Multicartridge ring-type separating nozzle

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

 

The invention relates to the field of chemical industry and is used to thin the purification of gas from the liquid in the reconstruction of the separators and filter-separators absorption and distillation columns.

Known separation nozzle containing the filter unit in the form of thin ceramic rings with a height equal to the diameter (Kasatkin A.G. Basic processes and apparatuses of chemical technology. - M.: Chemistry, 1973, p.447).

The disadvantage of this nozzle is their low efficiency and productivity.

Known attachment filter with two coupling disks, spaced from the ends of which pass-through the input passage of the locking disc is closed by the valve plate, beneath which is located a block coil spring, and the locking disk facing the plate has projections to the spring seat, while between the coils of the spring and the disk passes the processed medium (DE, 3904701, A1, ArgoGmbH für Feinmechanik, 30.08.90, 01 D 27/00).

A disadvantage of the known nozzle is low productivity, while ensuring regulatory quality cleaning gas.

Closest to the invention to the technical essence and the achieved result is multicostata annular separation nozzle containing the cover, the filter block, riser means, an inlet fitting connected to f altruisim block pin and naturally drives attached to the stud, while the filter unit is made in the form of a mesh cassettes installed on one another and tied up in height with the help of studs and the inner surface of the mesh cassettes form a gas distribution manifold and riser means made in the form of overflow tubes arranged in cassettes and trays that are installed under the tapes, the nozzle is provided with a baffle made in the form of a flat disc with an axial bore and an annular flange around the perimeter of the disk, recessed in the filtration unit, and bumpers attached to the cover and each pallet from the upper end of each mesh of the cartridge (see EN 26441, 01 D 25/00, 10.12.2002).

The separators are equipped with the offer nozzle, have a high efficiency and productivity by increasing contact between the gas-liquid stream and the material of the separation layer, however, in these nozzles may accumulate the separated liquid medium in the cassette with an uneven load on the cassette, which is associated with suboptimal location of the overflow tubes and lack of reduced cross-section.

Task to be solved by the present invention is directed, is to increase the efficiency of separation by preventing the accumulation of separated liquid in the cartridge nozzles.

Specified technical is the second result is due to the fact, what multicostata annular separation nozzle includes a cover, a filter block, riser means, inlet pipe connected to the filter block pin, and naturally drives attached to the stud, while the filter unit is made in the form of a mesh cassettes installed on one another and tied up in height with the help of studs and the inner surface of the mesh cassettes form a gas distribution manifold and riser means made in the form of overflow tubes arranged in trays, and pallets with an axial hole, installed under cassettes, each mesh tape is equipped with a baffle made in the form of a flat disc with an axial hole, and annular flange around the perimeter of the disk, recessed in mesh tape and bumpers attached to the cover and each pallet from the upper end of each mesh cassette, with each mesh tape is formed by simultaneously winding two parallel strips of the grid, one of which is made of a flat grid, and the second of the corrugated mesh, from its cylindrical inner surface of the mesh tape provided with a cylindrical perforated shell, and the first layers of strips of mesh attached to a perforated metal shell metal clamps or welded to performtowin the th shell, at least two outer layers each band mesh stitched with metal staples, the net number of cassettes is 6, overflow tube set evenly around the axis of the nozzles around the circumference, the diameter of which is from 0.85 and 0.92 outer diameter mesh tape, the diameter of the bore of each overflow tube ranges from 0.038 to 0,05 outer diameter mesh cassette, and the total area of the holes of the perforation of the shell ranges from 50 to 60% of the area of the inner cylindrical surface of the shell.

While it is preferable that the bumper was attached to the lid and the pallets by means of welding, each cassette was formed by a continuous winding of the two mesh layers, of which one layer is flat, and the other Gavrilova transverse corrugations; the tapes were made in a cylindrical form; as mesh material was used ordinary steel or stainless steel, or stainless materials, or plastic; was used mesh bag, or ploskokatanoj, or wire, or expanded metal form.

Not less important is the number of mesh cassettes in the nozzle, the location of the overflow tube and the flow area. During the research it was found that the optimal number of cassettes is six. Fewer leads to lower productivity and, and more difficult process of establishing a uniform load on all mesh tape. It was found that when performing the nozzle, from which the overflow tube set evenly around the axis of the nozzles around the circumference, the diameter of which is from 0.85 and 0.92 outer diameter mesh tape, and the outer diameter of each overflow tube ranges from 0.038 to 0,05 outer diameter mesh tape prevents a situation in which the separated in the cartridge liquid is not able to be quickly removed from the cassette. During the experiment it was possible to find such a diameter, the location of the overflow tube in which the liquid is effectively removed from the inner layers of mesh and external in relation to the tubes of mesh layers. As for the holes in the perforated shell, it was found that when the total area of the holes of perforated shells from 50 to 60% of the area of the inner cylindrical surface of the shell is attained sufficient stiffness for minor hydraulic resistance.

The drawing shows a longitudinal section multicassette annular separation nozzles.

Multicostata annular separation nozzle includes a cover 1, the inlet pipe 2 and the gas distribution discs 4, attached to the stud 3. The attachment contains the filter is on the third block, made in the form of a mesh cassettes 5 installed on one another and tied up in height with the help of studs 3, and the inner surface of the mesh cassettes 5 to form a gas distribution manifold 6. Riser means of a nozzle made in the form of overflow tube 7 located in the cassette 5, and 8 pallets with an axial hole installed in the cassette 5. In addition, the nozzle is provided with a support 9 made in the form of a flat disc with an annular flange around the perimeter of the disk, recessed formed in the cassette 5, the filter blocks. The bump 9 is attached to the cover 1 and each pallet 8 from the upper end of each mesh tape 5.

Inlet pipe 2 is made with the mounting rib 10 and welded thereto by a nut 11, and the cover 1 is connected to pin 3 by means of nuts 12.

Mesh tape 5 is made of cylindrical shape. As the mesh material can be used plain or stainless steel, or stainless materials, or plastic, may be applied mesh bag, or ploskokatanoj, or wire, or expanded metal form. Each mesh tape 5 is formed by simultaneously winding two parallel strips of the grid, one of which is made flat, and the other corrugated transverse corrugations, performs a triple function. First, the corrugations obespechivayushchei height of the cassettes 5, secondly, create an internal vertical cavity promoting uniform distribution of gas in the height of the cassette 5. In addition, vertical cavity corrugated layers make it easy to clean the cartridge 5 from the solid mechanical impurities by washing, blowing or shaking after drying. Continuous winding mesh layer provides such strength cartridge that even when driving its solid mechanical impurities deformation and destruction of the tapes is not happening. From its cylindrical inner surface of the mesh tape 5 is equipped with a cylindrical perforated shell 13, and the first layers of strips of mesh attached to a perforated metal shell 13 metal clamps or welded to the perforated shell. At least two outer layers each band mesh stitched with metal staples. The net number of cassettes is 6. Overflow tube 7 is installed evenly around the axis of the nozzles around the circumference, the diameter D1which is from 0.85 and 0.92 outer diameter D2mesh tape 5. The diameter D3bore each overflow tube 7 is from 0.038 to 0.05 outer diameter mesh tape 5, and the total area of the holes of the perforation of the shell 13 is 50 to 60% of the area of the inner cylindrical surface of the shell 13.

<> The separated medium enters into the nozzle through the inlet 2. Naturally the disks 4 and the perforated shell 13 to provide a uniform distribution of gas flow through all the components of the nozzle tapes 5. The degree of uniformity of the distribution of consumption in the cassette 5 is determined by the ratio of the diameters of the gas disk 3. The bump 9 prevents the penetration of liquid past the cassette 5 at their upper end. The number of cassettes 5 in each multicassette annular separation nozzle is six.

The separated liquid flows into the pallet 8. Each cassette 5 is equipped with an individual tray 8 with a fixed overflow pipe 7, evenly spaced around the circumference defined above diameter. Using overflow tube 7 the separated liquid from the tray 8 of the cassette 5 is poured into the tray lower cassette 5, which provides differentiated by the height of the nozzle fluid collection and separation efficiency on the layer height of the nozzle. The bottom tray 8 nozzles are not equipped with overflow pipes, and has along the axis of the overflow tube holes, through which the separated liquid is discharged into the case of a distillation column on a plate and then through the tube of the trap in the lower part of the device.

As an example of technical'hara the indices of one of the nozzles: - the maximum factor of the velocity at the outer surface of the nozzle at maximum separation 10-28; - the performance of a single nozzle at a pressure of from 4.0 to 10.0 MPa is 600-1300 thousand N/m3per day; - the hydraulic resistance for different types of nozzles is 30-700 mm water. Art.

For specific conditions can be used nozzle with the diameter of the inlet pipe 50-220 mm, an outer diameter of the nozzle 100-470 mm Can be used in a variety of designs mesh layers, optimal for different characteristics of the treated stream.

Increasing the efficiency and performance of devices equipped with the proposed extension is provided at the expense of greatly increasing the contact surface between the gas-liquid stream and the material of the separation layer.

The main advantages of the separators equipped multicassette annular nozzles, is the ease of maintenance and full maintenance. The nozzles provide a replacement, repair and regeneration as the whole set of the separation section of the apparatus, and a separate nozzles or cassettes.

Ring separation nozzles used for the reconstruction of the separators, filter separators absorption and distillation columns to provide fine cleaning gas from the liquid.

1. Mult the cassette annular separation nozzle, contains cover, filter block, riser means, inlet pipe connected to the filter block pin, and naturally drives attached to the stud, while the filter unit is made in the form of a mesh cassettes installed on one another and tied up in height with the help of studs and the inner surface of the mesh cassettes form a gas distribution manifold and riser means made in the form of overflow tubes arranged in trays, and pallets with an axial hole, installed under cassettes, each mesh tape is equipped with a baffle made in the form of a flat disc with an axial bore and an annular flange around the perimeter of the disk, recessed in mesh tape and bumpers attached to the cover and each pallet from the upper end of each mesh cassette, characterized in that each mesh tape is formed by simultaneously winding two parallel strips of the grid, one of which is made of a flat grid, and the second of the corrugated mesh, from its cylindrical inner surface of the mesh tape provided with a cylindrical perforated shell, and the first layers of strips of mesh attached to a perforated metal shell metal clamps or welded to a perforated metal shell, at least two outer the x layer each strip mesh stitched with metal staples, the net number of cassettes is 6, overflow tube set evenly around the axis of the nozzles around the circumference, the diameter of which is from 0.85 and 0.92 outer diameter mesh tape, the diameter of the bore of each overflow tube ranges from 0.038 to 0,05 outer diameter mesh cassette, and the total area of the holes of the perforation of the shell ranges from 50 to 60% of the area of the inner cylindrical surface of the shell.

2. The nozzle according to claim 1, characterized in that the perforation holes of the shell is made square.



 

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