Conduction oil system of polymerization reaction kettle
By introducing an oil temperature control system and an oil-gas separation system into the polymerization reactor, the problem of coil oil leakage caused by unstable pressure and temperature of heat transfer oil was solved, realizing automatic control and recycling of heat transfer oil, and improving the safety and efficiency of the system.
Patent Information
- Application Number
- CN202423188738.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing heat transfer oil system of the polymerization reactor has problems such as unstable heat transfer oil pressure and temperature, which leads to oil leakage at the coil weld. In addition, the maintenance and venting operations are cumbersome, which can easily pollute the environment. Furthermore, it cannot be automatically recycled and separated for discharge.
A heat transfer oil system including an oil temperature control system and an oil-gas separation system was designed. The temperature of the heat transfer oil is controlled by an interlocking assembly, which includes a booster pump, a cooler, a circulation pump, and a separator, to achieve automatic temperature control and recycling of the heat transfer oil. The oil-gas separation system includes a heat transfer oil storage tank and a separator to achieve automatic separation and circulation of the heat transfer oil.
Effectively control the temperature of the heat transfer oil, avoid damage to the coil, improve the circulation rate and purity of the heat transfer oil, reduce environmental pollution, and extend the service life of the reactor and coil.
Smart Images
Figure CN223570693U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of polymeric reaction kettle heat conducting oil system, and specifically relates to a polymeric reaction kettle heat conducting oil system. BACKGROUND
[0002] In the production of polyester, polyester imine and other insulating resin products, stable heating and rapid cooling play a very key role in the production of insulating resin, and are one of the product quality assurance conditions, therefore, the heat conducting oil pressure and temperature change used by the polymeric reaction kettle are required to be higher, especially the reaction kettle heat conducting oil outer coil, the heat conducting oil coil weld leakage often occurs in the production process, so it is necessary to frequently drain the oil maintenance or oil filling and exhaust work of the heat conducting oil coil, however, these operations are relatively cumbersome, and current manual operation is prone to cause the heat conducting oil to be spilled, thereby causing the working area and environment to be polluted, and the current heat conducting oil system cannot automatically use, recycle and separate and discharge the heat conducting oil, therefore, there is an urgent need to design a polymeric reaction kettle heat conducting oil system to solve the above problems. SUMMARY
[0003] The utility model discloses a polymeric reaction kettle heat conducting oil system, solve the heat conducting oil pressure and temperature control not stable and easily cause the problem of coil weld leakage, the problem of inconvenient operation of the heat conducting oil maintenance, oil filling and exhaust and the problem of automatic control of the use, recycling and separation and discharge of the heat conducting oil.
[0004] To solve the above technical problems, the utility model provides a kind of polymeric reaction kettle heat conducting oil system, including reaction kettle and oil temperature control system and oil-gas separation system respectively connected with the reaction kettle, the side wall of the reaction kettle is equipped with coil, the outside of the reaction kettle is connected with heat conducting oil feed pipe, the heat conducting oil feed pipe is communicated with the coil,
[0005] The oil temperature control system includes a booster pump, a cooler, a cold oil return pipeline and an interlocking assembly, the booster pump is arranged on the heat conducting oil feed pipe, the heat conducting oil feed pipe is respectively connected with a pressure regulating pipe and a circulating pipe, the pressure regulating pipe is connected with the oil-gas separation system, the circulating pipe is connected with the cooler, the circulating pipe is connected with a oil supplementing pipe, the oil supplementing pipe is connected with the oil-gas separation system, the circulating pipe is further provided with a circulating pump, one end of the cold oil return pipeline is connected with the cooler, and the other end is connected with the oil-gas separation system,
[0006] The reaction kettle and the heat conducting oil feed pipe, the cold oil return pipeline and the circulating pipe control the temperature of the heat conducting oil in the four through the interlocking assembly.
[0007] Further, the interlocking assembly comprises a control alarm instrument, a hot oil inlet temperature regulating valve, a hot oil inlet cut-off valve, a temperature sensor, a hot oil return cut-off valve, a cold oil return cut-off valve and a cold oil inlet cut-off valve, the control alarm instrument is connected with the bottom of the reaction kettle through a pipeline, the hot oil inlet temperature regulating valve, the hot oil inlet cut-off valve and the temperature sensor are sequentially arranged on the hot oil inlet pipeline, the hot oil inlet temperature regulating valve is electrically connected with the temperature sensor, the hot oil return cut-off valve and the cold oil return cut-off valve are arranged on the cold oil return pipeline, the outside of the reaction kettle is connected with a plurality of hot oil return pipelines in communication with the coil of the reaction kettle, the plurality of hot oil return pipelines are connected with the hot oil return cut-off valve through pipelines, the cold oil inlet cut-off valve is arranged on the circulating pipeline, and the control alarm instrument is electrically connected with the cold oil inlet cut-off valve, the hot oil return cut-off valve, the cold oil return cut-off valve and the cold oil inlet cut-off valve respectively.
[0008] Further, the oil supplementing pipeline is provided with an oil supplementing cut-off valve.
[0009] Further, the oil gas separation system comprises a hot oil storage tank and a separator, one side of the top of the hot oil storage tank is connected with the top of the separator through a liquid conveying pipeline, the other side of the top is connected with a nitrogen pipeline, the bottom is connected with the bottom of the separator through an oil return pipeline, a hot oil return main pipe is connected on the side wall of the oil return pipeline, and the pressure adjusting pipeline is connected with the side wall of the oil return pipeline.
[0010] Further, the pressure adjusting pipeline is provided with a pressure adjusting valve.
[0011] Further, the oil return pipeline is provided with a recovery pump.
[0012] Further, the liquid conveying pipeline is provided with a liquid level adjusting valve.
[0013] The polymeric reaction kettle heat conducting oil system has the advantages that the coil of the reaction kettle is effectively controlled in temperature through the oil temperature control system and the interlocking assembly, so that the problem that the coil is damaged under the condition that the heat conducting oil is unstable in temperature or pressure is solved; and the gas in the used heat conducting oil is discharged through the oil gas separation system, the oil body is returned to the coil of the reaction kettle for recycling, the heat conducting oil that cannot be continuously used after repeated use is discharged from the heat conducting oil system, and therefore the recycling rate of the heat conducting oil is effectively improved.
[0014] The interlocking assembly is arranged, and temperature data in the reaction kettle can be reacted to the control unit through the control alarm instrument, the control unit controls each valve through the reacted data, so that the temperature of the heat conducting oil out of the reaction kettle and into the reaction kettle is effectively controlled, and the service life of the reaction kettle and the coil pipe is effectively improved.
[0015] The oil-gas separation system is arranged, the heat conducting oil can be separated through the separator, the separated heat conducting oil can be re-pressurized into the coil pipe in the reaction kettle through the recovery pump, or can be transported into the separator for re-separation through the recovery pump, the repeatedly separated heat conducting oil is transported into the heat conducting oil return main pipe, so that the effects of automatic oil supplement, exhaust and discharge can be achieved, the purity of the heat conducting oil is effectively improved, and the risk of coil pipe burst caused by excessive gas after the heat conducting oil is heated is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0017] Figure 1 is a whole structure diagram of a polymerization reaction kettle heat conducting oil system in the embodiment of the present application;
[0018] In the figure: 1-reaction kettle, 2-oil temperature control system, 3-oil-gas separation system, 4-oil supplement cut-off valve, 5-pressure regulating valve, 6-recovery pump, 7-liquid level regulating valve, 11-coil pipe, 21-boosting pump, 22-cooler, 23-cool oil return pipeline, 24-interlocking assembly, 25-heat conducting oil feeding pipeline, 26-pressure regulating pipeline, 27-circulation pipeline, 28-oil supplement pipeline, 29-circulation pump, 31-heat conducting oil storage tank, 32-separator, 33-liquid conveying pipeline, 34-nitrogen pipeline, 35-oil return pipeline, 36-heat conducting oil return main pipe, 241-control alarm instrument, 242-heat oil inlet temperature regulating valve, 243-heat oil inlet cut-off valve, 244-temperature sensor, 245-heat oil return cut-off valve, 246-cool oil return cut-off valve, 247-cool oil inlet cut-off valve, 248-heat oil return pipeline. DETAILED DESCRIPTION
[0019] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings of the present application specification. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0020] The following will describe a specific embodiment of this utility model and its appendix. Figure 1 This paper details a heat transfer oil system for a polymerization reactor, comprising a reactor 1, an oil temperature control system 2, and an oil-gas separation system 3 connected to the reactor 1. A coil 11 is installed on the side wall of the reactor 1, and a heat transfer oil inlet pipe 25 is connected to the outside of the reactor 1, communicating with the coil 11.
[0021] The oil temperature control system 2 includes a booster pump 21, a cooler 22, a cold oil return pipe 23, and an interlock assembly 24. The booster pump 21 is installed on the heat transfer oil inlet pipe 25, which is connected to a pressure regulating pipe 26 and a circulation pipe 27. The pressure regulating pipe 26 is connected to the oil-gas separation system 3, and the circulation pipe 27 is connected to the cooler 22. A makeup oil pipe 28 is connected to the circulation pipe 27, and a makeup oil shut-off valve 4 is installed on the makeup oil pipe 28. The makeup oil pipe 28 is also connected to the oil-gas separation system 3. A circulation pump 29 is also installed on the circulation pipe 27. One end of the cold oil return pipe 23 is connected to the cooler 22, and the other end is connected to the oil-gas separation system 3.
[0022] The temperature of the heat transfer oil in the reactor 1, the heat transfer oil feed pipe 25, the cold oil return pipe 23, and the circulation pipe 27 is controlled by the interlocking assembly 24.
[0023] In the heat transfer oil system of the polymerization reactor, the temperature of the heat transfer oil in the coil 11 of the reactor 1 is effectively controlled by the oil temperature control system 2 and the interlock component 24 to solve the problem of the heat transfer oil damaging the coil 11 when the oil temperature or pressure is unstable; at the same time, the gas in the used heat transfer oil is discharged through the oil-gas separation system 3, and the oil is returned to the coil 11 of the reactor 1 for recycling.
[0024] The interlocking assembly 24 comprises a control alarm instrument 241, a hot oil inlet temperature regulating valve 242, a hot oil inlet cut-off valve 243, a temperature sensor 244, a hot oil return cut-off valve 245, a cold oil return cut-off valve 246 and a cold oil inlet cut-off valve 247, the control alarm instrument 241 is connected with the bottom of the reaction kettle 1 through a pipeline, the hot oil inlet temperature regulating valve 242, the hot oil inlet cut-off valve 243 and the temperature sensor 244 are sequentially arranged on the hot oil inlet pipeline 25, the hot oil inlet temperature regulating valve 242 is electrically connected with the temperature sensor 244, the hot oil return cut-off valve 245 and the cold oil return cut-off valve 246 are arranged on the cold oil return pipeline 23, the outside of the reaction kettle 1 is connected with a plurality of hot oil return pipelines 248 which are communicated with the coil 11 of the reaction kettle 1, the plurality of hot oil return pipelines 248 are connected with the hot oil return cut-off valve 245 through pipelines, the cold oil inlet cut-off valve 247 is arranged on the circulating pipeline 27, and the control alarm instrument 241 is electrically connected with the cold oil inlet cut-off valve 247, the hot oil return cut-off valve 245, the cold oil return cut-off valve 246 and the cold oil inlet cut-off valve 247 respectively.
[0025] The interlocking assembly 24 is arranged, the temperature data in the reaction kettle 1 can be fed back to the control unit through the control alarm instrument 241, the control unit controls the valves according to the reaction data, so that the temperature of the hot oil out of the reaction kettle and into the reaction kettle is effectively controlled, and the service life of the reaction kettle 1 and the coil 11 is effectively improved.
[0026] The oil-gas separation system 3 comprises a hot oil storage tank 31 and a separator 32, one side of the top of the hot oil storage tank 31 is connected with the top of the separator 32 through a liquid conveying pipeline 33, the other side of the top is connected with a nitrogen pipeline 34, the bottom is connected with the bottom of the separator 32 through a return pipeline 35, a liquid level regulating valve 7 is arranged on the liquid conveying pipeline 33, a recovery pump 6 is arranged on the return pipeline 35, a hot oil return main pipeline 36 is connected with the side wall of the return pipeline 35, a pressure regulating pipeline 26 is connected with the side wall of the return pipeline 35, and a pressure regulating valve 5 is arranged on the pressure regulating pipeline 26.
[0027] The oil-gas separation system 3 is arranged, the hot oil can be separated through the separator 32, the separated hot oil can be re-pressurized into the coil 11 of the reaction kettle 1 through the recovery pump 6, or can be conveyed into the separator 32 through the recovery pump 6 for re-separation, and the repeatedly separated hot oil is conveyed into the hot oil return main pipeline 36, so that the hot oil can achieve the effects of automatic oil supplement, exhaust and discharge, the purity of the hot oil is effectively improved, the recycling rate of the hot oil is effectively improved, and the risk of burst of the coil 11 caused by excessive gas after the hot oil is heated can be avoided.
[0028] The working process of the utility model is as follows:
[0029] When the reaction kettle 1 is in the production of heating, the hot oil inlet temperature adjusting valve 242 and the hot oil inlet cut-off valve 243 connected to the heat conducting oil inlet pipeline 25 are opened and set to automatic adjusting mode, the pressure is set to 0.4 MPa, the booster pump 21 is started to pressurize the heat conducting oil in the heat conducting oil inlet pipeline 25 connected to the coil 11, so that the pressure of the heat conducting oil is kept at 0.4 MPa, and after being pressurized, the heat conducting oil enters the coil 11 of the reaction kettle 1 through the heat conducting oil inlet pipeline 25, and after entering, the hot oil inlet cut-off valve 243 is closed, the reaction kettle 1 is in reaction work, the temperature of the heat conducting oil in the coil 11 is raised, so as to realize the stable pressure heating work of the reaction kettle 1;
[0030] When the control alarm instrument 241 at the bottom of the reaction kettle 1 detects that the temperature in the reaction kettle 1 exceeds the set temperature, an alarm is sent to the control unit, the control unit controls the heat conducting oil system to cool the heat conducting oil, the control unit controls the cold oil inlet cut-off valve 247 and the cold oil return cut-off valve 246 to open, the hot heat conducting oil in the coil 11 of the reaction kettle 1 is transported to the circulating pump 29 through the circulating pipeline 27, and the hot heat conducting oil is transported to the cooler 22 through the circulating pump 29 to cool, the cooled heat conducting oil is transported to the several hot oil return pipelines 248 on the left side of the coil 11 of the reaction kettle 1 through the cold oil return pipeline 23, and then enters the coil 11 of the reaction kettle 1, the control unit controls the cold oil inlet cut-off valve 247 and the cold oil return cut-off valve 246 to close, so as to complete the cooling of the heat conducting oil;
[0031] When the reaction kettle 1 is cooled after several times of repeating, the temperature of the control alarm instrument 241 at the bottom of the reaction kettle 1 reaches the set separation temperature, the control unit controls the cold oil inlet oil cut-off valve 247 and the cold oil return oil cut-off valve 246 to open, the heat-conducting oil in the coil 11 of the reaction kettle 1 is transported to the circulating pump 29 through the circulating pipeline 27, and is transported to the cooler 22 through the circulating pump 29 to be cooled, the cooled heat-conducting oil enters the cold oil return pipeline 23, and at this time the control unit controls the hot oil return oil cut-off valve 245 to open, the heat-conducting oil in the coil 11 of the reaction kettle 1 is transported to the cold oil return pipeline 23 from the several hot oil return pipelines 248 to be combined with the cooled heat-conducting oil to reduce the oil temperature of the heat-conducting oil, and then the cooled heat-conducting oil enters the separator 32 to be separated, the completely separated heat-conducting oil enters the circulating pipeline 27 through the oil supplement pipeline 28, the control unit controls the cold oil inlet oil cut-off valve 247 to open, and then the separated heat-conducting oil is transported from the circulating pipeline 27 to the heat-conducting oil inlet pipeline 25 to enter the coil 11 of the reaction kettle 1 to supplement the oil of the coil 11 of the reaction kettle 1; the heat-conducting oil that is not completely reacted and has gas in the separator 32 enters the heat-conducting oil storage tank 21 from the liquid conveying pipeline 33, and the gas can be discharged through the gas discharge pipeline of the heat-conducting oil storage tank 21, when the liquid level in the heat-conducting oil storage tank 21 reaches 80%, nitrogen is added into the heat-conducting oil storage tank 21 through the nitrogen pipeline 34 to push the heat-conducting oil into the return oil pipeline 35, the heat-conducting oil in the return oil pipeline 35 enters the recovery pump 6, the recovery pump 6 transports the heat-conducting oil that is not completely reacted back to the separator 32 to be separated again, the step of separating again can adopt the above process, and when the liquid level in the heat-conducting oil storage tank 21 reaches 5%, the recovery pump 6 stops running, and during the separation process, the completely separated heat-conducting oil can enter the pressure regulating pipeline 26, the pressure regulating valve 5 on the pressure regulating pipeline 26 and the heat oil inlet temperature regulating valve 242 and the heat oil inlet cut-off valve 243 on the heat-conducting oil inlet pipeline 25 are opened by the control unit, the pressure of the pressure regulating valve 5 is kept at 0.4 MPa, and the heat-conducting oil after pressure keeping is transported from the pressure regulating pipeline 26 to the heat-conducting oil inlet pipeline 25 to enter the coil 11 of the reaction kettle 1 to realize the recycling of the heat-conducting oil, reduce the waste of the cost of the heat-conducting oil, and improve the functions of automatic oil supplement, temperature regulation, automatic oil discharge and automatic gas discharge of the heat-conducting oil system.
[0032] When the heat-conducting oil needs to be discharged, the heat-conducting oil is transported to the heat-conducting oil return main pipeline 36 through the recovery pump 6.
[0033] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, therefore equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.
Claims
1. A heat transfer oil system for a polymerization reactor, characterized in that, The system includes a reactor (1) and an oil temperature control system (2) and an oil-gas separation system (3) connected to the reactor (1). A coil (11) is provided on the side wall of the reactor (1), and a heat transfer oil inlet pipe (25) is connected to the outside of the reactor (1). The heat transfer oil inlet pipe (25) is connected to the coil (11). The oil temperature control system (2) includes a booster pump (21), a cooler (22), a cold oil return pipe (23), and an interlock assembly (24). The booster pump (21) is installed on the heat transfer oil inlet pipe (25). The heat transfer oil inlet pipe (25) is connected to a pressure regulating pipe (26) and a circulation pipe (27). The pressure regulating pipe (26) is connected to the oil-gas separation system (3). The circulation pipe (27) is connected to the cooler (22). The circulation pipe (27) is connected to a makeup oil pipe (28). The makeup oil pipe (28) is connected to the oil-gas separation system (3). The circulation pipe (27) is also equipped with a circulation pump (29). One end of the cold oil return pipe (23) is connected to the cooler (22), and the other end is connected to the oil-gas separation system (3). The temperature of the heat transfer oil in the reactor (1), the heat transfer oil feed pipe (25), the cold oil return pipe (23), and the circulation pipe (27) is controlled by the interlocking assembly (24).
2. The heat transfer oil system for a polymerization reactor according to claim 1, characterized in that, The interlocking assembly (24) includes a control alarm instrument (241), a hot oil inlet temperature regulating valve (242), a hot oil inlet shut-off valve (243), a temperature sensor (244), a hot oil return shut-off valve (245), a cold oil return shut-off valve (246), and a cold oil inlet shut-off valve (247). The control alarm instrument (241) is connected to the bottom of the reactor (1) via a pipeline. The hot oil inlet temperature regulating valve (242), the hot oil inlet shut-off valve (243), and the temperature sensor (244) are sequentially arranged on the heat transfer oil feed pipeline (25). The hot oil inlet temperature regulating valve (242) and the temperature sensor (244) are electrically connected. The hot oil return shut-off valve (245) and the cold oil return shut-off valve (246) are installed on the cold oil return pipeline (23). Several hot oil return pipelines (248) connected to the outside of the reactor (1) and communicating with the coil (11) of the reactor (1) are connected. Several hot oil return pipelines (248) are all connected to the hot oil return shut-off valve (245) through pipelines. The cold oil inlet shut-off valve (247) is installed on the circulation pipeline (27). The control alarm instrument (241) is electrically connected to the cold oil inlet shut-off valve (247), the hot oil return shut-off valve (245), the cold oil return shut-off valve (246), and the cold oil inlet shut-off valve (247) respectively.
3. The heat transfer oil system for a polymerization reactor according to claim 1, characterized in that, The oil replenishment pipeline (28) is equipped with an oil replenishment shut-off valve (4).
4. The heat transfer oil system for a polymerization reactor according to claim 1, characterized in that, The oil-gas separation system (3) includes a heat transfer oil storage tank (31) and a separator (32). The top side of the heat transfer oil storage tank (31) is connected to the top of the separator (32) through a liquid conveying pipe (33), and the other side of the top is connected to a nitrogen pipe (34). The bottom is connected to the bottom of the separator (32) through a return oil pipe (35). A heat transfer oil return main pipe (36) is connected to the side wall of the return oil pipe (35), and the pressure regulating pipe (26) is connected to the side wall of the return oil pipe (35).
5. The heat transfer oil system for a polymerization reactor according to claim 1, characterized in that, The pressure regulating pipe (26) is equipped with a pressure regulating valve (5).
6. The heat transfer oil system for a polymerization reactor according to claim 4, characterized in that, The return oil pipeline (35) is equipped with a recovery pump (6).
7. The heat transfer oil system for a polymerization reactor according to claim 4, characterized in that, The liquid delivery pipeline (33) is equipped with a liquid level regulating valve (7).