Reaction kettle heating device

Abstract

The utility model relates to a reaction kettle heating device which comprises a reaction kettle, the reaction kettle comprises a kettle body and a jacket, a heating coil is arranged in the jacket, the jacket is communicated with a heat conduction oil conveying pipe and a first heat conduction oil return pipe, and a first heat conduction oil storage tank is arranged on the heat conduction oil conveying pipe and the first heat conduction oil return pipe. A booster pump, a heat exchanger, an electric heater and a heat conduction oil filtering device are arranged on the heat conduction oil conveying pipe, a first high-pressure steam conveying pipe and a high-pressure steam output pipe are arranged on the heating coil, a first gas-liquid separation tank is arranged on the high-pressure steam output pipe and communicated with the heat exchanger, and a second gas-liquid separation tank is communicated with the heat exchanger. Silk screen coalescers are respectively arranged in the first gas-liquid separation tank and the second gas-liquid separation tank. The heat-conducting oil can be heated by utilizing energy carried by water vapor, so that electric energy consumed by heating the heat-conducting oil is reduced, and the heat-conducting oil heating device has a wide market prospect.

Description

Technical Field

[0001] The utility model relates to the field of reactor heating equipment, in particular to a reactor heating device. Background Art

[0002] Phthalic anhydride is also called phthalic anhydride. Phthalic anhydride, like acid, has all the reaction properties of carboxylic acid and some reaction properties of benzene ring. Phthalic anhydride has the following chemical properties: When heated, phthalic anhydride and alcohol will produce monoesters, diesters and mixed esters. Phthalic anhydride can react with propylene glycol to obtain alkyd resin, maleic anhydride, ethylene glycol and unsaturated resin. In fuming sulfuric acid, tetrahalides composed of phthalic anhydride and halogen react with ferric chloride to obtain chloride. Phthalic anhydride is sulfonated with fuming sulfuric acid at 210°C to obtain derivatives of phthalic anhydride sulfonic acid. Among them, the industrial method of producing plasticizers is based on the core property that phthalic anhydride and alcohol will produce monoesters, diesters and mixed esters when heated.

[0003] Since the reaction process of producing esters from phthalic anhydride and alcohol needs to be carried out in a heated environment. The preferred equipment for providing this working environment in the existing process is the reactor. The commonly used heating methods for the reactor include electric heating, supplying heat transfer oil for heating, and supplying water vapor for heating. Among them, in large chemical production enterprises, supplying heat transfer oil for heating and supplying water vapor for heating are mainly used for production cost considerations. The principle of supplying heat transfer oil for heating is to supply the heated heat transfer oil to the jacket of the reactor, and to heat the reactor body by using the heat released by the temperature drop of the heat transfer oil. Supplying water vapor for heating is to heat the reactor body by using the heat released by the temperature drop of water vapor and the phase change heat released when the water vapor is liquefied. The liquefaction temperature of water vapor under normal pressure is 100°C, and increasing the pressure of water vapor supply can increase the liquefaction temperature of water vapor. However, there are also problems. After the water vapor is over-pressurized, it will bring additional pressure burden to the pipeline, thereby causing danger. Therefore, in the prior art, the water vapor will be pressurized to a preset range according to the pressure resistance of the pipeline. However, the use of high-pressure steam for heating uses the heat released by the temperature drop of the steam and the phase change heat released when the steam is liquefied to heat the reactor body during the heating process. The phase change heat released when the steam is liquefied is very huge. Therefore, there is also a method of heating the reactor with dual heat sources in the prior art, that is, using pressurized steam to heat the reactor body in the low temperature range; and using heat transfer oil to heat the reactor body in the high temperature range. The dual heat sources heat the reactor body, and the steam heating the reactor body in the low temperature range reduces the transportation pressure of the steam, which relatively solves the extra burden on the corresponding steam transportation pipeline caused by excessive steam pressure, and reduces possible safety risks. However, there is room for improvement; that is, after the pressurized water vapor heats the reactor body, the water vapor will not be completely converted into liquid, that is, the water vapor discharged from the reactor jacket still has a certain amount of heat, and the heat transfer oil heats the reactor within a high temperature range. During the heating process, the circulating heat transfer oil needs to be continuously delivered to the reactor jacket to maintain the heating state of the reactor. The circulating heat transfer oil needs to be heated again to ensure that the heat transfer oil delivered to the reactor jacket is maintained within a preset temperature range. Therefore, there is corresponding room for improvement in the prior art to fully utilize the heat released by the water vapor that provides thermal energy to the low temperature state of the reactor to preheat the heat transfer oil, thereby reducing the electrical energy consumed by heating the heat transfer oil to the preset temperature, thereby reducing the operating costs of the enterprise and correspondingly improving the market competitiveness of the enterprise. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a reactor heating device which can utilize the energy carried by water vapor to heat the heat transfer oil, thereby reducing the electric energy consumed in heating the heat transfer oil to a preset state, so as to overcome the defects in the prior art.

[0005] The technical solution adopted by the utility model is: a reactor heating device, comprising a reactor, the reactor comprising a reactor body and a jacket arranged outside the reactor body, a heating coil is arranged in the jacket, the reactor body and the heating coil are attached to each other, the jacket is connected with an outlet end of a heat transfer oil delivery pipe and an inlet end of a first heat transfer oil return pipe, a first heat transfer oil storage tank is arranged on the inlet end of the heat transfer oil delivery pipe and the outlet end of the first heat transfer oil return pipe, and the heat transfer oil delivery pipe is arranged along a path close to the first heat transfer oil storage tank to a path far away from the first heat transfer oil storage tank. A booster pump, a cold source channel of a heat exchanger, an electric heater and a heat transfer oil filter are arranged in sequence in the direction of the heat transfer oil storage tank. A first high-pressure steam delivery pipe and a high-pressure steam output pipe are arranged on the heating coil. The high-pressure steam output pipe is provided with an inlet end of a first gas-liquid separation tank. The gas phase outlet end of the first gas-liquid separation tank is connected to the inlet end of the cold source channel of the heat exchanger. The outlet end of the cold source channel of the heat exchanger is connected to a second gas-liquid separation tank. Wire mesh coalescers are respectively arranged in the first gas-liquid separation tank and the second gas-liquid separation tank.

[0006] Preferably, the thermal oil filtering device comprises a thermal oil filtering tube, which is provided with a first stop valve, a filter, a one-way valve and a second stop valve in sequence along the direction from close to the electric heater to away from the electric heater. The number of the thermal oil filtering devices is two, and the two thermal oil filtering devices are connected in parallel.

[0007] Preferably, it also includes a heat transfer oil drain main pipe, the heat transfer oil filter pipe between the first stop valve and the filter in each of the heat transfer oil filter devices and the heat transfer oil drain main pipe are respectively connected through a heat transfer oil drain branch pipe, the heat transfer oil filter pipe between the two filters and the one-way valves are connected through a second heat transfer oil return pipe, each heat transfer oil drain branch pipe is correspondingly provided with a third stop valve, and the second heat transfer oil return pipe is provided with a first regulating valve.

[0008] Preferably, the thermal oil filtering device further comprises a first pressure sensor disposed on the thermal oil filtering tube between the first shut-off valve and the filter and a second pressure sensor disposed on the thermal oil filtering tube between the one-way valve and the second shut-off valve.

[0009] Preferably, the first heat transfer oil storage tank, the first gas-liquid separation tank and the second gas-liquid separation tank are each provided with a first liquid level sensor.

[0010] Preferably, a first temperature sensor is provided on the heat transfer oil delivery pipe between the heat exchanger and the electric heater, a second temperature sensor is provided on the heat transfer oil delivery pipe between the heat transfer oil filter device and the electric heater, a second high-pressure steam delivery pipe is provided between the first gas-liquid separation tank and the heat exchanger, and a third regulating valve is provided on the second high-pressure steam delivery pipe.

[0011] Preferably, the first thermal oil storage tank is connected to the outlet end of a thermal oil replenishing pipe, the inlet end of the thermal oil replenishing pipe is connected to the second thermal oil storage tank, the second thermal oil storage tank is located above the first thermal oil storage tank, a second regulating valve is arranged on the thermal oil replenishing pipe, the second thermal oil storage tank and the first thermal oil storage tank are respectively provided with ventilation valves, and the second thermal oil storage tank is provided with a second liquid level sensor.

[0012] The utility model has the following beneficial effects: first, in the first stage of heating the reactor, the utility model simultaneously delivers high-pressure steam and unheated heat-conducting oil to the reactor, the high-pressure steam completes heating of the reactor body and the unheated heat-conducting oil, and then the high-pressure steam is delivered to the cold source channel of the heat exchanger after the first gas-liquid separation through the first gas-liquid separation tank, and then continuously delivered to the medium of the heat source channel of the heat exchanger for heat exchange, thereby completing the heating of the liquid flow forming the heat-conducting oil circulation, and at the same time, the liquid formed by the phase change heat released by the high-pressure steam to the outside is recovered by the first gas-liquid separation tank and the second gas-liquid separation tank for use. After completing the first stage of heating the reactor, the heat-conducting oil that has been heated in the first stage of heating the reactor is heated again by the electric heater, thereby reducing the power consumption required for heating the liquid flow of the heat-conducting oil circulation in the second stage of heating the reactor, thereby reducing the operating costs of the enterprise, and it is worth promoting.

[0013] Secondly, the utility model provides an online turbidity sensor on the heat transfer oil sewage main pipe, and installing the online turbidity sensor facilitates feedback of the content of particulate matter carried in the medium transported through the heat transfer oil sewage main pipe.

[0014] Finally, a second liquid level sensor is provided on the second thermal oil storage tank of the utility model, and the installation of the second liquid level sensor facilitates the feedback of liquid level parameters.

[0015] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved working efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of detail A.

[0018] Figure 3 for Figure 1 A partial enlarged schematic diagram of detail B.

[0019] Figure 4 for Figure 1 A partial enlarged schematic diagram of detail C. DETAILED DESCRIPTION

[0020] like Figures 1 to 4 As shown, a reactor heating device comprises a reactor 1, wherein the reactor 1 comprises a reactor body and a jacket arranged outside the reactor body, a heating coil 2 is arranged in the jacket, the reactor body and the heating coil 2 are attached to each other, the jacket is connected with an outlet end of a heat transfer oil delivery pipe 3 and an inlet end of a first heat transfer oil return pipe 4, a first heat transfer oil storage tank 5 is arranged on the inlet end of the heat transfer oil delivery pipe 3 and the outlet end of the first heat transfer oil return pipe 4, the heat transfer oil delivery pipe 3 is provided with a booster pump 6, a cold source channel of a heat exchanger 7, an electric heater 8 and a heat transfer oil filter device in sequence along the direction from close to the first heat transfer oil storage tank 5 to far away from the first heat transfer oil storage tank 5, the heat transfer oil filter device comprises a heat transfer oil filter pipe 15, and the heat transfer oil filter pipe 15 is provided with a first stop valve 16, a filter 17, a one-way valve 18 and a second stop valve 19 in sequence along the direction from close to the electric heater 8 to far away from the electric heater 8, the number of the heat transfer oil filter devices is two, and the two heat transfer oil filter devices are connected in parallel with each other. The heating coil 2 is provided with a first high-pressure steam delivery pipe 9 and a high-pressure steam output pipe 10, the high-pressure steam output pipe 10 is provided with an inlet end of a first gas-liquid separation tank 11, the gas phase outlet end of the first gas-liquid separation tank 11 is connected to the inlet end of the cold source channel of the heat exchanger 7, the outlet end of the cold source channel of the heat exchanger 7 is connected to a second gas-liquid separation tank 12, the first gas-liquid separation tank 11 and the second gas-liquid separation tank 12 are respectively provided with a wire mesh coalescer 13, a second high-pressure steam delivery pipe 14 is provided between the first gas-liquid separation tank 11 and the heat exchanger 7, and a third regulating valve 36 is provided on the second high-pressure steam delivery pipe 14. The first gas-liquid separation tank 11 and the second gas-liquid separation tank 12 each include a tank body, a gas phase outlet end provided on the tank body, a liquid phase outlet end provided on the tank body, and an inlet end provided on the tank body, the liquid phase outlet end provided on the tank body is located at the bottom end of the tank body, the gas phase outlet end provided on the tank body is located at the top end of the tank body, the inlet end provided on the tank body is located between the bottom end of the tank body and the top end of the tank body, and the wire mesh agglomerator 13 is located between the inlet end provided on the tank body and the liquid phase outlet end provided on the tank body.

[0021] Furthermore, a first temperature sensor 28 is provided on the heat transfer oil delivery pipe 3 between the heat exchanger 7 and the electric heater 8 , and a second temperature sensor 29 is provided on the heat transfer oil delivery pipe 3 between the heat transfer oil filter device and the electric heater 8 .

[0022] Installing the first temperature sensor 28 and the second temperature sensor 29 facilitates feedback of temperature parameters before and after passing through the electric heater 8 .

[0023] During the continuous heating process, the heat transfer oil is overheated locally and solidifies. The solidified heat transfer oil is transported together with the heated heat transfer oil to form mechanical impurities in the heated heat transfer oil. The heat transfer oil carrying mechanical impurities can be removed by the filter 17 in this solution. However, when the amount of filtered impurities in the filter 17 reaches a certain level, the flow resistance provided by the filter 17 is too high, which is not conducive to the passage of the heated heat transfer oil. It is necessary to switch the heat transfer oil filtering device to achieve the technical purpose of continuously filtering the heated heat transfer oil. The filter 17 with too high flow resistance needs to be cleaned before it can be put into use again. Therefore, this product also includes a heat transfer oil drain main pipe 20, on which an online turbidity sensor 35 is provided.

[0024] The heat transfer oil filter pipe 15 between the first stop valve 16 and the filter 17 in each of the heat transfer oil filter devices and the heat transfer oil drainage main pipe 20 are respectively connected through the heat transfer oil drainage branch pipe 21, and the heat transfer oil filter pipe 15 between the two filters 17 and the one-way valve 18 is connected through the second heat transfer oil return pipe 22. A third stop valve 23 is correspondingly arranged on each heat transfer oil drainage branch pipe 21, and a first regulating valve 24 is arranged on the second heat transfer oil return pipe 22. Thus, the filtered heat transfer oil is used as a backwash medium to backwash the filter 17 that needs to be cleaned, and the mechanical impurities carried by the filter 17 are flushed out of the filter 17 by the backwash medium to reduce the mechanical impurities carried by the filter 17. In addition, the heat transfer oil filter device of this product also includes a first pressure sensor 25 arranged on the heat transfer oil filter pipe 15 between the first stop valve 16 and the filter 17, and a second pressure sensor 26 is respectively arranged on the heat transfer oil filter pipe 15 between the one-way valve 18 and the second stop valve 19. The parameters fed back by the first pressure sensor 25 and the second pressure sensor 26 are used to comprehensively evaluate the flow resistance of the filter 17 in use, thereby determining whether the filter 17 needs to be cleaned.

[0025] The first thermal oil storage tank 5 is connected to the outlet end of the thermal oil replenishing pipe 30, and the inlet end of the thermal oil replenishing pipe 30 is connected to the second thermal oil storage tank 31. The second thermal oil storage tank 31 is located above the first thermal oil storage tank 5. The thermal oil replenishing pipe 30 is provided with a second regulating valve 32. The second thermal oil storage tank 31 and the first thermal oil storage tank 5 are respectively provided with a gas exchange valve 33, and the second thermal oil storage tank 31 is provided with a second liquid level sensor 34. The first thermal oil storage tank 5, the first gas-liquid separation tank 11, and the second gas-liquid separation tank 12 are respectively provided with a first liquid level sensor 27. The first liquid level sensor 27 and the second liquid level sensor 34 are installed to facilitate the feedback of liquid level parameters.

[0026] The usage of this product is as follows: Figures 1 to 4 As shown, the following steps are included:

[0027] S1. In the first stage of heating the reactor 1, the first high-pressure steam delivery pipe 9 receives the high-pressure steam provided by the steam filter and delivers it to the heating coil 2 to heat the reactor body and the jacket outside the heating coil 2, and then delivers it to the first gas-liquid separation tank 11 for the first gas-liquid separation, and then delivers it to the heat source channel of the heat exchanger 7 and the medium continuously delivered by the cold source channel of the heat exchanger 7 for heat exchange, and then delivers it to the second gas-liquid separation tank 12 for the second gas-liquid separation and then empties; at the same time, the booster pump 6 is turned on, and the heat transfer oil stored in the first heat transfer oil storage tank 5 is delivered. After being pressurized by the booster pump 6, the heat transfer oil delivery pipe 3 continuously delivers the medium to the heat source channel of the heat exchanger 7 through the cold source channel of the heat exchanger 7 for heat exchange, and then delivers it to the heat transfer oil filtering device in use, and finally delivers it to the jacket outside the heating coil 2 and the medium continuously delivered in the heating coil 2 for heat exchange, and then is returned to the first heat transfer oil storage tank 5 through the first heat transfer oil return pipe 4 to form a heat transfer oil circulating liquid flow. When the reactor 1 reaches the first heating temperature and maintains the first heating temperature for a preset time, the first stage of heating of the reactor 1 ends.

[0028] S2. After the reactor 1 completes the first stage of heating, the second stage of heating the reactor 1 can be carried out. At this time, the first high-pressure steam delivery pipe 9 stops continuing to receive the high-pressure steam provided by the upstream, turns on the electric heater 8, and adjusts the output power of the electric heater 8 according to the temperature parameter fed back by the first temperature sensor 28. The heat-conducting oil heated by the electric heater 8 is fed back to the heat-conducting oil filtering device in use after the temperature parameter is fed back by the second temperature sensor 29, and then is fed to the jacket outside the heating coil 2 to heat the kettle body, and finally is sent back to the first heat-conducting oil storage tank 5 through the first heat-conducting oil reflux pipe 4 to keep the heat-conducting oil circulating. When the reactor 1 reaches the second heating temperature and maintains the second heating temperature for a preset time, the second stage of heating the reactor 1 ends.

[0029] In step S1 and step S2, one of the two thermal oil filter devices is in use, and the other is in standby. If the difference between the pressure parameter fed back by the first pressure sensor 25 and the pressure parameter fed back by the second pressure sensor 26 in the thermal oil filter device in use reaches a preset range, the state of the thermal oil filter device in use and the thermal oil filter device in standby should be switched. After the switching is completed, the thermal oil filter device originally in use is transformed into the thermal oil filter device in the state to be cleaned, and the thermal oil filter device originally in the standby state is transformed into the thermal oil filter device originally in use. The thermal oil filter device in the state to be cleaned needs to be cleaned to meet the standby state again. The specific cleaning process is as follows:

[0030] Open the first regulating valve 24 and the third stop valve 23 on the corresponding heat transfer oil drain branch pipe 21 of the heat transfer oil filter device in the to-be-cleaned state. The heat transfer oil filtered by the corresponding filter 17 in the heat transfer oil filter device in use is transported to the filter 17 in the heat transfer oil filter device in the to-be-cleaned state through the second heat transfer oil return pipe 22. The filtered heat transfer oil is reversely flushed into the filter 17 in the to-be-cleaned state to form a backwash liquid flow. The backwash liquid flow carries the impurities adsorbed by the filter 17 and is transported to the heat transfer oil drain main pipe 20 through the corresponding heat transfer oil drain branch pipe 21 for discharge. During this period, the amount of impurities carried by the backwash liquid flow is fed back through the online turbidity sensor 35. When the difference between the parameter fed back by the online turbidity sensor 35 and the pressure parameter fed back by the first pressure sensor 25 and the pressure parameter fed back by the second pressure sensor 26 in the thermal oil filter device in the state to be cleaned is within the appropriate range, the first regulating valve 24 and the corresponding third stop valve 23 are closed. At this time, the thermal oil filter device originally in the state to be cleaned is converted back into a thermal oil filter device in the standby state.

[0031] In both step S1 and step S2, the thermal oil circulation process is present. In the thermal oil circulation, the first liquid level sensor 27 installed on the first gas-liquid separation tank 11 should be located within the corresponding preset liquid level height parameter range. If the first liquid level sensor 27 installed on the first gas-liquid separation tank 11 is lower than the corresponding preset liquid level height parameter range, the second regulating valve 32 should be opened in time to replenish the first gas-liquid separation tank 11 with the second thermal oil storage tank 31 in time, and the liquid level in the first gas-liquid separation tank 11 should be adjusted to within the corresponding preset liquid level height parameter range.

[0032] Through this embodiment, in the first stage of heating the reactor 1, high-pressure steam and unheated heat transfer oil are simultaneously delivered to the reactor 1, and the high-pressure steam completes heating of the reactor body and the unheated heat transfer oil, and then the high-pressure steam is delivered to the cold source channel of the heat exchanger 7 after the first gas-liquid separation through the first gas-liquid separation tank 11, and continuously delivered to the medium of the heat source channel of the heat exchanger 7 for heat exchange, completing the heating of the liquid flow forming the heat transfer oil circulation, and at the same time, the liquid formed by the phase change heat released by the high-pressure steam to the outside is recovered by the first gas-liquid separation tank 11 and the second gas-liquid separation tank 12 for use. After completing the first stage of heating the reactor 1, the heat transfer oil that has been heated in the first stage of heating the reactor 1 is heated again by the electric heater 8, thereby reducing the power consumption required for heating the liquid flow of the heat transfer oil circulation in the second stage of heating the reactor 1, thereby reducing the operating costs of the enterprise, which is worthy of promotion.

[0033] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A reactor heating device, comprising a reactor (1), wherein the reactor (1) comprises a reactor body and a jacket arranged outside the reactor body, characterized in that: The jacket is provided with a heating coil (2), the kettle body and the heating coil (2) are attached to each other, the jacket is connected with an outlet end of a heat transfer oil delivery pipe (3) and an inlet end of a first heat transfer oil return pipe (4), a first heat transfer oil storage tank (5) is provided on the inlet end of the heat transfer oil delivery pipe (3) and the outlet end of the first heat transfer oil return pipe (4), and the heat transfer oil delivery pipe (3) is provided with a booster pump (6), a cold source channel of a heat exchanger (7), an electric heater (8) in sequence in a direction from close to the first heat transfer oil storage tank (5) to far away from the first heat transfer oil storage tank (5). ) and a heat transfer oil filtering device, wherein the heating coil (2) is provided with a first high-pressure steam delivery pipe (9) and a high-pressure steam output pipe (10), the high-pressure steam output pipe (10) is provided with an inlet end of a first gas-liquid separation tank (11), the gas phase outlet end of the first gas-liquid separation tank (11) is connected to the inlet end of a cold source channel of a heat exchanger (7), the outlet end of the cold source channel of the heat exchanger (7) is connected to a second gas-liquid separation tank (12), and a wire mesh agglomerator (13) is provided in each of the first gas-liquid separation tank (11) and the second gas-liquid separation tank (12), respectively.

2. The reactor heating device according to claim 1, characterized in that: The thermal oil filter device comprises a thermal oil filter tube (15), and the thermal oil filter tube (15) is provided with a first stop valve (16), a filter (17), a one-way valve (18), and a second stop valve (19) in sequence along a direction from close to the electric heater (8) to far away from the electric heater (8). The number of the thermal oil filter devices is two, and the two thermal oil filter devices are connected in parallel.

3. The reactor heating device according to claim 2, characterized in that: The heat transfer oil filter device further comprises a heat transfer oil drainage main pipe (20), wherein the heat transfer oil filter pipe (15) between the first stop valve (16) and the filter (17) in each of the heat transfer oil filter devices and the heat transfer oil drainage main pipe (20) are respectively connected via a heat transfer oil drainage branch pipe (21), the heat transfer oil filter pipe (15) between the two filters (17) and the one-way valve (18) are connected via a second heat transfer oil return pipe (22), each heat transfer oil drainage branch pipe (21) is correspondingly provided with a third stop valve (23), and the second heat transfer oil return pipe (22) is provided with a first regulating valve (24).

4. The reactor heating device according to claim 2, characterized in that: The thermal oil filtering device further comprises a first pressure sensor (25) provided on the thermal oil filtering tube (15) between the first stop valve (16) and the filter (17), and a second pressure sensor (26) provided on the thermal oil filtering tube (15) between the one-way valve (18) and the second stop valve (19).

5. The reactor heating device according to claim 1, characterized in that: The first heat transfer oil storage tank (5), the first gas-liquid separation tank (11) and the second gas-liquid separation tank (12) are each provided with a first liquid level sensor (27).

6. The reactor heating device according to claim 1, characterized in that: A first temperature sensor (28) is provided on the heat transfer oil delivery pipe (3) between the heat exchanger (7) and the electric heater (8), a second temperature sensor (29) is provided on the heat transfer oil delivery pipe (3) between the heat transfer oil filter device and the electric heater (8), a second high-pressure steam delivery pipe (14) is provided between the first gas-liquid separation tank (11) and the heat exchanger (7), and a third regulating valve (36) is provided on the second high-pressure steam delivery pipe (14).

7. The reactor heating device according to claim 1, characterized in that: The first heat transfer oil storage tank (5) is connected to the outlet end of a heat transfer oil replenishing pipe (30), and the inlet end of the heat transfer oil replenishing pipe (30) is connected to the second heat transfer oil storage tank (31); the second heat transfer oil storage tank (31) is located above the first heat transfer oil storage tank (5); a second regulating valve (32) is provided on the heat transfer oil replenishing pipe (30); the second heat transfer oil storage tank (31) and the first heat transfer oil storage tank (5) are respectively provided with a ventilation valve (33); and the second heat transfer oil storage tank (31) is provided with a second liquid level sensor (34).

Images