Sulfolane refining device

Abstract

The utility model discloses a sulfolane refining device which comprises a vacuum degassing tower, an activated carbon filter, a processing bracket, a transfer box, a transfer structure and a stirring and feeding structure, and relates to the technical field of sulfolane production, the activated carbon filter can effectively remove organic matters, peculiar smell, colors and some chemical substances in liquid; the working principle is based on the adsorption capacity of activated carbon and the highly porous surface area, and a large number of attachment points are provided for impurities, so that the high efficiency of filtration is ensured; through automatic conveying devices such as a transfer structure, a transfer box and a stirring L-shaped drainage tube, accurate control and continuous flowing of liquid are achieved, and complexity and errors of manual operation are reduced; a stirring system consisting of a stirring driver, a stirring driving disc, a stirring magnet, a stirring conduction metal rod and the like can realize high-speed rotary stirring of raw material liquid, so that uniform mixing is ensured, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfolane production, in particular to a sulfolane refining device. Background Art

[0002] As an important aromatic extraction solvent, the industrial production process of sulfolane involves the reaction of butadiene and sulfur dioxide in the presence of an inhibitor to generate sulfolane, which is then saturated by hydrogenation to obtain sulfolane. This hydrogenated saturated product is usually called a crude sulfolane product. Commercial sulfolane is obtained by adding water and organic amines and other additives to the crude sulfolane product. The quality of commercial sulfolane mainly depends on the sulfur dioxide content and pH value in the crude sulfolane product, among which the sulfur dioxide content is a key indicator for characterizing the thermal stability of sulfolane, expressed as the number of milligrams of SO2 in every 250 ml of sulfolane. The higher the value, the worse the stability. Although efforts are made to remove residual sulfur dioxide as much as possible and ensure sufficient hydrogenation depth in the production of sulfolane so that sulfolane is fully saturated into sulfolane, it is difficult to take both into account at the same time in the actual process.

[0003] The sulfur dioxide in the crude sulfolane product mainly comes from the residual sulfur dioxide in the sulfolane synthesis reaction and the sulfur dioxide released by the decomposition of unsaturated sulfolane, which leads to a low pH value of the crude sulfolane product, usually in the range of 3-5. In addition, in the commercial sulfolane, when water and oxygen are present, these sulfur dioxides will generate sulfate SO4 2 - and sulfite SO3 2 -, these ions will accelerate the deterioration of sulfolane during use, causing the pH value of sulfolane in the aromatics extraction system to continue to decrease, thereby causing corrosion of the aromatics extraction equipment. Therefore, reducing the sulfur dioxide content in the crude sulfolane product and increasing the pH value are the keys to stabilizing the quality of commercial sulfolane.

[0004] For a long time, the method of adding organic alkanolamines (such as monoethanolamine) has been widely used at home and abroad to suppress the decrease in pH value of sulfolane during use, but the effect is not ideal. For example, when the pH value of the aromatics extraction system drops below 4.5, even if the amount of monoethanolamine added daily is increased, the pH value of the system cannot be restored to normal. In addition, the existing vacuum mixing process requires a long period of static reaction, and the gas feeding position is single, resulting in a slow reaction rate. In view of this, in-depth research on the above problems led to the creation of this case. Utility Model Content

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sulfolane refining device, comprising: a vacuum degassing tower, an activated carbon filter, a processing support, a transfer box, a transfer structure and a stirring and feeding structure, wherein the processing support is installed on the vacuum degassing tower, the activated carbon filter is installed on the processing support, the transfer box is installed on the processing support, the transfer structure is installed on the activated carbon filter and the transfer box, and the stirring and feeding structure is installed on the vacuum degassing tower;

[0006] The stirring and feeding structure comprises: a stirring driving machine, a stirring driving disc, a stirring L-shaped drainage pipe, a stirring transmission ring, a plurality of stirring blades, a plurality of stirring conductive metal rods, a plurality of stirring magnets, a pair of feeding valves, a metal mesh sleeve, a nitrogen reaction box, a toothed inflation pipe, a plurality of trumpet-shaped limit plates and a plurality of circular spider web inflation pipes;

[0007] The stirring L-shaped drainage tube is inserted on the vacuum degassing tower, the stirring transmission ring is sleeved on the stirring L-shaped drainage tube through a bearing, a plurality of stirring blades are evenly installed on the stirring transmission ring, the stirring driving machine is installed on the top of the vacuum degassing tower, the stirring driving disc is installed on the driving end of the stirring driving machine, a plurality of stirring magnets are respectively installed on the stirring driving disc and the stirring transmission ring, a plurality of stirring conduction metal rods are evenly inserted on the vacuum degassing tower, the metal mesh sleeve is installed on the stirring transmission ring, a plurality of horn-shaped limit plates are evenly installed on the inner side of the vacuum degassing tower, a plurality of circular spider web inflation tubes are evenly inserted on the vacuum degassing tower, the toothed inflation tube is connected to a plurality of circular spider web inflation tubes, a pair of feeding valves are respectively installed on the toothed inflation tube and the stirring L-shaped drainage tube, and the nitrogen reaction box is connected to the feeding valve;

[0008] It should be noted that, in the above, the liquid is filtered through an activated carbon filter, and the filtered liquid is drained to the inner side of the transfer box through a transfer structure. The feeding valve is opened to drain the liquid inside the transfer box to the inner side of the stirring L-shaped drainage pipe, and the liquid is drained to the inner side of the vacuum degassing tower through the stirring L-shaped drainage pipe. At the same time, the stirring driving machine is operated to drive the stirring driving disc on the driving end of the stirring driving machine to rotate, and the stirring driving disc drives a plurality of stirring magnets thereon, and the magnetism is conducted through a plurality of stirring conduction metal rods. The stirring magnets on the stirring transmission ring are magnetically driven by a plurality of stirring conduction metal rods, so as to achieve high-speed rotation of the stirred falling raw material liquid, and at the same time, the liquid is atomized through a metal mesh sleeve, and at the same time, the nitrogen is drained to the outer side of a plurality of trumpet-shaped limit plates through the toothed inflation pipe on the nitrogen reaction box, and the gas is squeezed downward by air pressure through the trumpet-shaped shape, thereby driving the mixing of the liquid and the nitrogen, thereby driving the vacuum degassing.

[0009] Preferably, the transfer structure comprises: a transfer drive machine, a transfer gear box, a transfer threaded rod, a transfer threaded tube, a transfer guide plate and a set rubber ring;

[0010] The transfer threaded tube is inserted into the transfer box through a bearing, the transfer threaded rod is movably inserted into the inner side of the transfer threaded tube, the transfer gear box is sleeved on the transfer threaded tube, the driving end of the transfer driver is connected to the transfer gear box, the transfer guide plate is installed on the transfer threaded rod, and the sleeve rubber ring is sleeved on the transfer guide plate;

[0011] It should be noted that, in the above, the liquid inside the activated carbon filter is drained through the operation of the transfer drive motor, and the transfer gear box on the driving end of the transfer drive motor is operated, and the transfer threaded tube inside it is driven by the transfer gear box, and the transfer threaded rod inside it is driven by the transfer threaded tube, and the transfer threaded rod is stably lifted and lowered along the inner side of the transfer threaded tube, thereby driving the transfer drainage plate to be lifted and lowered, thereby driving the reaction adsorption and filtration of the liquid, thereby driving the quantitative negative pressure adsorption feeding.

[0012] Preferably, a circular arc air filling tube is arranged on the inner side of the vacuum degassing tower, and a plurality of the circular arc air filling tubes are respectively connected to a plurality of the circular spider web air filling tubes.

[0013] Preferably, threaded rotating blades are respectively provided on the inner sides of the plurality of circular arc inflation tubes.

[0014] Preferably, a scanning camera is provided on the vacuum degassing tower.

[0015] Preferably, the scanning camera is provided with a set of protective glass.

[0016] Beneficial Effects

[0017] The utility model provides a sulfolane refining device. It has the following beneficial effects: in the sulfolane refining device, the activated carbon filter can effectively remove organic matter, odor, color and certain chemicals in the liquid; its working principle is based on the adsorption capacity of activated carbon and the highly porous surface area, which provides a large number of attachment points for impurities, thereby ensuring the high efficiency of filtration; through the transfer structure, transfer box, stirring L-shaped drainage tube and other automated transmission devices, the precise control and continuous flow of the liquid are achieved, reducing the tediousness and errors of manual operation; the stirring system composed of the stirring drive machine, stirring drive disc, stirring magnet and stirring conductive metal rod can achieve high-speed rotation and stirring of the raw material liquid, ensure uniform mixing and improve reaction efficiency; the application of the vacuum degassing tower can achieve the purpose of degassing by reducing the pressure in the system, so that the dissolved gas in the liquid escapes, which helps to improve the quality and stability of the product; through The nitrogen reaction box and trumpet-shaped limit plate introduce nitrogen and mix it with the liquid, further enhancing the degassing effect and possibly introducing other beneficial gas reactions to improve product performance; the transfer drive motor realizes the stable lifting and lowering of the transfer drainage plate through transmission devices such as the transfer gear box, transfer threaded pipe and transfer threaded rod, ensuring the stability and accuracy of the liquid transmission process; the lifting and lowering adjustment function is not only convenient for maintenance, but also can adjust the contact time and degree of liquid and activated carbon according to actual needs, and optimize the reaction adsorption and filtration effect; the entire system reduces energy consumption and waste emissions through automated control and high-efficiency filtration, in line with the development trend of energy conservation and environmental protection; the close cooperation and efficient operation of each link have significantly improved production efficiency and product quality and reduced production costs; the system design has certain flexibility and scalability, and can be adjusted and optimized according to actual production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front cross-sectional structure of a sulfolane refining device described in the utility model.

[0019] Figure 2 A sulfolane refining device according to the utility model Figure 1 Schematic diagram of the local enlarged structure at position A.

[0020] In the figure: 1. Vacuum degassing tower; 2. Activated carbon filter; 3. Processing bracket; 4. Transfer box; 5. Stirring driver; 6. Stirring drive disc; 7. Stirring L-shaped drainage pipe; 8. Stirring transmission ring; 9. Stirring blade; 10. Stirring conduction metal rod; 11. Stirring magnet; 12. Feeding valve; 13. Metal mesh sleeve; 14. Nitrogen reaction box; 15. Toothed inflation tube; 16. Trumpet-shaped limit plate; 17. Ring spider web inflation tube. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0022] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions 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 principles and processes, and no longer explains the electrical control.

[0023] Example

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-2As shown, the processing bracket 3 is installed on the vacuum degassing tower 1, the activated carbon filter 2 is installed on the processing bracket 3, the transfer box 4 is installed on the processing bracket 3, the transfer structure is installed on the activated carbon filter 2 and the transfer box 4, and the stirring and feeding structure is installed on the vacuum degassing tower 1; the stirring and feeding structure includes: a stirring driving machine 5, a stirring driving disc 6, a stirring L-shaped drainage pipe 7, a stirring transmission ring 8, a plurality of stirring blades 9, a plurality of stirring conduction metal rods 10, a plurality of stirring magnets 11, a pair of feeding valves 12, a metal mesh sleeve 13, a nitrogen reaction box 14, a toothed inflation pipe 15, and a plurality of a trumpet-shaped limit plate 16 and a plurality of circular spider web air filling tubes 17; the stirring L-shaped drainage tube 7 is inserted on the vacuum degassing tower 1, the stirring transmission ring 8 is sleeved on the stirring L-shaped drainage tube 7 through a bearing, a plurality of stirring blades 9 are evenly installed on the stirring transmission ring, the stirring driving machine 5 is installed on the top of the vacuum degassing tower 1, the stirring driving disc 6 is installed on the driving end of the stirring driving machine 5, a plurality of stirring magnets 11 are respectively installed on the stirring driving disc 6 and the stirring transmission ring, a plurality of stirring conduction metal rods 10 are evenly inserted on the vacuum degassing tower 1, and the metal mesh The sleeve 13 is installed on the stirring transmission ring 8, a plurality of the trumpet-shaped limit plates 16 are evenly installed on the inner side of the vacuum degassing tower 1, a plurality of the circular spider web inflation tubes 17 are evenly inserted on the vacuum degassing tower 1, the toothed inflation tube 15 is connected to a plurality of the circular spider web inflation tubes 17, a pair of the feeding valves 12 are respectively installed on the toothed inflation tube 15 and the stirring L-shaped drainage tube 7, and the nitrogen reaction box 14 is connected to the feeding valve 12; the transfer structure includes: a transfer drive motor, a transfer gear box, a transfer threaded rod, a transfer threaded tube, a transfer drainage plate and a set rubber ring; the transfer threaded tube is connected to the transfer valve 12 through a bearing Inserted on the transfer box 4, the transfer threaded rod is movably inserted on the inner side of the transfer threaded tube, the transfer gear box is sleeved on the transfer threaded tube, the driving end of the transfer driver is connected to the transfer gear box, the transfer guide plate is installed on the transfer threaded rod, and the sleeved rubber ring is sleeved on the transfer guide plate; a circular arc inflation tube is arranged on the inner side of the vacuum degassing tower 1, and several of the circular arc inflation tubes are respectively connected to several of the circular spider web inflation tubes 17; threaded rotating blades are respectively arranged on the inner sides of several of the circular arc inflation tubes; a scanning camera is arranged on the vacuum degassing tower 1; a sleeved protective glass is arranged on the scanning camera.

[0025] According to the attached Figure 1-2It is concluded that the liquid is filtered through the activated carbon filter 2, and the filtered liquid is drained to the inner side of the transfer box 4 through the transfer structure, and the feeding valve 12 is opened to drain the liquid inside the transfer box 4 to the inner side of the stirring L-shaped drainage pipe 7, and the liquid is drained to the inner side of the vacuum degassing tower 1 through the stirring L-shaped drainage pipe 7, and at the same time, the stirring driving machine 5 is operated to drive the stirring driving disc 6 on the driving end of the stirring driving machine 5 to rotate, and the stirring driving disc 6 drives a plurality of stirring magnets 11 thereon, and the magnetism is conducted through a plurality of stirring conduction metal rods 10, and the stirring magnets 11 on the stirring transmission ring 8 are magnetically driven by the plurality of stirring conduction metal rods 10, so as to achieve high-speed rotation of the stirred falling raw material liquid, and at the same time, through the metal The mesh sleeve 13 atomizes the liquid, and at the same time, the nitrogen is drained to the outside of several trumpet-shaped limit plates 16 through the toothed inflation tube 15 on the nitrogen reaction box 14. Through the trumpet shape, the gas is squeezed downward by air pressure, thereby driving the liquid and nitrogen to be mixed, thereby driving the vacuum degassing; the liquid inside the activated carbon filter 2 is drained through the operation of the transfer drive machine, and the transfer gear box on the driving end of the transfer drive machine is operated, and the transfer threaded pipe inside it is driven by the transfer gear box, and the transfer threaded rod inside it is driven by the transfer threaded pipe, and the transfer threaded rod is stably lifted and lowered along the inner side of the transfer threaded pipe, thereby driving the transfer drainage plate to be lifted and lowered, thereby driving the reaction adsorption filtration liquid, thereby driving the quantitative negative pressure adsorption feeding.

[0026] 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 refining device, comprising: A vacuum degassing tower, an activated carbon filter, a processing support, a transfer box, a transfer structure and a stirring and feeding structure, characterized in that the processing support is installed on the vacuum degassing tower, the activated carbon filter is installed on the processing support, the transfer box is installed on the processing support, the transfer structure is installed on the activated carbon filter and the transfer box, and the stirring and feeding structure is installed on the vacuum degassing tower; The stirring and feeding structure comprises: a stirring driving machine, a stirring driving disc, a stirring L-shaped drainage pipe, a stirring transmission ring, a plurality of stirring blades, a plurality of stirring conductive metal rods, a plurality of stirring magnets, a pair of feeding valves, a metal mesh sleeve, a nitrogen reaction box, a toothed inflation pipe, a plurality of trumpet-shaped limit plates and a plurality of circular spider web inflation pipes; The stirring L-shaped drainage tube is inserted into the vacuum degassing tower, the stirring transmission ring is sleeved on the stirring L-shaped drainage tube through a bearing, a plurality of stirring blades are evenly installed on the stirring transmission ring, the stirring driving machine is installed on the top of the vacuum degassing tower, the stirring driving disc is installed on the driving end of the stirring driving machine, a plurality of stirring magnets are respectively installed on the stirring driving disc and the stirring transmission ring, a plurality of stirring conduction metal rods are evenly inserted into the vacuum degassing tower, the metal mesh sleeve is installed on the stirring transmission ring, a plurality of horn-shaped limit plates are evenly installed on the inner side of the vacuum degassing tower, a plurality of circular spider web inflation tubes are evenly inserted into the vacuum degassing tower, the toothed inflation tube is connected to a plurality of circular spider web inflation tubes, a pair of feeding valves are respectively installed on the toothed inflation tube and the stirring L-shaped drainage tube, and the nitrogen reaction box is connected to the feeding valve.

2. A sulfolane refining device according to claim 1, characterized in that: The transfer structure includes: a transfer drive machine, a transfer gear box, a transfer threaded rod, a transfer threaded pipe, a transfer guide plate and a set rubber ring; The transfer threaded tube is inserted into the transfer box through a bearing, the transfer threaded rod is movably inserted into the inner side of the transfer threaded tube, the transfer gear box is sleeved on the transfer threaded tube, the driving end of the transfer drive motor is connected to the transfer gear box, the transfer guide plate is installed on the transfer threaded rod, and the sleeve rubber ring is sleeved on the transfer guide plate.

3. A sulfolane refining device according to claim 2, characterized in that: A circular arc air filling pipe is arranged on the inner side of the vacuum degassing tower, and a plurality of the circular arc air filling pipes are respectively connected to a plurality of the circular spider web air filling pipes.

4. A sulfolane refining device according to claim 3, characterized in that: The inner sides of the plurality of arc inflation tubes are respectively provided with threaded rotating blades.

5. A sulfolane refining device according to claim 4, characterized in that: The vacuum degassing tower is provided with a scanning camera.

6. A sulfolane refining device according to claim 5, characterized in that: The scanning camera is provided with a set of protective glass.

Images