CN219376625U - Corrugated filler sulfuric acid absorption tower capable of liquid redistribution - Google Patents

Abstract

The utility model discloses a corrugated filler sulfuric acid absorption tower capable of carrying out liquid redistribution, which comprises a tower body and a tower cover, wherein a demister, a liquid distributor and a corrugated filler layer are sequentially arranged in the tower body from bottom to top, the liquid redistributor is arranged between the corrugated filler layers and comprises a diversion layer fixedly connected with the lower end of a corrugated filler layer I and an elastic filler layer arranged between a corrugated filler layer II and the diversion layer, an outer ring body, a middle ring body, an inner ring body and a spoke body are arranged on a lower bottom plate of the diversion layer at intervals, and a flow guide plate is arranged in a cavity formed between the outer ring body, the middle ring body and the spoke body.

Description

Corrugated filler sulfuric acid absorption tower capable of liquid redistribution

Technical Field

The utility model relates to sulfuric acid tower equipment, in particular to a corrugated filler sulfuric acid absorption tower capable of redistributing liquid in a filler layer.

Background

The packing used in the packing towers in the industries of chemical industry, petrochemical industry, food, medicine and the like mainly comprises random packing (such as stepped rings, pall rings, raschig rings and the like) and regular packing (metal corrugated packing and ceramic regular corrugated packing). The ceramic regular corrugated filler has the advantages of strong corrosion resistance, high heat and mass exchange efficiency, high operation elasticity, small liquid holdup and the like. Therefore, tao Gui whole corrugated packing is used in the sulfuric acid absorption tower in a relatively large amount. However, as the direction of the Tao Gui corrugated packing flow channel is generally inclined downwards, the fluid always flows to the vicinity of the tower wall along the flow channel, and thus the wall flow phenomenon is formed as well as the random packing. And as the tower increases, wall flow becomes more severe, and it is tested that 10% of wall flow is 40% and the influence on separation effect is more than 15%. Therefore, the method reduces or eliminates the wall flow effect, and has important significance for improving the separation capacity of the packed tower and reducing the cost. Although the wall flow effect of the ceramic regular corrugated filler sulfuric acid absorption tower is smaller than that of the random packing sulfuric acid absorption tower, when the ceramic regular corrugated filler is higher, the generated wall flow effect is also increased, and in order to reduce the influence of wall flow on the separation effect, besides the metal liquid distributor is arranged at the top of the filler, the metal liquid redistributor is also arranged in the middle of the filler as in the random packing sulfuric acid absorption tower. Thus, although the defect of influence on separation efficiency caused by the flow deflecting wall flow of the solution is greatly reduced, the following problems are caused: firstly, the height of the metal liquid distributor between the fillers is at least 600 mm, the weight is 300-500 kg, even more than 1 ton, the height and load of the tower can be increased, the investment, installation and maintenance difficulty are increased, the metal liquid redistributor is easy to corrode, the service life is not long, even the solution can generate air resistance, the resistance of the desulfurizing tower is increased, and the separation effect is reduced.

Disclosure of Invention

Aiming at the problems pointed out in the prior art, the utility model provides the liquid redistributor arranged in the middle of the corrugated filler, which can not only increase the height and load of the tower body, but also prolong the service life of the tower body, reduce the pressure drop of the tower body, redistribute the liquid in the middle of the corrugated filler and reduce the influence of the flow deflecting wall flow of the solution on the separation efficiency.

The utility model aims at realizing the purposes, the corrugated filler sulfuric acid absorption tower capable of carrying out liquid redistribution comprises a tower body and a tower cover, wherein a demister, a liquid distributor and a corrugated filler layer are sequentially arranged in the tower body from bottom to top, the corrugated filler layer comprises a corrugated filler layer II arranged on a supporting ring and a corrugated filler layer I positioned above the corrugated filler layer II, a liquid redistributor is arranged between the corrugated filler layer I and the corrugated filler layer II, the liquid redistributor comprises a diversion layer fixedly connected with the lower end of the corrugated filler layer I and an elastic filler layer arranged between the corrugated filler layer II and the diversion layer, the diversion layer is a basin-shaped body made of tetrafluoroplastic, the split-flow-layer lower bottom plate is provided with an outer ring body, an intermediate ring body, an inner ring body and spoke bodies at intervals along the radial direction, an outer guide plate is arranged in a cavity formed among the outer ring body, the intermediate ring body and the spoke bodies, an inner guide plate is arranged in a cavity formed among the intermediate ring body, the inner ring body and the spoke bodies, the outer guide plate and the inner guide plate are horizontally fan-shaped, the cross section of the inner guide plate is arc-shaped, the upper ends of the outer guide plate and the inner guide plate are respectively fixed on the outer ring body and the intermediate ring body, the lower ends of the outer guide plate and the inner guide plate are cantilever-shaped, the lower ends of the intermediate ring body and the inner ring body opposite to the lower ends of the outer guide plate and the inner guide plate are respectively provided with an intermediate guide opening and an inner guide opening, and a plurality of guide holes which are annularly distributed are arranged on the split-flow-layer lower bottom plate; the elastic filler layer comprises a plastic grid plate and fiber tows which are distributed in a net shape and are pressed on the plastic grid plate.

The height of the diversion layer is 300-500 mm, the height of the elastic filler layer is 50-100 mm, and water baffles are respectively arranged on two sides of the outer guide plate and the inner guide plate.

The utility model uses the split-flow layer made of tetrafluoroplastic and the elastic filler layer to combine, and the liquid redistributor with the total height not more than 600 mm is arranged between the corrugated filler layers instead of the liquid redistributors made of the prior metal, thus not only achieving the liquid distribution function of the liquid redistributors made of the metal, but also reducing the weight of the liquid redistributors, lowering the height and pressure drop of the tower body and prolonging the service life of the liquid redistributors.

Compared with a tray type liquid redistributor made of stainless steel, the height of the tray type liquid redistributor can be reduced by 300-400 mm, the weight of the liquid redistributor can be reduced by more than 200 kg, the weight of the liquid redistributor is reduced by 50%, the flow of the eliminating wall of the conventional tray type liquid redistributor is 80-85%, and the flow of the eliminating wall of the liquid redistributor is 83-92%.

When the utility model is used, when water from the liquid distributor enters the packing layer I to contact with ascending gas in the corrugated packing layer and flow along the downward inclined flow channel, the liquid flowing near the tower wall is increased, thus forming wall flow phenomenon, and the wall flow effect is increased along with the increase of the tower height. When the utility model is arranged in the middle of the corrugated filler layer, the wall flow effect liquid formed by the tower wall is guided by the outer guide plate and the inner guide plate from the corrugated filler layer I (upper corrugated filler layer) under the action of gravity, the liquid can gradually flow to the middle of the liquid redistributor along the inner guide plate and the outer guide plate through the inner guide plate and the outer guide plate, then flows to the elastic filler layer through the drainage holes, the liquid flowing down from the upper corrugated filler layer enters the liquid redistributor to be collected, the descending water drops are cut into finer water drops by fiber tows distributed in a fine grid shape on the elastic filler layer and evenly distributed and flow into the next layer of filler (corrugated filler layer II), and secondary wall flow is not formed, so that the wall flow phenomenon formed in the corrugated filler can be completely or mostly eliminated.

Drawings

FIG. 1 is a schematic view showing the structure of a sulfuric acid absorption tower of the present utility model,

figure 2 is a schematic view of the a-direction structure of figure 1,

figure 3 is a schematic view of the cross-sectional B-B structure of figure 2,

figure 4 is a schematic view of the C-direction structure of figure 2,

fig. 5 is a schematic view of the D-D cross-sectional structure of fig. 3.

In the figure, 1, a tower cover 2, a demister 3, a gas outlet 4, a liquid distributor 5, a liquid inlet 6, a corrugated packing I7, a strapping 8, a corrugated packing II 9, a support grid 10, a support ring 11, a liquid outlet 12, a drain 13, a gas inlet 14, an outer ring body 15, an outer guide plate 16, an intermediate ring body 17, an inner guide plate 18, an inner ring body 19, a spoke body 20, a fixed head 21, a guide hole 22, an intermediate guide opening 23, an inner guide opening 24, an intermediate liquid cavity 25, a water baffle 26, a plastic grid plate 27, fiber bundle wires 28, a tower body 29, an elastic packing layer 30 and a diversion layer.

Detailed Description

In the figure, a corrugated filler sulfuric acid absorption tower capable of liquid redistribution comprises a tower body 28 and a tower cover 1, wherein a purified gas outlet 3 is arranged at the top of the tower body, a sewage outlet 12 and a treated liquid outlet 11 are arranged at the bottom of the tower body, a liquid inlet 5 is arranged at the upper part of the tower body, a gas inlet 13 for gas to be treated is arranged at the lower part of the tower body, a demister 2, a liquid distributor 4 and a corrugated filler layer are sequentially arranged in the tower body from bottom to top, the liquid distributor is connected with the liquid inlet 5, the corrugated filler layer comprises a corrugated filler layer II 8 and a corrugated filler layer I6 positioned above the corrugated filler layer II, a high-strength supporting grid 9 made of stainless steel is arranged on a supporting ring 10, the corrugated filler layer II 8 is fixed on the inner wall of the tower body by the supporting ring, a liquid redistributor is arranged between the corrugated filler layer I and the corrugated filler layer II, when the total height of the corrugated filler layer is smaller than 2.5 m, a liquid redistributor is used between the corrugated filler layer I with the height less than 1500 mm and the corrugated filler layer II with the height less than 1000 mm, two liquid redistributors (namely, when the corrugated filler layer is divided into middle, middle and lower three layers) can be also used when the total height of the corrugated filler layer is higher than 2.5 m, the liquid redistributor comprises a split layer 30 fixedly connected with the lower end of the corrugated filler layer I through a strapping 7 and an elastic filler layer 29 arranged between the corrugated filler layer II and the split layer, the split layer is made into a basin-shaped body through tetrafluoroplastic, an outer ring body 14, an intermediate ring body 16 and an inner ring body 18 are arranged on the lower bottom plate of the split layer at intervals, eight square spoke bodies 19 (ten, twelve and the like can also be used according to the inner diameter and the height of the tower) are arranged along the radial direction, the intermediate ring body can be one ring, or two or three rings, an intermediate liquid cavity 24 is arranged between the inner ring bodies, an outer deflector 15 is arranged in a cavity formed among the outer ring body, the intermediate ring body and the spoke bodies according to the inner diameter and the height of the tower, water baffles 25 are arranged at two sides of the outer deflector (enabling liquid not to overflow outwards but flow in the middle of the straight distribution layer), the external size of the outer deflector is slightly smaller than the cavity formed among the outer ring body, the intermediate ring body and the spoke bodies, an inner deflector 17 is arranged in the cavity formed among the intermediate ring body, the inner ring body and the hub body, water baffles 25 are also arranged at two sides of the inner deflector, the height of the water baffles is 20-30 mm, the external size of the inner deflector is slightly smaller than the cavity formed among the inner ring body, the intermediate ring body and the spoke bodies, the outer deflector and the inner deflector are horizontally fan-shaped, the cross section is 45-60 degrees inclined circular arc, the upper ends (circular arc upper heads) of the outer deflector and the inner deflector are provided with fixing heads 20, the fixing heads are respectively fixed on the outer ring body and the middle ring body through colloid or in a real-time mode, the outer deflector and the inner deflector are integrated with the diversion layer, the lower ends (circular arc lower ends) of the outer deflector and the inner deflector are cantilever ends, the lower ends of the middle ring body and the inner ring body opposite to the lower ends of the outer deflector and the inner deflector are respectively provided with square or rectangular middle diversion openings 22 and inner diversion openings 23, the middle diversion openings 22 and the inner diversion openings 23 are respectively higher than the lower ends of the outer deflector and the inner deflector, and a plurality of diversion holes 21 distributed in a ring shape are arranged on a lower bottom plate (the thickness of 10-15 mm) of the diversion layer; the aperture of the drainage holes is 2-3 mm, the interval of the drainage holes is 5-8 mm, and the elastic filler layer comprises a plastic grating plate 26 and fiber tows 27 which are distributed in a net shape (the mesh number is 100-150 meshes) and are pressed on the plastic grating plate.

Claims (3)

1. The utility model provides a ripple packing sulfuric acid absorption tower that can carry out liquid redistribution, it includes tower body (28) and tower lid (1), from having set gradually defroster (2), liquid distributor (4) and ripple packing layer under to in the tower body, ripple packing layer is including setting up ripple packing layer II (8) on supporting grid (10) and being located ripple packing layer I (6) on II, be provided with liquid redistributor between ripple packing layer I and the ripple packing layer II, characterized by: the liquid redistributor comprises a diversion layer (30) fixedly connected with the lower end of the corrugated packing layer I and an elastic packing layer (29) arranged between the corrugated packing layer II and the diversion layer, wherein the diversion layer is made of tetrafluoroplastic, an outer annular body (14), an intermediate annular body (16), an inner annular body (18) and spoke bodies (19) arranged along the radial direction are arranged on a lower bottom plate of the diversion layer at intervals, an outer diversion plate (15) is arranged in a cavity formed among the outer annular body, the intermediate annular body and the spoke bodies, an inner diversion plate (17) is arranged in a cavity formed among the intermediate annular body, the inner annular body and the spoke bodies, the outer diversion plate and the inner diversion plate are horizontally in a sector shape, the upper ends of the outer diversion plate and the inner diversion plate are respectively fixed on the outer annular body and the intermediate annular body, the lower ends of the outer diversion plate and the inner diversion plate are respectively provided with an intermediate diversion opening (22) and an inner diversion opening (23), and a plurality of annular drainage holes (24) are formed on the lower bottom plate of the diversion layer; the elastic filler layer comprises a plastic grating plate (26) and fiber tows (27) which are distributed in a net shape and are pressed on the plastic grating plate.

2. The corrugated packed sulfuric acid absorber capable of liquid redistribution according to claim 1, wherein: and water baffles (25) are arranged on two sides of the outer guide plate and the inner guide plate.

3. The corrugated packed sulfuric acid absorber capable of liquid redistribution according to claim 1, wherein: the outer guide plate and the inner guide plate are horizontally in a sector shape, and the cross section of the outer guide plate and the inner guide plate is in an arc shape inclined at 45-60 degrees.