Jacketed reaction kettle

Abstract

The utility model discloses a jacketed reaction kettle which comprises a kettle body and a jacket arranged outside the kettle body, the top of the kettle body is provided with a feed port and a compressed air inlet, the bottom of the kettle body is provided with a discharge port, the side part of the jacket is provided with a steam inlet, and the bottom of the jacket is provided with a condensate water outlet. The jacket comprises a heat preservation outer layer and a heating inner layer, the heating inner layer is of a spiral heating pipe structure, one end of a heating pipe is connected with the steam inlet, the other end of the heating pipe is connected with a steam outlet, the steam outlet is communicated with the heat preservation outer layer, and the condensate water outlet is formed in the bottom of the heat preservation outer layer. Adjacent heating pipes of the heating inner layer are in lap joint, the heat exchange area of the reaction kettle is increased, impingement plates are arranged on the heating pipes close to a steam inlet, and bent arc transition is adopted at the joints. The jacketed reaction kettle can effectively reduce the heat loss, improve the heat transfer efficiency and ensure the temperature control precision in the reaction process, so that the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a jacketed reaction kettle. Background Art

[0002] Jacketed reactors are widely used in chemical, pharmaceutical, food and other industries to provide space and reaction conditions for chemical reactions. Jacketed reactors are a typical static equipment, and their jackets can heat or cool the medium in the reactor to achieve better industrial effects. Jacketed reactors have the advantages of high temperature resistance, high pressure resistance, hygiene, rapid cooling or heating, etc., and their quality directly affects the quality of the products produced.

[0003] In the chemical industry, jacketed reactors can be used for high temperature and high pressure reactions, polymerization reactions, nitration reactions, etc. These reaction processes have very strict requirements on temperature control, so the jacketed reactors are required to have efficient heat transfer capabilities and good thermal insulation performance. Currently, most jacketed reactors use a single-layer jacket structure. The jacket part of the single-layer jacket structure is directly in contact with the external environment, resulting in severe heat loss, limited heat transfer effect, increased energy consumption, and affecting reaction efficiency and product quality.

[0004] In the heat transfer process of the single-layer jacket structure, the temperature difference between the heating or cooling medium in the jacket and the reactants in the kettle is large, and the heat transfer efficiency is low. In addition, since the jacket is in direct contact with the external environment, heat is easily lost. Especially during the heating operation, the heat on the outer surface of the jacket is lost to the surrounding environment through convection and radiation, which increases energy consumption. On the contrary, during the cooling operation, the outer surface of the jacket easily absorbs heat from the external environment, affecting the cooling effect. These problems not only increase energy consumption, but also affect the temperature control accuracy of the reaction process, thereby affecting the quality of the product.

[0005] Therefore, there is an urgent need for a jacketed reactor that can effectively reduce heat loss. Utility Model Content

[0006] The utility model aims to provide a jacketed reactor, which can effectively reduce heat loss, improve heat transfer efficiency, and ensure the temperature control accuracy of the reaction process, thereby improving production efficiency and product quality.

[0007] The technical solution adopted by the utility model to solve the above-mentioned problem is: a jacketed reactor, comprising a reactor body and a jacket arranged outside the reactor body, the top of the reactor body is provided with a feeding port and a compressed air inlet, the bottom of the reactor body is provided with a discharge port, the side of the jacket is provided with a steam inlet, the bottom of the jacket is provided with a condensate outlet, the jacket comprises a heat-insulating outer layer and a heating inner layer, the heating inner layer adopts a spiral heating tube structure, one end of the heating tube is connected to the steam inlet, and the other end is connected to the steam outlet, the steam outlet is communicated with the heat-insulating outer layer, and the condensate outlet is arranged at the bottom of the heat-insulating outer layer.

[0008] Preferably, adjacent heating tubes of the heating inner layer are overlapped with each other.

[0009] Preferably, a bumper plate is provided near the steam inlet of the heating tube, and a curved arc transition is adopted at the connection between the heating tube and the steam inlet.

[0010] Preferably: a pressure relief valve is provided on the top of the thermal insulation outer layer.

[0011] Preferably: the kettle body is provided with a stirring device, the stirring device adopts a turbine stirrer, which includes a central shaft, and the central shaft is connected and fixed with a plurality of turbines, the central shaft is driven to rotate by a driving motor, and the driving motor is fixed to the top of the kettle body.

[0012] Preferably: a thermometer interface and a pressure gauge interface are provided on the top of the kettle body.

[0013] Preferably: a hand hole is provided on the top of the kettle body.

[0014] Preferably, the outer wall of the jacket is provided with four ear seats at equal intervals in the circumferential direction.

[0015] Compared with the prior art, the utility model has the following advantages and effects:

[0016] The spiral arched tube structure design of the heating inner layer of the utility model allows the steam to flow evenly in the jacket, and the heat transfer effect is better. The application of the insulation outer layer further reduces heat loss and ensures the heating efficiency of the reactor. The setting of the condensate outlet ensures that the condensate in the jacket can be discharged in time to prevent the accumulation of condensate and affect the heat transfer effect. The design of the feed port, compressed air inlet and discharge port of the kettle body facilitates operation and the addition, mixing and discharge of materials, and improves the overall operating efficiency and safety of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a jacketed reactor according to an embodiment of the utility model.

[0018] Figure 2 It is a front view of a jacketed reactor according to an embodiment of the utility model.

[0019] Figure 3 It is a top view of the jacketed reactor according to an embodiment of the utility model.

[0020] Figure 4 yes Figure 2 AA section view of the jacketed reactor.

[0021] Figure 5 yes Figure 3 Partial cross-sectional view of the steam inlet at line BB.

[0022] Figure 6 yes Figure 3 CC partial cross-sectional view of the steam inlet.

[0023] Figure numbers: kettle body 1, feeding port 11, compressed air inlet 12, discharge port 13, thermometer interface 14, pressure gauge interface 15, hand hole 16, jacket 2, insulation outer layer 21, condensate outlet 211, pressure relief valve 212, heating inner layer 22, heating pipe 221, steam inlet 222, steam outlet 223, anti-collision plate 224, ear seat 23, stirring device 3, central shaft 31, turbine 32, drive motor 33. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0025] Embodiment 1:

[0026] See also Figure 1 - Figure 6 In the present embodiment, a jacketed reactor 2 is provided, which is specifically used for high-temperature and high-pressure reactions and polymerization reactions in chemical, pharmaceutical, food and other industries, and specifically comprises: a reactor body 1 and a jacket 2 arranged outside the reactor body 1, wherein the top of the reactor body 1 is provided with a feeding port 11 and a compressed air inlet 12, the bottom of the reactor body 1 is provided with a discharge port 13, the side of the jacket 2 is provided with a steam inlet 222, the bottom of the jacket 2 is provided with a condensate outlet 211, the jacket 2 comprises an insulating outer layer 21 and a heating inner layer 22, the heating inner layer 22 adopts a spiral heating tube 221 structure, one end of the heating tube 221 is connected to the steam inlet 222, and the other end is connected to the steam outlet 223, the steam outlet 223 is communicated with the insulating outer layer 21, and the condensate outlet 211 is arranged at the bottom of the insulating outer layer 21.

[0027] Specifically, in this embodiment, a feed port 11 and a compressed air inlet 12 are provided on the top of the kettle body 1. The feed port 11 is used to add reaction materials into the kettle body 1, and compressed air is injected into the compressed air inlet 12 to provide a high-pressure environment for the material reaction. Steam is injected into the steam inlet 222 to provide a temperature environment for the material reaction. In this embodiment, high-temperature steam is introduced as an example (low-temperature fluids such as liquid nitrogen can also be injected to cool the kettle body 1). A discharge port 13 is provided at the bottom of the kettle body 1 for discharging materials after the reaction is completed. One end of the heating pipe 221 is connected to the steam inlet 222. Steam enters the heating pipe 221 through the steam inlet 222 and is transported downward along its spiral. At the same time, heat conduction is carried out with the surface of the kettle body 1. The steam after heat conduction is finally discharged from the steam outlet 223. The steam outlet 223 is connected to the insulation outer layer 21, so that the steam is located in the cavity between the insulation outer layer 21 and the heating inner layer 22. The steam temperature after heat conduction is still much higher than room temperature. The tube wall of the heating tube 221 is in contact with the steam after heat conduction, which reduces the heat loss in the heating tube 221 compared with direct contact with the outside air. The condensed water formed after the steam temperature in the cavity is lowered is finally discharged through the condensed water outlet 211 to prevent the accumulation of condensed water from affecting the insulation effect.

[0028] The jacket 2 reactor provided in this embodiment can effectively reduce heat loss and improve heat transfer efficiency during high temperature and high pressure reactions and polymerization reactions. The spiral arch tube structure design of the heating inner layer 22 allows steam to flow evenly in the jacket 2, and the heat transfer effect is better. The application of the insulating outer layer 21 further reduces heat loss and ensures the heating efficiency of the reactor. The setting of the condensed water outlet 211 ensures that the condensed water in the jacket 2 can be discharged in time to prevent the accumulation of condensed water from affecting the heat transfer effect. The design of the feed port 11, compressed air inlet 12 and discharge port 13 of the kettle body 1 facilitates operation and the addition, mixing and discharge of materials, and improves the overall operating efficiency and safety of the reactor.

[0029] The adjacent heating tubes 221 of the heating inner layer 22 overlap each other. The overlapping structure can not only increase the heat exchange area of ​​the reactor, but also generate stronger eddy currents near the tube wall, enhance the disturbance of the fluid, improve the heat transfer performance, enhance the heat exchange effect, and thus effectively improve the material reaction efficiency.

[0030] See also Figure 5 The heating tube 221 is provided with an anti-impact plate 224 near the steam inlet 222. The connection between the heating tube 221 and the steam inlet 222 adopts an arc transition, so that the steam can flow smoothly when entering the heating tube 221, avoiding impact damage to the heating tube 221 and extending the service life of the equipment.

[0031] A pressure relief valve 212 is provided on the top of the thermal insulation outer layer 21. The jacket 2 is connected to the kettle body 1 by welding. Due to stress concentration or residual stress such as incomplete penetration of the weld and discontinuity of the local weld surface, brittle fracture and fatigue fracture are caused. By providing a pressure relief valve 212 on the top of the thermal insulation outer layer 21, the excessive pressure inside the kettle body 1 can be effectively released to prevent sudden damage and safety accidents caused by excessive pressure, thereby improving the overall safety performance and reliability of the jacket 2 reactor.

[0032] The kettle body 1 is provided with a stirring device 3, and the stirring device 3 adopts a turbine 32 type stirrer, which includes a central shaft 31, and the central shaft 31 is connected and fixed with a plurality of turbines 32. The central shaft 31 is driven to rotate by a driving motor 33, and the driving motor 33 is fixed to the top of the kettle body 1. The turbine 32 type stirrer is more effective for emulsions formed by mixing liquids in different proportions. When the stirring device 3 is working, the turbine 32 rotates at a high speed, and the material in the kettle body 1 is sucked in the center. The high-speed rotating turbine 32 produces a centrifugal effect, so that the material is spread in all directions. Since the stirring device 3 is placed in the kettle body 1, the diameter of the turbine 32 is smaller than the diameter of the kettle body 1. The diameter of the turbine 32 in this embodiment is about one-third of the diameter of the reactor, which is convenient for installation and repair.

[0033] A thermometer interface 14 and a pressure gauge interface 15 are provided on the top of the kettle body 1. By connecting the thermometer and the pressure gauge at the above interfaces, the temperature and pressure of the reaction in the kettle can be monitored in real time to ensure that the material reaction process is carried out within a safe range, prevent safety accidents caused by abnormal temperature or pressure, and ensure operation safety.

[0034] The top of the kettle body 1 is provided with a hand hole 16. The hand hole 16 and the manhole (not shown in the figure) are for the convenience of observing the material and inspecting the kettle body 1. When the diameter of the kettle body 1 is greater than 900mm, a manhole is required. The size of the manhole should take into account the diameter of the agitator and the convenience of people entering and exiting. The diameter of the hand hole 16 is generally 150-250mm, which is convenient for operators to enter and exit after wearing gloves.

[0035] The outer wall of the jacket 2 is evenly and evenly provided with four ear seats 23 at equal intervals in the circumferential direction. The ear seats 23 are welded from thick steel plates, and can securely fix the reactor on the support, avoiding the shaking and tilting of the reactor body 1 during operation, thereby ensuring the stability and safety of the reactor; the weight of the reactor can be evenly distributed on the supporting structure, and transmitted to the ground through the supporting structure, reducing the weight and stress borne by the reactor, thereby increasing the service life of the reactor; and the vibration and stress generated by the reactor can be buffered, avoiding the occurrence of dangerous situations such as damage and breakage of the reactor due to excessive vibration and stress.

[0036] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A jacketed reactor, comprising a reactor body and a jacket arranged outside the reactor body, wherein the top of the reactor body is provided with a feeding port and a compressed air inlet, the bottom of the reactor body is provided with a discharge port, the side of the jacket is provided with a steam inlet, and the bottom of the jacket is provided with a condensed water outlet, characterized in that: The jacket includes an insulating outer layer and a heating inner layer. The heating inner layer adopts a spiral heating tube structure. One end of the heating tube is connected to the steam inlet, and the other end is connected to the steam outlet. The steam outlet is communicated with the insulating outer layer, and the condensed water outlet is arranged at the bottom of the insulating outer layer.

2. A jacketed reactor according to claim 1, characterized in that: Adjacent heating tubes in the heating inner layer are overlapped with each other.

3. A jacketed reactor according to claim 2, characterized in that: The heating tube is provided with an anti-collision plate near the steam inlet, and the connection between the heating tube and the steam inlet adopts an arc transition.

4. A jacketed reactor according to claim 3, characterized in that: A pressure relief valve is arranged on the top of the thermal insulation outer layer.

5. A jacketed reactor according to claim 1, characterized in that: The kettle body is provided with a stirring device, which adopts a turbine stirrer, comprising a central shaft, to which a plurality of turbines are connected and fixed, and the central shaft is driven to rotate by a driving motor, and the driving motor is fixed on the top of the kettle body.

6. A jacketed reactor according to claim 1, characterized in that: The top of the kettle body is provided with a thermometer interface and a pressure gauge interface.

7. A jacketed reactor according to claim 1, characterized in that: The top of the kettle body is provided with a hand hole.

8. The jacketed reactor according to claim 1, characterized in that: The outer wall of the jacket is evenly and evenly provided with four ear seats at equidistant intervals in the circumferential direction.

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