RU2124395C1 - Multi-cassette ring separation checker - Google Patents

Abstract

FIELD: chemical industry; fine cleaning of gas from liquid. SUBSTANCE: checker has cover, filtering unit consisting of screened cassettes fitted one on another and tightened up by means of stud; inner surfaces of cassettes form gas distributing collectors where gas distributing disks are arranged; distributing disks are secured to stud. Cassettes are provided with overflow pipes for draining the separated liquid into trays located under cassettes; number of cassettes ranges from 1 to 10. Gas is directed to branch pipe where sorbent gets in contact with gas, liquid is crushed by gas flow and is distributed among cassettes; in screened layer drops are coagulated into thin film flowing to tray over surface of screen and overflow pipes. EFFECT: enhanced efficiency and increased productivity of separators provided with checkers due to increased surface of contact between gas-and-liquid flow and material of separation layer. 10 cl, 4 dwg

Description

 The invention relates to the field of chemical industry and is intended for the reconstruction of separators, filter separators of absorption and distillation columns to provide fine gas purification from liquid.

 Currently, a new concept is being developed to improve the technical means of cleaning gas streams from liquid impurities. It consists in achieving the maximum degree of utilization of the internal volume of the separator in order to double the surface of the sedimentation and drainage of the liquid.

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

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

 Known nozzle containing a filter from a block of annular disks with a filter element on both sides and internal drainage channels for the filtrate, in which the liquid and gas are mixed in the gaps between the disks using a shaft, the disks being beveled from the center and made with spiral grooves to increase flow turbulence Wednesday (GB, 1479553, Toshin Science CO. LTD, 13.07 / 77, B 01 D 25/02).

 The disadvantage of this nozzle is the mechanical removal of fluid from the separator.

 A nozzle in the form of a filter is known, equipped with two connecting discs located at the ends, the through entrance passage of the locking disc is closed by a valve disc, under which there is a screw spring block, the locking disc facing the plate has protrusions for supporting the spring with turns between the turns and the disk passes the medium being processed (DE, 3904701, A1, ArgoGmbH fur Feinmechanik, 08/30/90, B 01 D 27/00).

 A disadvantage of the known nozzle is low productivity while ensuring the standard quality of gas purification.

 The closest to the proposed technical essence and the achieved result is a multicassette annular separation nozzle containing a filter unit and a water separating agent (DE, 1486798, GAF Corp., 09/27/73, B 01 D 25/00).

 The disadvantage of this nozzle is low efficiency and productivity due to the undeveloped contact surface between the gas-liquid flow and the material of the separation layer.

 The technical result of the invention is to increase the efficiency and productivity of separators equipped with the proposed nozzle, by increasing the contact between the gas-liquid stream and the material of the separation layer.

 The technical result is achieved in that a multicassette annular separation nozzle containing a cover, a filter unit and a water separating device, according to the invention, is equipped with an inlet pipe connected to a filter unit by a pin and gas distribution discs attached to the pin, the filter unit is made in the form of mesh cassettes installed one on the other, and pulled together in height by means of a hairpin, while the inner surfaces of the mesh cassettes form a gas distribution manifold, and the water separating cp dstvo is in the form of overflow pipes arranged in the cassettes and trays, installed under the cassettes.

The technical result is most achieved under the following conditions:
- each cassette is formed by continuous winding of two layers of the grid, of which one layer is flat and the other is corrugated by transverse corrugations;
- cassettes are made of cylindrical shape;
- the number of cassettes is from 1 to 10;
- ordinary and / or stainless steel and / or stainless materials and / or plastic are used as the mesh material;
- the mesh used is tubular, and / or flat knitted, and / or finely meshed, and / or expanded metal;
- the inlet pipe is made with a mounting rib and a nut welded to it;
- the cover is connected to the stud by means of a nut;
- overflow tubes are located in cassettes uniformly around the circumference;
- the lower pan is made with holes for draining the separated liquid.

 The design of the multicassette annular separation nozzle (MCN) is shown in FIG. 13.

 The nozzle contains a cover 1, an inlet pipe 2, gas distribution discs 3 attached to the pin 4, the filter unit is made in the form of mesh cassettes 5, mounted one on top of another and pulled together by a pin 4, while the inner surfaces of the cassettes form a gas distribution manifold 6, water-separating means are made in in the form of overflow tubes 7 located in the cassettes 5, and pallets 8 installed under the cassettes 5.

 In FIG. 3 shows that the inlet pipe 9 is made with a mounting rib 10 and a nut 11 welded to it, the cover 1 is connected to the stud 4 by means of a nut 12.

 In FIG. 2 shows that the mesh cassettes are cylindrical in shape. As the material of the mesh, ordinary and / or stainless steel and / or stainless materials and / or plastic can be used, while a mesh of sleeve and / or flat knitted and / or fine mesh and / or expanded form can be used . The mesh winding is formed by two layers, of which one layer is flat, the other is corrugated by transverse corrugations that perform a triple function. Firstly, the corrugations provide rigidity along the height of the cassettes, and secondly, they create internal vertical cavities that promote uniform distribution of gas along the height of the cassettes. In addition, the vertical cavity of the corrugated layer makes it easy to clean the cartridge of solid mechanical impurities by washing, blowing or shaking after drying. The continuous winding of the mesh layers provides such a strength of the cartridge that even when clogged with solid mechanical impurities, there is no deformation or destruction of the cartridge.

 Gas distribution discs provide a uniform distribution of gas flow over all cassettes making up the nozzle. In FIG. 1 shows a four-cartridge nozzle. The number of cassettes depending on the required performance can be from one to ten. The degree of uniformity of the distribution of flow across the cartridges is determined by the ratio of the diameters of the disk, as well as the number and location of nozzles in the apparatus.

 If necessary, the outer and inner diameters, height and width of the mesh layer can vary individually and in combinations.

 Each cassette is equipped with an individual pallet with overflow tubes fixed to them, evenly spaced around a circumference of a certain diameter. Using the tubes, the liquid from the tray of the cartridge is poured into the tray of the underlying cartridge, which ensures liquid collection differentiated by the height of the nozzle and prevents deformation of the gas distribution and separation efficiency along the height of the nozzle layer. The lower pallet of the nozzle is not equipped with overflow tubes, but has holes along the axis of the tubes through which the separated liquid is drained in the case of a distillation column onto a plate and then through a water trap to the bottom of the apparatus.

 Comparative data for various separation elements obtained under the same test conditions during the purification of natural gas are shown in FIG. 4.

 Natural gas was supplied at a pressure of about 3.5 MPa.

 As can be seen from the above graph, the inventive nozzle provides minimal ablation in the maximum performance range.

The technical characteristics of the MKN nozzle are as follows:
- the maximum speed factor with the outer surface of the nozzle in the maximum separation mode 10 - 28;
- the productivity of a single nozzle at a pressure of from 4.0 to 10.0 MPa is 600 - 1300 thousand Nm ³ per day;
- hydraulic resistance for various types of nozzles is 30 - 700 mm of water. Art.

 For specific conditions, nozzles can be used with the number of cartridges from 1 to 10 pieces, the diameter of the inlet pipe 50 - 220 mm, the outer diameter of the nozzle 100 - 470 mm. Can be used in various designs of mesh layers, optimal for various characteristics of the processed stream.

 The increase in the efficiency and productivity of devices equipped with the proposed nozzles is ensured by a multiple increase in the contact surface between the gas-liquid flow and the material of the separation layer.

 The main advantages of separators equipped with multicassette ring nozzles include ease of maintenance and complete maintainability. The nozzle design provides replacement, repair and regeneration of the entire set of the separation section of the apparatus, as well as individual nozzles or cartridges.

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

Claims (10)

 1. Multicassette annular separation nozzle containing a cover, a filter unit and a water separating means, characterized in that it is equipped with an inlet pipe connected to a filter unit by a pin, gas distribution discs attached to the pin, the filter unit is made in the form of mesh cassettes mounted on top of one another and tightened in height with a hairpin, while the inner surfaces of the mesh cassettes form a gas distribution manifold, and the water separating means is made in the form of overflow pipes to located in the cassettes, and pallets installed under the cassettes.  2. The nozzle according to claim 1, characterized in that each cassette is formed by continuous winding of two layers of the mesh, of which one layer is flat and the other is corrugated by transverse corrugations.  3. The nozzle according to claim 1 or 2, characterized in that the cartridge is made of cylindrical shape.  4. Nozzle according to any one of paragraphs. 1 to 3, characterized in that the number of cassettes is from 1 to 10.  5. Nozzle according to any one of paragraphs.1 to 4, characterized in that the material of the mesh used is ordinary and / or stainless steel, and / or stainless materials, and / or plastic.  6. The nozzle according to any one of paragraphs.1 to 5, characterized in that the mesh is used as a sleeve, and / or flat knitted, and / or finely meshed, and / or expanded metal.  7. Nozzle according to any one of claims 1 to 6, characterized in that the inlet pipe is made with a mounting rib and a nut welded to it.  8. Nozzle according to any one of claims 1 to 7, characterized in that the cover is connected to the stud with a nut.  9. The nozzle according to any one of paragraphs.1 to 8, characterized in that the overflow tubes are located in the cassettes uniformly around the circumference.  10. The nozzle according to any one of paragraphs.1 to 9, characterized in that the pan is made with holes that coincide with the axes of the overflow pipes, to drain the separated liquid.

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