Self-balancing multiphase self-shunting device

Abstract

The utility model discloses a self-balancing multiphase self-shunting device, and belongs to the technical field of chemical separation. The device comprises an automatic split-phase tank (1), a pressure display A (2), a system pressure automatic controller (3), a light phase collecting tank (4), a liquid discharge valve A (5), a pressure display B (6), a material inlet (7), a light phase overflow port (8), a heavy phase extraction port (9), a split-phase internal component (10), a liquid discharge valve C (11), a heavy phase extraction automatic regulating valve (12), a heavy phase collecting tank (13) and the like. The device is simple in structure, can be operated at normal pressure or under pressure, is high in operation elasticity, realizes self-balance of the liquid level height by utilizing the light phase overflow port (8), realizes rapid phase splitting of light and heavy components by adopting a special structure of the phase splitting inner component (10), forms a stable phase interface, is good in separation effect, and is suitable for industrial production. The method can be used for chemical unit operations such as extraction separation, reaction separation and rectification.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of self-balancing multiphase self-flowing devices, belong to chemical separation technical field, can be applied to extraction separation, reaction separation, rectification etc. BACKGROUND

[0002] In chemical unit operation, separation between two mutually insoluble liquids is often encountered, due to the density of two liquids is different, the liquid with large density is in lower layer, called heavy component, the liquid with small density is in upper layer, called light component. For example, extraction separation, water washing phase separation, separation of overhead material in rectification etc.

[0003] Yancheng Donggang Pharmaceutical Chemical Development Co. Ltd. reports a kind of two-phase automatic phase separation device in patent CN 208726807 U, which is composed of liquid separation tank, feed pipe, heavy phase receiving tank, light phase receiving tank and vent pipe etc., the top of liquid separation tank is provided with feed inlet and vent hole, the bottom is provided with heavy phase liquid outlet, the side is provided with light phase liquid outlet, the tank body is a liquid separation device;Feed pipe is connected with feed inlet as a whole;Heavy phase receiving tank is connected with heavy phase liquid outlet through heavy phase liquid conveying pipe;Light phase receiving tank is connected with light phase liquid outlet through light phase liquid conveying pipe;Vent pipe is connected with vent hole as a whole.

[0004] He Benke reports an intelligent extraction equipment in patent CN 107670330 A, which includes extraction main body, control device and camera equipment, the bottom of extraction main body is installed with liquid outlet pipe, and liquid valve is installed on liquid outlet pipe;Scale line is arranged on the side wall of extraction main body, and through hole is formed in the side wall of extraction main body, and the through hole is arranged at intervals with scale line;The outer side wall of extraction main body has liquid cavity, and the liquid cavity is communicated with extraction main body through through hole;Liquid outlet is formed in the bottom of liquid cavity;Covering plate is covered on through hole, and covering plate is slidingly installed on extraction main body, and the bottom of covering plate extends to the lower side of the bottom of extraction main body, and is connected with sliding drive device located outside extraction main body;Control device is connected with sliding drive device and camera equipment respectively;Camera equipment is opposite to the part where scale line is located in extraction main body, and it is used to shoot the condition of layered liquid in extraction main body after liquid separation in extraction main body is finished.

[0005] Nantong Times Chemical Co. Ltd. reports an automatic phase separation device in patent CN 211585332 U, which includes separation tank, and heavy component liquid outlet and light component liquid outlet are respectively arranged on the left side and the right side of separation tank, the position of heavy component liquid outlet is lower, and the position of light component liquid outlet is higher, mainly using the density difference of two liquids for rough separation.

[0006] Limin Chemical Co., Ltd. reported in patent CN 211798975 U an automatic phase separation device for liquid-liquid two-phase separation. The device consists of a phase separation tank, a hydrometer, a liquid level gauge, a light phase receiving tank and a heavy phase receiving tank located below the phase separation tank, and a computer control system DCS / PLC. The hydrometer detects changes in liquid density and transmits a signal to the computer control system, which then opens and closes the valve to achieve automatic control.

[0007] On December 23, 2017, the applicant applied to the State Intellectual Property Office for an invention patent entitled "Special Distillation Self-Balancing Phase Separation Pumpless Reflux Control Method" with application number 201711499100.3. The light and heavy phase components extracted from the top of the distillation tower are separated according to their densities in a self-balancing phase separation reflux device using specially designed internal components. One phase is extracted and the other phase is refluxed into the distillation tower.

[0008] The applicant applied to the State Intellectual Property Office on September 5, 2019 and was authorized and announced on August 4, 2020 for a utility model patent entitled "A kind of extraction automatic phase separation integrated control system", with application number 201921514313.3. The liquid level meter is used to monitor the height of the liquid in the tank, and the feed valve, discharge valve, light phase liquid outlet valve, heavy phase liquid outlet valve, light phase reflux valve, heavy phase reflux valve, etc. are automatically controlled by PLC.

[0009] The applicant believes that there is room for optimization in the processes of the above two patent applications, which can make the process of the device simpler and have a wider scope of application. Summary of the invention:

[0010] The technical problem to be solved by the utility model is to provide a self-balancing multiphase self-dividing device with simple structure, great operational flexibility, stable control of phase interfaces (including gas-liquid interface and liquid-liquid interface), and self-powered control.

[0011] The utility model relates to a kind of self-balancing multiphase self-flow device, including automatic phase separation tank (1), pressure display A (2), system pressure automatic controller (3), light phase collection tank (4), liquid drain valve A (5), pressure display B (6), material inlet (7), light phase overflow (8), heavy phase extraction outlet (9), phase separation inner member (10), liquid drain valve C (11), heavy phase extraction automatic regulating valve (12), heavy phase collection tank (13), pressure display C (14), automatic pressure regulator (15) and liquid drain valve B (16), characterized in that: the automatic phase separation tank (1) top is connected with pressure display A (2), the inlet of system pressure automatic controller (3) and the top of light phase collection tank (4) respectively by pipeline, the outlet of system pressure automatic controller (3) is directly vented, the bottom of automatic phase separation tank (1) is connected with liquid drain valve A (5) and pressure display B (6) simultaneously by pipeline, the tank body of automatic phase separation tank (1) is sequentially distributed with material inlet (7), light phase overflow (8) and heavy phase extraction outlet (9) from top to bottom, the material inlet (7) is connected with phase separation inner member (10) by pipeline, the light phase overflow (8) is connected with light phase collection tank (4) by pipeline, the bottom of light phase collection tank (4) is connected with liquid drain valve C (11), the heavy phase extraction outlet (9) is sequentially connected with heavy phase extraction automatic regulating valve (12) and heavy phase collection tank (13) by pipeline, the top of heavy phase collection tank (13) is connected with pressure display C (14) and automatic pressure regulator (15) respectively by pipeline, the bottom of heavy phase collection tank (13) is connected with liquid drain valve B (16) by pipeline.

[0012] The pressure display A (2) and pressure display C (14) are pressure gauges or pressure sensors, and the pressure display B (6) is a pressure sensor.

[0013] The phase separation inner component (10) is composed of a feeding pipe (1001), an inner overflow launder (1002), an outer overflow launder (1003), a connecting rod (1004) and a dripping hole (1005), the inner overflow launder (1002) is concentric with the outer overflow launder (1003), the bottom of the inner overflow launder (1002) is annularly distributed with the dripping hole (1005), the outer overflow launder (1003) is connected with the feeding pipe (1001) through the connecting rod (1004), the height from the bottom end of the feeding pipe (1001) to the bottom end of the inner overflow launder (1002) is h3, the height of the inner overflow launder (1002) is h2, the height of the outer overflow launder (1003) is h1, and the three satisfy the following relations: h3=(0.2-0.4)h2, h2=(0.3-0.8)h1, the material collides at high speed at the bottom of the feeding pipe (1001) and the inner overflow launder (1002) to realize rapid gas-liquid separation, the gas component goes upward, the light component and the heavy component are subjected to liquid-liquid separation in the inner overflow launder (1002) and the outer overflow launder (1003), the installation height of the phase separation inner component (10) is located in the light phase component, due to the density difference of the liquid, the heavy component sinks through the annularly distributed dripping hole (1005) at the bottom of the inner overflow launder (1002), and the light component overflows from the inner overflow launder (1002) to the outer overflow launder (1003) and buffers the fluctuation of the light phase liquid surface.

[0014] The device has the advantages that:

[0015] 1. The device has simple structure and is convenient to install and use.

[0016] 2. The device has wide applicability and can be used for liquid-liquid component separation (separation of two liquid components with different densities, such as extraction separation) and gas-liquid-liquid component separation (separation of gas and two liquid components with different densities, such as reaction rectification), the automatic phase separation tank (1) is connected with a system pressure automatic controller (3), so the device can be used for normal pressure separation and pressure separation, and has large operation flexibility.

[0017] 3、Gas-liquid mixed material through the feed pipe (1001) and the bottom of the inner overflow launder (1002) high-speed collision to achieve rapid gas-liquid separation, gas composition upward, light, heavy components in the inner overflow launder (1002) and the outer overflow launder (1003) synergistic effect of liquid-liquid separation, the installation height of the phase separation inner member (10) is located in the light phase composition, due to the density difference of the liquid, the heavy component will be free to settle through the bottom of the inner overflow launder (1002) annular distribution drop hole (1005) to the bottom of the automatic phase separation tank (1), the light component from the inner overflow launder (1002) overflow to the outer overflow launder (1003), light component and heavy component from two directions by fluid gravity into the automatic phase separation tank (1), effectively avoid the mutual disturbance between the fluid, good realization of gas, light component, heavy component three separation, so as to ensure the control of the phase interface stability (including gas-liquid phase interface, liquid-liquid phase interface). BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a self-balancing multi-phase self-flowing device.

[0019] Figure 2 It is a structural schematic diagram of a phase separation inner member (10).

[0020] Figure 3 It is a top view of the phase separation inner member (10). DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in connection with the drawings:

[0022] For example Figure 1The self-balanced multi-phase self-flow device comprises an automatic phase separation tank (1), a pressure display A (2), a system pressure automatic controller (3), a light phase collection tank (4), a liquid discharge valve A (5), a pressure display B (6), a material inlet (7), a light phase overflow port (8), a heavy phase outlet (9), a phase separation inner component (10), a liquid discharge valve C (11), a heavy phase outlet automatic regulating valve (12), a heavy phase collection tank (13), a pressure display C (14), an automatic pressure regulator (15) and a liquid discharge valve B (16). The top of the automatic phase separation tank (1) is connected with the pressure display A (2), the inlet of the system pressure automatic controller (3) and the top of the light phase collection tank (4) through pipelines respectively. The outlet of the system pressure automatic controller (3) is directly vented. The bottom of the automatic phase separation tank (1) is connected with the liquid discharge valve A (5) and the pressure display B (6) through pipelines simultaneously. The tank body of the automatic phase separation tank (1) is sequentially distributed with the material inlet (7), the light phase overflow port (8) and the heavy phase outlet (9) from top to bottom. The material inlet (7) is connected with the phase separation inner component (10) through a pipeline. The phase separation inner component (10) is composed of a feeding pipe (1001), an inner overflow groove (1002), an outer overflow groove (1003), a connecting rod (1004) and a dripping hole (1005). The inner overflow groove (1002) is concentric with the outer overflow groove (1003). The bottom of the inner overflow groove (1002) is annularly distributed with the dripping hole (1005). The outer overflow groove (1003) is connected with the feeding pipe (1001) through the connecting rod (1004). The height from the bottom end of the feeding pipe (1001) to the bottom end of the inner overflow groove (1002) is h3. The height of the inner overflow groove (1002) is h2. The height of the outer overflow groove (1003) is h1. The three satisfy the following relationship: h3=(0.2-0.4)h2, h2=(0.3-0.8)h1, the material collides with the bottom of the inner overflow launder (1002) through the feed pipe (1001) at high speed to realize rapid gas-liquid separation, the gas composition goes up, the light component and the heavy component carry out liquid-liquid separation in the inner overflow launder (1002) and the outer overflow launder (1003), the installation height of the phase separation inner component (10) is located in the light phase composition, due to the density difference of the liquid, the heavy component will sink through the annular distribution drop hole (1005) at the bottom of the inner overflow launder (1002), the light component overflows from the inner overflow launder (1002) to the outer overflow launder (1003), the light phase liquid level fluctuation is buffered, the light phase overflow port (8) is connected with the light phase collection tank (4) through the pipeline, the bottom of the light phase collection tank (4) is connected with the liquid drain valve C (11), the heavy phase sampling outlet (9) is connected with the heavy phase sampling automatic regulating valve (12) and the heavy phase collection tank (13) through the pipeline in sequence, the top of the heavy phase collection tank (13) is connected with the pressure display C (14) and the automatic pressure regulator (15) through the pipeline, the bottom of the heavy phase collection tank (13) is connected with the liquid drain valve B (16) through the pipeline, the pressure display A (2) and the pressure display C (14) are pressure gauges or pressure sensors, the pressure display B (6) is a pressure sensor, the pressure display B (6) is connected with the opening degree of the heavy phase sampling automatic regulating valve (12) in interlocking control, the opening degree of the heavy phase sampling automatic regulating valve (12) is controlled in interlocking through the electric signal of the pressure sensor, PID adjustment is realized, and the stability of the phase interface is more favorable.

[0023] Here, the description and application of the utility model are illustrative, and the scope of the utility model is not limited in the above-mentioned embodiments, therefore, the utility model is not limited by the embodiments, and any technical scheme obtained by equivalent replacement is within the protection scope of the utility model.

Claims

1. A self-balanced multi-phase self-flow device, comprising an automatic phase separation tank (1), a pressure display A (2), a system pressure automatic controller (3), a light phase collection tank (4), a liquid discharge valve A (5), a pressure display B (6), a material inlet (7), a light phase overflow port (8), a heavy phase production outlet (9), a phase separation internal component (10), a liquid discharge valve C (11), a heavy phase production automatic regulating valve (12), a heavy phase collection tank (13), a pressure display C (14), an automatic pressure regulator (15), and a liquid discharge valve B (16), characterized in that: The automatic phase separation tank (1) is connected with the pressure display A (2), the inlet of the system pressure automatic controller (3) and the top of the light phase collection tank (4) through pipelines respectively, the outlet of the system pressure automatic controller (3) is directly vented, the bottom of the automatic phase separation tank (1) is connected with the liquid drain valve A (5) and the pressure display B (6) through pipelines simultaneously, the tank body of the automatic phase separation tank (1) is sequentially distributed with the material inlet (7), the light phase overflow port (8) and the heavy phase sampling outlet (9) from top to bottom, the material inlet (7) is connected with the phase separation inner component (10) through a pipeline, the light phase overflow port (8) is connected with the light phase collection tank (4) through a pipeline, the bottom of the light phase collection tank (4) is connected with the liquid drain valve C (11), the heavy phase sampling outlet (9) is sequentially connected with the heavy phase sampling automatic regulating valve (12) and the heavy phase collection tank (13) through pipelines, the top of the heavy phase collection tank (13) is connected with the pressure display C (14) and the automatic pressure regulator (15) through pipelines respectively, the bottom of the heavy phase collection tank (13) is connected with the liquid drain valve B (16) through a pipeline.

2. A self-balancing multi-phase current sharing device according to claim 1, wherein: The pressure display A (2) and the pressure display C (14) are pressure gauges or pressure sensors, the pressure display B (6) is a pressure sensor, the pressure display B (6) is connected with the opening of the heavy phase sampling automatic regulating valve (12) to realize PID regulation, which is more conducive to the stability of the phase interface.

3. A self-balancing multi-phase current sharing device according to claim 1, wherein: The phase separation inner component (10) is composed of a feeding pipe (1001), an inner overflow groove (1002), an outer overflow groove (1003), a connecting rod (1004) and a dripping hole (1005), the inner overflow groove (1002) is concentric with the outer overflow groove (1003), the bottom of the inner overflow groove (1002) is annularly distributed with the dripping hole (1005), the outer overflow groove (1003) is connected with the feeding pipe (1001) through the connecting rod (1004), the height between the bottom end of the feeding pipe (1001) and the bottom end of the inner overflow groove (1002) is h3, the height of the inner overflow groove (1002) is h2, the height of the outer overflow groove (1003) is h1, and the three satisfy the following relationships: h3=(0.2-0.4)h2, h2=(0.3-0.8)h1, the material collides with the bottom of the inner overflow groove (1002) at high speed through the feeding pipe (1001) to realize rapid gas-liquid separation, the gas component goes upward, the light component and the heavy component are subjected to liquid-liquid separation in the inner overflow groove (1002) and the outer overflow groove (1003), the installation height of the phase separation inner component (10) is located in the light phase component, due to the density difference of the liquid, the heavy component sinks through the annularly distributed dripping hole (1005) at the bottom of the inner overflow groove (1002), and the light component overflows from the inner overflow groove (1002) to the outer overflow groove (1003) to buffer the fluctuation of the light phase liquid level.

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