Chemical product fractional extraction apparatus

Abstract

This utility model relates to the field of textile auxiliaries technology, and more particularly to a layered extraction device for chemical products. It includes a layered extraction box, a flow guide plate, and a packing plate. The flow guide plate is fixedly connected inside the layered extraction box, and is used to guide the chemical products. Two locking grooves are provided on the top of the flow guide plate. Two support frames are provided inside the layered extraction box. The end of the support frame near the flow guide plate is inserted into the locking groove. A packing plate is fixedly connected to the inner side of the support frame, and is used to increase the contact area between one phase and another. The flow guide plate of this utility model uses an inclined angle to allow the chemical products to flow naturally to the drain pipe under gravity. When the material flows through the multi-layered porous packing plate, its three-dimensional network structure causes the dispersed phase fluid to repeatedly undergo droplet breakage and re-condensation through pore channels, continuously renewing the mass transfer interface, significantly reducing shear force and avoiding interphase emulsification. Through physical structural innovation, it achieves a non-powered anti-emulsification mass transfer function.

Description

Technical Field

[0001] This utility model relates to the field of textile auxiliaries technology, and in particular to a device for the layered extraction of chemical products. Background Technology

[0002] Textile auxiliaries are essential chemicals in the production and processing of textiles. They play an indispensable role in improving the quality and added value of textile products. In quality testing (such as APEO and PFOA screening) or specific research scenarios, layered extraction based on the properties of the target substance is necessary. Extraction, as a typical multiphase separation unit operation, is based on the principle of utilizing the difference in solubility of substances in immiscible solvent systems to achieve selective migration of target components from the original liquid phase to the extractant through interphase partitioning. This mass transfer phenomenon based on thermodynamic equilibrium is widely used in the chemical industry for processes such as product purification, impurity removal, and enrichment of effective components, demonstrating its important application value in the field of modern separation engineering technology.

[0003] A common type of chemical product layered extraction device only includes the function of layered extraction. It can increase the contact area between the two phases through the mechanical action of stirring and accelerate the diffusion rate of the solute in the solvent. However, it lacks the function of non-powered anti-emulsification. It cannot guarantee that it can reduce the energy consumption during layered extraction and cannot guarantee that the chemical product will not emulsify during stirring. The shear force and turbulence generated during stirring can easily disrupt the interfacial equilibrium of the two immiscible solutions, causing them to disperse into tiny droplets. When the stirrer rotates at high speed, the mechanical shear force generated will cut large droplets into smaller particles. At the same time, the intense turbulent motion will make these droplets uniformly dispersed in the continuous phase. If there are surface-active substances in the system, their molecules will form a protective film on the droplet surface, further reducing the interfacial tension and stabilizing the dispersion. Even without the addition of emulsifiers, continuous mechanical action may still cause temporary emulsification through physical breakage and bubble entrainment. In addition, the stirring speed and equipment structure directly affect the shear strength. Excessive speed may aggravate the emulsification phenomenon and consume more energy, which affects the efficiency of layered extraction.

[0004] Therefore, in view of the lack of non-powered anti-emulsification function, the high shear force and turbulence generated by vigorous stirring will break the equilibrium of the two-phase interface, break the droplets into micron-sized particles and uniformly disperse them in the continuous phase. Due to mechanical breakage and bubble entrainment, temporary emulsification is caused. Excessive rotation speed not only aggravates emulsification but also significantly increases energy consumption, causing problems that restrict the efficiency of layered extraction. Therefore, a layered extraction device for chemical products can be designed. Utility Model Content

[0005] To overcome the lack of non-powered anti-emulsification function, the high shear force and turbulence generated by vigorous stirring will disrupt the equilibrium of the two-phase interface, breaking the droplets into micron-sized particles and dispersing them uniformly in the continuous phase. Due to mechanical breakage and bubble entrainment, temporary emulsification is caused. Excessive rotation speed not only aggravates emulsification but also significantly increases energy consumption, causing problems that restrict the efficiency of layered extraction.

[0006] The technical solution of this utility model is as follows: a chemical product layered extraction device, including a layered extraction box, a flow guide plate and a packing plate. The flow guide plate is fixedly connected inside the layered extraction box. The flow guide plate is used to guide the chemical product. Two snap-fit ​​grooves are opened on the top of the flow guide plate. Two support frames are set inside the layered extraction box. The end of the support frame near the flow guide plate is inserted into the snap-fit ​​groove. The packing plate is fixedly connected to the inner side of the support frame. The packing plate is used to increase the contact area between one phase and another phase.

[0007] Preferably, the chemical products are guided to flow naturally towards the drain pipe under gravity by the inclination of the guide plate. During this flow, the material continuously flows through two layers of packing plates. The packing plates can be made of various porous media materials such as metal wire mesh, ceramic rings, or plastic mesh. Their three-dimensional mesh structure, through a large number of pore channels and extended contact surfaces, causes the dispersed phase fluid to repeatedly undergo the dynamic process of droplet breakage and re-condensation within the gaps of the packing, thereby achieving continuous renewal and enhancement of the mass transfer interface. Especially in the countercurrent operation mode, the turbulent contact formed between the light and heavy phases on the packing surface significantly improves the solute interphase transfer rate. This mass transfer enhancement mechanism based on physical structure effectively avoids the energy consumption required by traditional mechanical stirring. At the same time, the packing plates promote the exchange of gas and liquid phases through countercurrent contact. The liquid spreads evenly into a thin film under gravity and flows naturally along the packing surface. Compared with mechanical forced dispersion, this greatly reduces the shear impact on the fluid and fundamentally avoids the generation of interphase emulsification, ultimately achieving the function of efficient anti-emulsification mass transfer without external power.

[0008] Preferably, the stratified extraction chamber is internally fixedly connected to two support bars, with two support frames located on top of the two support bars respectively.

[0009] Preferably, the bottom of the guide plate is fixedly connected with multiple support plates at equal intervals, the bottom of each support plate is welded to the bottom of the stratified extraction box, and multiple reinforcing connecting plates are fixedly connected between the multiple support plates.

[0010] Preferably, two plate-taking slots are provided on the left side of the stratified extraction box, and a sealing panel is fixedly connected to the end of the support frame away from the guide plate, and the sealing panel is inserted into the inside of the plate-taking slot.

[0011] Preferably, self-locking casters are installed at the four corners of the bottom of the stratified extraction box, and multiple drain pipes are fixedly connected at equal intervals on the lower left side of the stratified extraction box.

[0012] Preferably, a top plate is fixedly connected to the top of the stratified extraction chamber, and an observation window is provided on the front side of the stratified extraction chamber.

[0013] Preferably, a feed frame is fixedly connected to the upper right side of the stratified extraction chamber, and a protective cover is movably connected to the top of the feed frame.

[0014] The beneficial effects of this utility model are:

[0015] This structure utilizes the synergistic effect of the guide plate and the double-layer porous packing plate to achieve natural flow of materials and dynamic mass transfer of the dispersed phase driven by gravity. Its three-dimensional mesh packing promotes continuous droplet breakup and recombination by expanding the contact surface and pore channels. Combined with the turbulent contact formed by countercurrent operation, it significantly improves the interphase mass transfer efficiency. At the same time, it avoids the emulsification risk caused by mechanical shearing by relying on the characteristics of liquid gravity spreading and film formation. Finally, it achieves a highly efficient and energy-saving anti-emulsification mass transfer effect without external power. It has the comprehensive advantages of simple and reliable structure, low energy consumption, phase interface renewal and strengthening, and wide material adaptability. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0017] Figure 2 The diagram shown is a schematic cross-sectional view of the overall structure of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the layered extraction box structure of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the flow guide plate structure of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the modular filler plate structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Layered extraction box; 2. Flow guide plate; 3. Snap-fit ​​groove; 4. Support bar; 5. Support frame; 6. Packing plate; 7. Support plate; 8. Reinforcing connecting plate; 9. Plate taking groove; 10. Sealing panel; 11. Drain pipe; 12. Self-locking caster wheel; 13. Top plate; 14. Observation window; 15. Feed frame; 16. Protective cover. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment: a chemical product layered extraction device, including a layered extraction box 1, a guide plate 2, and a packing plate 6. The guide plate 2 is fixedly connected inside the layered extraction box 1, and the guide plate 2 is used to guide the chemical product. Two snap-fit ​​grooves 3 are opened on the top of the guide plate 2. Two support frames 5 are arranged inside the layered extraction box 1. The end of the support frame 5 near the guide plate 2 is inserted into the snap-fit ​​groove 3. The packing plate 6 is fixedly connected to the inner side of the support frame 5, and the packing plate 6 is used to increase the contact area between one phase and another phase. Through the inclined arrangement of the guide plate 2 at a specific angle, the chemical product is naturally guided to the position of the drain pipe 11 under the action of gravitational potential energy. In this directional flow path, the material passes through the two-stage packing plate 6 structure in sequence. The packing plate 6 can be constructed of a porous medium material such as metal wire mesh, ceramic rings, or plastic mesh. Its three-dimensional interwoven mesh The grid system, with its dense pore network and multiplied contact area, forces the dispersed phase fluid to circulate within the gaps in the packing layer, undergoing a multi-stage physical process of droplet breakage and recombination. This achieves continuous regeneration and enhancement of the mass transfer surface. In particular, when the system adopts a counter-current flow mode, the turbulent contact state formed by the two-phase fluids with significant density differences on the three-dimensional surface of the packing significantly improves the efficiency of interphase transfer. This mass transfer enhancement principle, which relies on the intrinsic structural characteristics of the material, completely eliminates the energy input requirement of traditional mechanical stirring devices. At the same time, the packing plate 6 optimizes the gas-liquid two-phase interaction process through the counter-current action mode. Under its own weight, the liquid phase extends into a uniform film flow and migrates autonomously along the complex surface of the packing. Compared with mechanical forced dispersion technology, this significantly weakens the shear stress intensity borne by the fluid, fundamentally blocking the possibility of interphase emulsification. Ultimately, it achieves the goal of efficient non-emulsified mass transfer without external power input.

[0024] Please see Figures 2-5 In this embodiment, two support bars 4 are fixedly connected inside the stratified extraction chamber 1, and two support frames 5 are respectively located on top of the two support bars 4. The support bars 4 support the support frames 5 and the packing plate 6 to prevent the support frames 5 and the packing plate 6 from breaking due to excessive load. Multiple support plates 7 are fixedly connected at equal intervals to the bottom of the flow guide plate 2. The bottom of the multiple support plates 7 is welded to the bottom of the interior of the stratified extraction chamber 1. Multiple reinforcing connecting plates 8 are fixedly connected between the multiple support plates 7 to support the flow guide plate 2. Multiple reinforcing connecting plates 8 enhance the support strength of multiple support plates 7 of different sizes, preventing the guide plate 2 from breaking due to excessive load. Two plate taking slots 9 are opened on the left side of the stratified extraction box 1. A sealing panel 10 is fixedly connected to the end of the support frame 5 away from the guide plate 2. The sealing panel 10 is inserted into the inside of the plate taking slot 9. By pulling the sealing panel 10, the support frame 5 is moved to the outside of the stratified extraction box 1 until the support frame 5 is completely pulled out from the inside of the stratified extraction box 1 after it is disengaged from the locking slot 3. Then the packing plate 6 can be maintained or replaced.

[0025] Please see Figures 1-5 In this embodiment, self-locking casters 12 are provided at the four corners of the bottom of the layered extraction box 1. Multiple drain pipes 11 are fixedly connected at equal intervals on the lower left side of the layered extraction box 1. When it is necessary to drain the two phases in the layered extraction box 1, the two phases can be discharged in batches simply by opening the multiple drain pipes 11. A top plate 13 is fixedly connected to the top of the layered extraction box 1. An observation window 14 is provided on the front side of the layered extraction box 1. The layered extraction of chemical products in the layered extraction box 1 can be clearly observed through the observation window 14. A feed frame 15 is fixedly connected to the upper right side of the layered extraction box 1. A protective cover 16 is movably connected to the top of the feed frame 15. By opening the protective cover 16, the chemical products can be added into the interior of the layered extraction box 1 through the feed frame 15.

[0026] During operation, the protective cover 16 is first opened to inject the chemical product into the stratified extraction chamber 1 through the feed frame 15. Under the influence of gravity, the material flows along the inclined surface of the guide plate 2 towards the drain pipe 11, continuously penetrating the upper and lower packing plates 6 in its movement path. The packing plates 6 are made of porous media materials such as metal wire mesh, ceramic rings, or plastic mesh. Relying on their three-dimensional porous network structure, they form dense pore channels. By increasing the contact surface area, the dispersed phase fluid particles undergo a cyclic droplet breakage and recombination process within the packing gaps, thereby achieving a periodic refresh and enhancement effect of the mass transfer interface, especially under countercurrent conditions, in light and heavy two-phase flow. The turbulent contact formed on the packing surface significantly accelerates the cross-phase migration efficiency of solute molecules. This mass transfer enhancement mode, which relies on the physical properties of the material, avoids the energy consumption of mechanical stirring while using countercurrent contact to promote the exchange of gas and liquid phases. The liquid extends and flows along the packing surface in the form of a thin film under the action of gravity. Compared with mechanical forced dispersion technology, it effectively reduces the shear force on the fluid and inhibits the formation of interphase emulsification from the source. The operator can intuitively monitor the phase separation state of the material in the stratified extraction box 1 through the observation window 14. When it is necessary to discharge the stratified liquid phase in the box, the sequential discharge control of different phase layers can be achieved by controlling the opening and closing of multiple drain pipes 11.

[0027] Through the above steps, the guide plate 2, with the help of its tilt angle and gravity, guides the chemical products to flow naturally towards the drain pipe 11. When the material flows through the double-layer packing plate 6, the three-dimensional porous mesh structure composed of metal wire mesh, ceramic rings, or plastic mesh, through its pore channels and extended surfaces, causes the dispersed phase fluid to repeatedly undergo a dynamic process of droplet breakage and re-condensation within the packing gaps, continuously renewing the mass transfer interface. In countercurrent operation, the turbulent contact formed between the light and heavy phases on the packing surface significantly increases the solute interphase transfer rate. This physical mass transfer mechanism does not require mechanical stirring or energy consumption. At the same time, under the action of gravity, the liquid forms a uniform liquid film along the packing surface to achieve gas-liquid exchange, and by reducing shear force, interphase emulsification is avoided. Ultimately, a highly efficient anti-emulsification mass transfer function is achieved without external power, thus solving the problem of a common chemical product layered extraction device that only includes the function of layered extraction. While stirring can increase the contact area between two phases and accelerate the diffusion rate of solute in the solvent, it lacks the function of non-powered anti-emulsification. It cannot guarantee that it can reduce the energy consumption during layered extraction or that the chemical products will not emulsify during stirring. The shear force and turbulence generated by stirring can easily disrupt the interfacial equilibrium of immiscible liquids, causing them to disperse into tiny droplets. High-speed mechanical shearing breaks large droplets into small particles, and turbulence can achieve uniform dispersion. The presence of surfactants can adsorb onto the droplet surface to form a protective film to reduce interfacial tension and enhance stability. Even without emulsifiers, continuous mechanical breaking and bubble entrainment can still cause temporary emulsification. The stirring speed and the shear strength controlled by the equipment structure directly affect the degree of emulsification. Excessive speed not only aggravates the emulsification effect and increases energy consumption, but also weakens the efficiency of layered extraction.

Claims

1. A chemical product layer extraction apparatus, comprising a layer extraction chamber (1); characterized in that: It also includes a flow guide plate (2) and a packing plate (6). The flow guide plate (2) is fixedly connected inside the layered extraction box (1). The flow guide plate (2) is used to guide the chemical products. Two snap-fit ​​grooves (3) are opened on the top of the flow guide plate (2). Two support frames (5) are set inside the layered extraction box (1). One end of the support frame (5) near the flow guide plate (2) is inserted into the snap-fit ​​groove (3). The packing plate (6) is fixedly connected to the inner side of the support frame (5). The packing plate (6) is used to increase the contact area between one phase and another phase.

2. The chemical product layer extraction apparatus according to claim 1, characterized in that: The internal structure of the layered extraction box (1) is fixedly connected to two support bars (4), and two support frames (5) are located on top of the two support bars (4).

3. The chemical product layer extraction apparatus according to claim 1, characterized in that: The bottom of the guide plate (2) is fixedly connected with multiple support plates (7) at equal intervals. The bottom of the multiple support plates (7) is welded to the bottom of the layered extraction box (1). Multiple reinforcing connecting plates (8) are fixedly connected between the multiple support plates (7).

4. The chemical product layer extraction apparatus according to claim 1, characterized in that: Two plate-taking slots (9) are opened on the left side of the layered extraction box (1). A sealing panel (10) is fixedly connected to the end of the support frame (5) away from the guide plate (2). The sealing panel (10) is inserted into the inside of the plate-taking slot (9).

5. The chemical product layer extraction apparatus according to claim 1, characterized in that: Self-locking casters (12) are installed at the four corners of the bottom of the layered extraction box (1), and multiple drain pipes (11) are fixedly connected at equal intervals on the lower left side of the layered extraction box (1).

6. The chemical product layer extraction apparatus according to claim 1, characterized in that: A top plate (13) is fixedly connected to the top of the layered extraction chamber (1), and an observation window (14) is provided on the front side of the layered extraction chamber (1).

7. The chemical product layer extraction apparatus according to claim 1, characterized in that: A feed frame (15) is fixedly connected to the upper right side of the layered extraction box (1), and a protective cover (16) is movably connected to the top of the feed frame (15).

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