Liquid phase separation device and liquid distributor

Abstract

The utility model discloses a liquid-phase separation device and a liquid distributor. The liquid-phase separation device comprises a shell, a liquid distributor and a liquid distributor, the separation assembly is arranged in the shell and used for separating the internal space of the shell into an inner cavity and a downcomer channel for conveying materials to be separated, and the inner cavity and the downcomer channel are isolated from each other; the horizontal liquid distributor is arranged in the inner cavity; the partition assembly includes: a laterally extending first plate; one end of the second plate is connected with the first plate; the third plate extends from the other end of the second plate to the inner wall of the shell; compared with the second plate and the third plate, the first plate is closer to the top of the shell; wherein an opening is formed in one side of the liquid distributor, the side of the liquid distributor is arranged on the second plate adjacent to the third plate, and a through hole is formed in the position, corresponding to the opening, of the second plate, so that materials to be separated enter the liquid distributor from the downcomer channel through the through hole and the opening. The liquid phase separation device can effectively improve the separation efficiency of the liquid phase and the liquid phase.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of liquid phase separation device and liquid distributor. BACKGROUND

[0002] Some washing towers need to be matched with liquid-liquid separator to separate mixed liquid phase (such as hydrocarbon phase and aqueous phase). For example, water quenching tower in ethylene device and some carbon capture washing towers. There are two main design schemes. One is vertical liquid-liquid separator integrated at the bottom of the washing tower, which directly separates the mixed liquid phase. The other is to configure an independent horizontal liquid-liquid separator outside the washing tower. The mixed liquid phase is pumped out from the bottom of the washing tower and separated in the horizontal liquid-liquid separator. Compared with the integrated vertical liquid-liquid separator, the horizontal liquid-liquid separator has the advantages of high separation efficiency and large processing capacity.

[0003] The existing liquid-liquid separator installed in the washing tower can cause a series of problems in liquid-liquid separation: for example, the light phase and the heavy phase are separated in the liquid settling zone, the light phase droplets float up, and the heavy phase droplets sink down, which makes the droplet floating / sinking opposite to the flow direction of the continuous phase, easily causing back mixing problem, resulting in that the processing capacity and separation efficiency are restricted.

[0004] Therefore, a liquid phase separation device capable of improving the separation efficiency of liquid-liquid two-phase is needed. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the technical problem of low separation efficiency of liquid-liquid two-phase caused by two-phase interface fluctuation and back mixing in the process of liquid-liquid two-phase separation in the prior art, and to provide a liquid phase separation device and a liquid distributor. The liquid phase separation device can effectively avoid the back mixing in the process of liquid-liquid two-phase separation, thereby improving the separation efficiency of liquid-liquid two-phase.

[0006] The utility model solves the above technical problems by the following technical solutions.

[0007] The utility model provides a kind of liquid phase separation device, the liquid phase separation device includes:

[0008] Shell;

[0009] Separation assembly arranged in the shell, for separating the internal space of the shell into inner cavity and liquid descending channel conveying material to be separated; and liquid distributor arranged in the inner cavity in horizontal state;

[0010] The separation assembly includes:

[0011] First plate extending transversely;

[0012] at least one second plate extending vertically, one end of the second plate being connected to the first plate;

[0013] a third plate extending from the other end of the second plate to the inner wall of the shell;

[0014] the first plate is closer to the top of the shell than the second plate and the third plate;

[0015] wherein one side of the liquid distributor is provided with an opening, the side being provided on the second plate adjacent to the third plate, the second plate being provided with a through hole corresponding to the position of the opening to enable the material to be separated to enter the liquid distributor from the downcomer through the through hole and the opening.

[0016] In the utility model, one end of the second plate is connected to the first plate, and the other end is connected to the third plate, and the two sides of the second plate abut against the inner wall of the shell.

[0017] In the utility model, preferably, the separation assembly comprises two second plates extending vertically, one end of each second plate is connected to the first plate, and the inner wall surface of the shell, the second plate and the third plate enclose two downcomers which are symmetrically distributed along the axis of the liquid phase separation device.

[0018] Two symmetrically distributed downcomers or more symmetrically distributed downcomers are formed, which is advantageous to alleviate the problem of uneven distribution of feed liquid compared with a single downcomer. For individual extreme scenarios, four downcomers can be used.

[0019] In the utility model, preferably, the ratio of the vertical distance between the liquid distributor and the first plate to the inner diameter of the shell is 0.3-3, optionally 1-3, for example 2 or 1.

[0020] The ratio of the vertical distance between the liquid distributor and the first plate to the inner diameter of the shell in the above range can further promote stable control, reduce back mixing and improve separation efficiency; if less than 0.3, the space is relatively small, which shortens the residence time of the liquid phase and is not conducive to liquid level measurement and control; if greater than 3, the cost increases significantly.

[0021] In the utility model, preferably, the percentage of the installation height of the liquid distributor to the installation height of the first plate is 1%-80%, optionally 10%-30% or 50%-80%, for example 20%, 60% or 70%; the installation height of the liquid distributor is the vertical distance between the liquid distributor and the lowest point of the constant diameter section of the shell, and the installation height of the first plate is the vertical distance between the first plate and the lowest point of the constant diameter section of the shell. The shell comprises a section with equal inner diameters, which is the constant diameter section of the shell.

[0022] The lower the installation height of the liquid distributor accounts for the percentage of the installation height of the first plate, the more suitable it is for the working condition where the light phase proportion in the mixed feed is higher than the heavy phase, such as longer residence / control time. Conversely, it is suitable for the working condition where the heavy phase proportion is high.

[0023] In the utility model, preferably, the liquid distributor is provided with at least one distribution unit; the distribution unit is symmetrically distributed along the axis of the partition assembly; the distribution unit comprises a distribution pipe with an open structure at one end and a closed structure at the other end; the end of the distribution unit provided with the open structure is on the second plate adjacent to the third plate, and the bottom of the distribution pipe is provided with at least one opening.

[0024] Preferably, the liquid distributor is provided with 1-20 distribution units, and optionally 2-20 distribution units. Preferably, the distribution units are symmetrically distributed along the axis of the partition assembly.

[0025] Preferably, the distribution pipe is symmetrically distributed in structure.

[0026] Preferably, the opening of the distribution pipe is circular and / or polygonal.

[0027] Preferably, the polygon is rectangular or triangular, preferably rectangular.

[0028] The rectangular opening can expand the applicable scenarios.

[0029] Preferably, the opening ratio of the opening is 5%-200%, for example, 100%; wherein the opening ratio = the area of the opening / the cross-sectional area of the distribution pipe.

[0030] If the opening ratio is less than 5%, the risk of blockage will increase; if the opening ratio is higher than 200%, the distribution quality of the liquid may be affected.

[0031] Preferably, the distribution unit further comprises an inverted V-shaped baffle and two side plates; the distribution pipe is arranged in the middle of the two side plates and is centrally arranged, and the inverted V-shaped baffle is arranged in the middle of the two side plates and is centrally arranged; the edge of the inverted V-shaped baffle is close to the lowest edge of the distribution pipe, and the edge of the inverted V-shaped baffle and the distribution pipe are fixedly connected; the two side plates form a distribution space, and the distribution space accommodates the distribution pipe and the inverted V-shaped baffle.

[0032] The inverted V-shaped baffle is beneficial to improving the distribution quality of the material to be separated and reducing the disturbance of the material to be separated to the separation of the light and heavy phases.

[0033] The edge of the side plate is provided with a toothed structure, and the side plate is beneficial to the separation of the liquid drops.

[0034] In some specific embodiments, the specific manner of fixed connection of the edge of the inverted V-shaped baffle and the distribution pipe can be that the bottom of the distribution pipe is provided with a support beam, the other end of the support beam is connected with the edge of the inverted V-shaped baffle, or the bottom of the distribution pipe and the edge of the inverted V-shaped baffle are fixedly connected through welding or bolts, or the bottom of the distribution pipe is provided with a support, the other end of the support is connected with the edge of the inverted V-shaped baffle, or the bottom of the distribution pipe is provided with a support base, the other end of the support base is connected with the edge of the inverted V-shaped baffle.

[0035] In the utility model, preferably, the third plate is arranged in an upward inclination, and the inclination angle of the upward inclination is less than 45°, preferably 10°-20°.

[0036] The inclination angle is less than 45°, which is beneficial to reducing the deposition of solid impurities.

[0037] In the utility model, preferably, the ratio of the installation height of the first plate to the inner diameter of the shell is 0.5-3, for example, 1.5 or 2.

[0038] The ratio of the installation height of the first plate to the inner diameter of the shell in the above range can further meet the requirements of separation of the light and heavy phases and control of the two-phase interface, and improve the separation efficiency.

[0039] In the utility model, preferably, the inner wall surface of the shell, the second plate and the third plate enclose a downcomer, and the ratio of the maximum width of the downcomer in the horizontal direction to the diameter of the shell is 0.1-0.33, for example, 0.15.

[0040] The ratio of the maximum width of the downcomer in the horizontal direction to the diameter of the shell is less than 0.1, which is easy to cause the downcomer space to be too small, resulting in a small flow of the material to be separated.

[0041] The utility model discloses, preferably, the top of shell is equipped with feed inlet, the bottom of shell is equipped with heavy phase discharge port, the lateral wall of shell is equipped with light phase discharge port, the light phase discharge port is linked with the inside of inner cavity, and the liquid distributor is equipped with below the light phase discharge port.

[0042] Preferably, the liquid separation device further comprises a coalescing element.

[0043] The coalescing element can be used to separate the material twice, thereby improving the separation efficiency.

[0044] The coalescing element is arranged inside the inner cavity and above the liquid distributor and below the light phase discharge port.

[0045] Alternatively, the coalescing element is arranged outside the inner cavity and between the liquid distributor and the bottom of the shell.

[0046] Preferably, the coalescing element comprises a wire mesh structure and / or a corrugated structure.

[0047] Preferably, the liquid distributor and the second plate are connected through flanges.

[0048] Alternatively, the liquid distributor and the second plate are connected through bolts.

[0049] Alternatively, the liquid distributor is connected through a support beam, which is arranged above or below the liquid distributor and fixed to the shell.

[0050] Preferably, the first plate is provided with a gas outlet for discharging the gas generated in the inner cavity.

[0051] The utility model also provides a liquid distributor, which is used in the liquid separation device as described above, and is provided with at least one distribution unit.

[0052] Preferably, the distribution unit is symmetrically distributed along the axis of the partition assembly.

[0053] Preferably, the distribution unit is provided with a circular and / or polygonal opening.

[0054] Preferably, the polygon is rectangular and / or triangular.

[0055] Preferably, the distribution unit further comprises an inverted V-shaped baffle and two side plates; the distribution pipe is arranged in the middle of the two side plates and is centrally arranged, and the inverted V-shaped baffle is arranged in the middle of the two side plates and is centrally arranged; the edge of the inverted V-shaped baffle is close to the lowest edge of the distribution pipe, and the edge of the inverted V-shaped baffle is fixedly connected with the distribution pipe; the two side plates form a distribution space, and the distribution space accommodates the distribution pipe and the inverted V-shaped baffle.

[0056] The inverted V-shaped baffle is beneficial to improving the distribution quality of the material to be separated and reducing the disturbance of the material to be separated to the separation of the light and heavy phases.

[0057] Preferably, the edge of the side plate is provided with a V-shaped tooth structure and / or a rectangular tooth structure.

[0058] The edge of the side plate is provided with a tooth structure, and the side plate is beneficial to the separation of the liquid drops from the distributor.

[0059] Preferably, the opening ratio of the opening is 5%-200%, for example, 100%; the opening ratio = the area of the opening / the cross-sectional area of the distribution pipe.

[0060] When the opening ratio is less than 5%, the risk of blockage is increased; and when the opening ratio is higher than 200%, the distribution quality of the liquid is affected.

[0061] The liquid distributor is provided with 1-20 distribution units, and optionally 2-20 distribution units; preferably, the distribution units are symmetrically distributed along the axis of the separation assembly.

[0062] The positive progress effect of the utility model lies in that:

[0063] The distribution plate is arranged at a specific position of the liquid-phase separation device, the material to be separated passes through the inner wall surface of the shell, the second plate and the third plate to form a downcomer, passes through the through hole of the second plate and the opening on one side of the liquid distributor to enter the liquid distributor, and is preliminarily separated in the distribution space in the liquid distributor (such as the distribution space formed by the distribution pipe, the inverted V-shaped baffle and the side plate). The downcomer and the liquid distributor enable the material to be separated to be uniformly distributed on the cross section of the tower, thereby reducing the disturbance of the feed to the separation of the light and heavy phases of the material to be separated, and being beneficial to the separation of the two phases. In combination with the coalescing element suitable for the liquid-phase separation device of the utility model, the separation efficiency of the liquid-liquid two phases can be further improved. Attached Figure Description

[0064] Figure 1 This is a three-dimensional structural schematic diagram of the liquid phase separation device according to Embodiment 1 of the present invention.

[0065] Figure 2 This is a front view of a three-dimensional structural schematic diagram of a liquid phase separation device according to Embodiment 1 of the present invention.

[0066] Figure 3 According to Embodiment 1 of this utility model, the liquid phase separation device is as follows: Figure 2 A schematic diagram of section AA.

[0067] Figure 4 This is a partially enlarged schematic diagram of the distribution unit according to Embodiment 1 of the present invention.

[0068] Figure 5 This is a three-dimensional structural diagram of the distribution unit according to Embodiment 1 of the present invention.

[0069] Figure 6 This is a schematic diagram of the liquid phase separation device according to Embodiment 2 of the present invention.

[0070] Figure 7 This is a schematic diagram of the liquid phase separation device of Comparative Example 1 of the prior art.

[0071] Figure 8 This is a schematic diagram of the liquid phase separation device of Comparative Example 2 of the prior art.

[0072] The attached figures are labeled as follows:

[0073] 1-Shell; 2-Liquid distributor; 3-First plate; 4-Second plate; 5-Third plate; 6-Inlet; 7-Dense phase outlet; 8-Light phase outlet; 9-Coalescing element; 10-Flange; 11-Gas outlet; 12-Downflow channel;

[0074] 201-Distribution Unit;

[0075] 2011 - Distribution pipe; 2012 - Rectangular opening; 2013 - Inverted V-shaped baffle; 2014 - Side plate;

[0076] 13-Gas-liquid interface control zone; 14-Light phase / heavy phase interface control zone; 15-Liquid collector. Detailed Implementation

[0077] The present invention will be described more clearly and completely below with reference to the accompanying drawings and some preferred embodiments.

[0078] Example 1

[0079] A perspective view of the liquid phase separation device of the present embodiment is shown in Figure 1 A front view of the perspective view of the liquid phase separation device of the present embodiment is shown in Figure 2 which comprises:

[0080] a housing 1;

[0081] a partition assembly arranged in the housing 1 for partitioning the interior space of the housing 1 into an inner cavity and a downcomer 12 for conveying the material to be separated; and a liquid distributor 2 arranged horizontally in the inner cavity.

[0082] The partition assembly comprises:

[0083] a first plate 3 extending transversely;

[0084] two second plates 4 extending vertically, each of the second plates 4 being connected to the first plate 3 at one end, a third plate 5 extending from the other end of the second plate 4 to the inner wall of the housing 1, the first plate 3 being closer to the top of the housing 1 than the second plate 4 and the third plate 5, the inner wall of the housing 1, the second plate 4 and the third plate 5 enclosing two downcomers 12 which are symmetrically distributed along the axis of the liquid phase separation device, the ratio of the maximum width of the downcomer 12 in the horizontal direction to the diameter of the housing 1 being 0.15.

[0085] Figure 2 A schematic view along the section A-A is shown in Figure 3 wherein one side of the liquid distributor 2 is provided with an opening, the side being arranged on the second plate 4 adjacent to the third plate 5, the second plate 4 being provided with a through hole corresponding to the position of the opening so that the material to be separated passes through the through hole and the opening into the liquid distributor 2.

[0086] The liquid distributor 2 is provided with eight distribution units 201; a partial enlarged view of the distribution unit 201 is shown in Figure 4 and a perspective view of the distribution unit 201 is shown in Figure 5As shown, the distribution units 201 are symmetrically distributed along the axis of the partition assembly; the distribution unit 201 comprises a distribution pipe 2011 with an open structure at one end and a closed structure at the other end, and the distribution unit 201 is provided with the open structure at the second plate 4 adjacent to the third plate 5; the bottom of the distribution pipe 2011 is provided with seven rectangular openings 2012, and the opening ratio of the rectangular openings 2012 is 100%, and the number of the rectangular openings 2012 can be determined according to actual needs, and in other optional embodiments, the opening ratio can be 5%-200%; wherein the opening ratio = the area of the opening / the cross-sectional area of the distribution pipe; the distribution unit 201 further comprises a reverse V-shaped baffle 2013 and two side plates 2014; the distribution pipe 2011 is arranged in the middle of the two side plates 2014 and is centrally arranged, and the reverse V-shaped baffle 2013 is arranged in the middle of the two side plates 2014 and is centrally arranged; the edge of the reverse V-shaped baffle 2013 is close to the lowest edge of the distribution pipe 2011, and the edge of the reverse V-shaped baffle 2013 and the distribution pipe 2011 are fixedly connected (for example, a support beam can be used, that is, the bottom of the distribution pipe 2011 is provided with a support beam, and the other end of the support beam is connected with the edge of the reverse V-shaped baffle 2013, and this fixed connection mode is not shown in the figure); the two side plates 2014 form a distribution space, and the distribution space accommodates the distribution pipe 2011 and the reverse V-shaped baffle 2013. Figure 5

[0087] The edge of the side plate 2014 is provided with a rectangular tooth structure.

[0088] The vertical distance between the liquid distributor 2 and the first plate 3 and the inner diameter of the shell 1 is 1; the installation height of the liquid distributor 2 accounts for 20% of the installation height of the first plate 3; the installation height of the liquid distributor 2 is beneficial to provide more tower space for position control and light phase materials.

[0089] The installation height of the liquid distributor 2 is the vertical distance from the liquid distributor 2 to the plane where the lowest point of the constant diameter section of the shell 1 is located, and the installation height of the first plate 3 is the vertical distance from the first plate 3 to the plane where the lowest point of the constant diameter section of the shell 1 is located.

[0090] The third plate 5 is arranged to be inclined upward, and the inclination angle of the upward inclination is 20°; the ratio of the installation height of the first plate 3 to the inner diameter of the shell 1 is 1.5; generally, the larger the ratio, the larger the space for separation, the better the separation effect, but the higher the cost.

[0091] The ratio of the maximum width of the downcomer 12 in the horizontal direction to the diameter of the shell 1 is 0.15.

[0092] The top of the shell 1 is provided with a feed inlet 6, the bottom of the shell 1 is provided with a heavy phase outlet 7, the side wall of the shell 1 is provided with a light phase outlet 8, the light phase outlet 8 communicates with the inside of the inner cavity, and the liquid distributor 2 is arranged below the light phase outlet 8. ​

[0093] The liquid phase separation device is also provided with a coalescing element 9; the coalescing element 9 is arranged inside the inner cavity and above the liquid distributor 2 and below the light phase outlet 8; the coalescing element 9 comprises a wire mesh structure; in other alternative embodiments, the coalescing element 9 can also comprise a wire mesh structure and / or a metal corrugated plate structure.

[0094] The first plate 3 is provided with a gas outlet 11 for discharging the gas generated in the inner cavity.

[0095] The liquid distributor 2 and the second plate 4 are connected by a flange 10.

[0096] Example 2

[0097] The structure of the liquid phase separation device of the present embodiment is shown in the schematic view as Figure 6 which comprises:

[0098] a housing 1;

[0099] a partition assembly arranged in the housing 1 for partitioning the inner space of the housing 1 into an inner cavity and a downcomer 12 for conveying the material to be separated; and a liquid distributor 2 arranged horizontally in the inner cavity.

[0100] The partition assembly comprises:

[0101] a first plate 3 extending transversely;

[0102] two second plates 4 extending vertically, one end of each second plate 4 being connected to the first plate 3; a third plate 5 extending from the other end of the second plate 4 to the inner wall of the housing 1; the first plate 3 is closer to the top of the housing 1 than the second plate 4 and the third plate 5; the inner wall of the housing 1, the second plate 4 and the third plate 5 enclose two downcomers 12 which are symmetrically distributed along the axis of the liquid phase separation device; the ratio of the maximum width of the downcomer 12 in the horizontal direction to the diameter of the housing 1 is 0.3.

[0103] The liquid distributor 2 is provided with an opening on one side, which is arranged on the second plate 4 adjacent to the third plate 5; the second plate 4 is provided with a through hole corresponding to the position of the opening so that the material to be separated passes through the through hole and the opening into the liquid distributor 2.

[0104] The structure of the liquid distributor 2 is the same as that in Embodiment 1, and the liquid distributor 2 is provided with eight distribution units 201; the distribution units 201 are symmetrically distributed along the axis of the partition assembly; the distribution unit 201 comprises a distribution pipe 2011 with an open structure at one end and a closed structure at the other end, and the distribution unit 201 is provided with the end with the open structure on the second plate 4 adjacent to the third plate 5; the bottom of the distribution pipe 2011 is provided with seven rectangular openings 2012, and the opening ratio of the rectangular openings 2012 is 100%, and the number of the rectangular openings 2012 can be determined according to actual needs, and in other optional embodiments, the opening ratio can be 5%-200%; the distribution unit 201 further comprises a reverse V-shaped baffle 2013 and two side plates 2014.

[0105] The edges of the reverse V-shaped baffle 2013 are connected to the lowest edges of the distribution pipe 2011, and the side of the reverse V-shaped baffle 2013 close to the second plate 4 is connected to the second plate 4 through the flange 10; the two side plates 2014 enclose a distribution space, and the distribution space accommodates the distribution pipe 2011 and the reverse V-shaped baffle 2013; the distribution pipe 2011 is arranged in the middle of the two side plates 2014 and is centrally arranged, and the reverse V-shaped baffle 2013 is arranged in the middle of the two side plates 2014 and is centrally arranged; the edges of the reverse V-shaped baffle 2013 are close to the lowest edges of the distribution pipe 2011, and the edges of the reverse V-shaped baffle 2013 are fixedly connected to the distribution pipe 2011 (for example, a support beam can be used, that is, the bottom of the distribution pipe 2011 is provided with a support beam, and the other end of the support beam is connected to the edges of the reverse V-shaped baffle 2013); the two side plates 2014 enclose a distribution space, and the distribution space accommodates the distribution pipe 2011 and the reverse V-shaped baffle 2013.

[0106] The edges of the side plates 2014 are provided with rectangular tooth structures.

[0107] The ratio of the vertical distance between the liquid distributor 2 and the first plate 3 to the inner diameter of the shell 1 is 0.3; in other optional embodiments, the ratio of the vertical distance between the liquid distributor 2 and the first plate 3 to the inner diameter of the shell 1 can be 0.3-0.5; the percentage of the installation height of the liquid distributor 2 to the installation height of the first plate 3 is 60%; in other optional embodiments, the percentage of the installation height of the liquid distributor 2 to the installation height of the first plate 3 is 50%-60%; in other optional embodiments, the percentage of the installation height of the liquid distributor 2 to the installation height of the first plate 3 can be up to 80%; the installation height of the liquid distributor 2 is the vertical distance from the liquid distributor 2 to the plane where the lowest point of the constant diameter section of the shell 1 is located, and the installation height of the first plate 3 is the vertical distance from the first plate 3 to the plane where the lowest point of the constant diameter section of the shell 1 is located.

[0108] The third plate 5 is arranged to be inclined upward, and the inclination angle of the upward inclination is 20°; the ratio of the installation height of the first plate 3 to the inner diameter of the shell 1 is 1.5.

[0109] The ratio of the maximum width of the downcomer 12 in the horizontal direction to the diameter of the shell 1 is 0.15;

[0110] The top of the shell 1 is provided with a feed inlet 6, the bottom of the shell 1 is provided with a heavy phase outlet 7, and the sidewall of the shell 1 is provided with a light phase outlet 8, which communicates with the inside of the inner cavity, and the liquid distributor 2 is arranged below the light phase outlet 8.

[0111] The liquid phase separation device is also provided with a coalescing element 9; the coalescing element 9 is arranged outside the inner cavity and between the liquid distributor 2 and the bottom of the shell 1; the coalescing element 9 comprises a wire mesh structure; in other optional embodiments, the coalescing element 9 can also comprise a wire mesh structure and / or a metal corrugated plate structure.

[0112] The first plate 3 is provided with a gas outlet 11 for discharging the gas generated in the inner cavity.

[0113] The liquid distributor 2 and the second plate 4 are connected by a flange 10.

[0114] Comparative Example 1

[0115] Comparative Example 1 adopts one of the schemes in the prior art, and the structural diagram of the liquid phase separation device is as shown in Figure 7 which comprises a shell 1 and a feed inlet 6 arranged on the sidewall of the shell 1, a heavy phase outlet 7 arranged on the bottom of the shell 1, and a light phase outlet 8 arranged on the sidewall of the shell 1, the position of the feed inlet 6 is higher than that of the light phase outlet 8, a liquid collector 15 is arranged near the position of the feed inlet 6 inside the shell 1, the liquid collector 15 is provided with a gas outlet 11, the liquid collector 15 is provided with a downcomer 12 in the direction away from the feed inlet 6, the middle part of the downcomer 12 is in a gas-liquid interface control zone 13, and the end of the downcomer 12 is in a light phase / heavy phase interface control zone 14.

[0116] For the scheme of Comparative Example 1, the material to be treated is transported to the light phase / heavy phase interface control zone 14 (i.e. the interface between the light phase and the heavy phase) through the liquid collector 15 and the downcomer 12, and the distribution quality of the material to be treated at the light phase / heavy phase interface control zone 14 is not good due to the absence of a liquid distribution device, and the high flow rate in the downcomer 12 can disturb the interface between the light phase and the heavy phase, and even cause back mixing, i.e. the light phase material enters the separated heavy phase region under the action of the high flow rate. In addition, the column diameter of the scheme of Comparative Example 1 is relatively small, and it is difficult to install the coalescing element 9 in the downcomer (i.e. the downcomer 12).

[0117] Comparative Example 2

[0118] Comparative Example 2 adopts one of the schemes in the prior art, and the structural diagram of the liquid phase separation device is as shown in Figure 8As shown, it comprises a shell 1 and a feed inlet 6 provided on the side wall of the shell 1, a heavy phase outlet 7 provided on the bottom of the shell 1 and a light phase outlet 8 provided on the side wall of the shell 1, the position of the feed inlet 6 is higher than that of the light phase outlet 8, a liquid collector 15 is provided on the inside of the shell 1 near the position of the feed inlet 6, one side of the liquid collector 15 is provided with a gas outlet 11, the other side of the liquid collector 15 is connected with a coalescing element 9, one side of the coalescing element 9 and the inside of the shell 1 enclose a downcomer 12, the middle part of the coalescing element 9 is located in a light phase / heavy phase interface control area 14, and there is a gas-liquid interface control area 13 between the feed inlet 6 and the liquid collector 15. The coalescing element 9 is an inclined plate coalescer, which is a group of inclined or parallel thin steel plates, and the conventional thickness of the thin steel plates is 1-2 mm.

[0119] For the scheme of Comparative Example 2, the light phase / heavy phase interface control area 14 (i.e. the interface between the light phase and the heavy phase) is in the middle part of the coalescing element 9, the upper part of the interface is a separated light phase area, and the lower part is a heavy phase area. The material to be separated enters the inlet of the coalescing element 9 (containing a perforated plate) through a single side of the downcomer 12 (as shown on the left side of the coalescing element 9), so that the mixed liquid phase of the feed will enter the separated light phase area and the heavy phase area, the light phase droplets float up, and the heavy phase droplets sink down, which will make the floating / sinking of the droplets opposite to the flow direction of the continuous phase, and easily cause the back mixing. Figure 8 The coalescing element 9 of the liquid-liquid separator in the prior art cannot effectively avoid the disturbance to the interface between the light phase and the heavy phase, which restricts the processing capacity and the separation efficiency. The above scheme provided by the utility model, such as the schemes of Embodiment 1 and Embodiment 2, adopts a specially designed downcomer 12 and a liquid distributor 2, so that the material to be separated can be uniformly distributed to the interface between the light phase and the heavy phase, thereby effectively alleviating the disturbance of the feed to the interface between the light phase and the heavy phase, and improving the separation efficiency of the liquid-liquid two-phase, and in combination with the coalescing element 9 suitable for the liquid phase separation device of the utility model, the separation efficiency of the liquid-liquid two-phase can be further improved.

[0120] The liquid-liquid separator in the prior art cannot effectively avoid the disturbance to the interface between the light phase and the heavy phase, which restricts the processing capacity and the separation efficiency. The above scheme provided by the utility model, such as the schemes of Embodiment 1 and Embodiment 2, adopts a specially designed downcomer 12 and a liquid distributor 2, so that the material to be separated can be uniformly distributed to the interface between the light phase and the heavy phase, thereby effectively alleviating the disturbance of the feed to the interface between the light phase and the heavy phase, and improving the separation efficiency of the liquid-liquid two-phase, and in combination with the coalescing element 9 suitable for the liquid phase separation device of the utility model, the separation efficiency of the liquid-liquid two-phase can be further improved.

Claims

1. A liquid phase separation device, characterized in that, The liquid phase separation device includes: case; A partition assembly disposed within the housing is used to divide the internal space of the housing into mutually isolated inner cavities and a descending channel for conveying materials to be separated; and a horizontal liquid distributor disposed within the inner cavity; The separation component includes: The first board extending laterally; At least one vertically extending second plate, one end of which is connected to the first plate; A third plate extends from the other end of the second plate to the inner wall of the housing; The first plate is closer to the top of the housing than the second and third plates; The liquid distributor has an opening on one side, which is located on the second plate adjacent to the third plate. The second plate has a through hole corresponding to the opening so that the material to be separated enters the liquid distributor from the liquid drop channel through the through hole and the opening.

2. The liquid phase separation device as described in claim 1, characterized in that, The separating component includes two vertically extending second plates, one end of each second plate being connected to the first plate. The inner wall of the housing, the second plate, and the third plate enclose and form two descending channels symmetrically distributed along the axis of the liquid phase separation device.

3. The liquid phase separation device as described in claim 1, characterized in that, The ratio of the vertical distance between the liquid distributor and the first plate to the inner diameter of the housing is 0.3-3.

4. The liquid phase separation device as described in claim 1, characterized in that, The installation height of the liquid distributor is 1%-80% of the installation height of the first plate; the installation height of the liquid distributor is the vertical distance between the lowest point of the equal-diameter section of the liquid distributor and the plane containing the housing, and the installation height of the first plate is the vertical distance between the lowest point of the equal-diameter section of the first plate and the plane containing the lowest point of the equal-diameter section of the housing.

5. The liquid phase separation device as described in claim 1, characterized in that, The liquid distributor is provided with at least one distribution unit; the distribution units are symmetrically distributed along the axis of the separating component; the distribution unit includes a distribution tube with an open structure at one end and a closed structure at the other end; the end of the distribution unit with the open structure is on the second plate adjacent to the third plate, and the bottom of the distribution tube is provided with at least one opening.

6. The liquid phase separation device as described in claim 5, characterized in that, The distribution pipes have a symmetrical structure.

7. The liquid phase separation device as described in claim 5, characterized in that, The opening of the distribution pipe is circular and / or polygonal.

8. The liquid phase separation device as described in claim 7, characterized in that, The polygon is a rectangle and / or a triangle.

9. The liquid phase separation device as described in claim 5, characterized in that, The distribution unit further includes an inverted V-shaped baffle and two side plates; the distribution pipe is located between the two side plates and is centrally positioned; the edge of the inverted V-shaped baffle is close to the lowest edge of the distribution pipe, and the edge of the inverted V-shaped baffle is fixedly connected to the distribution pipe; the two side plates enclose a distribution space, which accommodates the distribution pipe and the inverted V-shaped baffle.

10. The liquid phase separation apparatus as described in claim 9, characterized in that, The edges of the side plates are provided with V-shaped toothed structures and / or rectangular toothed structures.

11. The liquid phase separation device as described in claim 5, characterized in that, The opening ratio of the opening is 5%-200%.

12. The liquid phase separation device as described in claim 5, characterized in that, The liquid distributor has 1-20 dispensing units; the dispensing units are symmetrically distributed along the axis of the separating component.

13. The liquid phase separation device as described in claim 1, characterized in that, It meets one or more of the following conditions: a. The third plate is tilted upwards at an angle of less than 45°; b. The ratio of the installation height of the first plate to the inner diameter of the housing is 0.5-3; c. The inner wall of the shell, the second plate, and the third plate enclose a liquid-falling channel, and the ratio of the maximum width of the liquid-falling channel in the horizontal direction to the diameter of the shell is 0.1-0.

33.

14. The liquid phase separation apparatus as described in claim 13, characterized in that, In condition a, the upward tilt angle of the third plate is 10°-20°.

15. The liquid phase separation apparatus as described in claim 1, characterized in that, The top of the housing is provided with a feed inlet, the bottom of the housing is provided with a heavy phase discharge outlet, the side wall of the housing is provided with a light phase discharge outlet, the light phase discharge outlet is connected to the interior of the inner cavity, and the liquid distributor is located below the light phase discharge outlet.

16. The liquid phase separation apparatus as described in claim 15, characterized in that, The liquid phase separation device is also equipped with a coalescing element; The coalescing element is located inside the inner cavity, above the liquid distributor and below the light phase outlet. Alternatively, the coalescing element may be located outside the inner cavity and between the liquid distributor and the bottom of the housing.

17. The liquid phase separation apparatus as described in claim 16, characterized in that, The coalescing element includes a wire mesh structure and / or a corrugated structure.

18. The liquid phase separation apparatus as described in claim 1, characterized in that, The liquid distributor and the second plate are connected by a flange; Alternatively, the liquid distributor and the second plate can be connected by bolts; Alternatively, the liquid distributor may be suspended or supported by a support beam; wherein the support beam is arranged parallel to the liquid distributor above or below it and is fixedly connected to the housing.

19. The liquid phase separation apparatus as described in claim 1, characterized in that, A gas outlet is provided on the first plate, which is used to discharge the gas generated in the inner cavity.

20. A liquid distributor for use in a liquid phase separation apparatus as described in any one of claims 1-19, characterized in that, The liquid distributor is provided with at least one distribution unit; the distribution units are symmetrically distributed along the axis of the separating component; the distribution unit includes a distribution tube with an open structure at one end and a closed structure at the other end; the end of the distribution unit with the open structure is on the second plate adjacent to the third plate, and the bottom of the distribution tube is provided with at least one opening.

21. The liquid distributor as claimed in claim 20, characterized in that, The distribution pipes have a symmetrical structure.

22. The liquid distributor as claimed in claim 20, characterized in that, The opening of the distribution pipe is circular and / or polygonal.

23. The liquid distributor as claimed in claim 22, characterized in that, The polygon is a rectangle and / or a triangle.

24. The liquid distributor as claimed in claim 20, characterized in that, The distribution unit further includes an inverted V-shaped baffle and two side plates; the distribution pipe is located between the two side plates and is centrally positioned; the edge of the inverted V-shaped baffle is close to the lowest edge of the distribution pipe, and the edge of the inverted V-shaped baffle is fixedly connected to the distribution pipe; the two side plates enclose a distribution space, which accommodates the distribution pipe and the inverted V-shaped baffle.

25. The liquid distributor as claimed in claim 24, characterized in that, The edges of the side plates are provided with V-shaped toothed structures and / or rectangular toothed structures.

26. The liquid distributor as claimed in claim 20, characterized in that, The opening ratio of the opening is 5%-200%.

27. The liquid distributor as claimed in claim 20, characterized in that, The liquid distributor has 1-20 dispensing units; the dispensing units are symmetrically distributed along the axis of the separating component.

Images