Structure for recovering hexane from polyethylene

Abstract

The structure comprises a base, a supporting column is arranged on the base, a fixing piece is arranged on the supporting column, a collecting tank is arranged on the fixing piece, a feeding port is formed in the collecting tank, a first connecting piece is arranged on the feeding port, and a ball valve is composed of a valve seat, a valve body, a ball body, a valve rod, a connecting rod and an operating panel. A discharge port is arranged outside the collecting tank, the discharge port is fixedly connected with a conveying pipe, a water outlet is arranged below the collecting tank, and an air inlet is arranged outside the collecting tank. By means of the components, the device achieves the coagulation effect on hexane liquid through nitrogen pressurization, impurities in the hexane liquid are removed through pressurization water treatment by means of the characteristic that hexane is insoluble in water, and finally discharged water conveys the hexane liquid to a polyethylene device through the conveying pipe connected with the discharging port to achieve cyclic utilization of the hexane liquid. The effect of reducing the cost of the hexane liquid required by production is achieved, and the effect of environmental protection is further achieved.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection and energy conservation technology, and in particular to a structure for recovering hexane from polyethylene. Background Technology

[0002] Existing structures for recovering hexane from polyethylene inevitably suffer from incomplete collection of liquid hexane during production or leakage during transportation, leading to environmental pollution. Furthermore, the recovery process requires multiple steps such as dissolution, filtration, and drying, demanding sophisticated equipment and consuming significant energy, thus increasing overall costs. For example, a structure for recovering hexane from polyethylene disclosed in Chinese patent number CN200520142462.3, in which liquid hexane, being a volatile organic solvent, may release harmful substances if not recovered completely or handled improperly, causing environmental pollution and health hazards. To address these issues, a novel fully enclosed, controllable polyethylene hexane recovery and recycling device is provided. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a structure for recovering hexane from polyethylene. This device achieves precise control of nitrogen flow through an air inlet on the outer surface of the collection tank and a ball valve threadedly connected to it. The device uses nitrogen pressurization to achieve the sedimentation of liquid hexane. Taking advantage of hexane's insolubility in water, impurities in the liquid hexane are removed through pressurized water treatment. Finally, the discharged water and the hexane liquid are transported to the polyethylene unit through a conveying pipe connected to the outlet, achieving the recycling of the liquid hexane. By collecting and recycling liquid hexane using this device, the cost of producing the required liquid hexane is reduced, while simultaneously preventing the volatile liquid hexane from emitting toxic gases that could damage the environment, thus achieving an environmental protection effect.

[0004] This utility model also provides a structure for recovering hexane from polyethylene as described above, comprising: a base, a support column fixedly connected to the upper surface of the base, a fixing member fixedly connected to the upper surface of the support column, a collection tank fixedly connected to the upper surface of the fixing member, an inlet provided on the upper surface of the collection tank, a first connecting member fixedly connected to the upper surface of the inlet, a valve seat threadedly connected to the upper surface of the first connecting member, a bolt threadedly connected to the upper surface of the valve seat, a nut threadedly connected to the outer surface of the bolt, a valve body fixedly connected to the upper surface of the valve seat, a valve seat fixedly connected to the upper surface of the valve body, a threaded hole provided on the upper surface of the valve body, a ball rotatably connected to the inner surface of the valve body, a valve stem fixedly connected to the outer surface of the ball, a connecting rod fixedly connected to the outer surface of the valve stem, and an operating disc fixedly connected to the other end of the connecting rod. The valve seat, valve body, ball, valve stem, connecting rod, and operating disc constitute a ball valve. Through the aforementioned components, the device achieves precise control of nitrogen flow via an air inlet on the outer surface of the collection tank and a ball valve threadedly connected to it. The device collects hexane liquid by pressurizing nitrogen, and utilizes the water-insoluble nature of hexane to remove impurities through pressurized water treatment. Finally, the discharged water and hexane liquid are transported to the polyethylene unit via a conveying pipe connected to the outlet, achieving recycling of the hexane liquid. This device reduces the cost of producing hexane liquid while preventing the volatile hexane liquid from emitting toxic gases and causing environmental damage, thus achieving environmental protection.

[0005] According to the structure for recovering hexane from polyethylene provided by this utility model, the outer surface of the collection tank is provided with a discharge port, and a conveying pipe is fixedly connected to the left surface of the discharge port. The conveying pipe is made of transparent PFA plastic, which has a smooth surface, low friction, and does not easily adhere to other substances. Through the above components, the hexane liquid is circulated and transported via the conveying pipe.

[0006] According to the structure for recovering hexane from polyethylene provided by this utility model, a sealing ring is provided at the connection between the outlet and the conveying pipe, and a second liquid level ball is provided inside the conveying pipe. Through these components, the sealing ring at the connection between the outlet and the conveying pipe achieves a sealing effect during the conveying process, preventing leakage of hexane liquid gas. The second liquid level ball enables visibility of the hexane liquid transport within the conveying pipe.

[0007] According to the present invention, a structure for recovering hexane from polyethylene is provided, wherein a liquid level pipe is fixedly connected to the outer surface of the collection tank, a first liquid level bulb is disposed inside the liquid level pipe, the liquid level pipe is connected to the collection tank, and the liquid level pipe is made of transparent PFA plastic. The liquid level pipe and the first liquid level bulb, which are connected to the collection tank, enable visibility of the hexane liquid storage in the collection tank.

[0008] According to the structure for recovering hexane from polyethylene provided by this utility model, a drain outlet is provided on the lower surface of the collection tank, and a third connecting member is fixedly connected to the lower surface of the drain outlet. Through the above-mentioned components, the drain outlet enables the discharge of impurity water from the collection tank.

[0009] According to the structure for recovering hexane from polyethylene provided by this utility model, an air inlet is provided on the outer surface of the collection tank, and a second connecting member is fixedly connected to the left surface of the air inlet. Through the above-mentioned components, nitrogen gas entering through the air inlet pressurizes the hexane liquid, thereby achieving the function of collecting and removing impurities from the hexane liquid.

[0010] According to the structure for recovering hexane from polyethylene provided by this utility model, the left surface of the second connector is threaded with the aforementioned ball valve. The threaded ball valve enables controllability of the nitrogen flow rate entering through the inlet.

[0011] According to the structure for recovering hexane from polyethylene provided by this utility model, a thermometer and a pressure gauge are installed on the outer surface of the collection tank. The thermometer monitors the temperature inside the collection tank, and the pressure gauge monitors the pressure inside the collection tank, thereby avoiding safety hazards caused by hexane leakage or excessively high or low temperatures.

[0012] Compared with existing technologies, this polyethylene hexane recovery structure allows for precise control of nitrogen flow through an air inlet on the outer surface of the collection tank and a ball valve threaded to it. The device collects liquid hexane by pressurizing nitrogen, removes impurities from the liquid hexane by pressurizing and flushing it with water, and finally discharges the water and transports the liquid hexane to the polyethylene unit through a conveying pipe connected to the outlet, thus achieving the recycling of liquid hexane. By collecting and recycling liquid hexane through this device, the cost of liquid hexane required for production is reduced, while avoiding the volatile nature of liquid hexane as a toxic gas that could damage the environment, thereby achieving environmental protection. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is an isometric view of the structure of the polyethylene hexane recovery invention according to this utility model;

[0015] Figure 2 This is a front view of the structure of the polyethylene hexane recovery invention.

[0016] Figure 3 This is a top view of the structure of the polyethylene hexane recovery device of this utility model;

[0017] Figure 4 The structure of this utility model for recovering hexane from polyethylene Figure 2 Sectional view in;

[0018] Figure 5 The structure of this utility model for recovering hexane from polyethylene Figure 1 Cross-sectional view of the valve body.

[0019] Legend:

[0020] 1. Base; 2. Support column; 3. Fixing component; 4. Collection tank; 5. Thermometer; 6. Pressure gauge; 7. Inlet; 8. First connecting component; 9. Valve seat; 10. Bolt; 11. Nut; 12. Valve body; 13. Ball; 14. Valve stem; 15. Connecting rod; 16. Control panel; 17. Air inlet; 18. Second connecting component; 19. Drain outlet; 20. Third connecting component; 21. Threaded hole; 22. Liquid level pipe; 23. First liquid level ball; 24. Discharge outlet; 25. Sealing ring; 26. Conveying pipe; 27. Second liquid level ball. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model provides a structure for recovering hexane from polyethylene, comprising: a base 1, a support column 2 fixedly connected to the upper surface of the base 1, a fixing member 3 fixedly connected to the upper surface of the support column 2, a collection tank 4 fixedly connected to the upper surface of the fixing member 3, an inlet 7 provided on the upper surface of the collection tank 4, a first connecting member 8 fixedly connected to the upper surface of the inlet 7, a valve seat 9 threadedly connected to the upper surface of the first connecting member 8, a bolt 10 threadedly connected to the upper surface of the valve seat 9, a nut 11 threadedly connected to the outer surface of the bolt 10, a valve body 12 fixedly connected to the upper surface of the valve seat 9, a threaded hole 21 provided on the upper surface of the valve body 12, a ball 13 rotatably connected to the inner surface of the valve body 12, a valve stem 14 fixedly connected to the outer surface of the ball 13, a connecting rod 15 fixedly connected to the outer surface of the valve stem 14, and an operating disc 16 fixedly connected to the other end of the connecting rod 15. The valve seat 9, valve body 12, ball 13, valve stem 14, connecting rod 15, and operating disc 16 constitute a ball valve.

[0023] Specifically, the ball valve, consisting of valve seat 9, valve body 12, ball 13, valve stem 14, connecting rod 15, and operating disc 16 connected by threads at the inlet, enables the controlled collection of hexane liquid produced by the polyethylene unit. The ball valve connects to the outlet of the polyethylene unit through the threaded hole on the valve body 12.

[0024] Reference Figure 1 , 5 The outer surface of the collection tank 4 is provided with an air inlet 17, and a second connector 18 is fixedly connected to the left surface of the air inlet 17. The ball valve mentioned above is threadedly connected to the left surface of the second connector 18.

[0025] Specifically, hexane liquid is collected by pressurizing with nitrogen, and impurities in the liquid are removed by pressurizing and flushing with water, taking advantage of the fact that hexane is insoluble in water.

[0026] Reference Figure 1 , 3 A liquid level pipe 22 is fixedly connected to the outer surface of the collection tank 4. A first liquid level ball 23 is installed inside the liquid level pipe 22. The liquid level pipe 22 is connected to the collection tank 4. A drain outlet 19 is provided on the lower surface of the collection tank 4. A third connector 20 is fixedly connected to the lower surface of the drain outlet 19. A thermometer 5 is provided on the outer surface of the collection tank 4. A pressure gauge 6 is provided on the outer surface of the collection tank 4. A discharge port 24 is provided on the outer surface of the collection tank 4. A conveying pipe 26 is fixedly connected to the left surface of the discharge port 24. A sealing ring 25 is provided at the connection between the discharge port 24 and the conveying pipe 26. A second liquid level ball 27 is installed inside the conveying pipe 26.

[0027] Specifically, the hexane liquid in the collection tank 4 and the delivery pipe 26 is made visible by the level ball installed in the level pipe 22 and the delivery pipe 26. The temperature and pressure of the collection tank 4 are controlled by the pressure gauge 6 and the thermometer 5 installed on the collection tank 4, thereby avoiding safety hazards caused by hexane liquid leakage or excessively high or low temperatures.

[0028] Working principle: The hexane liquid is collected in a controlled manner by the ball valve at the inlet on the upper surface of the collection tank 4. The device further precipitates the hexane liquid by pressurizing it with nitrogen. Taking advantage of the fact that hexane is insoluble in water, impurities in the hexane liquid are removed by pressurized water treatment. The water containing impurities is discharged through the drain outlet 19. Finally, the hexane liquid is transported to the polyethylene unit by secondary pressurization with nitrogen and conveying pipe 26 to achieve the collection and recycling of the hexane liquid.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A polyethylene recycle hexane structure, characterized by, include: A base (1) is fixedly connected to a support column (2) on its upper surface. A fixing member (3) is fixedly connected to the upper surface of the support column (2). A collection tank (4) is fixedly connected to the upper surface of the fixing member (3). An inlet (7) is provided on the upper surface of the collection tank (4). A first connecting member (8) is fixedly connected to the upper surface of the inlet (7). A valve seat (9) is threadedly connected to the upper surface of the first connecting member (8). A bolt (10) is threadedly connected to the upper surface of the valve seat (9). A nut (11) is threadedly connected to the outer surface of the bolt (10). A valve body (12) is fixedly connected to the upper surface of the valve seat (9). A valve seat (9) is fixedly connected to the upper surface of the valve body (12). A threaded hole (21) is provided on the upper surface of the valve body (12). A ball (13) is rotatably connected to the inner surface of the valve body (12). A valve stem (14) is fixedly connected to the outer surface of the ball (13). A connecting rod (15) is fixedly connected to the outer surface of the valve stem (14). An operating disc (16) is fixedly connected to the other end of the connecting rod (15). The valve stem (14) is rotatably connected to the valve body (12). The valve seat (9), valve body (12), ball (13), valve stem (14), connecting rod (15), and operating disc (16) constitute a ball valve.

2. The polyethylene hexane recycling structure of claim 1, wherein, The outer surface of the collection tank (4) is provided with a discharge port (24), and a conveying pipe (26) is fixedly connected to the left surface of the discharge port (24). The material of the conveying pipe (26) is transparent PFA plastic.

3. The polyethylene hexane recovery structure of claim 2, wherein, A sealing ring (25) is provided at the connection between the discharge port (24) and the conveying pipe (26), and a second liquid level ball (27) is provided inside the conveying pipe (26).

4. The polyethylene hexane recovery structure of claim 1, wherein, The outer surface of the collection tank (4) is fixedly connected to a liquid level tube (22), and a first liquid level ball (23) is provided inside the liquid level tube (22). The liquid level tube (22) is connected to the collection tank (4), and the material of the liquid level tube (22) is transparent PFA plastic.

5. The polyethylene hexane recovery structure of claim 1, wherein, The lower surface of the collection tank (4) is provided with a drain outlet (19), and a third connector (20) is fixedly connected to the lower surface of the drain outlet (19).

6. The polyethylene hexane recycling structure of claim 1, wherein, The outer surface of the collection tank (4) is provided with an air inlet (17), and a second connector (18) is fixedly connected to the left surface of the air inlet (17).

7. The polyethylene hexane recovery structure of claim 6, wherein, The ball valve described above is threaded onto the left surface of the second connector (18).

8. The polyethylene hexane recycling structure of claim 1, wherein, A thermometer (5) is provided on the outer surface of the collection tank (4), and a pressure gauge (6) is provided on the outer surface of the collection tank (4).

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