A glass-lined reactor with double jacket structure

Abstract

The present invention belongs to the technical field of glass-lined reactors, and discloses a glass-lined reactor with a double-jacket structure, including a glass-lined reactor and a controller, a spiral jacket is installed on the outer side of the glass-lined reactor, a cylindrical jacket is integrally formed on the outer side of the glass-lined reactor, the spiral jacket is located between the glass-lined reactor and the cylindrical jacket, both ends of the spiral jacket penetrate and extend to the outer side of the cylindrical jacket, and a first circulating liquid joint is installed. The present invention uses the mechanical stress formed by the pressure of the heat-conducting medium on the spiral jacket to offset or weaken the temperature difference stress between the spiral jacket and the glass-lined reactor, thereby reducing the influence of the temperature difference stress on the spiral jacket, ensuring the stability of the connection between the spiral jacket and the glass-lined reactor, avoiding cracking or leakage of the heat-conducting medium, and ensuring the rationality and stability of the structure while improving the temperature control effect of the glass-lined reactor.

Description

Technical Field

[0001] The invention relates to the technical field of glass-lined reactors, and more specifically to a glass-lined reactor with a double-jacket structure. Background Art

[0002] Glass-lined reactor is a composite material made by lining the inner surface of a steel container with high silicon dioxide glass, which is firmly attached to the metal surface after high temperature burning. Therefore, it is an excellent corrosion-resistant equipment. The stirring reaction process of the materials inside the glass-lined reactor often needs to be carried out at a specific temperature, so most glass-lined reactors are equipped with jackets and heat exchange media are introduced into the jackets to facilitate the reaction of the materials.

[0003] However, most of the existing glass-lined reactors are equipped with a single-layer jacket, in which the spiral jacket is easily affected by the temperature difference stress during use, which may cause cracks between the spiral jacket and the glass-lined reactor, resulting in leakage of the heat transfer medium, resulting in low temperature control effect and use safety of the glass-lined reactor. The simple double-layer jacket structure cannot eliminate the influence of the temperature difference stress on the spiral jacket, resulting in the double-layer jacket structure being unable to effectively improve the heat exchange efficiency of the glass-lined reactor. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a glass-lined reactor with a double-jacket structure to overcome the above-mentioned background technical problems.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A glass-lined reactor with a double-jacket structure comprises a glass-lined reactor and a controller, wherein a spiral jacket is installed on the outer side of the glass-lined reactor, and a cylindrical jacket is integrally formed on the outer side of the glass-lined reactor, the spiral jacket is located between the glass-lined reactor and the cylindrical jacket, both ends of the spiral jacket penetrate and extend to the outer side of the cylindrical jacket, and are installed with a first circulating liquid joint, the left and right sides of the cylindrical jacket are fixedly connected with a second circulating liquid joint, and pneumatic valves are installed on the first circulating liquid joint and the second circulating liquid joint.

[0007] The glass-lined reactor, the spiral jacket and the cylindrical jacket are all equipped with temperature sensors, the spiral jacket and the cylindrical jacket are all equipped with pressure sensors, and the pneumatic valve, the temperature sensor and the pressure sensor are all electrically connected to the controller.

[0008] As a further description of the above technical solution:

[0009] The inner side of the cylindrical jacket is integrally formed with grid-shaped reinforcing ribs, the inner side of the spiral jacket is integrally formed with an arc-shaped reinforcing block, the middle part of the arc-shaped reinforcing block is hollow, and the arc-shaped reinforcing block is attached to the glass-lined reactor.

[0010] As a further description of the above technical solution:

[0011] The controller is calculated as follows:

[0012] Temperature difference stress: ;

[0013] In the formula , and They are radial, annular and axial temperature difference stresses respectively;

[0014] For the heat load: , where R is the Young's elastic modulus of the spiral jacket, is the thermal expansion of the spiral jacket, u is the Poisson's ratio of the spiral jacket, is the temperature difference between the spiral jacket and the glass-lined reactor;

[0015] k is the diameter ratio of the spiral jacket;

[0016] x is the relative position;

[0017] The mechanical stress is: ;

[0018] In the formula , and They are radial, annular and axial mechanical stresses respectively;

[0019] p is the external pressure of the spiral jacket;

[0020] The total stress of the spiral jacket can be obtained. On the premise of offsetting the temperature difference stress, the magnitude of the mechanical stress is adjusted and the value of p is changed.

[0021] As a further description of the above technical solution:

[0022] The controller controls the pneumatic valve in two ways:

[0023] Scenario 1: When the glass-lined reactor is cooled down, the internal temperature is higher than the temperature of the heat exchange medium in the cylindrical jacket and the spiral jacket. The controller controls the pneumatic valve flow rate on the second circulating liquid joint of the liquid inlet to decrease, and controls the pneumatic valve flow rate on the second circulating liquid joint of the liquid outlet to increase, thereby reducing the internal pressure of the cylindrical jacket, while the internal pressure of the spiral jacket remains unchanged or increases, making the internal pressure of the spiral jacket greater than the internal pressure of the cylindrical jacket, offsetting the stress deformation of the spiral jacket when it is cooled down;

[0024] Scenario 2: When the temperature of the glass-lined reactor rises, the internal temperature is lower than the temperature of the heat exchange medium in the cylindrical jacket and the spiral jacket. The controller controls the pneumatic valve on the second circulating liquid joint of the liquid inlet to increase the flow rate, and controls the pneumatic valve on the second circulating liquid joint of the liquid outlet to decrease the flow rate, thereby reducing the increase in the internal pressure of the cylindrical jacket, while the internal pressure of the spiral jacket remains unchanged or decreases, making the internal pressure of the spiral jacket less than the internal pressure of the cylindrical jacket, offsetting the stress deformation of the spiral jacket caused by expansion when the temperature rises.

[0025] As a further description of the above technical solution:

[0026] The controller includes a data acquisition and communication module, a comparison module, a calculation module and a PLC control module. The temperature sensor and the pressure sensor are both electrically connected to the data acquisition and communication module. The comparison module is electrically connected to the data acquisition and communication module and the calculation module. The calculation module is electrically connected to the PLC control module. The PLC control module is electrically connected to the pneumatic valve.

[0027] As a further description of the above technical solution:

[0028] A pressure relief valve is installed on the cylindrical jacket, and a heat preservation sleeve is wrapped around the outer side of the cylindrical jacket.

[0029] As a further description of the above technical solution:

[0030] The arc-shaped reinforcement block is semicircular, and one side of the arc-shaped reinforcement block that is in contact with the glass-lined reactor is a contact portion, and the other side opposite to the contact portion is an arc portion. The contact portion is tightly in contact with the outer wall of the glass-lined reactor, and the arc portion is located on the hollow inner side of the arc-shaped reinforcement block.

[0031] Compared with the prior art, the advantages of the present invention are:

[0032] (1) In this scheme, the external circulating heat exchange medium is conveniently introduced into the interior of the cylindrical jacket and the spiral jacket respectively through the first circulating liquid joint and the second circulating liquid joint, so as to heat or cool the outer surface of the glass-lined reactor. The double-layer jacket structure can improve the temperature regulation efficiency of the glass-lined reactor and increase the use effect of the glass-lined reactor.

[0033] (2) In this scheme, the flow rates of the first circulating liquid joint and the second circulating liquid joint can be controlled by the pneumatic valve, and the pressure of the heat transfer medium inside the cylindrical jacket can be adjusted, so that the mechanical stress formed by the heat transfer medium pressure on the spiral jacket can be used to offset or weaken the temperature difference stress between the spiral jacket and the glass-lined reactor, thereby reducing the influence of the temperature difference stress on the spiral jacket, ensuring the stability of the connection between the spiral jacket and the glass-lined reactor, avoiding cracking or leakage of the heat transfer medium, and ensuring the rationality and stability of the structure while improving the temperature control effect of the glass-lined reactor.

[0034] (3) In this scheme, the structure of the cylindrical jacket and the spiral jacket is strengthened by reinforcing ribs and arc-shaped reinforcing blocks to increase the structural strength and explosion-proof capability. The fitting portion is used as an arc-shaped reinforcing block close to the connecting structure supporting the glass-lined reactor, and at the same time, it will block part of the heat exchange surface of the outer surface of the glass-lined reactor, and the heat exchange work of the blocked part is transferred to the arc portion. Since the surface area of ​​the arc portion is larger than that of the fitting portion, the heat exchange loss caused by the arc-shaped reinforcing block is compensated, and the heat exchange efficiency between the inside of the spiral jacket and the glass-lined reactor is improved by expanding the heat exchange area, thereby increasing the heating or cooling rate of the material inside the glass-lined reactor and improving the use effect of the glass-lined reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a front view cross-sectional structural schematic diagram of the present invention;

[0036] Figure 2 It is a partial cross-sectional structural schematic diagram of the cylindrical jacket of the present invention;

[0037] Figure 3 It is a partial cross-sectional structural schematic diagram of the spiral jacket of the present invention;

[0038] Figure 4 It is a schematic diagram of the principle of the present invention;

[0039] Figure 5 It is a schematic diagram of the heat exchange medium flow direction of the present invention.

[0040] Description of the numbers in the figure:

[0041] 1. Glass-lined reactor; 2. Controller; 21. Data acquisition communication module; 22. Comparison module; 23. Calculation module; 24. PLC control module; 3. Cylinder jacket; 31. Reinforcement rib; 4. First circulating liquid joint; 5. Second circulating liquid joint; 6. Pneumatic valve; 7. Temperature sensor; 8. Pressure sensor; 9. Spiral jacket; 91. Arc reinforcement block; 10. Pressure relief valve; 11. Insulation sleeve. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention;

[0043] See also Figure 1-5 In the present invention, a double-jacketed glass-lined reactor comprises a glass-lined reactor 1 and a controller 2. A spiral jacket 9 is installed on the outer side of the glass-lined reactor 1. A cylindrical jacket 3 is integrally formed on the outer side of the glass-lined reactor 1. The spiral jacket 9 is located between the glass-lined reactor 1 and the cylindrical jacket 3. Both ends of the spiral jacket 9 penetrate and extend to the outer side of the cylindrical jacket 3, and a first circulating liquid joint 4 is installed. The left and right sides of the cylindrical jacket 3 are fixedly connected with a second circulating liquid joint 5. The first circulating liquid joint 4 and the second circulating liquid joint 5 are both installed with a pneumatic valve 6.

[0044] Temperature sensors 7 are installed inside the glass-lined reactor 1 , the spiral jacket 9 and the cylindrical jacket 3 , pressure sensors 8 are installed inside the spiral jacket 9 and the cylindrical jacket 3 , and the pneumatic valve 6 , the temperature sensor 7 and the pressure sensor 8 are all electrically connected to the controller 2 .

[0045] In the present invention, the first circulating liquid joint 4 and the second circulating liquid joint 5 are used to conveniently introduce the external circulating heat exchange medium into the interior of the cylindrical jacket 3 and the spiral jacket 9, respectively, so as to heat or cool the outer surface of the glass-lined reactor 1. The double-layer jacket structure can improve the temperature regulation efficiency of the glass-lined reactor 1 and increase the use effect of the glass-lined reactor 1. When the spiral jacket 9 is used, due to the high temperature difference between the interior of the spiral jacket 9 and the interior of the glass-lined reactor 1, temperature difference stress will be caused between the spiral jacket 9 and the glass-lined reactor 1, which will affect the stability of the connection between the spiral jacket 9 and the glass-lined reactor 1 and seriously cause the spiral jacket 9 to be The jacket 9 falls off and the heat exchange medium leaks, which affects the temperature control effect of the glass-lined reactor 1. The pneumatic valve 6 can control the flow rate of the first circulating liquid joint 4 and the second circulating liquid joint 5, and adjust the pressure of the heat-conducting medium inside the cylindrical jacket 3, so that the mechanical stress formed by the heat-conducting medium pressure on the spiral jacket 9 offsets or weakens the temperature difference stress between the spiral jacket 9 and the glass-lined reactor 1, thereby reducing the influence of the temperature difference stress on the spiral jacket 9, ensuring the stability of the connection between the spiral jacket 9 and the glass-lined reactor 1, avoiding cracking or leakage of the heat-conducting medium, and improving the temperature control effect of the glass-lined reactor 1 while ensuring the rationality and stability of the structure.

[0046] See also Figure 1-3 , wherein: a grid-shaped reinforcing rib 31 is integrally formed on the inner side of the cylindrical jacket 3, an arc-shaped reinforcing block 91 is integrally formed on the inner side of the spiral jacket 9, and the arc-shaped reinforcing block 91 is made of heat-conducting material, the middle part of the arc-shaped reinforcing block 91 is hollow, and the arc-shaped reinforcing block 91 is attached to the glass-lined reactor 1.

[0047] In the present invention, the structures of the cylindrical jacket 3 and the spiral jacket 9 are reinforced by the reinforcing ribs 31 and the arc-shaped reinforcing blocks 91, thereby increasing the structural strength and explosion-proof capability. At the same time, the arc-shaped reinforcing blocks 91 can increase the heat exchange area between the internal heat-conducting medium of the spiral jacket 9 and the glass-lined reactor 1, thereby increasing the heating or cooling speed of the material inside the glass-lined reactor 1 and improving the use effect of the glass-lined reactor 1. In addition, a plurality of arc-shaped reinforcing blocks 91 will segment the interior of the spiral jacket 9, thereby improving the structural stability of the spiral jacket 9 and reducing the mutual influence of the internal stress of the spiral jacket 9.

[0048] See also Figure 1 and Figure 4 , where: Controller 2 is calculated as follows:

[0049] Temperature difference stress: ;

[0050] In the formula , and They are radial, annular and axial temperature difference stresses respectively;

[0051] For the heat load: , where R is the Young's elastic modulus of the spiral jacket 9, is the thermal expansion ratio of the spiral jacket 9, u is the Poisson's ratio of the spiral jacket 9, is the temperature difference between the spiral jacket 9 and the glass-lined reactor 1;

[0052] k is the diameter ratio of the spiral jacket 9;

[0053] x is the relative position;

[0054] The mechanical stress is: ;

[0055] In the formula , and They are radial, annular and axial mechanical stresses respectively;

[0056] p is the external pressure of the spiral jacket 9;

[0057] The total stress of the spiral jacket 9 can be obtained thereby. On the premise of offsetting the temperature difference stress, the magnitude of the mechanical stress is adjusted and the value of p is changed.

[0058] In the present invention, the temperature difference stress and mechanical stress on the spiral jacket 9 are calculated by a formula, and the direction and magnitude of the mechanical stress on the spiral jacket 9 are changed by adjusting the pressure outside the spiral jacket 9, thereby offsetting or weakening the temperature difference stress on the spiral jacket 9, allowing the spiral jacket 9 and the glass-lined reactor 1 to expand and contract synchronously, thereby ensuring the stability of the connection between the two.

[0059] See also Figure 1 and Figure 4 , where: the controller 2 controls the pneumatic valve 6 in two ways:

[0060] Scenario 1: When the glass-lined reactor 1 is cooled down, the internal temperature is higher than the temperature of the heat exchange medium in the cylindrical jacket 3 and the spiral jacket 9. The controller 2 controls the pneumatic valve 6 on the second circulating liquid joint 5 of the liquid inlet to decrease the flow rate, and controls the pneumatic valve 6 on the second circulating liquid joint 5 of the liquid outlet to increase the flow rate, thereby reducing the internal pressure of the cylindrical jacket 3, while the internal pressure of the spiral jacket 9 remains unchanged or increases, so that the internal pressure of the spiral jacket 9 is greater than the internal pressure of the cylindrical jacket 3, offsetting the stress deformation of the spiral jacket 9 when it is cooled down;

[0061] Scenario 2: When the temperature of the glass-lined reactor 1 is increased, the internal temperature is lower than the temperature of the heat exchange medium in the cylindrical jacket 3 and the spiral jacket 9. The controller 2 controls the flow rate of the pneumatic valve 6 on the second circulating liquid joint 5 of the liquid inlet to increase, and controls the flow rate of the pneumatic valve 6 on the second circulating liquid joint 5 of the liquid outlet to decrease, thereby reducing the increase in the internal pressure of the cylindrical jacket 3, while the internal pressure of the spiral jacket 9 remains unchanged or decreases, so that the internal pressure of the spiral jacket 9 is less than the internal pressure of the cylindrical jacket 3, offsetting the stress deformation of the spiral jacket 9 when it is heated up.

[0062] In the present invention, when the material in the glass-lined reactor 1 needs to be heated or cooled, the temperature difference between the inside of the glass-lined reactor 1 and the inside of the spiral jacket 9 is opposite, so it is necessary to adjust the working state of the pneumatic valve 6 and change the pressure value of the heat exchange medium in the cylindrical jacket 3 to match the generation of mechanical stress in different working scenarios, so as to offset or weaken the temperature difference stress.

[0063] See also Figure 1 and Figure 4 , wherein: the controller 2 includes a data acquisition and communication module 21, a comparison module 22, a calculation module 23 and a PLC control module 24, the temperature sensor 7 and the pressure sensor 8 are both electrically connected to the data acquisition and communication module 21, the comparison module 22 is electrically connected to the data acquisition and communication module 21 and the calculation module 23, the calculation module 23 is electrically connected to the PLC control module 24, and the PLC control module 24 is electrically connected to the pneumatic valve 6.

[0064] In the present invention, the temperature data and pressure data collected by the temperature sensor 7 and the pressure sensor 8 are collected by the data acquisition and communication module 21, and the data are uploaded to the comparison module 22, and the temperature difference and pressure difference inside the glass-lined reactor 1, the cylindrical jacket 3 and the spiral jacket 9 are compared, and the comparison data, temperature data and pressure data are uploaded to the calculation module 23, and the above formula is used for calculation, so that the external pressure of the spiral jacket 9 should be P when balanced, and the PLC controls the operation of the pneumatic valve 6 according to the calculation result, adjusts the pressure value in the cylindrical jacket 3 until it is balanced, and the overall work is more intelligent.

[0065] See also Figure 1 , wherein: a pressure relief valve 10 is installed on the cylinder jacket 3, and an insulation sleeve 11 is wrapped around the outer side of the cylinder jacket 3.

[0066] In the present invention, the pressure relief valve 10 can relieve the pressure inside the cylinder jacket 3 as needed, avoiding the safety hazard caused by excessive pressure inside the cylinder jacket 3, and improving the safety of the glass-lined reactor 1. The insulation sleeve 11 insulates the cylinder jacket 3 to reduce heat loss, making it more environmentally friendly and energy-saving.

[0067] See also Figure 3 The arc-shaped reinforcement block 91 is semicircular, one side of the arc-shaped reinforcement block 91 that is in contact with the glass-lined reactor 1 is a contact portion, and the other side opposite to the contact portion is an arc portion, the contact portion is in contact with the outer wall of the glass-lined reactor 1, and the arc portion is located on the hollow inner side of the arc-shaped reinforcement block 91.

[0068] In the present invention, the fitting portion is used as an arc-shaped reinforcement block 91 to be close to the connecting structure supporting the glass-lined reactor 1, and at the same time, a portion of the heat exchange surface of the outer surface of the glass-lined reactor 1 is blocked, and the heat exchange work of the blocked portion is transferred to the arc portion. Since the surface area of ​​the arc portion is larger than that of the fitting portion, the heat exchange loss caused by the arc-shaped reinforcement block 91 is compensated, and the heat exchange efficiency between the inside of the spiral jacket 9 and the glass-lined reactor 1 is improved by expanding the heat exchange area.

[0069] Working principle: The external circulating heat exchange medium is conveniently introduced into the interior of the cylindrical jacket 3 and the spiral jacket 9 respectively through the first circulating liquid connector 4 and the second circulating liquid connector 5, so as to heat or cool the outer surface of the glass-lined reactor 1. The double-layer jacket structure can improve the temperature regulation efficiency of the glass-lined reactor 1 and increase the use effect of the glass-lined reactor 1. When the spiral jacket 9 is in use, due to the high temperature difference between its interior and the interior temperature of the glass-lined reactor 1, temperature difference stress will occur between the spiral jacket 9 and the glass-lined reactor 1, affecting the stability of the connection between the spiral jacket 9 and the glass-lined reactor 1, and in severe cases, the spiral jacket 9 will fall off, the heat exchange medium will leak, and the temperature control effect of the glass-lined reactor 1 will be affected. The temperature data and pressure data collected by the temperature sensor 7 and the pressure sensor 8 are collected through the data acquisition and communication module 21, and the data are uploaded to the comparison module 22. The temperature difference and pressure difference inside the glass-lined reactor 1, the cylindrical jacket 3 and the spiral jacket 9 are compared, and the comparison data, temperature data and pressure data are uploaded to the calculation module 23, and the above formula is used for calculation, so that the external pressure of the spiral jacket 9 should be P when it is balanced, and the PLC controls the pneumatic valve 6 to work according to the calculation result. The pneumatic valve 6 can control the flow rate of the first circulating liquid joint 4 and the second circulating liquid joint 5, and adjust the pressure of the heat-conducting medium inside the cylindrical jacket 3, so that the mechanical stress formed by the heat-conducting medium pressure on the spiral jacket 9 is used to offset or weaken the temperature difference stress between the spiral jacket 9 and the glass-lined reactor 1, thereby reducing the influence of the temperature difference stress on the spiral jacket 9, ensuring the stability of the connection between the spiral jacket 9 and the glass-lined reactor 1, avoiding cracking or leakage of the heat-conducting medium, and improving the temperature control effect of the glass-lined reactor 1 while ensuring the rationality and stability of the structure.

[0070] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-jacketed glass-lined reactor, comprising a glass-lined reactor (1) and a controller (2), characterized in that: A spiral jacket (9) is installed on the outer side of the glass-lined reactor (1), and a cylindrical jacket (3) is integrally formed on the outer side of the glass-lined reactor (1). The spiral jacket (9) is located between the glass-lined reactor (1) and the cylindrical jacket (3). Both ends of the spiral jacket (9) penetrate and extend to the outer side of the cylindrical jacket (3), and are installed with a first circulating liquid joint (4). The left and right sides of the cylindrical jacket (3) are fixedly connected with a second circulating liquid joint (5), and the first circulating liquid joint (4) and the second circulating liquid joint (5) are both installed with a pneumatic valve (6); The glass-lined reactor (1), the spiral jacket (9) and the cylindrical jacket (3) are all equipped with temperature sensors (7), the spiral jacket (9) and the cylindrical jacket (3) are all equipped with pressure sensors (8), and the pneumatic valve (6), the temperature sensor (7) and the pressure sensor (8) are all electrically connected to the controller (2); The inner side of the cylindrical jacket (3) is integrally formed with grid-shaped reinforcing ribs (31), the inner side of the spiral jacket (9) is integrally formed with evenly distributed arc-shaped reinforcing blocks (91), the middle part of the arc-shaped reinforcing blocks (91) is hollow, and the arc-shaped reinforcing blocks (91) are attached to the glass-lined reactor (1); The arc-shaped reinforcement block (91) is semicircular, one side of the arc-shaped reinforcement block (91) that is in contact with the glass-lined reactor (1) is a contact portion, and the other side opposite to the contact portion is an arc portion, and the surface area of ​​the arc portion is larger than the contact portion, the contact portion is closely attached to the outer wall of the glass-lined reactor (1), and the arc portion is located on the hollow inner side of the arc-shaped reinforcement block (91).

2. A double-jacketed glass-lined reactor according to claim 1, characterized in that: The controller (2) is calculated as follows: Temperature difference stress: In the formula , and They are radial, annular and axial temperature difference stresses respectively; For the heat load: , where E is the Young's modulus of elasticity of the spiral jacket (9), is the thermal expansion coefficient of the spiral jacket (9), u is the Poisson's ratio of the spiral jacket (9), is the temperature difference between the spiral jacket (9) and the glass-lined reactor (1); k is the diameter ratio of the spiral jacket (9); x is the relative position; The mechanical stress is: In the formula , and They are radial, annular and axial mechanical stresses respectively; p is the external pressure of the spiral jacket (9); The total stress of the spiral jacket (9) can be obtained thereby. On the premise of offsetting the temperature difference stress, the magnitude of the mechanical stress is adjusted and the value of p is changed.

3. A double-jacketed glass-lined reactor according to claim 1, characterized in that: The controller (2) controls the pneumatic valve (6) in two ways: Scenario 1: When the glass-lined reactor (1) is cooled, the internal temperature is higher than the temperature of the heat exchange medium in the cylindrical jacket (3) and the spiral jacket (9). The controller (2) controls the pneumatic valve (6) on the second circulating fluid connector (5) of the liquid inlet to reduce the flow rate, and controls the pneumatic valve (6) on the second circulating fluid connector (5) of the liquid outlet to increase the flow rate, thereby reducing the pressure inside the cylindrical jacket (3) while the internal pressure of the spiral jacket (9) remains unchanged or increases, so that the internal pressure of the spiral jacket (9) is greater than the internal pressure of the cylindrical jacket (3), thereby offsetting the stress deformation caused by the shrinkage of the spiral jacket (9) when the temperature is reduced; Scenario 2: When the temperature of the glass-lined reactor (1) is increased, the internal temperature is lower than the temperature of the heat exchange medium in the cylindrical jacket (3) and the spiral jacket (9). The controller (2) controls the pneumatic valve (6) on the second circulating liquid joint (5) for liquid inlet to increase the flow rate, and controls the pneumatic valve (6) on the second circulating liquid joint (5) for liquid outlet to decrease the flow rate, thereby increasing the pressure inside the cylindrical jacket (3) while the internal pressure of the spiral jacket (9) remains unchanged or decreases, making the internal pressure of the spiral jacket (9) lower than the internal pressure of the cylindrical jacket (3), thereby offsetting the stress deformation caused by the expansion of the spiral jacket (9) when the temperature is increased.

4. A double-jacketed glass-lined reactor according to claim 1, characterized in that: The controller (2) comprises a data acquisition communication module (21), a comparison module (22), a calculation module (23) and a PLC control module (24); the temperature sensor (7) and the pressure sensor (8) are both electrically connected to the data acquisition communication module (21); the comparison module (22) is electrically connected to the data acquisition communication module (21) and the calculation module (23); the calculation module (23) is electrically connected to the PLC control module (24); and the PLC control module (24) is electrically connected to the pneumatic valve (6).

5. The double-jacketed glass-lined reactor according to claim 1, characterized in that: A pressure relief valve (10) is installed on the cylindrical jacket (3), and a heat-insulating sleeve (11) is wrapped around the outer side of the cylindrical jacket (3).

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