Fiber liquid film contactor

Abstract

The utility model discloses a fiber liquid film contactor which comprises a liquid film contactor shell and a separation tank, the liquid film contactor shell is internally provided with liquid film cellosilk used for being in contact with two-phase substances; a separation cavity, a phase separation assembly and a phase separation cavity are sequentially arranged in the separation tank in the flowing direction of fluid, the separation tank is arranged below the liquid film contactor shell, and the liquid film contactor shell is communicated with the separation cavity; the phase-splitting assembly comprises a distribution pore plate, a flow guide plate and a mixed-weaving silk screen coalescence piece which are sequentially arranged in the flowing direction of fluid, and the upper end and the lower end of the phase-splitting cavity sequentially communicate with the first outlet and the second outlet. According to the utility model, two-phase substances are uniformly distributed through the distribution pore plate and the flow guide plate and slowly pass through the mixed weaving silk screen coalescence piece; under the action of the mixed weaving silk screen coalescence piece, a free water phase in the oil phase and a free oil phase in the water phase are coalesced and separated, so that the two-phase separation speed is accelerated, and two-phase substances are arranged in the phase separation cavity in a layered manner.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid membrane contactor technical field especially relates to a kind of fibre liquid membrane contactors. BACKGROUND

[0002] Fiber liquid membrane contactor, or fiber membrane contactor, fiber membrane reactor, etc., is widely used in the mass transfer process of oil-water or gas-liquid two-phase chemical reaction, physical extraction, etc. in petrochemical industry. A large number of very fine long fibers are filled in the device, and a very thin liquid film is formed on the surface of the fiber by using water phase. The oil phase or gas phase is dispersed into an oil phase or gas film by the fiber, the contact area of the two phases is greatly increased, the diffusion distance of the solute in the phase is greatly shortened, and the mass transfer efficiency of the two phases is improved by several orders of magnitude compared with the contact mode of droplets, thereby greatly improving the reaction rate or extraction rate of the two phases. After reaction or extraction in the fiber liquid membrane contactor, the two phases flow into the separation tank and are separated by using the polarity difference and density difference between the two phases. However, the separation effect of the separation tank is poor and depends on the polarity difference and density difference between the two phases. SUMMARY

[0003] The utility model aims to provide a kind of fiber liquid membrane contactor to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides a kind of fiber liquid membrane contactor, including liquid membrane contactor shell and separation tank;The liquid membrane contactor shell is internally provided with liquid membrane fiber for the contact of two-phase material;The separation tank is sequentially provided with separation cavity, phase separation assembly and phase separation cavity according to fluid flow direction in the inside, the separation tank is arranged below the liquid membrane contactor shell, and the liquid membrane contactor shell is communicated with the separation cavity;The phase separation assembly includes distribution hole plate, flow guide plate and mixed wire mesh coalescing element arranged sequentially according to fluid flow direction, and the phase separation cavity is sequentially communicated with first outlet and second outlet at upper and lower ends.

[0005] Optionally, the distribution hole plate includes a first plate body detachably connected with the liquid membrane contactor shell, a plurality of through holes are formed on the first plate body, and the through holes are distributed axially along the fluid flow direction.

[0006] Optionally, the flow guide plate includes a first shell detachably connected with the liquid membrane contactor shell, a plurality of groups of corrugated plates are arranged in parallel in the first shell, and the corrugated plates are arranged along the fluid flow direction.

[0007] Optionally, the mixed wire mesh coalescing element includes hydrophilic wire mesh and oleophilic wire mesh.

[0008] Optionally, a fiber silk suspender is detachably connected inside the liquid membrane contactor shell, the fiber silk suspender is perpendicular to the central axis of the liquid membrane contactor shell, one end of the liquid membrane fiber silk is detachably connected with the fiber silk suspender, and the liquid membrane fiber silk is arranged in a drooping manner under the action of gravity.

[0009] Optionally, a distributor is detachably connected inside the liquid membrane contactor shell, the distributor is arranged on the side of the fiber silk suspender away from the liquid membrane fiber silk, and the distributor is perpendicular to the central axis of the liquid membrane contactor shell; a first feeding port for supplying liquid phase substances is in communication with the feeding end of the distributor; and the liquid membrane contactor shell is further connected with a second feeding port, the second feeding port is arranged on the side of the distributor away from the liquid membrane fiber silk, and the second feeding port is used for supplying oil phase substances or gas phase substances.

[0010] Optionally, the liquid membrane contactor shell is vertically arranged, and the liquid membrane contactor shell is vertically arranged with the separation tank, and the discharging end of the liquid membrane contactor shell extends into the separation cavity of the separation tank.

[0011] Optionally, the distributor comprises a first pipeline, a plurality of second pipelines are in communication with the first pipeline, all the second pipelines are arranged on the same plane, and the plane is vertically arranged with the central axis of the liquid membrane contactor shell; and the discharging holes are arranged on the side of the first pipeline and the second pipelines close to the liquid membrane fiber silk.

[0012] Optionally, the liquid membrane fiber silk is in one of a corrugated shape and a spiral shape.

[0013] Compared with the prior art, the liquid membrane contactor has the following advantages and technical effects:

[0014] The liquid phase material forms a water phase film between the liquid membrane fiber filaments, the water phase film is greatly increased in surface area compared to the liquid membrane fiber filaments, the oil phase material or the gas phase material greatly increases the two-phase contact area when passing through the liquid membrane fiber filaments, and the two phases are fully contacted to improve the chemical reaction rate or the physical extraction rate; after the chemical reaction or the physical extraction is completed, the two phases flow into the separation cavity of the separation tank, and the two-phase material sequentially passes through the distribution hole plate, the flow guide plate and the mixed silk screen coalescing element and enters the phase separation cavity, the flow speed of the two-phase material is reduced through the distribution hole plate, the two-phase material has a long time for preliminary separation, and the preliminary separation is based on the principle that the two-phase material is not mutually soluble; the flow speed of the two-phase material is further limited through the flow guide plate, and the two-phase material after the preliminary separation is layered and guided and transmitted; the two-phase material is uniformly distributed and slowly passes through the mixed silk screen coalescing element through the distribution hole plate and the flow guide plate; in the embodiment, the two-phase material can be oil phase and water phase, gas phase and water phase, and the oil phase and the water phase are taken as examples, the free water phase in the oil phase is coalesced and separated under the action of the mixed silk screen coalescing element, the free oil phase in the water phase is coalesced and separated, and therefore the two-phase separation speed is accelerated; through the above action, the two-phase material is layered and arranged in the phase separation cavity, and since the separation cavity and the phase separation cavity are separated through the phase separation assembly, the two-phase material in the separation cavity does not affect the stability of the two-phase material which has been phase-separated and layered, and the quality stability of the material discharged from the first outlet and the second outlet of the separation tank is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a structural schematic diagram of the fiber liquid membrane contactor of the present application.

[0017] Figure 2 It is a structural schematic diagram of the distributor of the present application.

[0018] Figure 3 It is a structural schematic diagram of the liquid membrane fiber filament of the present application.

[0019] Figure 4 It is a structural schematic diagram of the fiber filament suspension beam of the present application.

[0020] Figure 5 It is a structural schematic diagram of the distribution hole plate of the present application.

[0021] Figure 6 It is a structural schematic diagram of the mixed silk screen coalescing element of the present application.

[0022] Wherein, 1, liquid membrane contactor shell, 2, distributor, 3, fiber silk beam, 4, liquid membrane fiber silk, 5, separation tank, 6, distribution hole plate, 7, guide plate, 8, mixed silk screen coalescer, 11, second feed inlet, 12, first feed inlet, 13, first outlet, 14, second outlet, 21, first pipeline, 22, second pipeline, 23, discharge hole. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The described embodiments are only part of the embodiments of the utility model, not all the embodiments. All other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] Referring to Figures 1-6 The utility model provides a kind of fiber liquid membrane contactor, including liquid membrane contactor shell 1 and separation tank 5, liquid membrane contactor shell 1 inside is provided with the liquid membrane fiber silk 4 for the contact of two-phase material;Separation tank 5 inside is sequentially provided with separation cavity, phase separation component and phase separation cavity according to fluid flow direction, separation tank 5 is arranged below liquid membrane contactor shell 1, and liquid membrane contactor shell 1 is communicated with separation cavity;Phase separation component includes distribution hole plate 6, guide plate 7 and mixed silk screen coalescer 8 arranged sequentially according to fluid flow direction, and first outlet 13 and second outlet 14 are sequentially communicated in the upper and lower ends of phase separation cavity.

[0025] In the working of the embodiment, liquid-phase substances form a water-phase film between the liquid membrane filaments 4, and the water-phase film greatly increases the surface area of the liquid membrane filaments 4. When the oil-phase substances or the gas-phase substances pass through the liquid membrane filaments 4, the contact area of the two phases is greatly increased, and the two phases are fully contacted to improve the chemical reaction rate or the physical extraction rate. After the chemical reaction or the physical extraction is completed, the two phases flow into the separation chamber of the separation tank 5. The two-phase substances pass through the distribution hole plate 6, the flow guide plate 7 and the mixed wire mesh coalescing element 8 into the phase separation chamber in sequence. The utility model reduces the flow rate of the two-phase substances through the distribution hole plate 6, so that the two-phase substances have a longer time for preliminary separation based on the principle that the two-phase substances are immiscible. The flow rate of the two-phase substances is further limited by the flow guide plate 7, and the two-phase substances separated preliminarily are layered and guided for transmission. The two-phase substances are uniformly distributed and slowly pass through the mixed wire mesh coalescing element 8 through the distribution hole plate 6 and the flow guide plate 7. In the embodiment, the two-phase substances can be oil-phase and water-phase, gas-phase and water-phase. The embodiment takes the oil-phase and water-phase as an example. Under the action of the mixed wire mesh coalescing element 8, the free water-phase in the oil-phase is coalesced and separated, and the free oil-phase in the water-phase is coalesced and separated, so as to accelerate the separation speed of the two phases. Through the above-mentioned action, the two-phase substances are layered and arranged in the phase separation chamber, and the substances separated in phase are discharged from the separation tank 5 through the first outlet 13 and the second outlet 14.

[0026] In the embodiment, the oil-phase includes but is not limited to liquefied petroleum gas, liquid hydrocarbon, light oil, gasoline, diesel, kerosene and condensate oil; and the water-phase includes but is not limited to water, amine solution and alkali solution.

[0027] In a further optimization scheme, the distribution hole plate 6 includes a first plate body detachably connected with the liquid membrane contactor shell 1, and a plurality of through holes are formed in the first plate body and distributed along the fluid flow direction axis. In the embodiment, the two-phase substances flow through the through holes in the distribution hole plate 6, and the flow rate of the substances after reaction is reduced by the interception effect of the non-through area of the first plate body, so that the two-phase substances are preliminarily separated. Of course, the flow rate of the substances after reaction can be further controlled by controlling the number, position and area of the through holes in the embodiment. The material of the distribution hole plate 6 is stainless steel, and the flow rate of the two-phase materials through the through holes is in the range of 0.01 m / s-0.05 m / s.

[0028] Further optimization scheme, the guide plate 7 includes with the liquid film contactor shell 1 detachable connection first shell, the first shell inside is provided with several groups of parallel arrangement corrugated plate, the corrugated plate is arranged along the fluid flow direction. Through the preliminary separation of two-phase material is layered, the two-phase material after layering is guided through the gap between adjacent corrugated plates, further limit the flow rate of the reaction material, improve the separation time of two-phase, and guide the transmission of the preliminary separation of two-phase. In this embodiment, the corrugated plate inside the guide plate 7 can also be a straight plate, a circular arc plate or other shaped plate material, but compared with other shaped plate materials, the gap formed between adjacent corrugated plates is longer, which can further improve the separation time of two-phase and improve the two-phase separation effect. The material of the guide plate 7 is stainless steel or high polymer material resistant to oil and alkali corrosion, and the flow rate of the two-phase material through the guide plate 7 is in the range of 0.005 m / s-0.01 m / s.

[0029] Preferably, the mixed wire mesh coalescer 8 includes hydrophilic wire mesh and oleophilic wire mesh. The hydrophilic wire mesh is obtained by chemical modification treatment on the surface of stainless steel wire, the diameter of the stainless steel wire is 0.05 mm-0.1 mm, and the hydrophilic angle of the hydrophilic wire mesh is not greater than 3°; the oleophilic wire mesh is a high polymer limiting part, the high polymer fiber material is modified polytetrafluoroethylene or polyphenylene sulfide fiber material, and the diameter of the high polymer fiber is 0.1 mm-0.2 mm. The mixed wire mesh coalescer 8 includes hydrophilic wire mesh and oleophilic wire mesh mixed together, and under the surface tension of the hydrophilic wire mesh and the oleophilic wire mesh, the free water phase in the oil phase is further coalesced and separated, and the free oil phase in the water phase is coalesced and separated, thereby accelerating the separation speed of two-phase. In some specific embodiments, under the surface tension of the hydrophilic wire mesh and the oleophilic wire mesh, the coalesced and separated free water phase entrained in the oil phase is not more than 10 μm, and the coalesced and separated free oil phase entrained in the water phase is not more than 30 μm, thereby accelerating the separation speed of two-phase. The volume of the separation tank equipped with the coalescing separator of the utility model is only 30% to 50% of the volume of the ordinary separation tank.

[0030] Further optimization scheme, the liquid membrane contactor shell 1 inside detachable connection has fiber silk hanging beam 3, fiber silk hanging beam 3 is perpendicular to the central axis of liquid membrane contactor shell 1, one end of liquid membrane fiber silk 4 is detachably connected with fiber silk hanging beam 3, liquid membrane fiber silk 4 is arranged under the action of gravity. The material of liquid membrane fiber silk 4 is 304 and above stainless steel, the diameter of liquid membrane fiber silk 4 is 0.05mm-0.3mm, the surface of stainless steel wire is treated by chemical process hydrophilic modification, and the hydrophilic angle is not more than 3°. In this embodiment, one end of liquid membrane fiber silk 4 is fixed by fiber silk hanging beam 3, liquid membrane fiber silk 4 is arranged under the action of gravity, that is, the other end of liquid membrane fiber silk 4 is free end, which ensures the shape of liquid membrane fiber silk 4. Preferably, the shape of liquid membrane fiber silk 4 is one of corrugated or spiral, compared with linear liquid membrane fiber silk 4, the actual length of corrugated or spiral liquid membrane fiber silk 4 per unit length is longer, which further improves the water phase film area, increases the two-phase contact area, and improves the chemical reaction rate or physical extraction rate. And the other end of liquid membrane fiber silk 4 is free end, which ensures the shape of liquid membrane fiber silk 4.

[0031] In this embodiment, the liquid membrane contactor shell 1 is arranged vertically, and the liquid membrane contactor shell 1 is arranged vertically with the separation tank 5, and the discharge end of the liquid membrane contactor shell 1 extends into the separation cavity of the separation tank 5. Since the liquid membrane contactor shell 1 is arranged vertically, that is, the liquid membrane fiber silk 4 is arranged vertically under the action of gravity, and the fiber silk hanging beam 3 is perpendicular to the central axis of the liquid membrane contactor shell 1, so that the arrangement can ensure that all the liquid membrane fiber silks 4 have the maximum length and ensure the water phase film area. After chemical reaction or physical extraction, the remaining substances directly enter the separation cavity of the separation tank 5, and since the discharge end of the liquid membrane contactor shell 1 extends into the separation cavity of the separation tank 5, the remaining substances directly contact the two-phase substances in the separation cavity, rather than falling into the separation cavity, which ensures the stability of the two-phase substances in the separation cavity and facilitates the separation of the two-phase substances due to the mutual insolubility.

[0032] Further optimization scheme, the liquid membrane contactor shell 1 inside detachable connection has distributor 2, distributor 2 is arranged in the fiber silk beam 3 side away from the liquid membrane fiber silk 4, and distributor 2 is perpendicular to the liquid membrane contactor shell 1 central axis;Distributor 2's feed end is communicated with first feed port 12, and first feed port 12 is used to supply liquid phase substance;The liquid membrane contactor shell 1 is also connected with second feed port 11, and the second feed port 11 is arranged on the side of the distributor 2 away from the liquid membrane fiber silk 4, and the second feed port 11 is used to supply oil phase substance or gas phase substance.In this embodiment, the liquid phase substance is provided to the distributor 2 through the first feed port 12, the liquid phase substance is distributed by the distributor 2, the liquid phase substance flows into the liquid membrane fiber silk 4, and the liquid phase substance forms a water phase film between the liquid membrane fiber silk 4.The oil phase substance or the gas phase substance enters the liquid membrane contactor shell 1 through the second feed port 11, moves to the liquid membrane fiber silk 4 region under the action of gravity, and reacts or extracts with the liquid phase substance existing in the water phase film.

[0033] Preferably, the distributor 2 comprises a first pipe 21, the first pipe 21 is communicated with a plurality of second pipes 22, all the second pipes 22 are in the same plane and the plane is arranged vertically to the central axis of the liquid membrane contactor shell 1;The first pipe 21 and the second pipe 22 are provided with discharge holes 23 on the side close to the liquid membrane fiber silk 4.In this embodiment, the fiber silk beam 3 comprises a plurality of groups of parallel arranged suspension beams, the suspension beams in this embodiment are arranged vertically and correspondingly to the second pipes, so that the liquid phase substance can move accurately to the suspension beams and then directly to the liquid membrane fiber silk 4, thereby facilitating the formation of the water phase film.

[0034] The above description of the embodiments is only used to help understand the method and its core idea of the application;At the same time, for those skilled in the art, according to the idea of the application, the specific implementation and application range will be changed, and the above description should not be understood as the limitation of the application.

[0035] It should be understood that the term "and / or" used herein is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone.In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0036] In the description of the utility model, need understanding is, the term "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as limiting the utility model.

[0037] The above-described embodiments are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope defined by the claims of the utility model.

Claims

1. A fibrous liquid membrane contactor characterized by, The application relates to a liquid membrane contactor shell (1) internally provided with liquid membrane filaments (4) for two-phase material contact. A separation tank (5) is internally provided with a separation cavity, a phase separation assembly and a phase separation cavity in sequence according to fluid flow direction, the separation tank (5) is arranged below the liquid membrane contactor shell (1), and the liquid membrane contactor shell (1) is communicated with the separation cavity; the phase separation assembly comprises a distribution hole plate (6), a flow guide plate (7) and a mixed wire screen coalescing element (8) arranged in sequence according to fluid flow direction, and the phase separation cavity is sequentially communicated with a first outlet (13) and a second outlet (14) at upper and lower ends. The distribution hole plate (6) comprises a first plate body detachably connected with the liquid membrane contactor shell (1), a plurality of through holes are formed in the first plate body, and the through holes are axially distributed along the fluid flow direction.

2. The fibrous liquid membrane contactor of claim 1, wherein, The flow guide plate (7) comprises a first shell body detachably connected with the liquid membrane contactor shell (1), a plurality of groups of parallel arranged corrugated plates are arranged in the first shell body, and the corrugated plates are arranged along the fluid flow direction.

3. The fibrous liquid membrane contactor of claim 1, wherein, The mixed wire screen coalescing element (8) comprises a hydrophilic wire screen and an oleophilic wire screen.

4. The fibrous liquid membrane contactor of claim 1, wherein, The liquid membrane contactor shell (1) is detachably connected with a filament suspension beam (3), the filament suspension beam (3) is perpendicular to the central axis of the liquid membrane contactor shell (1), one end of the liquid membrane filament (4) is detachably connected with the filament suspension beam (3), and the liquid membrane filament (4) is arranged in a hanging mode under the action of gravity.

5. The fibrous liquid membrane contactor of claim 1, wherein, The liquid membrane contactor shell (1) is vertically arranged, the liquid membrane contactor shell (1) is vertically arranged with the separation tank (5), and the discharge end of the liquid membrane contactor shell (1) extends into the separation cavity of the separation tank (5).

6. The fibrous liquid membrane contactor of claim 5, wherein, The liquid membrane contactor shell (1) is detachably connected with a distributor (2), the distributor (2) is arranged on the side, away from the liquid membrane filament (4), of the filament suspension beam (3), and the distributor (2) is perpendicular to the central axis of the liquid membrane contactor shell (1); the feeding end of the distributor (2) is communicated with a first feeding port (12) for supplying liquid phase material; the liquid membrane contactor shell (1) is further connected with a second feeding port (11), the second feeding port (11) is arranged on the side, away from the liquid membrane filament (4), of the distributor (2), and the second feeding port (11) is used for supplying oil phase material or gas phase material.

7. The fibrous liquid membrane contactor of claim 5, wherein, The distributor (2) comprises a first pipeline (21) communicated with a plurality of second pipelines (22), all the second pipelines (22) are arranged in the same plane which is perpendicular to the central axis of the liquid membrane contactor shell (1); the feeding hole (23) is arranged on the side, close to the liquid membrane filament (4), of the first pipeline (21) and the second pipeline (22).

8. The fibrous liquid membrane contactor of claim 7, wherein, The shape of the liquid membrane filament (4) is one of corrugated or spiral.

9. The fibrous liquid membrane contactor according to any one of claims 1 to 8, wherein, ​

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