Benzenesulfonyl chloride synthesis system

Abstract

This application relates to a benzenesulfonyl chloride synthesis system, comprising a reactor assembly, a first mixing and acid separation assembly, and a second mixing and acid separation assembly. The reactor assembly includes a sulfonation reactor and at least two insulated reactors. An upper inlet pipe in the sulfonation reactor is used to input the sulfonating agent and reactants, while a lower outlet pipe delivers the reacted material to the insulated reactor. The first mixing and acid separation assembly includes a first mixing pump and a first acid separation tower. Reactants from the insulated reactors are transported to the first acid separation tower via the first mixing pump. The second mixing and acid separation assembly includes a second mixing pump and a second acid separation tower. The output of the first acid separation tower is transported to the second acid separation tower via the second mixing pump. This invention achieves continuous and stable reaction, reduces operations, uses one reactor and two insulated tanks, and replaces the hydrolysis reactor with a mixing pump; the high-tower acid separation equipment allows for continuous feeding and acid separation; after acid separation, washing is performed using a mixing pump; and an intermediate tower is included to increase time and stabilize the liquid level, ensuring subsequent separation.

Description

Technical Field

[0001] This application relates to the field of chemical synthesis production lines, and more particularly to a benzenesulfonyl chloride synthesis system. Background Technology

[0002] In the current chemical production field, batch and autoclave processes dominate. Regarding sulfonation reactions, in batch reactors, materials must be added sequentially in batches, and reaction conditions rely on frequent manual adjustments, significantly extending reaction time. The reaction time for each batch can fluctuate due to slight operational differences, making precise control impossible and resulting in extremely low production efficiency. Furthermore, due to uneven mixing of materials within the reactor, heat transfer is limited, making it difficult to guarantee product quality stability. Key indicators of different batches may deviate significantly, posing numerous risks for subsequent applications.

[0003] The acid separation process uses traditional filtration methods, requiring multiple layers of filter media, making the process complex and cumbersome. During this process, material easily remains on the filter media, resulting in significant material loss. This not only increases production costs but also leads to incomplete acid separation. Residual impurities contaminate the acid, severely impacting the purity of subsequent products and reducing their market competitiveness. Utility Model Content

[0004] In view of the above, this application proposes a benzenesulfonyl chloride synthesis system, characterized in that it comprises: a reaction vessel assembly, a first mixing and acid separation assembly, and a second mixing and acid separation assembly. The reaction vessel assembly includes a sulfonation vessel and a heat-insulating vessel. An input pipe is provided at the top of the sulfonation vessel to input the sulfonating agent and reactants. An output pipe is provided at the bottom of the sulfonation vessel to output the reacted material from the sulfonation vessel to the heat-insulating vessel. There are at least two heat-insulating vessels. The first mixing and acid separation assembly includes a first mixing pump and a first acid separation tower. The reactant output pipe in the heat-insulating vessel inputs the output material to the first mixing pump, and the first mixing pump outputs the output material to the first acid separation tower. The second mixing and acid separation assembly includes a second mixing pump and a second acid separation tower. The output pipe of the first acid separation tower inputs the output material to the second mixing pump, and the second mixing pump outputs the output material to the second acid separation tower.

[0005] Preferably, a first water tank and a second water tank are provided at the front end of the first mixing pump and the second mixing pump, with the first water tank pipe leading to the first mixing pump and the second water tank pipe leading to the second mixing pump.

[0006] Preferably, the first and second acid separation towers are provided with at least one layer of floating valve trays.

[0007] Preferably, an intermediate tower is provided between the second mixing pump and the second acid separation tower. After the output of the second mixing pump enters the intermediate tower, the intermediate tower outputs the reactants to the second acid separation tower.

[0008] Preferably, the bottom output pipe of the sulfonation reactor is equipped with a first valve structure, and the bottom output pipe of the heat preservation reactor is equipped with a second valve structure.

[0009] Preferably, the thermos is equipped with a temperature monitoring device and a temperature control device.

[0010] Preferably, the impeller is made of a corrosion-resistant material.

[0011] Preferably, the first acid separation tower and the second acid separation tower each have at least one layer of sieve plate above and below the central feed inlet.

[0012] Preferably, the feed inlets of the first acid separation tower and the second acid separation tower are located at the middle height of the first acid separation tower and the second acid separation tower.

[0013] Preferably, the first valve structure is provided with a first signal control module, and the second valve structure is provided with a second signal control module.

[0014] The beneficial effects of this utility model are:

[0015] This invention separates the reaction and heat preservation processes, thereby achieving continuous and stable reactions and reducing frequent operations. It employs one reactor and two heat preservation tanks; the synthesis rate multiplied by the heat preservation time equals the volume of the sulfonation liquid, which in turn equals the volume of the heat preservation tank. A mixing pump replaces the traditional hydrolysis tank, simultaneously completing the material transfer process and making operation smoother and more stable. A high-tower type device is used as the acid separation equipment, with feeding in the middle and acid and material exiting from one end and the other end, respectively. Because the equipment is sufficiently tall and the separation structure is sufficiently long, continuous feeding and acid separation can be achieved, resulting in stable, orderly, and continuous production.

[0016] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0018] Figure 1 This diagram shows the connection relationship of the benzenesulfonyl chloride synthesis system apparatus according to an embodiment of this application;

[0019] Figure 2 A front view of the reactor apparatus according to an embodiment of this application is shown;

[0020] Figure 3 This application shows a front view of the insulated kettle apparatus according to an embodiment of the present application; Detailed Implementation

[0021] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0022] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" 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 or 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.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly indicate the presence of one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0026] This application discloses a benzenesulfonyl chloride synthesis system, the structure of which includes: a reaction vessel assembly, a first mixing and acid separation assembly, and a second mixing and acid separation assembly. The reaction vessel assembly includes a sulfonation vessel and a heat-insulating vessel. An input pipe is provided at the top of the sulfonation vessel to input the sulfonating agent and reactants. An output pipe is provided at the bottom of the sulfonation vessel to output the reacted substances from the sulfonation vessel to the heat-insulating vessel. There are at least two heat-insulating vessels. The first mixing and acid separation assembly includes a first mixing pump and a first acid separation tower. The reactant output pipe in the heat-insulating vessel inputs the output substances to the first mixing pump, and the first mixing pump outputs the output substances to the first acid separation tower. The second mixing and acid separation assembly includes a second mixing pump and a second acid separation tower. The output pipe of the first acid separation tower inputs the output substances to the second mixing pump, and the second mixing pump outputs the output substances to the second acid separation tower.

[0027] In one possible implementation, a first water tank and a second water tank are provided at the front end of the first mixing pump and the second mixing pump, with the first water tank pipe leading to the first mixing pump and the second water tank pipe leading to the second mixing pump.

[0028] In one possible implementation, the first acid separation tower and the second acid separation tower are each provided with at least one layer of floating valve trays to more efficiently and thoroughly separate the reactants in the first acid separation tower and the second acid separation tower.

[0029] In one possible implementation, an intermediate tower is provided between the second mixing pump and the second acid separation tower. After the output of the second mixing pump enters the intermediate tower, the intermediate tower outputs the reactants to the second acid separation tower. The intermediate tower is used to increase washing and dissolution time, as well as to stabilize the liquid level and maintain the smoothness of the transfer, providing gentle conditions for subsequent separation in the second acid separation tower.

[0030] In one possible implementation, the bottom output pipe of the sulfonation reactor is provided with a first valve structure, and the bottom output pipe of the heat preservation reactor is provided with a second valve structure.

[0031] In one possible implementation, the insulated reactor is equipped with a temperature monitoring device and a temperature control device. The temperature monitoring device detects the temperature inside the reactor, and if the temperature is too low, the temperature control device is activated to regulate the temperature of the reactor to meet the reaction and stabilization temperature requirements of benzenesulfonyl chloride.

[0032] In one possible implementation, the impeller is made of a nickel-based alloy. Nickel-based alloys can withstand high-speed rotation while resisting the corrosive effects of reactants, thus effectively extending the impeller's lifespan.

[0033] In one possible implementation, the first acid separation tower and the second acid separation tower each have at least one sieve plate above and below the central feed inlet to more efficiently and thoroughly separate the reactants in the first acid separation tower and the second acid separation tower.

[0034] In one possible implementation, the feed inlets of the first and second acid separation towers are located at an intermediate height between the first and second acid separation towers, so that the reactants can flow to the bottom of the first and second acid separation towers, while the acid evaporates to the bottom of the first and second acid separation towers and is discharged.

[0035] In one possible implementation, the first valve structure is provided with a first signal control module, and the second valve structure is provided with a second signal control module to control the amount of reactant added.

[0036] Figure 1 This diagram illustrates the connection relationships of a benzenesulfonyl chloride synthesis system according to an embodiment of this application. The utility model of this application is a benzenesulfonyl chloride synthesis system, the structure of which includes: a reaction vessel assembly, a first mixing and acid separation assembly, and a second mixing and acid separation assembly. The reaction vessel assembly includes a sulfonation vessel 101 and a heat-insulating vessel 102. An input pipe is provided at the top of the sulfonation vessel 101 to input sulfonating agent and reactants. An output pipe is provided at the bottom of the sulfonation vessel 101 to output the reacted substances from the sulfonation vessel 101 to the heat-insulating vessel 102. There are at least two heat-insulating vessels 102. The first mixing and acid separation assembly includes a first mixing pump 103 and a first acid separation tower 104. The reactant output pipe in the heat-insulating vessel 102 inputs the output substances to the first mixing pump 103, and the first mixing pump 103 outputs the output substances to the first acid separation tower 104. The second mixing and acid separation assembly includes a second mixing pump 105 and a second acid separation tower 106. The output pipe of the first acid separation tower 104 feeds the output into the second mixing pump 105, which then outputs the output into the second acid separation tower 106. An intermediate tower 107 is located between the second mixing pump 105 and the second acid separation tower 106. After the output from the second mixing pump 105 enters the intermediate tower 107, the intermediate tower 107 outputs the reactants into the second acid separation tower 106. The intermediate tower 107 is used to increase washing and dissolution time, as well as to stabilize the liquid level and maintain the smoothness of the transfer, providing gentle separation conditions for the subsequent second acid separation tower. A first water tank 108 and a second water tank 109 are located at the front end of the first mixing pump 103 and the second mixing pump 105, respectively. The first water tank 108 is connected to the first mixing pump 103, and the second water tank 109 is connected to the second mixing pump 105.

[0037] Figure 2This diagram shows a front view of the sulfonation reactor apparatus according to an embodiment of this application. The first shell 201 of the sulfonation reactor 101 has a cylindrical middle section and a hemispherical lower section. A first sulfonation reactor inlet pipe 202 and a second sulfonation reactor inlet pipe 203 are provided at the top of the sulfonation reactor 101. The first sulfonation reactor inlet pipe 202 inputs sulfonated substances into the sulfonation reactor 101, and the second sulfonation reactor inlet pipe 203 inputs reactants into the sulfonation reactor 101. A first power motor 204 is provided at the top of the sulfonation reactor 101. The first power motor 204 is connected to a first drive shaft 205, which drives a first impeller 206 located inside the sulfonation reactor 101 to stir the reactants inside the sulfonation reactor 101, making the reaction more complete. A first valve structure 207 is provided at the bottom outlet pipe of the sulfonation reactor 101, and a first signal control module 208 is provided in the first valve structure 207 to control the amount of reactants added.

[0038] Figure 3 This is a front view of the thermos flask apparatus according to an embodiment of this application. The second shell 301 of the thermos flask 102 has a cylindrical middle section and a hemispherical lower section. A thermos flask inlet pipe 302 is provided at the top of the thermos flask 102, through which reactants are fed into the thermos flask 102. A second power motor 303 is provided at the top of the thermos flask 102, connected to a second drive shaft 304, which drives a second impeller 305 located inside the thermos flask 102 to stir the reactants and ensure a more complete reaction. A second valve structure 306 is provided at the bottom outlet pipe of the thermos flask 102, and a second signal control module 307 is provided in the second valve structure 306 to control the amount of reactants added. A temperature monitoring device 308 and a temperature control device 309 are provided inside the thermos flask 102. Temperature monitoring device 308 detects the temperature inside the reactor. If the temperature is too low, temperature control device 309 is activated to control the temperature of the reactor to meet the reaction and stabilization temperature requirements of benzenesulfonyl chloride.

[0039] It should be noted that although the above-described insulation structure of the thermostatic reactor is illustrated using the installation of temperature monitoring device 308 and temperature control device 309 as an example, those skilled in the art will understand that this application is not limited to this. In fact, users can flexibly set the installation method of temperature monitoring device 308 and temperature control device 309 according to their personal preferences and / or actual application scenarios, as long as the temperature can be accurately detected in real time and the reactant temperature can be effectively controlled when needed.

[0040] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A benzenesulfonyl chloride synthesis system, characterized in that, include: Reactor assembly, first mixing and acid separation assembly, second mixing and acid separation assembly; The reaction vessel assembly includes a sulfonation vessel and a heat-preserving vessel. An input pipe is provided at the top of the sulfonation vessel to input sulfonating agent and reactants into the sulfonation vessel. An output pipe is provided at the bottom of the sulfonation vessel to output the reacted substances in the sulfonation vessel to the heat-preserving vessel. The number of heat-preserving vessels is at least two. The first mixing and acid separation assembly is equipped with a first mixing pump and a first acid separation tower. The reactant output pipe in the insulated kettle inputs the output to the first mixing pump, and the first mixing pump outputs the output to the first acid separation tower. The second mixing and acid separation assembly is equipped with a second mixing pump and a second acid separation tower. The output pipe of the first acid separation tower feeds the output material into the second mixing pump, and the second mixing pump outputs the output material into the second acid separation tower.

2. The benzenesulfonyl chloride synthesis system according to claim 1, characterized in that, The first mixing pump and the second mixing pump are provided with a first water tank and a second water tank at their front ends. The pipe of the first water tank leads to the first mixing pump, and the pipe of the second water tank leads to the second mixing pump.

3. The benzenesulfonyl chloride synthesis system according to claim 1, characterized in that, The first acid separation tower and the second acid separation tower are equipped with at least one layer of floating valve trays.

4. The benzenesulfonyl chloride synthesis system according to claim 1, characterized in that, An intermediate tower is provided between the second mixing pump and the second acid separation tower. After the output of the second mixing pump enters the intermediate tower, the intermediate tower outputs the reactants to the second acid separation tower.

5. The benzenesulfonyl chloride synthesis system according to claim 1, characterized in that, The bottom output pipe of the sulfonation reactor is equipped with a first valve structure, and the bottom output pipe of the heat preservation reactor is equipped with a second valve structure.

6. The benzenesulfonyl chloride synthesis system according to claim 2, characterized in that, The thermos is equipped with a temperature monitoring device and a temperature control device.

7. The benzenesulfonyl chloride synthesis system according to claim 2, characterized in that, It also includes an impeller, which is made of a corrosion-resistant material.

8. The benzenesulfonyl chloride synthesis system according to claim 3 or 4, characterized in that, The first acid separation tower and the second acid separation tower each have at least one layer of sieve plate above and below the central feed inlet.

9. The benzenesulfonyl chloride synthesis system according to claim 1, characterized in that, The feed inlets of the first acid separation tower and the second acid separation tower are located at the middle height of the first acid separation tower and the second acid separation tower.

10. The benzenesulfonyl chloride synthesis system according to claim 5, characterized in that, The first valve structure is provided with a first signal control module, and the second valve structure is provided with a second signal control module.

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