Lattice column

 

(57) Abstract:

Usage: the invention relates to the structures of mass transfer columns with contact devices for effective interaction of the gas(vapor)-liquid in the processes of absorption, distillation, washing gases and may find application in chemical, petrochemical, gas, food and other related industries. The inventive lattice column includes a vertical housing with tiered located inside the centrifugal perforated gratings with perforations in the form of arched slots and located between the centrifugal lattices centripetal perforated grille with the holes in the arched slots. The diameters of the centrifugal gratings is less than the internal diameter to allow the passage with centrifugal fluid grids. The axis of the arched slots centrifugal gratings oriented at an acute angle to form from the center to the periphery in the same direction. Centers centripetal grids with holes to allow the passage of fluid through them. The centrifugal gratings are reflective perforated disks in the form of truncated cones with the perforations made in the form of arched about gateleg cone made in the form of arched slots. 7 Il.

The invention relates to the structures of mass transfer columns for interacting systems the gas(vapor)-liquid intended for the processes of absorption, rectification, and may find application in chemical, petrochemical, gas, food and related industries.

Known mass transfer column comprising a vertical cylindrical casing, a distribution grid, the packing layer on the grate supporting a distribution grid, the packing layer on the lattice, "redistributor" liquid Packed columns, made in the form of sending of a truncated cone in the peripheral part of the column, set a smaller base down, with arched grooves cut on the surface of the cone bulge up, evenly spaced concentric circles with tangentially directed axes with respect to the axis of the cone, the smaller base of the cone along its perimeter made bent up at an acute angle petals towards the entrance holes of the arched slots [1]

A disadvantage of the known mass transfer column is the uneven distribution of the liquid over the cross section of the column at different heights of the nozzle layer on under the tx2">

Most similar to that proposed to the technical essence and the achieved effect is a latticed column comprising a vertical housing with tiered located inside the centrifugal perforated gratings with perforations in the form of arched slots camber up with tangentially directed axes and arranged in concentric circles located between the centrifugal lattices centripetal perforated grilles, made in the form of cones, oriented upside down with perforations in the form of arched slots bump up with the axes directed at an acute angle to form from the periphery to the center in the same direction [2]

A disadvantage of the known lattice columns of the efficiency of mass transfer between the gas (vapor) and liquid due to the longitudinal movement of the fluid on the lattice plates at small radial velocities of the fluid in the centrifugal arrays.

To improve the efficiency of mass transfer mass transfer in lattice column comprising a vertical housing with tiered located inside the centrifugal perforated grilles, with perforations in the form of arched slots bump up races the s perforated grilles, made in the form of cones, oriented upside down with perforations in the form of arched slots bump up with the axes directed at an acute angle to form from the periphery to the center in the same direction, centrifugal lattice is made in the form of cones, oriented vertices upwards, forming an acute angle to the horizontal, the angle of the generatrix centripetal gratings twice the angle forming the centrifugal gratings, the diameters of the centrifugal gratings is less than the internal diameter to allow the passage with centrifugal fluid grids, the axis of the arched slots centrifugal gratings oriented at an acute angle to form from the center to the periphery in the same direction, centripetal grids with holes to allow the passage of fluid through them, the centrifugal gratings are reflective perforated disks in the form of truncated cones, focused on large grounds up adjacent to the walls of the column, with the perforations made in the form of arched slots bump up with the axes directed at an acute angle to the radius from the centre to the periphery in the same direction, over centripetal grilles installed reflective preparerow what she centrifugal forming gratings, with an outer diameter less than the inner diameter of the casing, perforating the reflective cone is made in the form of arched slots bump up with the axes directed at an acute angle to form from the center to the periphery in the same direction.

The proposed design of latticed columns due to their distinctive characteristics provides a solution to a technical problem the efficiency of mass transfer between the gas (vapor) and liquid.

In Fig. 1 schematically presents a lattice column, longitudinal section; Fig. 2 a section in the plane a-a in Fig. 1; Fig. 3 cross-section B-B in Fig. 1; Fig. 4 section b-b of Fig. 1; Fig. 5 section G-G in Fig. 1; Fig. 6 section d-D in Fig. 3; Fig. 7 section e-E in Fig. 3.

Lattice column (Fig. 1 7) includes a vertical cylindrical casing 1, tiered located at the height of the inside of the centrifugal contact grid 2 made in the form of cones, oriented peaks up to forming an acute angle to the horizontal, with the diameters of the bases less than the diameter of the housing 1, with the perforations made in the form of arched slots 3 bump up located on concentric circles with tangentially directed the top, adjacent to the walls of the housing 1, forming an acute angle to the horizontal, mounted asymmetrically on centrifugal bars 2, with bores for the passage of fluid and arched slits 5, performed by the bulge up with axes directed at an angle to the radius from the centre to the periphery and in the same direction under centrifugal bars 2 installed centripetal grating 6 in the form of truncated cones, driven in large grounds up tight to the inner walls of the housing 1, forming an acute angle to the horizontal, two times larger than for centrifugal gratings 2, with perforations in the form of arched slots 7, performed by the bulge upwards and arranged in concentric circles, with the axes directed at an acute angle to form from the periphery to the center and in the same direction on each radial grating 6 asymmetrically installed reflective cone 8, oriented with the top up, the base diameter of which is less than the internal diameter of the column, with an acute angle of inclination of the generatrix to the horizontal less than the angle of inclination of forming a centrifugal grating 2, the reflective cone 8 is made of arched slots 9 bulge ate the edges of the reflective cone is equally removed from the casing wall 1, and the centripetal surface of the grating 6 and rigidly fixed between them, as with centrifugal grating 2 and the reflective disks 4.

Centripetal grating 6 and the reflective disks 4 are mounted to the walls of the pillar 1 support elements 10 and the centrifugal grating 2 and the reflective cones 8 are attached to the centripetal grating 6 on the supporting pillars 11. The liquid is fed into the column through the Central pipe 12.

Works column as follows.

Gas (vapor) enters the body 1 of the column (Fig. 1-7) at the bottom and moves upward, passes through the arched slot 7 centripetal grating 6 in the direction from the periphery to the center, drags and moves in the same direction of the fluid, where it flows down, interacting closely with her at the same time, resulting in heat and mass transfer between the gas (vapor) and liquid, then a gas (steam) rises, passes through the arched slot 9 reflective cone 8 in the direction from the center to the periphery at an acute angle to the radius and carries the liquid, partially falling from above with centrifugal grating 2, to the walls of the housing 1 and the centripetal surface of the grating 6. Gas (steam) with reflective cone 8 enters the, the result is a regularly rotating two-phase flow of gas (vapor) and liquid, this liquid makes the radial-circular motion from the center to the periphery, where it flows down, and gas (steam) spiral upward movement and comes in an arched slot 5 conical reflective disk 4 on which a gas (steam) captures and moves the fluid partially draining from the top with centripetal 6 bars, from the periphery to the center by centrifugal grating 2, and gas (steam) goes up under upstream centripetal bars 6 and so on in Addition, on the conical reflective disc 4 and the reflective cone 8, the liquid enters gas (steam) coming from the bottom due to mechanical entrainment.

As centrifugal gratings 2 under the reflective disk 4 fluid moves from the center to the periphery and in contact with the gas (steam), moving (cross flow up and centripetal lattices under 6 reflective cones 8 fluid moves from the periphery to the centre and is in contact with the gas (steam), moving cross-talk up, when this is achieved a high degree of turbulence interaction phases and favorable flow pattern, providing maximum diiodoethane compared with the prototype are to ensure cross-flow of liquid and gas (vapor) in distributive lattices and countercurrent to the movement of gas (pair) and fluid between the gratings, in collisions between phases and turbulence in phases, which ensures an increase in the driving force of the process, as well as to increase the radial component of velocity of the fluid by centrifugal lattice, which increases the efficiency of mass transfer and reducing the height of the centrifugal lattice due to the possibility of reducing the angle to the horizontal generatrix.

Socially useful advantages of the invention arising from the technical advantages, as compared with the prototype are to increase the efficiency of mass transfer between the gas (vapor) and liquid, in the sharpness of the separation and purity of the separated products and their quality, and to reduce the required reflux relations in the context of rectification that will reduce the consumption of steam for rectification and to reduce the cost of separation products.

Lattice column comprising a vertical housing with tiered located inside the centrifugal perforated grilles, with perforations in the form of arched slots camber up with tangentially directed axes and arranged in concentric circles located between the centrifugal lattices centripetal perforated decision is maturity up with axes, directed at an acute angle to form from the periphery to the center in the same direction, characterized in that the centrifugal perforated grilles are made in the form of cones, oriented vertices upwards, forming an acute angle to the horizontal, two times smaller angle forming centripetal gratings, the diameters of the centrifugal gratings is less than the internal diameter to allow the passage with centrifugal fluid grids, centripetal grids with holes to allow the passage of fluid through them, the centrifugal gratings are reflective perforated disks in the form of truncated cones, driven in large grounds up with a Central hole and outer diameters, adjacent to the walls of the column, with the perforations made in the form of arched slots bump up with the axes directed at an acute angle to the radius from the centre to the periphery in the same direction, over centripetal grilles installed reflective perforated cone, oriented vertices up with angles to form a horizontal, lower angles forming a centrifugal lattices, with an outer diameter less than the internal diameter of the building is generated at an acute angle to form from the center to the periphery in the same direction.

 

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