Automatic feeding device in phenyl alkyl sulfonate production
By using a combination of a gas phase buffer tank and an explosion-proof solenoid valve in the production of alkyl sulfonate phenyl esters, the problem of the gas phase feed rate and concentration being affected by gas source fluctuations was solved, achieving stable gas delivery and reaction stability, and improving product quality and equipment safety.
Patent Information
- Application Number
- CN202520218799.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-12
AI Technical Summary
In the production of alkyl sulfonates, the current technology is susceptible to fluctuations in the gas supply rate and concentration of the gas phase feedstock, leading to unstable reactions.
The system combines a gas phase buffer tank with an explosion-proof solenoid valve. Through the pressure control and display device inside the gas phase buffer tank, precise gas addition is achieved. Combined with automatic pressure relief and a double-layer structure design, stable gas delivery is ensured.
This ensures the stability of gas addition and the smoothness of the reaction, preventing material ejection and diffusion of volatile compounds, thus guaranteeing the purity of the reaction and the safety of the equipment.
Smart Images
Figure CN223602484U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to alkyl sulfonic acid phenyl ester production equipment technical field, concretely relates to an automatic feeding device in alkyl sulfonic acid phenyl ester production. BACKGROUND
[0002] Alkyl sulfonic acid phenyl ester is an important surface active agent, and is widely used in daily chemical, building material, energy and other fields. Its production process mainly includes two steps of generating alkyl sulfonic acid salt and phenol alkylation, and the product after reaction is obtained by distillation and washing to obtain alkyl sulfonic acid phenyl ester pure product, and then drying, packaging can be sold as product. Among them, in the process of generating alkyl sulfonic acid salt, sulfur dioxide and chlorine are introduced into C 12 ~C 18 Heavy liquid paraffin after fuming sulfuric acid dehydration treatment, sulfuryl chloride is carried out. In this process, the liquid paraffin oil is pumped into the sulfonation reaction kettle, and the sulfur dioxide and chlorine are introduced into the sulfonation reaction kettle, and the reaction is carried out under the catalysis of light for 22-24h. In this process, the gas phase raw material sulfur dioxide and chlorine are introduced into the sulfonation reaction kettle, and the hydrogen chloride gas generated in the reaction is discharged, so as to improve the reaction rate and ensure the smooth progress of the reaction.
[0003] In the process of adding gas phase raw material, the gas velocity, temperature control and gas concentration will directly affect the reaction rate. According to the different reaction processes, the gas velocity and gas concentration need to be dynamically adjusted. In the prior art, the gas velocity and gas concentration are controlled by controlling the gas valve, but this control method is easily affected by the gas source of the gas phase raw material, and when the gas source fluctuates, the gas velocity and gas concentration may also be affected. UTILITY MODEL CONTENTS
[0004] The utility model provides an automatic feeding device in alkyl sulfonic acid phenyl ester production to solve at least one of the above technical problems.
[0005] The utility model adopts the technical scheme that an automatic feeding device in alkyl sulfonic acid phenyl ester production, including sulfonation reaction kettle and the gas phase conveying pipe and liquid phase conveying pipe that communicate in the sulfonation reaction kettle, the gas phase buffer tank is connected between the gas phase conveying pipe and the sulfonation reaction kettle, the gas phase buffer tank has the gas pipe, the first explosion -proof solenoid valve is connected on the gas phase conveying pipe, the second explosion -proof solenoid valve is connected on the gas pipe.
[0006] A preferred embodiment, the gas phase buffer tank is provided with pressure display device for showing the pressure inside the gas phase buffer tank, the pressure display device is connected with alarm device.
[0007] A preferred embodiment, the gas phase buffer tank is provided with an automatic pressure relief pipe, the automatic pressure relief pipe is connected with a third explosion-proof electromagnetic valve.
[0008] A preferred embodiment, the gas phase buffer tank is connected with a sealing ring between the gas outlet pipe, the gas phase feed pipe and the automatic pressure relief pipe.
[0009] A preferred embodiment, the gas phase buffer tank is a double-layer structure with an inner layer and an outer layer, and a vacuum interlayer between the outer layer and the inner layer.
[0010] A preferred embodiment, the outer surface of the outer layer has a fireproof coating, and the inner wall of the inner layer has a corrosion-resistant coating.
[0011] A preferred embodiment, the liquid phase feed pipe and the sulfonation reactor are connected with a manual valve.
[0012] Due to the adoption of the above technical scheme, the utility model has the beneficial effects that:
[0013] As a preferred embodiment of the utility model, by setting a gas phase buffer tank between the gas phase feed pipe and the sulfonation reactor, when the pressure of the gas phase buffer tank is low, the first explosion-proof electromagnetic valve is automatically opened, the gas is added into the gas phase buffer tank, and then the gas pressure is gradually increased, so that the pressure in the gas phase buffer tank is higher than that in the sulfonation reactor, the second explosion-proof electromagnetic valve is automatically opened, and the gas is smoothly added into the reactor, which can ensure that the gas is smoothly added into the reactor, the gas phase raw material is not easily affected by the gas source, and there is no problem of material spraying and volatile organic compound diffusion.
[0014] As a preferred embodiment of the utility model, the gas phase buffer tank is provided with a pressure display device for displaying the internal pressure of the gas phase buffer tank, which can clearly record the internal pressure of the gas phase buffer tank and facilitate the staff to check at any time.
[0015] On the other hand, the display device has an alarm device, which will give a warning when the internal pressure of the gas phase buffer tank continuously rises without falling or continuously falls without rising, reminding the staff to check the equipment to prevent the influence on the production of alkyl phenyl sulfonate due to the long-term instability of the gas source.
[0016] As a preferred embodiment of the utility model, the gas phase buffer tank is connected with a sealing ring between the gas outlet pipe, the gas phase feed pipe and the automatic pressure relief pipe, which can prevent gas leakage or seepage during transportation.
[0017] As a preferred embodiment of the utility model, the gas phase buffer tank is connected with an automatic pressure relief pipe, a third explosion-proof electromagnetic valve is connected to the automatic pressure relief pipe, when the internal pressure of the gas phase buffer tank continuously rises to a certain limit, the third explosion-proof electromagnetic valve is automatically triggered, the gas in the gas phase buffer tank is transported back to the gas phase material conveying pipe, the internal pressure of the gas phase buffer tank is prevented from being too large, and the gas phase buffer tank or the pipeline is prevented from being damaged due to the excessively large pressure. On the other hand, the automatic pressure relief pipe timely discharges the excess gas, relieves the internal pressure of the gas phase buffer tank, weakens the airflow pulsation in the pipeline of the benzyl alkyl sulfonate production device, buffers the pressure fluctuation of the benzyl alkyl sulfonate production device, and ensures that the benzyl alkyl sulfonate production device runs stably, so that effective explosion prevention is achieved.
[0018] As a preferred embodiment of the utility model, the gas phase buffer tank is a double-layer structure, on the one hand, the double-layer structure can ensure that the gas phase buffer tank has a certain pressure resistance, has strong adaptability to pressure changes, is not easy to break, and can effectively prevent gas leakage. On the other hand, the tank body of the double-layer gas phase buffer tank has a two-layer structure, has a certain space in the middle, and the space is a vacuum interlayer, so that the gas pressure in the tank can be kept stable.
[0019] Further, the outer surface of the outer layer is coated with a fireproof layer paint, when an accident occurs, the existence of the fireproof layer paint can effectively prevent the influence of external combustion on the gas phase buffer tank within a certain range, and the inner wall of the inner layer can be coated with a corrosion-resistant coating, so that the corrosion of sulfur dioxide and chlorine gas on the surface of the gas phase buffer tank can be effectively prevented, the gas phase buffer tank is isolated from the two, so that the corrosion speed of the gas phase buffer tank is controlled, and the service life of the gas phase buffer tank is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0020] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model. The schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:
[0021] Figure 1 It is a schematic view of the connecting structure of the automatic feeding device according to the embodiment of the utility model;
[0022] Figure 2 It is a schematic view of the structure of the gas phase buffer tank;
[0023] Figure 3 It is a schematic view of the structure of the gas phase buffer tank according to the embodiment of the utility model Figure 1 It is a schematic view of the structure of the gas phase buffer tank according to the embodiment of the utility model
[0024] REFERENCE NUMERALS
[0025] 1, sulfonation reactor;
[0026] 2, liquid phase material conveying pipe;
[0027] 3. Gas phase conveying pipe;
[0028] 4. Gas phase buffer tank; 401. outer layer; 402. inner layer; 403. vacuum interlayer;
[0029] 5. Gas outlet pipe;
[0030] 6. First explosion-proof electromagnetic valve;
[0031] 7. Second explosion-proof electromagnetic valve;
[0032] 8. Sealing ring;
[0033] 9. Manual valve;
[0034] 10. Pressure display device; 101. alarm device;
[0035] 11. Automatic pressure relief pipe;
[0036] 12. Third explosion-proof electromagnetic valve; DETAILED DESCRIPTION
[0037] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.
[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.
[0039] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0040] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0041] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "an embodiment", "exemplary" or "specific example" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0042] Example 1
[0043] As Figure 1As shown, an automatic feeding device in the production of alkyl phenyl sulfonate includes a sulfonation reactor 1 and a gas phase feeding pipe 3 and a liquid phase feeding pipe 2 connected to the sulfonation reactor 1. In the process, liquid paraffin oil and gaseous sulfur dioxide and chlorine are respectively transmitted to the sulfuration reactor 1 through the liquid phase feeding pipe 2 and the gas phase feeding pipe 3. Valves are arranged on the two feeding pipes as needed to control the material transmission state and prevent backflow of the material. In the design, a gas phase buffer tank 4 is arranged between the gas phase feeding pipe 3 and the sulfonation reactor 1 to temporarily buffer the sulfur dioxide and chlorine. A first explosion-proof electromagnetic valve 6 is arranged on the gas phase feeding pipe 3. In the energized state of the first explosion-proof electromagnetic valve 6, the electromagnetic force opens the pilot hole, the pressure in the upper chamber rapidly drops, and a pressure difference of low-high-low is formed around the closing member. The pressure of the gas phase buffer tank 4 is lower than the pressure in the gas phase feeding pipe 3, the gas pressure pushes the closing member to move upward, and the valve is opened. The first explosion-proof electromagnetic valve 6 controls the addition of a certain concentration of gas from the gas phase feeding pipe 3 to the gas phase buffer tank 4 for temporary storage. Then, as the gas pressure in the gas phase buffer tank 4 gradually rises to a certain degree, the second explosion-proof electromagnetic valve 7 connected between the gas phase buffer tank 4 and the sulfonation reactor 1 is in the energized state. The electromagnetic force opens the pilot hole, the pressure in the upper chamber rapidly drops, and a pressure difference of low-high-low is formed around the closing member. The gas pressure pushes the closing member to move upward, and the valve is opened. The second explosion-proof electromagnetic valve 7 controls the smooth addition of a certain concentration of gas from the gas phase buffer tank 4 to the sulfonation reactor 1 at a corresponding speed. Because too fast gas transmission speed or too high gas concentration can easily lead to uncontrolled reaction, and too slow gas transmission speed or too low gas concentration can affect the reaction rate, the first explosion-proof electromagnetic valve 6 and the second explosion-proof electromagnetic valve 7 are used to control the opening and closing of the gas through the electromagnetic principle to realize the accurate control of the gas (including the control of the flow, direction, flow rate and pressure of the fluid), thereby adjusting the gas transmission speed and gas concentration. Because the gas is added through the first explosion-proof electromagnetic valve 6 to the gas phase buffer tank 4 first and then added to the sulfonation reactor 1 through the second explosion-proof electromagnetic valve 2, the gas transmission speed and gas concentration do not change easily during synthesis, which ultimately ensures the purity of the reaction and makes the synthesis of alkyl phenyl sulfonate more stable and of higher quality.
[0044] Example 2
[0045] As Figure 2As shown, an automatic feeding device for the production of alkyl sulfonate phenyl esters differs from that in Example 1. The gas phase buffer tank 4 is equipped with a pressure display device 10 for displaying the internal pressure of the gas phase buffer tank 4. Specifically, the pressure display device 10 can be a pressure gauge. When the gas phase conveying pipe 3 automatically adds gas to the gas phase buffer tank 4 through the first explosion-proof solenoid valve 6, the pressure gauge pointer changes accordingly. As the gas pressure inside the gas phase buffer tank 4 gradually increases to a certain level, the gas in the gas phase buffer tank 4 is smoothly added to the sulfonation reactor 1 through the automatically opened second explosion-proof solenoid valve 7. During this period, the pressure gauge can clearly display the internal pressure of the gas phase buffer tank 4, facilitating monitoring by personnel. When the internal pressure of the gas phase buffer tank 4 remains stable at a certain level for a long period, the automatic opening of the first explosion-proof solenoid valve 6 and the second explosion-proof solenoid valve 7 can coexist, ensuring that the pressure gauge pointer remains stable at a certain value during this period.
[0046] Furthermore, an alarm device 101 is connected to the pressure display device 10, which can be an audible and visual alarm. When neither the second explosion-proof solenoid valve 7 nor the third explosion-proof solenoid valve 12 is open, and the pressure inside the gas phase buffer tank 4 continues to rise, the pressure gauge will activate the audible and visual alarm, which will issue a warning to remind personnel to check the equipment to prevent losses caused by the continuous increase in pressure inside the gas phase buffer tank 4.
[0047] Example 3
[0048] like Figure 1 As shown, an automatic feeding device for the production of alkyl sulfonate phenyl esters differs from that in Example 1. The gas phase buffer tank 4 is connected to an automatic pressure relief pipe 11, which has a third explosion-proof solenoid valve 12. Specifically, when the internal pressure of the gas phase buffer tank 4 is lower than a set value, the third explosion-proof solenoid valve 12 remains closed. When the internal pressure of the gas phase buffer tank 4 continues to rise to a certain level, and the second explosion-proof solenoid valve 7 fails to open properly, the internal pressure of the gas phase buffer tank 4 is not released, and the internal pressure continues to rise to a certain limit, exceeding the preset pressure. When the set threshold is reached, the third explosion-proof solenoid valve 12 will quickly and automatically open, allowing the gas inside the gas phase buffer tank 4 to escape briefly, thereby releasing excessive pressure inside the gas phase buffer tank 4 until the pressure drops to an acceptable level, ensuring that the gas pressure in the device and pipelines is always kept within a safe range. Subsequently, based on the pressure, the third explosion-proof solenoid valve 12 will automatically de-energize, and the spring force will close the pilot orifice. The inlet pressure will quickly create a pressure differential around the valve closing element through the bypass orifice, with a lower pressure at the bottom and a higher pressure at the top. The fluid pressure will push the closing element downward, closing the valve and resealing it, stopping the gas flow. This design ensures that the gas phase buffer tank 4 is always in a safe and controllable state, effectively preventing damage that may be caused by excessive pressure, thereby maintaining the overall safety of the device.
[0049] Example 4
[0050] As Figure 3 shown, an automatic feeding device in alkyl sulfonate phenyl production, different from example 1, the gas phase buffer tank 4 is a double-layer structure, the double-layer structure is more than a layer of protection in quantity than the single-layer structure, and the pressure resistance is stronger than the single-layer, and it is not easy to break and can effectively prevent gas leakage.
[0051] The double-layer gas phase buffer tank 4 has a certain space between the two layers of the tank body, and the space is a vacuum interlayer 403, which can ensure that the gas pressure in the tank is not easily affected in low-pressure environments such as high altitudes, so that the gas phase buffer tank 4 can adapt to more environments.
[0052] The outer surface of the outer layer 401 is coated with a fireproof coating, which can limit the influence of external combustion on the gas phase buffer tank 4 within a certain range when external combustion or explosion occurs due to accidents, and can avoid gas explosion in the gas phase buffer tank 4 and reduce the loss caused by accidents. The inner wall of the inner layer 402 is coated with a corrosion-resistant coating. Chlorine and sulfur dioxide are both acidic and have a corrosive effect on the surface of metal materials. The corrosion-resistant coating can effectively isolate sulfur dioxide and chlorine from directly contacting the inner wall surface of the inner layer of the gas phase buffer tank 4 to control the corrosion rate of the gas phase buffer tank 4 and prolong the service life of the gas phase buffer tank 4.
[0053] The parts not described in the utility model can be realized by using or referring to the existing technology.
[0054] Each embodiment in the specification adopts a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.
[0055] The above only describes the embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the claim range of the utility model.
Claims
1. An automatic feeding device in the production of alkyl phenyl sulfonate, comprising a sulfonation reactor (1) and a gas phase feeding pipe (3) and a liquid phase feeding pipe (2) connected to the sulfonation reactor (1), characterized in that, The gas phase buffer tank (4) is connected between the gas phase conveying pipe (3) and the sulfonation reaction kettle (1), and has a gas outlet pipe (5).
2. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 1, characterized in that, The gas phase buffer tank (4) is provided with a pressure display device (10) for displaying the internal pressure of the gas phase buffer tank (4), and the pressure display device (10) is connected with an alarm device (101).
3. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 1, characterized in that, The gas phase buffer tank (4) is provided with an automatic pressure relief pipe (11), and the automatic pressure relief pipe (11) is connected with a third explosion-proof electromagnetic valve (12).
4. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 3, characterized in that, The gas phase buffer tank (4) is connected between the gas outlet pipe (5), the gas phase conveying pipe (3) and the automatic pressure relief pipe (11) through a sealing ring (8).
5. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 1, characterized in that, The gas phase buffer tank (4) has a double-layer structure with an inner layer (402) and an outer layer (401), and a vacuum interlayer (403) is arranged between the outer layer (401) and the inner layer (402).
6. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 5, characterized in that, The outer surface of the outer layer (401) is provided with a fireproof coating, and the inner wall of the inner layer (402) is provided with a corrosion-resistant coating.
7. The automatic charging device in the production of alkyl phenyl sulfonate according to claim 1, characterized in that, The liquid phase conveying pipe (2) is connected between the liquid phase conveying pipe (2) and the sulfonation reaction kettle (1) through a manual valve (9).