Heat conduction oil emergency cooling heat energy comprehensive utilization system

Abstract

The utility model relates to the technical field of chemical raw material preparation, in particular to a heat conduction oil emergency cooling heat energy comprehensive utilization system. The heat conduction oil emergency cooling heat energy comprehensive utilization system comprises a reaction kettle, an electric heater, a circulation assembly and a quenching assembly, the reaction kettle is filled with heat conduction oil, the electric heater is used for heating the heat conduction oil to provide a heat source for a material reaction in the reaction kettle, and the heat conduction oil exchanges heat with the quenching assembly through the circulation assembly. And the quenching assembly is used for cooling the high-temperature heat-conducting oil and preheating the low-temperature heat-conducting oil. The heat conduction oil emergency cooling heat energy comprehensive utilization system meets the heat conduction oil emergency cooling requirement with small investment and operation cost, can provide heat temperature rise support for low-temperature heat conduction oil, improves the working efficiency of the reaction kettle, meanwhile, recovers high-temperature heat conduction oil heat energy through byproduct low-pressure steam, and reduces the energy consumption of the reaction kettle. And the discharge amount and the treatment difficulty of three wastes in an emergency state are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical raw material preparation technical field especially is a kind of heat-conducting oil emergency cooling thermal energy comprehensive utilization system. BACKGROUND

[0002] In chemical raw material preparation, especially in the preparation of NMP, alpha-P and other high-boiling (more than 200 DEG C) organic chemical raw materials, the generation reaction needs to be carried out under high temperature and high pressure, and the existing technology usually uses heat-conducting oil as heat source medium, and the electric heating type reaction kettle is injected with heat-conducting oil, and the material reacts under high pressure in the reaction tube. Once the reaction tube leaks, the material leaks from the high-pressure side to the low-pressure heat-conducting oil side, causing the reaction kettle to increase in gasification amount and pressure, and in severe cases, overpressure leakage, fire and explosion, and personnel scalding risk. At the same time, when the reaction kettle over-temperature, only rely on cutting off the power supply of electric heating, the heat-conducting oil in the reaction kettle is cooled and cooled naturally, and lacks rapid cooling measures.

[0003] The patent for invention with publication number CN113639511B discloses a heat-conducting oil heating reaction kettle emergency cooling device, which comprises a first heat exchanger connected with a reaction kettle body, an oil outlet of the reaction kettle body is communicated with an oil inlet of the first heat exchanger through a first oil pipe, an oil inlet of the reaction kettle body is communicated with an oil outlet of the first heat exchanger through a second oil pipe, a first pump body is arranged on the second oil pipe, an emergency cooling piece for pre-cooling the heat-conducting oil is arranged on the first oil pipe, and the emergency cooling piece is communicated with the oil inlet of the first heat exchanger.

[0004] The above-mentioned heat-conducting oil heating reaction kettle emergency cooling device has the effect of reducing safety hazards and can emergency cool heat-conducting oil, but due to the involved devices including pump body, heat exchanger, emergency cooling oil tank, rotating assembly and other devices, the cost of modification through the existing reaction kettle is high, and at the same time, it is necessary to provide large flow of cooling medium and electric driving force in accident state, which increases the investment and operation cost of auxiliary facilities, and the heat energy utilization of heat-conducting oil is not enough. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a heat-conducting oil emergency cooling thermal energy comprehensive utilization system, which meets the heat-conducting oil emergency cooling and cooling demand with small investment and operation cost without large modification of the existing technical equipment type and function, can provide heat warming support for low-temperature heat-conducting oil, improve the working efficiency of reaction kettle, recover high-temperature heat-conducting oil heat energy through by-product low-pressure steam, reduce the discharge amount and processing difficulty of three wastes in emergency state, and is more energy-saving and environment-friendly.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The application discloses a heat-conducting oil emergency cooling thermal energy comprehensive utilization system, which comprises a reaction kettle, an electric heater, a circulating assembly and an emergency cooling assembly, the reaction kettle is filled with heat-conducting oil, the electric heater is used for heating the heat-conducting oil to provide a heat source for material reaction in the reaction kettle, the heat-conducting oil is exchanged between the circulating assembly and the emergency cooling assembly, and the emergency cooling assembly is used for cooling high-temperature heat-conducting oil and preheating low-temperature heat-conducting oil.

[0008] Further, the circulating assembly comprises a circulating pipeline and a circulating pump installed on the circulating pipeline.

[0009] Further, the emergency cooling assembly comprises an emergency cooler, a flash evaporator, a steam pipeline, a condensate pipeline, a low-pressure steam pipeline network and a condensate input pipeline, the height of the flash evaporator is higher than that of the emergency cooler, the bottom of the flash evaporator is communicated with the bottom of the emergency cooler through the condensate pipeline, the top of the flash evaporator is communicated with the top of the emergency cooler through the steam pipeline, the flash evaporator is connected with the condensate input pipeline, the top of the flash evaporator is also communicated with the low-pressure steam pipeline network, and a pressure regulating valve is arranged at the connection position of the low-pressure steam pipeline network and the flash evaporator.

[0010] Further, the emergency cooler comprises a plurality of heat exchange pipes, and the two ends of the heat exchange pipes are communicated with the condensate pipeline and the steam pipeline respectively.

[0011] Further, the emergency cooler further comprises a shell section, and the heat-conducting oil is exchanged through the shell section.

[0012] Further, the reaction kettle is a tubular reactor, the reaction kettle is provided with a coil pipe, the material is arranged in the coil pipe, and the reaction zone of the coil pipe is immersed in the heat-conducting oil.

[0013] Further, the top of the reaction kettle is provided with a pressure sensor with an alarm function.

[0014] Further, the bottom of the reaction kettle is provided with a temperature sensor with an alarm function.

[0015] Further, the pressure sensor and the temperature sensor are electrically connected with a wireless communication device, and the pressure sensor and the temperature sensor are electrically connected with a service terminal through the wireless communication device.

[0016] Further, the electric heater, the circulating pump, the flash evaporator, the pressure regulating valve, the pressure sensor and the temperature sensor are electrically connected with a controller.

[0017] The utility model discloses a beneficial effect: the utility model discloses a kind of heat-conducting oil emergency cooling heat energy comprehensive utilization system, including reaction kettle, electric heater, circulating component and quenching component, the reaction kettle is filled with heat-conducting oil, the electric heater is used to heat heat-conducting oil as the heat source for the material reaction in reaction kettle, heat-conducting oil is exchanged between the circulating component and quenching component, the quenching component is used to cool high-temperature heat-conducting oil and low-temperature heat-conducting oil preheating.Reaction kettle is the tubular reactor of heat-conducting oil inside, electric heater is used to heat heat-conducting oil, circulating component is used to circulate heat-conducting oil and be introduced into quenching component and heat exchange, quenching component is used to cool high-temperature heat-conducting oil and low-temperature heat-conducting oil preheating.A kind of heat-conducting oil emergency cooling heat energy comprehensive utilization system of the application, under the premise of not making big change to prior art equipment type and function, with small investment and operating cost, meet the heat-conducting oil emergency cooling temperature drop demand, can also provide heat temperature support for low-temperature heat-conducting oil, improve the work efficiency of reaction kettle, simultaneously by-product low-pressure steam recycles high-temperature heat-conducting oil heat energy, reduces the three waste discharge amount and processing difficulty under emergency state, is more energy saving and environment friendly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Mark explanation: 1-reaction kettle, 2-electric heater, 3-circulation pipeline, 4-circulation pump, 5-quenching device, 6-flash evaporator, 7-steam pipeline, 8-liquid pipeline, 9-low-pressure steam pipe network, 10-heat exchange pipe, 11-coil, 12-pressure sensor, 13-temperature sensor, 14-pressure regulating valve, 15-liquid input pipe. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments are not intended to limit the scope of the present disclosure, as claimed. Rather, these embodiments are intended to convey the scope of the present disclosure to those skilled in the art. The present disclosure can be carried out in various forms and should not be limited by the embodiments set forth herein.

[0021] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0022] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0023] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0024] Embodiment One:

[0025] As Figure 1As shown, the embodiment provides a heat-conducting oil emergency cooling heat energy comprehensive utilization system, which comprises a reaction kettle 1, an electric heater 2, a circulating assembly and an emergency cooling assembly. The reaction kettle 1 is filled with heat-conducting oil. The electric heater 2 is used for heating the heat-conducting oil to provide a heat source for the reaction of the material in the reaction kettle 1. The heat-conducting oil is exchanged between the circulating assembly and the emergency cooling assembly. The emergency cooling assembly is used for cooling the high-temperature heat-conducting oil and preheating the low-temperature heat-conducting oil. In actual use, the reaction kettle 1 is a tubular reactor filled with heat-conducting oil. The electric heater 2 is used for heating the heat-conducting oil. The circulating assembly is used for circulating the heat-conducting oil into the emergency cooling assembly for heat exchange. The emergency cooling assembly is used for cooling the high-temperature heat-conducting oil and preheating the low-temperature heat-conducting oil. When the system is started, the emergency cooling assembly is started first, and then the electric heater 2 is started to heat the low-temperature heat-conducting oil. In order to improve the heating speed of the low-temperature heat-conducting oil, the circulating assembly is used to circulate the heat-conducting oil into the emergency cooling assembly to assist in heating the low-temperature heat-conducting oil. When the heat-conducting oil is overheated during the operation of the system, the high-temperature heat-conducting oil is circulated into the emergency cooling assembly through the circulating assembly for cooling, and an alarm is given to remind the staff to intervene in time.

[0026] In the embodiment, the circulating assembly comprises a circulating pipeline 3 and a circulating pump 4 installed on the circulating pipeline 3. In actual use, the heat-conducting oil is pumped into the emergency cooling assembly by the circulating pump 4 for heat exchange, and then the heat-conducting oil after heat exchange is returned to the reaction kettle 1 through the circulating pipeline 3.

[0027] In the embodiment, the quenching assembly comprises a quencher 5, a flash evaporator 6, a steam pipeline 7, a condensate pipeline 8, a low-pressure steam pipeline network 9 and a condensate input pipeline 15, the height of the flash evaporator 6 is higher than that of the quencher 5, the bottom of the flash evaporator 6 is communicated with the bottom of the quencher 5 through the condensate pipeline 8, the top of the flash evaporator 6 is communicated with the top of the quencher 5 through the steam pipeline 7, the flash evaporator 6 is connected with the condensate input pipeline 15, the top of the flash evaporator 6 is also communicated with the low-pressure steam pipeline network 9, and a pressure regulating valve 14 is arranged at the connection between the low-pressure steam pipeline network 9 and the flash evaporator 6. In actual use, the quencher 5 is used for cooling high-temperature heat-conducting oil and heating low-temperature heat-conducting oil, the temperature of the quencher 5 is about 150 DEG C when the quencher 5 is running, the flash evaporator 6 is used for evaporating condensate and separating steam, the height difference between the flash evaporator 6 and the quencher 5 is arranged to make the liquid level between the flash evaporator 6 and the quencher 5 have a height difference, the bottoms of the flash evaporator 6 and the quencher 5 are communicated through the condensate pipeline 8, according to the principle of communicating vessels, the liquid levels between the flash evaporator 6 and the quencher 5 will finally be flush, when the quencher 5 cools high-temperature heat-conducting oil, the condensate in the quencher 5 will be gasified into steam and input into the flash evaporator 6 through the steam pipeline 7, and the excess steam is discharged to the low-pressure steam pipeline network 9 through the opened pressure regulating valve 14 for subsequent use, at this time, as the condensate in the quencher 5 evaporates, the condensate in the flash evaporator 6 is continuously supplemented into the quencher 5, and the flash evaporator 6 continuously obtains condensate source through the connected condensate input pipeline 15; when the quencher 5 heats low-temperature heat-conducting oil, the flash evaporator 6 is opened at this time, the steam generated in the flash evaporator 6 is backflowed into the quencher 5 through the adjusted pressure regulating valve 14, the low-temperature heat-conducting oil in the quencher 5 is heated, and the steam is cooled into condensate, the condensate in the quencher 5 flows into the flash evaporator 6 for evaporation, forming a cycle, heating the low-temperature heat-conducting oil, and finally realizing cooling of high-temperature heat-conducting oil and preheating of low-temperature heat-conducting oil.

[0028] In the embodiment, the quencher 5 comprises a plurality of heat exchange pipes 10, and the two ends of the heat exchange pipes 10 are respectively communicated with the condensate pipeline 8 and the steam pipeline 7. In actual use, the plurality of heat exchange pipes 10 are arranged to increase the contact area with the heat-conducting oil and improve the heat exchange efficiency.

[0029] In the embodiment, the quencher 5 further comprises a shell pass, and the heat-conducting oil exchanges heat through the shell pass. In actual use, the heat-conducting oil exchanges heat with the heat exchange pipes 10 installed in the quencher 5 through the shell pass.

[0030] Embodiment two:

[0031] As Figure 1As shown, on the basis of the first embodiment, the reaction kettle 1 is a tubular reactor, the reaction kettle 1 is internally provided with a coil 11, the material is placed in the coil 11, and the reaction zone of the coil 11 is immersed in the heat conducting oil. In actual use, the reaction kettle 1 is a tubular reactor internally provided with heat conducting oil, the reaction material is pumped into the coil 11 of the reaction kettle 1 after being pressurized, the reaction is an endothermic reaction, and the electric heater 2 is used to heat the heat conducting oil to a high temperature (300-370℃) to provide heat for the reaction.

[0032] In this embodiment, the top of the reaction kettle 1 is provided with a pressure sensor 12 with an alarm function. In actual use, the pressure sensor 12 with an alarm function is arranged on the top of the reaction kettle 1 to monitor the gas phase pressure on the heat conducting oil side online, and can alarm in time when the gas phase pressure on the heat conducting oil side is abnormal.

[0033] In this embodiment, the bottom of the reaction kettle 1 is provided with a temperature sensor 13 with an alarm function. In actual use, the temperature sensor 13 with an alarm function is arranged on the bottom of the reaction kettle 1 to monitor the temperature of the heat conducting oil online, and can start the alarm when the temperature of the heat conducting oil exceeds the set threshold temperature (380℃±5℃).

[0034] In this embodiment, the pressure sensor 12 and the temperature sensor 13 are both electrically connected with a wireless communication device, and the pressure sensor 12 and the temperature sensor 13 are electrically connected with a service terminal through the wireless communication device. In actual use, the pressure sensor 12 and the temperature sensor 13 not only need to transmit data to the controller, but also need to transmit monitoring data to the service terminal for the background staff to view the working condition of the reaction kettle 1 in real time, and the wireless communication device is arranged to establish a communication connection with the service terminal for data transmission.

[0035] In this embodiment, a controller is included, and the electric heater 2, the circulating pump 4, the flash evaporator 6, the pressure regulating valve 14, the pressure sensor 12 and the temperature sensor 13 are all electrically connected with the controller. In actual use, the controller is used to control the connected devices, and at the same time, the monitoring data is acquired, and the connected devices are controlled according to the monitoring data.

[0036] All the technical features in the embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical scheme of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical scheme of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the utility model, and all should be covered in the claim range of the utility model. The technical, shape and structure parts not described in detail in the utility model are all known technologies.

[0037] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, still includes other mode implementation, under the premise of not departing from the technical scheme conception, any obvious replacement is within the protection scope of the utility model.

Claims

1. A comprehensive heat energy utilization system for emergency cooling of heat transfer oil, characterized in that: The application relates to a heat conducting oil reaction system, which comprises a reaction kettle (1), an electric heater (2), a circulating assembly and a quenching assembly, the reaction kettle (1) is filled with heat conducting oil, the electric heater (2) is used for heating the heat conducting oil to provide a heat source for the reaction of materials in the reaction kettle (1), the heat conducting oil is heat exchanged between the circulating assembly and the quenching assembly, and the quenching assembly is used for cooling high-temperature heat conducting oil and preheating low-temperature heat conducting oil.

2. The heat-conducting oil emergency cooling thermal energy comprehensive utilization system according to claim 1, characterized in that: The circulating assembly comprises a circulating pipeline (3) and a circulating pump (4) installed on the circulating pipeline (3).

3. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 2, characterized in that: The quenching assembly comprises a quencher (5), a flash evaporator (6), a steam pipeline (7), a condensate pipeline (8), a low-pressure steam pipeline network (9) and a condensate input pipeline (15), the height of the flash evaporator (6) is higher than that of the quencher (5), the bottom of the flash evaporator (6) is communicated with the bottom of the quencher (5) through the condensate pipeline (8), the top of the flash evaporator (6) is communicated with the top of the quencher (5) through the steam pipeline (7), the flash evaporator (6) is connected with the condensate input pipeline (15), the top of the flash evaporator (6) is also communicated with the low-pressure steam pipeline network (9), and a pressure regulating valve (14) is arranged at the connecting position of the low-pressure steam pipeline network (9) and the flash evaporator (6).

4. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 3, characterized in that: The quencher (5) comprises a plurality of heat exchange pipes (10), and the two ends of the heat exchange pipes (10) are communicated with the condensate pipeline (8) and the steam pipeline (7) respectively.

5. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 4, characterized in that: The quencher (5) further comprises a shell section, and the heat conducting oil is heat exchanged through the shell section.

6. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 5, characterized in that: The reaction kettle (1) is a tubular reactor, the reaction kettle (1) is internally provided with a coil pipe (11), the materials are arranged in the coil pipe (11), and the reaction zone of the coil pipe (11) is immersed in the heat conducting oil.

7. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 6, characterized in that: A pressure sensor (12) with an alarm function is arranged at the top of the reaction kettle (1).

8. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 7, characterized in that: A temperature sensor (13) with an alarm function is arranged at the bottom of the reaction kettle (1).

9. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 8, characterized in that: The pressure sensor (12) and the temperature sensor (13) are electrically connected with wireless communication devices, and the pressure sensor (12) and the temperature sensor (13) are electrically connected with a service terminal through the wireless communication devices.

10. The hot oil emergency cooling thermal energy comprehensive utilization system according to claim 9, characterized in that: The electric heater (2), the circulating pump (4), the flash evaporator (6), the pressure regulating valve (14), the pressure sensor (12) and the temperature sensor (13) are electrically connected with a controller.

Images