Tower for separating sulfolane from sulfolane

Abstract

The separating tower comprises a separating tower main body, a lifting adjusting assembly is arranged at the top of the separating tower main body, a driving mechanism is installed at the moving end of the lifting adjusting assembly, the output end of the driving mechanism is connected with a stirring shaft, and the stirring shaft is connected with a motor. The utility model relates to the technical field of sulfolane preparation, in particular to a separation tower for preparing sulfolane, which is characterized in that a lifting adjusting component is arranged at the upper part of a top cover of a separation tower main body, a stirring shaft is arranged on the top cover of the separation tower main body and extends into the separation tower main body, and the stirring shaft is in sliding sealing fit with the top cover. The position of the stirring mechanism in the vertical direction is adjusted by utilizing the lifting adjusting assembly, disturbance is generated in the vertical direction while horizontal stirring operation is performed, then the action space of the stirring mechanism in the separation tower main body is effectively enlarged, all solvents in the separation tower main body are fully mixed, and the mixing catalysis efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfolane preparation, in particular to a sulfolene separation tower in sulfolane. Background Art

[0002] The sulfolane solvent contains a certain amount of cyclobutene sulfone. Compared with sulfolane, the nature of cyclobutene sulfone is unstable and is easily decomposed to generate SO2 when heated. The higher the content of cyclobutene sulfone, the more SO2 is generated by decomposition, and the stronger the acidity of the solvent. The acidic environment is very likely to promote the high-temperature oxidative decomposition and hydrolysis of sulfolane, further aggravating the degree of deterioration of sulfolane. Therefore, in the production of sulfolane, cyclobutene sulfone needs to be separated to improve its purity for the convenience of users. The current production process mostly uses tetrahydrofuran or a mixed solvent with tetrahydrofuran as the main body for catalytic separation. The separation tower on the existing market does not have the function of facilitating the control of temperature and pressure. The temperature and pressure change greatly during use, resulting in low separation efficiency and poor work efficiency.

[0003] The Chinese patent application with publication number CN209848880U discloses a sulfone separation tower in sulfone. By arranging a control device, a screw cover, a reduction motor, a liquid inlet pipe, a pressure pipe, a booster pump, a pressure sensor, a temperature sensor and a heating resistance wire, the device can achieve the function of conveniently controlling pressure and temperature. However, in actual use, the improved separation tower still has the following defects: 1. The stirring rod in the main body of the separation tower device adopts a fixed design, which has poor uniformity in solvent stirring, affecting the efficiency of mixed catalysis and separation operations; 2. Direct heating by resistance wire has high energy consumption and is in a high temperature state for a long time. The heating wire is prone to aging, which shortens the service life of the equipment. In view of this, in-depth research on the above problems resulted in this case. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a sulfolene sulfolane separation tower, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sulfolane sulfone separation tower, comprising a separation tower body, a lifting and adjusting component is arranged on the top of the separation tower body, a driving mechanism is installed on the movable end of the lifting and adjusting component, an output end of the driving mechanism is connected with a stirring shaft, the stirring shaft passes through the top cover of the separation tower body and extends into the separation tower body, a sliding seal is fitted between the stirring shaft and the top cover, a stirring blade is mounted on the stirring shaft, the side wall of the separation tower body is a jacket structure, an oil bath heating component is connected to the outside of the jacket structure, an air pressure sensor and a temperature sensor are arranged in the separation tower body, a temperature probe is arranged on one side of the temperature sensor, a probe end of the temperature probe extends below the liquid surface of the sulfolane solvent, and a negative pressure air guide component is connected to one side of the separation tower body.

[0006] The above-mentioned lifting and adjusting assembly includes a bracket, a screw module, a guide member and a moving seat. The bracket is arranged on the top cover, the screw module is arranged on the bracket along the vertical direction, the guide member is symmetrically arranged on both sides of the screw module, and the moving seat is arranged on the moving end of the screw module and connected to the guide member.

[0007] The guide member comprises a guide rail and a slider, wherein the guide rail is symmetrically arranged on both sides of the lead screw module, and the slider is slidably sleeved on the guide rail and connected to the moving seat.

[0008] The above-mentioned oil bath heating assembly includes an oil storage tank, a heating rod and an oil circulation component. The oil storage tank is arranged on one side of the separation tower body, the heating rod is inserted into the oil storage tank, the oil circulation component is respectively connected to the oil storage tank and the jacket structure, and a temperature measuring probe is arranged in the oil storage tank.

[0009] The above-mentioned oil circulation component includes an oil supply pump, an oil filling pipe and an oil return pipe. The liquid inlet end of the oil supply pump is connected to the oil storage tank, one end of the oil filling pipe is connected to the lower part of the side wall of the jacket structure, and the other end is connected to the liquid outlet end of the oil supply pump, and one end of the oil return pipe is connected to the upper part of the side wall of the jacket structure, and the other end is connected to the oil storage tank.

[0010] The oil storage tank is filled with high temperature resistant silicone oil.

[0011] The negative pressure air guide assembly comprises an exhaust pipe, a stop valve and a vacuum pump. The exhaust pipe is inserted into the side wall of the separation tower body, the stop valve is sleeved on the exhaust pipe, and the air inlet end of the vacuum pump is connected to the exhaust pipe.

[0012] The driving mechanism comprises a rotary motor and a reducer which are arranged on a moving seat.

[0013] The utility model provides a sulfolane-sulfone separation tower. It has the following beneficial effects: the sulfolane-sulfone separation tower improves the existing separation tower body, and a lifting and adjusting component is arranged on the upper part of the top cover of the separation tower body. The lifting and adjusting component is used to adjust the position of the stirring mechanism in the vertical direction, and a disturbance is generated in the vertical direction while the horizontal stirring operation is performed, thereby effectively increasing the action space of the stirring mechanism inside the separation tower body, so that the various solvents inside the separation tower body are fully mixed, and the mixed catalytic efficiency is further improved. In addition, the separation tower body adopts a jacket structure design, and the jacket structure is externally connected to an oil bath heating component to effectively ensure the stability of the heat source, thereby improving the continuity of the separation tower body in the operation of separating sulfolane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the sulfolene separation tower in the sulfolane of the utility model.

[0015] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure.

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the top view structure.

[0017] In the figure: 1. separation tower body; 2. driving mechanism; 3. stirring shaft; 4. top cover; 5. stirring blade; 6. jacket structure; 7. air pressure sensor; 8. temperature sensor; 9. temperature probe; 10. bracket; 11. screw module; 12. moving seat; 13. guide rail; 14. slider; 15. oil storage tank; 16. heating rod; 17. temperature probe; 18. oil supply pump; 19. oil filling pipe; 20. oil return pipe; 21. exhaust pipe; 22. stop valve; 23. vacuum pump. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0020] Embodiment: In conjunction with the specification Figure 1-3 It can be known that in order to solve the problems in the prior art that the stirring rod in the main body of the separation tower device adopts a fixed design, the uniformity of solvent stirring is poor, the efficiency of mixed catalysis and separation operations is affected, the energy consumption is high and the device is kept in a high temperature state for a long time, the heating wire is easy to age, and the service life of the equipment is shortened, a sulfone-butene sulfone separation tower is specifically designed, a lifting and adjusting component is arranged on the top of the separation tower main body 1, and a driving mechanism 2 is installed on the moving end of the lifting and adjusting component. The driving mechanism 2 includes a rotary motor and a reducer arranged on a moving seat 12, and the output end of the driving mechanism 2 is connected to a stirring shaft 3, and the stirring shaft 3 passes through the top cover 4 of the separation tower main body 1 and extends into the separation tower main body 1. The stirring shaft 3 and the top cover 4 are in sliding sealing cooperation, and a stirring blade 5 is mounted on the stirring shaft 3. The side wall of the separation tower main body 1 is a jacket structure 6, and the outer side of the jacket structure 6 is connected to an oil bath heating component. An air pressure sensor 7 and a temperature sensor 8 are arranged in the separation tower body 1, and a temperature probe 9 is arranged on one side of the temperature sensor 8. The probe end of the temperature probe 9 extends below the liquid surface of the sulfolane solvent. A negative pressure air guide component is connected to one side of the separation tower body 1. The existing separation tower body 1 is improved, and a lifting and adjusting component is arranged on the upper part of the top cover 4 of the separation tower body 1. The lifting and adjusting component is used to adjust the position of the stirring mechanism in the vertical direction, and a disturbance is generated in the vertical direction while the horizontal stirring operation is performed, thereby effectively increasing the action space of the stirring mechanism inside the separation tower body 1, so that the solvents inside the separation tower body 1 are fully mixed, and the mixed catalytic efficiency is further improved. In addition, the separation tower body 1 adopts a jacket structure 6 design, and the jacket structure 6 is externally connected to an oil bath heating component to effectively ensure the stability of the heat source, thereby improving the continuity of the separation tower body 1 in the sulfolane separation operation.

[0021] In the specific implementation process, the lifting and adjusting assembly includes a bracket 10, a screw module 11, a guide and a moving seat 12. The bracket 10 is arranged on the top cover 4, the screw module 11 is arranged on the bracket 10 along the vertical direction, the guide is symmetrically arranged on both sides of the screw module 11, and the moving seat 12 is arranged on the moving end of the screw module 11 and connected to the guide; the guide includes a guide rail 13 and a slider 14, the guide rail 13 is symmetrically arranged on both sides of the screw module 11, and the slider 14 is slidably mounted on the guide rail 13 and connected to the moving seat 12; when in use, start the driving mechanism 2, and use The driving mechanism 2 drives the stirring shaft 3 and the stirring blade 5 to rotate, thereby realizing the rotation and stirring of the cyclopentane solvent and the catalyst inside the separation tower body 1. During the stirring process, the screw module 11 on the bracket 10 is started, and the moving end of the screw module 11 is controlled to move in the vertical direction, thereby driving the moving seat 12 to move along the guide rail 13 under the cooperation of the sliders 14 on both sides, thereby realizing the vertical movement adjustment of the driving mechanism 2 and the stirring shaft 3, so that the stirring blade 5 reciprocates in the vertical direction while rotating horizontally, thereby forming a vortex in the mixed liquid, effectively increasing the working space of the stirring mechanism inside the separation tower body 1, so that the solvents inside the separation tower body 1 are fully mixed, and the mixed catalytic efficiency is further improved.

[0022] In the specific implementation process, the above-mentioned oil bath heating component includes an oil storage tank 15, a heating rod 16 and an oil circulation component. The oil storage tank 15 is arranged on one side of the separation tower body 1, and the heating rod 16 is inserted into the oil storage tank 15. The oil circulation component is connected to the oil storage tank 15 and the jacket structure 6 respectively. A temperature measuring probe 17 is arranged in the oil storage tank 15, wherein the oil circulation component includes an oil supply pump 18, an oil injection pipe 19 and an oil return pipe 20. The liquid inlet end of the oil supply pump 18 is connected to the oil storage tank 15, one end of the oil injection pipe 19 is connected to the lower part of the side wall of the jacket structure 6, and the other end is connected to the liquid outlet end of the oil supply pump 18, and one end of the oil return pipe 20 is connected to the jacket structure 6. The upper part of the side wall of the sleeve structure 6 is connected, and the other end is connected to the oil storage tank 15, wherein the oil storage tank 15 is filled with high-temperature resistant silicone oil. When in use, the high-temperature resistant silicone oil in the oil storage tank 15 is heated by the heating rod 16, and the oil temperature is monitored by the temperature measuring probe 17. When the oil temperature reaches the set value, the oil supply pump 18 is started, and the high-temperature oil is injected into the jacket structure 6 through the oil supply pipe by the oil supply pump 18, and the high-temperature oil is heat-exchanged with the inner wall of the separation tower body 1, thereby realizing the heating effect on the mixed solvent, and the low-temperature oil after heat exchange is further refluxed to the oil storage tank 15 through the return oil pipe 20, thereby realizing the recycling of the oil.

[0023] In the specific implementation process, the above-mentioned negative pressure air guide component includes an exhaust pipe 21, a stop valve 22 and a vacuum pump 23. The exhaust pipe 21 is inserted into the side wall of the separation tower body 1, and the stop valve 22 is mounted on the exhaust pipe 21. The air inlet end of the vacuum pump 23 is connected to the exhaust pipe 21. When in use, the air pressure sensor 7 monitors the internal air pressure of the separation tower body 1. According to the monitoring data, the vacuum pump 23 and the stop valve 22 are controlled to operate, so as to extract the internal gas of the separation tower body 1, so that the separation tower body 1 is kept in a negative pressure state, and the vaporized cyclobutane sulfone can be quickly discharged, thereby improving the overall operation efficiency of the equipment.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfolane-sulfone separation tower, comprising a separation tower body, characterized in that: A lifting and adjusting component is arranged on the top of the separation tower body, a driving mechanism is installed on the movable end of the lifting and adjusting component, an output end of the driving mechanism is connected with a stirring shaft, the stirring shaft passes through the top cover of the separation tower body and extends into the separation tower body, a sliding seal is fitted between the stirring shaft and the top cover, a stirring blade is mounted on the stirring shaft, a side wall of the separation tower body is a jacket structure, an oil bath heating component is connected to the outside of the jacket structure, an air pressure sensor and a temperature sensor are arranged in the separation tower body, a temperature probe is arranged on one side of the temperature sensor, a probe end of the temperature probe extends below the liquid surface of the sulfolane solvent, and a negative pressure air guide component is connected to one side of the separation tower body.

2. The sulfolane-sulfolane separation tower according to claim 1, characterized in that: The lifting and adjusting assembly includes a bracket, a screw module, a guide and a moving seat. The bracket is arranged on the top cover, the screw module is arranged on the bracket along the vertical direction, the guide is symmetrically arranged on both sides of the screw module, and the moving seat is arranged on the moving end of the screw module and connected to the guide.

3. The sulfolane-sulfolane separation tower according to claim 2, characterized in that: The guide member comprises a guide rail and a slider. The guide rail is symmetrically arranged on both sides of the lead screw module. The slider is slidably sleeved on the guide rail and connected to the moving seat.

4. The sulfolane-sulfolane separation tower according to claim 1, characterized in that: The oil bath heating assembly includes an oil storage tank, a heating rod and an oil circulation component. The oil storage tank is arranged on one side of the separation tower body, the heating rod is inserted into the oil storage tank, the oil circulation component is respectively connected to the oil storage tank and the jacket structure, and a temperature measuring probe is arranged in the oil storage tank.

5. The sulfolane-sulfolane separation tower according to claim 4, characterized in that: The oil circulation component includes an oil supply pump, an oil filling pipe and an oil return pipe. The liquid inlet end of the oil supply pump is connected to the oil storage tank, one end of the oil filling pipe is connected to the lower part of the side wall of the jacket structure, and the other end is connected to the liquid outlet end of the oil supply pump, and one end of the oil return pipe is connected to the upper part of the side wall of the jacket structure, and the other end is connected to the oil storage tank.

6. The sulfolane-sulfolane separation tower according to claim 4, characterized in that: The oil storage tank is filled with high temperature resistant silicone oil.

7. The sulfolane-sulfolane separation tower according to claim 1, characterized in that: The negative pressure air guide assembly includes an exhaust pipe, a stop valve and a vacuum pump. The exhaust pipe is inserted into the side wall of the separation tower body, the stop valve is sleeved on the exhaust pipe, and the air inlet end of the vacuum pump is connected to the exhaust pipe.

8. The sulfolane-sulfolane separation tower according to claim 2, characterized in that: The driving mechanism comprises a rotary motor and a reducer which are arranged on a moving seat.

Images