Anti-blocking liquid distributor of rectifying tower

Abstract

The anti-blocking rectifying tower liquid distributor comprises a bottom plate, the bottom plate is installed at the top of a filler layer in a rectifying tower through locking bolts, the space between the bottom plate and the filler layer is filled with a bushing ring, a plurality of columns of gas rising grooves with the upper ends and the lower ends open are evenly distributed in the upper surface of the bottom plate, and the lower ends of the gas rising grooves penetrate through the lower surface of the bottom plate; a liquid collecting plate of a V-shaped structure is fixedly arranged above the gas lifting groove through a supporting plate, a plurality of vertically-arranged liquid guide angle steel is installed on the inner side wall of the gas lifting groove, notches of the liquid guide angle steel face the inner side wall of the gas lifting groove, and overflow hole sets in one-to-one correspondence with the liquid guide angle steel are formed in the side wall of the gas lifting groove. The liquid guide angle steel can cover the overflow hole group corresponding to the liquid guide angle steel; a flow guide structure is mounted above the liquid collecting plates and can guide liquid into each liquid collecting plate; and a defoaming structure for separating entrainment in the gas is arranged on the inner side wall of the gas lifting groove. The device has the advantages of obvious anti-blocking effect, high-efficiency entrainment separation capability and accurate liquid distribution performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rectifying column equipment, and particularly relates to a rectifying column liquid distributor capable of preventing blockage. BACKGROUND

[0002] The rectifying column is an important equipment for separating mixtures in the fields of chemical industry and petroleum, and its working efficiency and separation effect depend on the performance of the liquid distributor to a great extent. In the traditional rectifying column liquid distributor, many problems exist, which affect the normal operation and rectification effect.

[0003] On the one hand, the existing liquid distributor is prone to blockage. Since the composition of the material processed in the rectification process is complex, it may contain solid particles, polymers and other impurities. These impurities are easy to accumulate in the flow channel, small hole and other parts of the distributor when the liquid flows through the distributor, causing the flow channel to be blocked, so that the liquid is not evenly distributed, and then the gas-liquid mass transfer efficiency in the rectifying column is affected, and the quality and yield of the rectification product are reduced.

[0004] On the other hand, the separation effect of mist in the gas is poor. The gas rising in the rectifying column often carries mist, and if the mist cannot be effectively separated, the mist will carry the heavy components back to the top of the tower, reducing the purity of the top product, and also possibly causing damage to the subsequent equipment.

[0005] In addition, the traditional liquid distributor also has defects in liquid drainage and distribution, and cannot accurately and uniformly distribute the liquid to the packing layer in the rectifying column, affecting the overall performance of the rectifying column. CONTENT OF THE UTILITY MODEL

[0006] The utility model mainly aims at the problems of easy blockage, poor mist separation effect and uneven liquid distribution of the existing liquid distributor, and provides a rectifying column liquid distributor capable of preventing blockage.

[0007] The purpose of the utility model is mainly realized through the following scheme:

[0008] The application discloses an anti-blocking liquid distributor for a rectifying tower, which comprises a bottom plate fixedly arranged on the top of a filler layer in the rectifying tower through locking bolts, and a lining ring filled between the bottom plate and the filler layer, wherein the upper surface of the bottom plate is uniformly provided with a plurality of rows of lift grooves with openings at both the upper and lower ends, and the lower end of the lift groove penetrates through the lower surface of the bottom plate; a V-shaped liquid collecting plate is fixedly arranged above the lift groove through a supporting plate; a plurality of vertical liquid guide angle steels are arranged on the inner side wall of the lift groove, and the notches of the liquid guide angle steels face the inner side wall of the lift groove; the side wall of the lift groove is provided with a plurality of overflow hole groups corresponding to the liquid guide angle steels, and the liquid guide angle steel can cover the corresponding overflow hole group; a flow guide structure is arranged above the liquid collecting plate, and the flow guide structure can guide liquid into each liquid collecting plate; and a demisting structure for separating mist in gas is further arranged on the inner side wall of the lift groove.

[0009] Preferably, the flow guide structure comprises a hollow liquid collecting tank, a connecting flange pipe in communication with a liquid pipeline is arranged on the top of the liquid collecting tank, and a plurality of liquid outlets corresponding to the liquid collecting plates are arranged on the bottom of the liquid collecting tank.

[0010] Preferably, a filter screen cylinder with an open top is arranged in the connecting flange pipe, and the top of the filter screen cylinder is detachably fixedly connected with the edge of the connecting flange pipe.

[0011] Preferably, the length of the liquid collecting plate is greater than that of the corresponding lift groove, the width of the liquid collecting plate is greater than that of the corresponding lift groove, and a gap exists between the bottom of the liquid collecting plate and the top of the lift groove.

[0012] Preferably, the overflow hole group comprises upper and lower upper and lower overflow holes arranged correspondingly, and the area of the upper overflow hole is greater than that of the lower overflow hole; and the upper and lower ends of the liquid guide angle steel protrude from the upper and lower surfaces of the lift groove.

[0013] Preferably, the demisting structure comprises a plurality of piercing groups, each of the piercing groups comprises a fixing plate arranged on the inner side wall of the lift groove and a plurality of piercing needles arranged on the inner side wall of the fixing plate.

[0014] Preferably, each of the piercing groups in the lift groove is provided with a plurality of layers from top to bottom, and the piercing needles gradually incline downward in the direction away from the fixing plate.

[0015] Preferably, a V-shaped groove is arranged at the top notch of the lift groove.

[0016] Compared with the prior art, the anti-blocking liquid distributor for the rectifying tower has the following beneficial technical effects:

[0017] (1) The utility model discloses a liquid guide angle steel is set up, and the liquid guide angle steel can cover overflow hole group, can effectively prevent the rising gas and carry the impurity into overflow hole group and cause the blockage, simultaneously, the filter screen cylinder in the connecting flange pipe can intercept the big particle impurity in the liquid, further reduces the risk of blockage;

[0018] (2) The utility model discloses a defoaming structure is set up, and the puncture needle in the defoaming structure can puncture the mist in the rising gas, makes the mist gather into liquid drop and falls down, thereby realizes the efficient mist separation, improves tower top product purity, protects subsequent equipment;

[0019] (3) The utility model discloses a liquid collecting plate is V type structure, is favorable to the convergence and orientation of liquid, and the liquid guide structure can accurately drain the liquid to each liquid collecting plate, and then through the cooperation of overflow hole group and liquid guide angle steel, realizes the uniform distribution of liquid in the rising gas groove, and further ensures that the liquid is evenly distributed to the filler layer, improves the gas-liquid mass transfer efficiency in rectifying tower;

[0020] (4) The size of the liquid collecting plate in the utility model is greater than the size of the rising gas groove, and there is a gap between the bottom of the liquid collecting plate and the top of the rising gas groove, which ensures the collection and guidance of the liquid without affecting the rising of the gas;

[0021] (5) The overflow hole group in the utility model adopts the design of different areas up and down and the structure of the liquid guide angle steel protruding the upper and lower surfaces of the rising gas groove, which is conducive to the stable overflow and distribution of the liquid under different working conditions;

[0022] (6) The utility model discloses a V-shaped groove is arranged at the top slot of the rising gas groove, which can preliminarily rectify and distribute the rising gas, and effectively avoid the blockage of solid impurities. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is another angle structural schematic diagram of the utility model;

[0025] Figure 3 It is the front view of the utility model;

[0026] Figure 4 It is the top view of the utility model;

[0027] Figure 5 It is the internal structure schematic diagram of the liquid collecting tank in the utility model;

[0028] Figure 6 It is the structural schematic diagram of the defoaming structure in the utility model;

[0029] Figure 7 It is the structural schematic diagram of the V-shaped groove in the utility model.

[0030] Reference numeral: 1 - bottom plate; 2 - locking bolt; 3 - lining ring; 4 - gas lifting groove; 5 - support plate; 6 - liquid collecting plate; 7 - liquid guide angle steel; 8 - liquid collecting tank; 9 - connecting flange pipe; 10 - liquid outlet; 11 - filter screen cylinder; 12 - upper overflow hole; 13 - lower overflow hole; 14 - fixed plate; 15 - piercing needle; 16 - V-shaped groove. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be further specifically explained below by specific embodiments in combination with the drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of variation and / or change of the utility model will fall within the scope of protection of the utility model.

[0032] Example 1:

[0033] As shown in Figure 1 , 2 , the utility model discloses a technical scheme, a kind of anti-clogging rectifying tower liquid distributor, including the bottom plate 1 of circular plate structure, bottom plate 1 is fixedly installed in the top of rectifying tower inner filler layer by multiple locking bolts 2 at edge, and bottom plate 1 and filler layer are also filled with lining ring 3 by locking bolt 2, and lining ring 3 can play the role of buffer on the one hand, reduce the direct contact and friction between liquid distributor and filler layer, avoid to cause damage to filler layer in installation or running process, further guarantee the sealing between liquid distributor and filler layer on the other hand, prevent liquid from the gap between liquid distributor and filler layer leakage or appear partial flow etc., to improve the separation efficiency of rectifying tower.

[0034] As shown in Figure 3 , 4As shown, the upper surface of the bottom plate 1 is uniformly distributed with a plurality of rows of open-ended gas slots 4, and the lower end of the gas slot 4 penetrates the lower surface of the bottom plate 1, and in this embodiment, six groups of gas slots 4 are provided from left to right, the length of the gas slot 4 gradually decreases from the center to both sides, and the six groups of gas slots 4 are integrally formed in a circular structure, and are coaxially arranged with the bottom plate 1, so that the liquid is uniformly distributed in the gas slot 4; the upper side of the gas slot 4 is fixedly provided with a liquid collecting plate 6 in a V-shaped structure through a support plate 5, and the left and right sides of the gas slot 4 are both welded with a support plate 5; the top of the support plate 5 is welded or bolted with the side wall of the liquid collecting plate 6, and the inner side wall of the gas slot 4 is welded with a plurality of vertically arranged liquid guide angle steels 7, and the notch of the liquid guide angle steel 7 faces the inner side wall of the gas slot 4; the side wall of the gas slot 4 is provided with a plurality of overflow hole groups corresponding to the liquid guide angle steel 7, and the liquid guide angle steel 7 can cover the corresponding overflow hole group, and since the liquid collecting plate 6 is in a V-shaped structure, the liquid converges to both sides and flows into the bottom plate 1, and in the process of rising, it flows into the liquid passage between the liquid guide angle steel 7 and the inner wall of the gas slot 4 through the overflow hole group, and in the gas slot 4, the liquid is guided by the liquid guide angle steel 7 and is uniformly distributed to the filler layer.

[0035] The upper side of the above-mentioned liquid collecting plate 6 is provided with a flow guide structure, which can guide the liquid into each liquid collecting plate 6.

[0036] The inner side wall of the above-mentioned gas slot 4 is also provided with a demulsification structure for separating mist in gas, which can pierce the mist in the rising gas to make the mist gather into liquid droplets and fall down, thereby realizing efficient mist separation.

[0037] Embodiment 2:

[0038] As shown in the drawings, Figure 5 The utility model discloses another technical scheme, a kind of anti-clogging rectifying column liquid distributor, and it is different from embodiment 1, flow guide structure includes inside hollow liquid collecting tank 8, liquid collecting tank 8 is vertically arranged between gas slot 4, and the top of liquid collecting tank 8 is welded with the connecting flange pipe 9 communicated with liquid pipeline, and the bottom of liquid collecting tank 8 is welded or bolted with the top of gas slot 4, and the bottom of liquid collecting tank 8 is provided with a plurality of liquid outlets 10 corresponding to liquid collecting plate 6, liquid enters liquid collecting tank 8 by connecting flange pipe 9, and after converging in liquid collecting tank 8, it flows out to liquid collecting plate 6 from liquid outlet 10.

[0039] Specifically, the inside of connecting flange pipe 9 is provided with a filter screen cylinder 11 with top opening, and the top of filter screen cylinder 11 is fixedly connected with the edge of connecting flange pipe 9 by bolts, which can filter impurities in liquid, effectively prevent impurities from directly entering overflow hole group and causing blockage, and the detachable connection facilitates cleaning and maintenance.

[0040] Embodiment 3:

[0041] AsFigure 3 、 4 The utility model discloses another technical scheme, a kind of anti-clogging rectifying column liquid distributor, different from the embodiment 1, the length of the liquid collecting plate 6 is greater than the length of the corresponding gas-lift channel 4, and the width of the liquid collecting plate 6 is greater than the width of the corresponding gas-lift channel 4, it is favorable to the stable overflow and distribution of liquid under different working conditions, and there is gap between the bottom of the liquid collecting plate 6 and the top of the gas-lift channel 4, both ensure the collection and orientation of liquid, and also do not affect the rising of gas.

[0042] Specifically, overflow hole group includes upper and lower two corresponding upper overflow hole 12 and lower overflow hole 13, and the area of upper overflow hole 12 is greater than the area of lower overflow hole 13, and the upper and lower ends of liquid guide angle steel 7 respectively protrude from the upper and lower surfaces of gas-lift channel 4, and in the embodiment, lower overflow hole 13 adopts circular hole, and upper overflow hole 12 adopts waist-shaped hole.

[0043] Embodiment 4:

[0044] As shown in Figure 6 The utility model discloses another technical scheme, a kind of anti-clogging rectifying column liquid distributor, different from the embodiment 1, the difference between the defoaming structure includes multiple groups of puncture group, and each puncture group includes fixed plate 14 welded to the inner wall of gas-lift channel 4 and several puncture needles 15 welded to the inner wall of fixed plate 14.

[0045] Specifically, each puncture group in gas-lift channel 4 is provided with multiple layers from top to bottom, and puncture needle 15 gradually inclines downward along the direction away from fixed plate 14, to effectively separate the mist in gas.

[0046] Embodiment 5:

[0047] As shown in Figure 7 The utility model discloses another technical scheme, a kind of anti-clogging rectifying column liquid distributor, different from the embodiment 1, the difference between the defoaming structure includes multiple groups of puncture group, and each puncture group includes fixed plate 14 welded to the inner wall of gas-lift channel 4 and several puncture needles 15 welded to the inner wall of fixed plate 14.

[0048] The utility model provides a kind of anti-blocking rectifying column liquid distributor, working principle as follows: liquid enters liquid collecting tank 8 by connecting flange pipe 9 and filter screen cylinder 11, after gathering in liquid collecting tank 8, from liquid outlet 10 to liquid collecting plate 6;Since liquid collecting plate 6 is V-shaped structure, liquid converges to both sides and enriches on bottom plate 1, in the process of liquid level rising, it will flow into air-lift channel 4 from overflow hole group, realize the uniform distribution of liquid in air-lift channel 4, in air-lift channel 4, liquid is guided by guide liquid angle steel 7, and then uniformly flows into packing layer;Rising gas passes through air-lift channel 4, when passing through defoaming structure, mist is pierced by piercing needle 15, and gathered into liquid drop, realize mist separation.

[0049] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A clog-resistant liquid distributor for a distillation column, comprising a base plate (1), wherein the base plate (1) is fixedly installed on the top of a packing layer inside the distillation column by locking bolts (2), and a bushing (3) is filled between the base plate (1) and the packing layer, characterized in that: The upper surface of the base plate (1) is evenly distributed with multiple rows of air-lifting grooves (4) that are open at both the top and bottom, and the lower end of the air-lifting grooves (4) passes through the lower surface of the base plate (1); a V-shaped liquid collection plate (6) is fixed above the air-lifting groove (4) by a support plate (5); multiple vertically arranged liquid-guiding angle steels (7) are installed on the inner side wall of the air-lifting groove (4), and the concave openings of the liquid-guiding angle steels (7) face the inner side wall of the air-lifting groove (4); an overflow hole group corresponding to the liquid-guiding angle steels (7) is opened on the side wall of the air-lifting groove (4), and the liquid-guiding angle steels (7) can cover the overflow hole group corresponding to them; a flow guiding structure is installed above the liquid collection plate (6), and the flow guiding structure can guide the liquid to each liquid collection plate (6); the inner side wall of the air-lifting groove (4) is also provided with a defoaming structure for separating mist in the gas.

2. The anti-clogging distillation column liquid distributor according to claim 1, characterized in that: The flow guiding structure includes a hollow liquid collection tank (8), the top of which is equipped with a connecting flange pipe (9) that communicates with the liquid pipeline, and the bottom of the liquid collection tank (8) is provided with multiple liquid outlets (10) that correspond one-to-one with the liquid collection plate (6).

3. The anti-clogging distillation column liquid distributor according to claim 2, characterized in that: The connecting flange tube (9) is provided with a filter screen cylinder (11) with an open top inside. The top of the filter screen cylinder (11) is detachably and fixedly connected to the edge of the connecting flange tube (9).

4. The anti-clogging distillation column liquid distributor according to claim 1, characterized in that: The length of the liquid collecting plate (6) is greater than the length of the corresponding air rising groove (4), and the width of the liquid collecting plate (6) is greater than the width of the corresponding air rising groove (4), and there is a gap between the bottom of the liquid collecting plate (6) and the top of the air rising groove (4).

5. The anti-clogging distillation column liquid distributor according to claim 4, characterized in that: The overflow hole group includes two corresponding upper overflow hole (12) and lower overflow hole (13), and the area of ​​the upper overflow hole (12) is larger than the area of ​​the lower overflow hole (13). The upper and lower ends of the liquid guiding angle steel (7) protrude from the upper and lower surfaces of the air rising groove (4).

6. The anti-clogging distillation column liquid distributor according to claim 1, characterized in that: The defoaming structure includes multiple puncture groups, each of which includes a fixing plate (14) installed on the inner wall of the air riser (4) and several puncture needles (15) installed on the inner wall of the fixing plate (14).

7. A clog-resistant distillation column liquid distributor according to claim 6, characterized in that: Each of the air-lift grooves (4) has multiple puncture groups from top to bottom, and the puncture needles (15) gradually tilt downwards in a direction away from the fixed plate (14).

8. The anti-clogging distillation column liquid distributor according to claim 1, characterized in that: The top opening of the air riser (4) is provided with a V-shaped groove (16) that is connected end to end.

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