The members may be provided with corrugations that intersect with the corrugations or projections on the sheets. The corrugations of the members are smaller than corrugations or projections on sheets. The swirlers are made of slots, and members are interposed between the sheets in pair.

EFFECT: enhanced efficiency.

4 cl, 10 dwg

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