An organic solvent waste utilization and recovery device

Abstract

The present invention discloses a device for recycling and utilization of organic solvent waste, which relates to the field of organic solvent recovery. The following scheme is now proposed, which includes: a heating kettle for heating the organic solvent; a fractionating tower for multi-stage distillation of the organic solvent, and the fractionating tower includes: a tower body, the inner cavity of the tower body is communicated with the inner cavity of the heating kettle; a tower plate fixed in the tower body, a liquid receiving groove is opened on one side of the tower plate, a downcomer is fixed on the other side of the tower plate, and an overflow weir is slidably connected in the downcomer; a bubble cap fixed on the tower plate, an adjusting cover is rotatably connected in the bubble cap, and a driving component is assembled on the top of the adjusting cover, and the driving component is used to drive the adjusting cover to rotate; by controlling the opening coincidence degree between the adjusting cover and the bubble cap, the steam flux can be dynamically adjusted, and by adjusting the height of the overflow weir, the flow rate of the organic solvent is controlled to ensure gas-liquid balance and avoid situations such as liquid leakage, thereby improving the recovery effect.

Description

Technical Field

[0001] The present invention relates to the field of organic solvent recovery, and particularly to a device for recycling and utilizing organic solvent waste. Background Art

[0002] Organic solvents are widely used in industries such as chemical engineering, pharmaceuticals, and electronics. However, if the waste liquid generated during their use is directly discharged, it will not only cause waste of resources but also lead to serious environmental pollution problems. Currently, fractionating towers are commonly used in the industry to recover and process organic solvent waste liquid, and component separation and purification are achieved through distillation. However, the traditional fractionating tower faces the following technical bottlenecks in actual operation:

[0003] For example, an organic solvent recovery device disclosed in Publication No.: CN119548944A includes components such as a pretreatment mechanism, an adsorption mechanism, and a steam furnace;

[0004] At present, there are some problems with fractionating towers. The structures of conventional tower plates (such as sieve plates and valve trays) are fixed, and the opening area of the bubble caps is not adjustable, making it impossible to adapt to the dynamic separation requirements of solvents with different boiling points. For example, when treating high-viscosity or easily coking waste liquid, fluctuations in the steam flux easily lead to uneven distribution of gas-liquid two-phase in the tower, causing flooding or weeping phenomena and reducing the separation efficiency;

[0005] Secondly, the height of the traditional overflow weir is fixed and cannot adjust the flow rate of the downcomer in real time according to the liquid level change in the tower. When the feed component is complex or the flow rate fluctuates, it is difficult to stabilize the liquid holdup on the tower plate, and the gas-liquid contact time is insufficient, resulting in entrainment of light components or residue of heavy components, affecting the product purity.

[0006] To maintain the separation effect, the prior art often solves the problem of gas-liquid imbalance by coarsely adjusting the external heating power or reflux ratio, resulting in a significant increase in energy consumption. In addition, after the tower plate is blocked or fouled, it needs to be shut down for cleaning, further reducing the equipment utilization rate. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to propose a device for recycling and utilizing organic solvent waste to achieve real-time adjustment of gas-liquid flow rates and ensure gas-liquid balance.

[0008] To achieve the above technical purpose, the present invention provides a device for recycling and utilizing organic solvent waste, including:

[0009] A heating kettle for heating organic solvents;

[0010] A fractionating tower for multi-stage distillation of organic solvents, and the fractionating tower includes:

[0011] A tower body, and the inner cavity of the tower body is communicated with the inner cavity of the heating kettle;

[0012] The tray is fixed inside the tower body. A liquid receiving groove is formed on one side of the tray, and a downcomer is fixed on the other side of the tray. An overflow weir is slidably connected inside the downcomer.

[0013] The bubble cap is fixed on the tray. An adjusting cover is rotatably connected inside the bubble cap, and a driving assembly is assembled on the top of the adjusting cover. The driving assembly is used to drive the adjusting cover to rotate.

[0014] Preferably, the rotating assembly includes: a fixed seat fixed on the bubble cap; a synchronous shaft rotatably connected to the fixed seat; a driving shaft rotatably connected to the fixed seat; a driven worm wheel fixed at the end of the adjusting cover. A synchronous worm is fixed on the outer surface of the synchronous shaft, and the synchronous worm meshes with the driven worm wheel. A driving worm is fixed on the outer surface of the driving shaft, a synchronous worm wheel is fixed on the outer surface of the synchronous shaft, and the driving worm meshes with the synchronous worm wheel. A second motor is fixed on the outer surface of the tower body, and the output end of the second motor is fixedly connected to the end of the driving shaft.

[0015] Preferably, a rack is fixed on the outer surface of the overflow weir, a first motor is fixed on the outer surface of the tower body, an adjusting gear is fixed at the output end of the first motor, and the adjusting gear meshes with the rack.

[0016] Preferably, a stirring shaft is rotatably connected inside the heating kettle, a reciprocating lead screw is rotatably connected to the bottom of the stirring shaft, a partition plate is fixed inside the heating kettle, and the partition plate divides the inside of the heating kettle into an upper first chamber and a lower second chamber. The middle of the partition plate is hollowed out. A screw barrel is threadedly connected to the outer surface of the reciprocating lead screw, a filter plate is fixed on the outer surface of the screw barrel, and the outer periphery of the filter plate is vertically and slidably sealedly connected to the inner wall of the heating kettle.

[0017] Preferably, a feed pipe for feeding is fixed on the upper surface of the heating kettle, a discharge pipe for discharging is fixed on the side of the heating kettle, and both the feed pipe and the discharge pipe communicate with the first chamber. A stirring motor is fixed on the top of the heating kettle, and the output end of the stirring motor is fixedly connected to the stirring shaft.

[0018] Preferably, a liquid inlet cylinder is telescopically connected to the outer surface of the screw barrel, the filter plate is fixed on the liquid inlet cylinder, and a first spring is arranged between the screw barrel and the liquid inlet cylinder. Both ends of the first spring abut against the screw barrel and the liquid inlet cylinder respectively.

[0019] Preferably, the liquid inlet cylinder is vertically through, and a valve plate is hinged to the bottom of the liquid inlet cylinder. The valve plate is used to close the bottom of the liquid inlet cylinder, and a torsion spring is fixed at the hinge point of the valve plate and the liquid inlet cylinder. The torsion spring is used to provide a reset elastic force for the valve plate.

[0020] Preferably, a clutch assembly for controlling the linkage of the stirring shaft and the reciprocating lead screw is fixed between the stirring shaft and the reciprocating lead screw.

[0021] Preferably, the clutch assembly includes: a connecting seat fixed on the partition board, and the stirring shaft is rotatably connected to the connecting seat; an electromagnet fixed on the surface of the sleeve; the sleeve is slidably connected to the reciprocating screw rod, and convex blocks matched with the sleeve are uniformly fixed at the adjacent ends of the stirring shaft and the reciprocating screw rod; a valve seat rotatably connected to the sleeve, and the valve seat is used to close the hollowed-out part on the partition board; a second spring, with two ends respectively abutted against the electromagnet and the valve seat.

[0022] Preferably, a discharge port is formed at the bottom of the heating kettle.

[0023] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0024] By controlling the opening coincidence degree between the adjusting cover and the bubble cap, the steam flux can be dynamically adjusted. By driving the adjusting gear to rotate through the first motor, the adjusting gear can move the rack, thereby adjusting the height of the overflow weir and controlling the flow rate of the organic solvent. By controlling the flow rate of the organic solvent and the steam flux, the gas-liquid balance can be ensured, avoiding situations such as liquid leakage, and improving the recovery effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0026] Figure 1 It is a front view structural diagram of a device for recycling waste organic solvents provided by the present invention;

[0027] Figure 2 It is a partial cross-sectional structural diagram of the fractionating tower of a device for recycling waste organic solvents provided by the present invention;

[0028] Figure 3 It is a front cross-sectional structural diagram of the fractionating tower of a device for recycling waste organic solvents provided by the present invention;

[0029] Figure 4 It is an enlarged structural diagram at position A of a device for recycling waste organic solvents provided by the present invention;

[0030] Figure 5 It is an enlarged structural diagram at position B of a device for recycling waste organic solvents provided by the present invention;

[0031] Figure 6 It is a front cross-sectional structural diagram of the heating kettle of a device for recycling waste organic solvents provided by the present invention;

[0032] Figure 7 Schematic partial sectional view of the screw barrel and clutch assembly of a recycling device for waste utilization of organic solvents provided by the present invention;

[0033] Figure 8 Schematic view of the valve seat in the open state of a recycling device for waste utilization of organic solvents provided by the present invention;

[0034] Figure 9 Schematic sectional view of the clutch assembly of a recycling device for waste utilization of organic solvents provided by the present invention.

[0035] Description of the drawings: 1. Heating kettle; 11. Feed pipe; 12. Discharge pipe; 13. Stirring motor; 2. Stirring shaft; 21. Reciprocating lead screw; 3. Partition board; 4. Screw barrel; 41. Liquid inlet barrel; 42. First spring; 43. Valve plate; 5. Filter plate; 6. Clutch assembly; 61. Connection seat; 62. Electromagnet; 63. Sleeve; 64. Valve seat; 65. Second spring; 7. Fractionating tower; 71. Tower body; 72. Tray; 721. Liquid receiving trough; 722. Vent pipe; 73. Downcomer; 731. Overflow weir; 7311. Rack; 74. First motor; 741. Adjusting gear; 75. Second motor; 8. Bubble cap; 81. Adjusting cover; 811. Driven worm gear; 82. Fixed seat; 83. Synchronous shaft; 831. Synchronous worm; 832. Synchronous worm gear; 84. Driving shaft; 841. Driving worm. Detailed implementation manners

[0036] The following description is merely exemplary in nature and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the embodiments of the present disclosure, and does not necessarily show the specific dimensions and their ratios of the embodiments of the present disclosure. In a specific part of a specific drawing, the relevant details or structures of the embodiments of the present disclosure may be illustrated in an exaggerated manner.

[0037] Example 1, refer to Figure 1 - Figure 9 As shown, it includes: a heating kettle 1 for heating organic solvents; a fractionating tower 7 for multi-stage distillation of organic solvents. The fractionating tower 7 includes: a tower body 71, the inner cavity of the tower body 71 is communicated with the inner cavity of the heating kettle 1; a tray 72 fixed inside the tower body 71, a liquid receiving trough 721 is formed on one side of the tray 72, a downcomer 73 is fixed on the other side of the tray 72, and an overflow weir 731 is slidably connected inside the downcomer 73; a bubble cap 8 fixed on the tray 72, an adjusting cover 81 is rotatably connected inside the bubble cap 8, and a driving assembly is assembled on the top of the adjusting cover 81 for driving the adjusting cover 81 to rotate.

[0038] Further, the rotating assembly includes: a fixed seat 82 fixed to the bubble cap 8; a synchronous shaft 83 rotatably connected to the fixed seat 82; a driving shaft 84 rotatably connected to the fixed seat 82; a driven worm wheel 811 fixed to the end of the adjusting cover 81, a synchronous worm 831 is fixed to the outer surface of the synchronous shaft 83, and the synchronous worm 831 meshes with the driven worm wheel 811; a driving worm 841 is fixed to the outer surface of the driving shaft 84, a synchronous worm wheel 832 is fixed to the outer surface of the synchronous shaft 83, and the driving worm 841 meshes with the synchronous worm wheel 832. A second motor 75 is fixed to the outer surface of the tower body 71, and the output end of the second motor 75 is fixedly connected to the end of the driving shaft 84;

[0039] Exemplarily, the second motor 75 drives the driving shaft 84 to rotate. The driving shaft 84 drives the synchronous worm wheel 832 to rotate through the driving worm 841. The synchronous worm wheel 832 can drive the synchronous shaft 83 to rotate. The synchronous shaft 83 drives the adjusting cover 81 to rotate through the cooperation of the synchronous worm 831 and the driven worm wheel 811, so as to control the coincidence degree of the holes on the surface of the adjusting cover 81 and the holes on the surface of the bubble cap 8, thereby controlling the steam discharge speed.

[0040] Specifically, a rack 7311 is fixed to the outer surface of the overflow weir 731, a first motor 74 is fixed to the outer surface of the tower body 71, an adjusting gear 741 is fixed to the output end of the first motor 74, and the adjusting gear 741 meshes with the rack 7311;

[0041] Exemplarily, the first motor 74 drives the adjusting gear 741 to rotate. The adjusting gear 741 can then move the rack 7311, thereby adjusting the height of the overflow weir 731 and controlling the flow rate of the organic solvent.

[0042] Refer to Figure 6 As shown, a stirring shaft 2 is rotatably connected inside the heating kettle 1. Stirring blades are evenly fixed to the outer surface of the stirring shaft 2. A feed pipe 11 for feeding is fixed to the upper surface of the heating kettle 1, and a discharge pipe 12 for discharging is fixed to the side surface of the heating kettle 1; a stirring motor 13 is fixed to the top of the heating kettle 1, and the output end of the stirring motor 13 is fixedly connected to the stirring shaft 2;

[0043] Exemplarily, the initial organic solvent first enters the tower body 71. After reaching the bottom, the organic solvent is added into the heating kettle 1 through the feed pipe 11. The stirring motor 13 drives the stirring shaft 2 to rotate to stir the organic solvent, so that the organic solvent is fully heated. The generated gas after heating is sent into the tower body 71 through the discharge pipe 12. The steam passes upward through the ventilation pipe 722, and the steam in the bubble cap 8 is dispersed and discharged from the openings on the surface of the bubble cap 8. The steam further heats the organic solvent flowing on the tray 72. Refer to Figure 3As shown, the organic solvent flows through multiple trays 72 in an S-shaped path from top to bottom, and is heated and distilled multiple times. The distilled gas is discharged from the top of the tower body 71 into the condenser, and the components in the organic solvent are obtained after condensation. The specific condensation structure and principle are known public technologies and will not be elaborated here.

[0044] Further, referring to Figure 6 and Figure 9 As shown, a partition plate 3 is fixed in the heating kettle 1, dividing the inside of the heating kettle 1 into an upper first chamber and a lower second chamber. The feed pipe 11 and the discharge pipe 12 are both communicated with the first chamber. The organic solvent is heated in the first chamber. A reciprocating lead screw 21 is fixed to the bottom of the stirring shaft 2. A nut barrel 4 is threadedly connected to the outer surface of the reciprocating lead screw 21. When the reciprocating lead screw 21 rotates and the nut barrel 4 remains stationary, the nut barrel 4 will reciprocate on the reciprocating lead screw 21. A filter plate 5 is fixed to the nut barrel 4, and the outer periphery of the filter plate 5 is slidably and sealedly connected perpendicular to the heating kettle 1, that is, the filter plate 5 can move vertically in the second chamber and limit the nut barrel 4 to prevent the nut barrel 4 from rotating with the reciprocating lead screw 21. The surface of the filter plate 5 is evenly provided with filter holes for filtering out solid substances in the organic solvent. The middle of the partition plate 3 is hollowed out for communicating the first chamber and the second chamber. The organic solvent in the first chamber flows into the second chamber through the hollowed-out part in the middle of the partition plate 3. Through the vertical reciprocating movement of the filter plate 5, the solid substances are squeezed to the bottom of the heating kettle 1, and the organic solvent is filtered above the filter plate 5 and can flow back to the first chamber through the hollowed-out part in the middle of the partition plate 3 for continuous heating;

[0045] Furthermore, as shown in Figure 3 and Figure 4 a liquid inlet cylinder 41 is telescopically connected to the outer surface of the nut barrel 4, and the filter plate 5 is fixed to the liquid inlet cylinder 41. A first spring 42 is provided between the nut barrel 4 and the liquid inlet cylinder 41, and both ends of the first spring 42 abut against the nut barrel 4 and the liquid inlet cylinder 41 respectively. By telescopically connecting the liquid inlet cylinder 41 to the nut barrel 4, the distance between the filter plate 5 and the bottom of the heating kettle 1 can be changed;

[0046] Exemplarily, if the amount of solid substances between the filter plate 5 and the heating kettle 1 exceeds the minimum distance between the filter plate 5 and the bottom of the heating kettle 1, the filter plate 5 can move upward with the liquid inlet cylinder 41, thereby increasing the minimum distance between the filter plate 5 and the bottom of the heating kettle 1 and increasing the amount of solid substances that can be compressed at one time.

[0047] Referring to Appendix Figure 3 and Appendix Figure 4 As shown, the liquid inlet cylinder 41 is vertically through for passing the organic solvent into the second chamber, and a valve plate 43 is hinged to the bottom of the liquid inlet cylinder 41. The valve plate 43 is used to close the bottom of the liquid inlet cylinder 41. A torsion spring is fixed to the hinge point of the valve plate 43 and the liquid inlet cylinder 41. The torsion spring is used to provide a reset elastic force for the valve plate 43 so that the valve plate 43 can always maintain the state as shown in Figure 3 when no external force is applied;

[0048] Exemplarily, when the liquid inlet cylinder 41 moves downward with the filter plate 5, at this time, the valve plate 43 is subjected to an upward thrust, causing the valve plate 43 to press on the liquid inlet cylinder 41. The organic solvent can only filter upward through the filter plate 5, and the solid matter remains between the filter plate 5 and the heating kettle 1. When the liquid inlet cylinder 41 moves upward with the filter plate 5, the valve plate 43 is subjected to a downward thrust, pushing the valve plate 43 away. Refer to Figure 4 As shown, the organic solvent in the first chamber sequentially passes through the hollow part in the middle of the partition plate 3, the liquid inlet cylinder 41, the filter plate 5, and reaches between the bottom of the heating kettle 1.

[0049] A discharge port is provided at the bottom of the heating kettle 1, and the opening and closing of the discharge port are controlled by an electromagnetic valve, which is used to discharge the solid matter in the organic solvent.

[0050] Example 2, refer to Figure 7 、 Figure 8 and Figure 9 As shown, based on Example 1, the difference in Example 2 is that the bottom of the stirring shaft 2 is rotatably connected to the reciprocating lead screw 21, and a clutch assembly 6 for controlling the linkage between the stirring shaft 2 and the reciprocating lead screw 21 is fixed between the stirring shaft 2 and the reciprocating lead screw 21. The clutch assembly 6 includes: a connecting seat 61 fixed on the partition plate 3, and the stirring shaft 2 is rotatably connected to the connecting seat 61; an electromagnet 62 fixed on the surface of the sleeve 63; a sleeve 63 slidably connected to the reciprocating lead screw 21, and convex blocks cooperating with the sleeve 63 are uniformly fixed at the adjacent ends of the stirring shaft 2 and the reciprocating lead screw 21; a valve seat 64 rotatably connected to the sleeve 63, and the valve seat 64 is used to close the hollow part on the partition plate 3; a second spring 65 with two ends respectively abutted against the electromagnet 62 and the valve seat 64, and the second spring 65 is used to provide elastic force to the valve seat 64, so that when no external force is applied, the valve seat 64 can always remain as Figure 7 As shown, the valve seat 64 blocks the hollow part in the middle of the partition plate 3, making the first chamber in a closed state, and the sleeve 63 is far away from the stirring shaft 2, and the rotation of the stirring shaft 2 will not drive the rotation of the reciprocating lead screw 21;

[0051] Refer to Figure 4 As shown, when the electromagnet 62 is energized to adsorb the valve seat 64, the valve seat 64 moves away from the hollow part in the middle of the partition plate 3, making the first chamber communicate with the second chamber, and the sleeve 63 engages with the convex block on the stirring shaft 2, so that the stirring shaft 2 drives the reciprocating lead screw 21 to rotate through the sleeve 63.

[0052] The purpose is to avoid the organic solvent falling into the second chamber in the initial stage of heating, which affects the heating effect.

[0053] The exemplary embodiments of the solution proposed by the present disclosure have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. An organic solvent waste utilization and recovery device, characterized in that, Including: A heating kettle (1) for heating an organic solvent; A fractionating tower (7) for multi-stage distillation of an organic solvent, and the fractionating tower (7) includes: A tower body (71), the inner cavity of the tower body (71) being communicated with the inner cavity of the heating kettle (1); A tray (72) fixed inside the tower body (71), a liquid receiving groove (721) being formed on one side of the tray (72), a downcomer (73) being fixed on the other side of the tray (72), and an overflow weir (731) being slidably connected inside the downcomer (73); A bubble cap (8) fixed on the tray (72), an adjusting cover (81) being rotatably connected inside the bubble cap (8), and a driving assembly being assembled on the top of the adjusting cover (81) for driving the adjusting cover (81) to rotate; A rack (7311) is fixed on the outer surface of the overflow weir (731), a first motor (74) is fixed on the outer surface of the tower body (71), an adjusting gear (741) is fixed on the output end of the first motor (74), and the adjusting gear (741) meshes with the rack (7311).

2. The recycling device for waste utilization of organic solvents according to claim 1, characterized in that, The driving assembly includes: a fixed seat (82) fixed on the bubble cap (8); a synchronous shaft (83) rotatably connected to the fixed seat (82); a driving shaft (84) rotatably connected to the fixed seat (82); a driven worm gear (811) fixed to the end of the adjusting cover (81), a synchronous worm (831) being fixed on the outer surface of the synchronous shaft (83), and the synchronous worm (831) meshing with the driven worm gear (811); a driving worm (841) is fixed on the outer surface of the driving shaft (84), a synchronous worm gear (832) is fixed on the outer surface of the synchronous shaft (83), and the driving worm (841) meshes with the synchronous worm gear (832), a second motor (75) is fixed on the outer surface of the tower body (71), and the output end of the second motor (75) is fixedly connected to the end of the driving shaft (84).

3. An organic solvent waste utilization and recovery device according to claim 1, characterized in that, A stirring shaft (2) is rotatably connected inside the heating kettle (1), a reciprocating screw rod (21) is rotatably connected to the bottom of the stirring shaft (2), a partition plate (3) is fixed inside the heating kettle (1), the partition plate (3) divides the inside of the heating kettle (1) into an upper first chamber and a lower second chamber, and the middle of the partition plate (3) is hollowed out; a screw barrel (4) is threadedly connected to the outer surface of the reciprocating screw rod (21), a filter plate (5) is fixed on the outer surface of the screw barrel (4), and the outer periphery of the filter plate (5) is vertically and slidably sealedly connected to the inner wall of the heating kettle (1).

4. An organic solvent waste utilization and recovery device according to claim 3, characterized in that, A feed pipe (11) for feeding is fixed on the upper surface of the heating kettle (1), a discharge pipe (12) for discharging is fixed on the side of the heating kettle (1), and both the feed pipe (11) and the discharge pipe (12) are communicated with the first chamber; a stirring motor (13) is fixed on the top of the heating kettle (1), and the output end of the stirring motor (13) is fixedly connected to the stirring shaft (2).

5. An organic solvent waste utilization and recovery device according to claim 4, characterized in that, A liquid inlet cylinder (41) is telescopically connected to the outer surface of the screw cylinder (4). The filter plate (5) is fixed on the liquid inlet cylinder (41). A first spring (42) is provided between the screw cylinder (4) and the liquid inlet cylinder (41), and the two ends of the first spring (42) abut against the screw cylinder (4) and the liquid inlet cylinder (41) respectively.

6. An organic solvent waste utilization and recovery device according to claim 5, characterized in that, The liquid inlet cylinder (41) is vertically through, and a valve plate (43) is hinged to the bottom of the liquid inlet cylinder (41). The valve plate (43) is used to close the bottom of the liquid inlet cylinder (41). A torsion spring is fixed at the hinge point between the valve plate (43) and the liquid inlet cylinder (41), and the torsion spring is used to provide a reset elastic force for the valve plate (43).

7. An organic solvent waste utilization and recovery device according to claim 6, characterized in that, A clutch assembly (6) for controlling the linkage between the stirring shaft (2) and the reciprocating lead screw (21) is fixed between the stirring shaft (2) and the reciprocating lead screw (21).

8. An organic solvent waste utilization and recovery device according to claim 7, characterized in that, The clutch assembly (6) includes: a connecting seat (61) fixed on the partition plate (3), and the stirring shaft (2) is rotatably connected to the connecting seat (61); an electromagnet (62) fixed on the surface of the sleeve (63); the sleeve (63) is slidably connected to the reciprocating lead screw (21), and convex blocks cooperating with the sleeve (63) are uniformly fixed at the adjacent ends of the stirring shaft (2) and the reciprocating lead screw (21); a valve seat (64) rotatably connected to the sleeve (63), and the valve seat (64) is used to close the hollow part on the partition plate (3); a second spring (65) with two ends abutting against the electromagnet (62) and the valve seat (64) respectively.

9. An organic solvent waste utilization and recovery device according to claim 1, characterized in that, A discharge port is formed at the bottom of the heating kettle (1).

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