Drying equipment for phenyl alkyl sulfonate production

Abstract

The utility model discloses drying equipment for phenyl alkyl sulfonate production, which comprises a single-cone drying machine, the single-cone drying machine is provided with a conical barrel and an upper cover, the upper cover is provided with a vacuumizing pipe communicated with the conical barrel, a filter piece is arranged in the vacuumizing pipe, and the filter piece comprises a first filter screen, a second filter screen and filter cotton. The filter cotton is limited between the first filter screen and the second filter screen; the tail end of the vacuumizing pipe is provided with a connecting flange plate so as to be connected with vacuumizing equipment. The filtering piece is arranged in the vacuumizing pipe, liquid drops of phenyl alkyl sulfonate can be prevented from entering the vacuumizing device in the drying process, the splashing preventing effect of drying is achieved, and meanwhile product pollution caused by the fact that the filtering cotton falls into the conical barrel can be avoided by means of limitation of the filtering net on the filtering cotton.

Description

Technical Field

[0001] This utility model belongs to the field of drying equipment technology, and specifically relates to a drying equipment for the production of alkyl sulfonate phenyl esters. Background Technology

[0002] Alkyl sulfonate phenyl esters are important surfactants widely used in daily chemicals, building materials, energy, and other fields. Their production process mainly involves two steps: the formation of alkyl sulfonate salts and the alkylation of phenol. The reaction products are then distilled and washed to obtain pure alkyl sulfonate phenyl esters, which are then dried and packaged for sale. Distillation removes impurities and solvents from the reaction products, typically using vacuum distillation or atmospheric distillation; washing removes inorganic salts and organic acids, usually using water; and drying removes moisture, typically using vacuum drying or nitrogen blowing.

[0003] Vacuum drying is used in the production of alkyl sulfonates due to its suitability for heat-sensitive substances, protection of material properties, and high safety. Since alkyl sulfonates are light yellow, oily, and transparent liquids, single-cone vacuum drying equipment can be used for vacuum drying. However, existing single-cone vacuum dryers may experience splashing of alkyl sulfonates during operation due to unstable air pressure or agitation of the liquid surface. This splashed alkyl sulfonates may then enter the vacuum tube and, under the suction of the vacuum equipment, enter the equipment, causing contamination. Utility Model Content

[0004] This invention provides a drying device for the production of alkyl sulfonate phenyl esters to solve at least one of the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows: a drying equipment for the production of alkyl sulfonate phenyl esters, including a single-cone dryer. The single-cone dryer has a conical cylinder and a top cover. The conical cylinder includes an inner cylinder and a jacket. Heat transfer oil is introduced into the jacket to heat the inner cylinder. The jacket also has a heat transfer oil inlet and an outlet, and the heat transfer oil circulation achieves constant temperature heating of the inner cylinder. A stirring device is connected to the top cover. The stirring rod of the stirring device extends to the bottom of the conical cylinder, thereby agitating the alkyl sulfonate phenyl esters in the entire cylinder to exchange heat with the inner cylinder, ensuring a uniform temperature inside the alkyl sulfonate phenyl esters and facilitating moisture separation. The stirring shaft can be a single spiral or a double spiral structure to improve stirring efficiency. To facilitate observation of the alkyl sulfonate phenyl esters in the tank, an observation window can be provided on the feed inlet seal of the top cover, reducing the number of openings in the top cover.

[0006] Furthermore, the upper cover has a vacuum tube communicating with the conical cylinder. The vacuum tube contains a filter element, which includes a first filter screen, a second filter screen, and filter cotton. The filter cotton is positioned between the first and second filter screens. The end of the vacuum tube has a connecting flange for connection to a vacuuming device. The filter element within the vacuum tube filters the splashed alkyl sulfonate liquid, preventing it from entering the vacuuming device through the vacuum tube. The filter element is configured with two filter screens and filter cotton working together, which restricts the position of the filter cotton, preventing it from falling into the conical cylinder and contaminating the alkyl sulfonate product.

[0007] In a preferred embodiment, a filter screen groove is formed on the connecting flange, the outer diameter of the filter screen groove being larger than the outer diameter of the vacuum tube, and the first filter screen is confined within the filter screen groove. The cooperation between the first filter screen and the connecting flange facilitates the replacement of the filter screen and filter cotton by disassembling the flange.

[0008] In a preferred embodiment, the vacuum equipment has a mating flange that mates with the connecting flange. A sealing protrusion is formed on the mating flange, and this sealing protrusion fits into the filter screen groove. The mating of the sealing protrusion and the filter screen groove further enhances the sealing effect of the connection between the connecting flange and the mating flange, avoiding the problem of insufficient vacuum within the conical cylinder due to poor sealing.

[0009] In a preferred embodiment, a sealing gasket is provided between the sealing protrusion and the first filter screen.

[0010] In a preferred embodiment, the edge of the second filter screen is formed with a plurality of outwardly extending fastening claws to fix the second filter screen to the inner wall of the vacuum tube by means of the fastening claws.

[0011] In a preferred embodiment, the inner wall of the vacuum tube has a mating portion to prevent the second filter from falling into the conical cylinder.

[0012] In a preferred embodiment, the mating portion is formed as a mating protrusion extending circumferentially along the inner wall of the vacuum tube.

[0013] In a preferred embodiment, the mating portion is formed as one or more mating grooves extending circumferentially along the inner wall of the vacuum tube, so that the end of the fastening claw extends into the mating groove.

[0014] In a preferred embodiment, the pore size of the first filter screen is smaller than that of the second filter screen.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0016] 1. In a preferred embodiment of this utility model, a filter element is installed inside the vacuum tube to filter the splashed alkyl sulfonate liquid, thereby preventing it from entering the vacuum equipment through the vacuum tube. The filter element is configured with two filter screens and filter cotton, which restricts the position of the filter cotton, preventing the filter cotton from falling into the conical cylinder and contaminating the alkyl sulfonate product. Furthermore, this filtration structure has advantages such as simple structure, fewer filter components, and low operating cost.

[0017] 2. In a preferred embodiment of this utility model, the first filter screen can be secured between the connecting flange and the mating flange through the cooperation of the filter screen groove and the sealing protrusion. When splashed alkyl sulfonate phenyl ester rises, the movement of the filter cotton can be restricted by the first filter screen, while the filter cotton absorbs the rising alkyl sulfonate phenyl ester, preventing it from directly entering the vacuum equipment. When it is necessary to replace the filter screen or filter cotton, the first filter screen, filter cotton, and second filter screen can be removed in sequence by disassembling the flange, thus completing the disassembly of the filter screen and filter cotton. During installation, the second filter screen, filter cotton, and first filter screen can be placed into the vacuum tube in sequence, and then the connecting flange and the mating flange can be tightened, increasing the convenience of replacement.

[0018] 3. As a preferred embodiment of this utility model, the cooperation between the fastening claw and the mating part can fix the second filter screen, prevent the second filter screen from falling into the conical cylinder, and enhance the reliability of its structure. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a single cone dryer according to a preferred embodiment of the present invention;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of a portion of region A in the middle;

[0022] Figure 3 This is a schematic diagram of the connection structure of the connecting flange and the mating flange according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the combined state of the connecting flange and the mating flange according to a preferred embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the second filter screen structure according to a preferred embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of a preferred embodiment of the present invention, showing a combination structure of the second filter screen and the vacuum tube.

[0026] Figure 7 This is a schematic diagram of another possible combination structure between the second filter screen and the vacuum tube in a preferred embodiment of the present invention.

[0027] Attached Figure

[0028] 1. Conical cylindrical body;

[0029] 2. Top cover;

[0030] 21. Vacuum tube; 211. Connecting flange; 212. Filter screen groove; 213. Butt flange; 214. Sealing protrusion;

[0031] 22. Filter element; 221. First filter screen; 222. Second filter screen; 223. Filter cotton; 224. Fastening claw; 225. Mating protrusion; 226. Mating groove. Detailed Implementation

[0032] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0034] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] A preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the drying equipment for the production of alkyl sulfonate phenyl esters adopts a single-cone dryer as a whole. Specifically, its structure includes a conical cylinder 1 and a top cover 2. The conical cylinder 1 adopts a double-layer design, consisting of an inner cylinder and a jacket. The alkyl sulfonate phenyl ester to be dried is introduced into the inner cylinder, while heat transfer oil is introduced into the jacket to heat the inner cylinder. The jacket has a heat transfer oil inlet and outlet, and the temperature inside the inner cylinder is maintained by the circulation of heat transfer oil to prevent the temperature from being too high or too low. A stirring device is connected to the top cover 2. The stirring rod of the stirring device extends into the bottom of the conical cylinder 1, thereby agitating the alkyl sulfonate phenyl ester inside the cylinder and exchanging heat with the inner cylinder, ensuring a uniform temperature inside the alkyl sulfonate phenyl ester and facilitating moisture separation. The stirring shaft can adopt a single spiral or a double spiral structure to improve stirring efficiency. To facilitate observation of the alkyl sulfonate phenyl ester inside the tank, an observation window can be provided on the inlet seal of the top cover 2, reducing the number of openings in the top cover 2.

[0038] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the upper cover 2 has a vacuum tube 21 connecting to the conical cylinder 1. The vacuum tube 21 contains a filter element 22, which includes a first filter screen 221, a second filter screen 222, and filter cotton 223. The filter cotton 223 is confined between the first and second filter screens 221 and 222. The pore size of the first filter screen 221 is smaller than that of the second filter screen 222. The end of the vacuum tube 21 has a connecting flange 211 for connection to a vacuuming device. The filter element 22 inside the vacuum tube 21 filters the splashed alkyl sulfonate liquid, preventing it from entering the vacuuming device through the vacuum tube 21. The filter element 22 is configured with two filter screens and filter cotton 223, which restricts the position of the filter cotton 223, preventing it from falling into the conical cylinder 1 and contaminating the alkyl sulfonate product. Furthermore, this filtration structure has advantages such as simple structure, fewer filter components, and low operating costs.

[0039] Furthermore, a filter screen groove 212 is formed on the connecting flange 211, the outer diameter of which is larger than the outer diameter of the vacuum tube 21, and the first filter screen 221 is confined within the filter screen groove 212. The vacuum equipment has a mating flange 213 that mates with the connecting flange 211, and a sealing protrusion 214 is formed on the mating flange 213, which fits into the filter screen groove 212. Specifically, refer to... Figure 4 The first filter screen 221 can be secured between the connecting flange 211 and the docking flange 213 through the cooperation of the filter screen groove 212 and the sealing protrusion 214. When splashed alkyl sulfonate phenyl ester rises, the first filter screen 221 can restrict the movement of the filter cotton 223, while the filter cotton 223 absorbs the rising alkyl sulfonate phenyl ester, preventing it from directly entering the vacuum equipment. When it is necessary to replace the filter screen or filter cotton 223, the flange can be disassembled, and the first filter screen 221, filter cotton 223, and second filter screen 222 can be removed in sequence to complete the disassembly of the filter screen and filter cotton 223. During installation, the second filter screen 222, filter cotton 223, and first filter screen 221 can be placed into the vacuum tube 21 in sequence, and then the connecting flange 211 and the docking flange 213 can be tightened, increasing the convenience of replacement.

[0040] Furthermore, the cooperation between the sealing protrusion 214 and the filter screen groove 212 can further enhance the sealing effect of the connection between the connecting flange 211 and the mating flange 213, avoiding the problem of insufficient vacuum in the conical cylinder 1 due to poor sealing effect.

[0041] Furthermore, a sealing gasket is placed between the sealing protrusion 214 and the first filter screen 221 to enhance the sealing effect.

[0042] A preferred embodiment, such as Figure 5 , Figure 6 , Figure 7 As shown, in order to enhance the reliability of the connection between the second filter screen 222 and the vacuum tube 21, a plurality of outwardly extending fastening claws 224 are formed on the edge of the second filter screen 222. The number of fastening claws 224 can be four, six or eight, and they are evenly distributed on the circumference of the second filter screen 222. During installation, the fastening claws 224 are secured to the inner wall of the vacuum tube 21 by utilizing the deformation of the fastening claws 224.

[0043] Furthermore, the inner wall of the vacuum tube 21 has a mating part to prevent the second filter screen 222 from falling into the conical cylinder 1, and the mating part can be set in different ways.

[0044] Method 1:

[0045] Reference Figure 6 The mating part is formed as a mating protrusion 225 extending circumferentially along the inner wall of the vacuum tube 21. When the second filter screen 222 has a tendency to move downward along the vacuum tube 21 under the action of gravity, or has a tendency to move upward along the vacuum tube 21 under the state of air pressure change, the mating protrusion 225 can prevent the downward movement of the fastening claw 224 like a threshold.

[0046] Method 2:

[0047] Reference Figure 7 The mating part is formed as one or the same number of mating grooves 226 extending circumferentially along the inner wall of the vacuum tube 21, so that the ends of the fastening claws 224 extend into the mating grooves 226. When the second filter screen 222 tends to move downward along the vacuum tube 21 under the action of gravity, or tends to move upward along the vacuum tube 21 under the state of air pressure change, the mating grooves 226 can prevent the fastening claws 224 from falling out of the mating grooves 226 like ravines.

[0048] The engagement of the fastening claw 224 with the mating part can fix the second filter screen 222, preventing the second filter screen 222 from falling into the conical cylinder 1 and enhancing the reliability of its structure.

[0049] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0050] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0051] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A drying apparatus for the production of alkyl sulfonates, comprising a single cone dryer, said single cone dryer having a conical cylinder (1) and a top cover (2), characterized in that, The upper cover (2) has a vacuum tube (21) communicating with the conical cylinder (1), and the vacuum tube (21) has a filter element (22) inside, the filter element (22) including a first filter screen (221), a second filter screen (222) and filter cotton (223), the filter cotton (223) being confined between the first filter screen (221) and the second filter screen (222); the end of the vacuum tube (21) has a connecting flange (211) for connecting to a vacuum pumping device.

2. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 1, characterized in that, A filter screen groove (212) is formed on the connecting flange (211), the outer diameter of the filter screen groove (212) is larger than the outer diameter of the vacuum tube (21), and the first filter screen (221) is confined within the filter screen groove (212).

3. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 2, characterized in that, The vacuum equipment has a mating flange (213) that mates with the connecting flange (211), and a sealing protrusion (214) is formed on the mating flange (213), which fits the filter screen groove (212).

4. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 3, characterized in that, A sealing gasket is provided between the sealing protrusion (214) and the first filter screen (221).

5. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 1, characterized in that, The edge of the second filter (222) is formed with a plurality of outwardly extending fastening claws (224) to fix the second filter (222) to the inner wall of the vacuum tube (21) by means of the fastening claws (224).

6. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 5, characterized in that, The inner wall of the vacuum tube (21) has a fitting part to prevent the second filter (222) from falling into the conical cylinder (1).

7. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 6, characterized in that, The mating part is formed as a mating protrusion (225) extending circumferentially along the inner wall of the vacuum tube (21).

8. The drying equipment for producing alkyl sulfonate phenyl esters according to claim 6, characterized in that, The mating part is formed as one or more mating grooves (226) extending circumferentially along the inner wall of the vacuum tube (21) so that the end of the fastening claw (224) extends into the mating groove (226).

9. The drying equipment for producing alkyl sulfonate phenyl esters according to any one of claims 1-8, characterized in that, The aperture of the first filter screen (221) is smaller than that of the second filter screen (222).

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