Cooling water conveying device for nitration reaction

Abstract

The utility model discloses a cooling water conveying device for nitration reaction, which comprises a cooling water pipeline, an electric pump, a diesel pump, a nitration kettle and a detection mechanism, the cooling water pipeline comprises a first pipeline and a second pipeline, the first pipeline is provided with a first branch and a second branch, the first branch is connected with a water inlet of the electric pump, a first valve is arranged on the first branch, and a second valve is arranged on the second pipeline. The second pipeline is provided with a third branch and a fourth branch, the third branch is connected with a water outlet of the electric pump, the third branch is provided with a third valve, the fourth branch is connected with a water outlet of the diesel pump, and the fourth branch is provided with a fourth valve. The main path of the second pipeline is connected with the nitration kettle, the diesel pump is provided with a diesel pump controller, the rotating speed of the diesel pump can be adjusted through the diesel pump controller, the displacement of the electric pump is smaller than that of the diesel pump, and the detection mechanism is used for detecting the pressure or temperature of the cooling water conveying device.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitration reaction equipment technical field especially relates to a kind of cooling water conveying devices of nitration reaction. BACKGROUND

[0002] In the chemical industry, nitration is one of the important processes for manufacturing various chemicals. These reactions usually release a large amount of heat, and if not cooled in time and effectively, it may lead to temperature runaway, causing serious safety problems. Therefore, in the nitration process, it is crucial to ensure the reliability and efficiency of the cooling system.

[0003] Traditional cooling water delivery systems mainly rely on electric pumps for power. However, this single power-driven approach has some limitations: for example, when power supply is interrupted or electric pumps fail, it may not guarantee sufficient cooling water flow, thereby affecting the safety and stability of the nitration reaction. In addition, due to the limited capacity of electric pumps, they may not meet the stringent cooling requirements of the nitration process. SUMMARY

[0004] Therefore, it is necessary to provide a cooling water conveying device for nitration reaction to solve the problem that the existing cooling water delivery system mainly relies on electric pumps for power, and there is a lack of power.

[0005] To achieve the above purpose, the embodiment provides a cooling water conveying device for nitration reaction, which comprises a cooling water pipeline, an electric pump, a diesel pump, a nitration kettle and a detection mechanism. The cooling water pipeline comprises a first pipeline and a second pipeline. The first pipeline has a first branch and a second branch. The main road of the first pipeline is used to connect the cooling water, and the first branch is connected with the water inlet of the electric pump. The first branch is provided with a first valve. The second branch is connected with the water inlet of the diesel pump. The second branch is provided with a second valve. The second pipeline has a third branch and a fourth branch. The third branch is connected with the water outlet of the electric pump. The third branch is provided with a third valve. The fourth branch is connected with the water outlet of the diesel pump. The fourth branch is provided with a fourth valve. The main road of the second pipeline is connected with the nitration kettle. The diesel pump has a diesel pump controller. The speed of the diesel pump can be adjusted through the diesel pump controller. The displacement of the electric pump is less than that of the diesel pump. The detection mechanism is used to detect the pressure or temperature of the cooling water conveying device.

[0006] Further, the model of the diesel pump is bc9.0 / 90G-BYW, the flow rate is 320 cubic meters / hour, the model of the electric pump is NSC200-150-460, the power is 132KW, and the flow rate is 200 cubic meters / hour.

[0007] Further, a filter assembly is arranged on the cooling water pipeline to filter impurities in the cooling water pipeline.

[0008] Further, the filter assembly comprises a filter cartridge arranged on the main path of the first pipeline.

[0009] Further, the detection mechanism comprises a pressure sensor arranged on the main path of the second pipeline to detect the pressure of the cooling water in the cooling water pipeline, and the pressure sensor is connected to the PLC controller.

[0010] Further, the detection mechanism comprises a temperature sensor arranged on the cooling water pipeline, and the temperature sensor is connected to the PLC controller.

[0011] Further, a PLC controller is arranged, and the electric pump has an electric pump controller, and the PLC controller is electrically connected to the diesel pump controller, the first valve, the second valve, the third valve, the fourth valve, the electric pump controller, and the detection mechanism.

[0012] Further, an emergency stop mechanism is arranged, and the PLC controller is used to control the emergency stop mechanism to cut off the power supply of the diesel pump when the temperature or pressure of the cooling water exceeds a threshold value.

[0013] Compared with the prior art, the above technical scheme has the following beneficial effects: the diesel pump is introduced as part of the redundancy design, and the powerful and stable diesel pump is used to deliver the cooling water, and when the power supply is abnormally cut off, the diesel pump can be switched to timely and effectively cool the nitration reaction, greatly reducing the risk of cooling failure caused by power failure, and improving the safety factor of the entire nitration process.

[0014] The above content related to the utility model is only a summary of the technical scheme of the present application, in order to enable those skilled in the art to more clearly understand the technical scheme of the present application, and then can be implemented according to the content recorded in the specification and the drawings, and in order to make the above purpose and other purposes, characteristics and advantages of the present application more easily understood, the following is described in combination with the specific embodiments and the drawings of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are only used to show the principles, implementation manners, applications, characteristics and effects of the specific embodiments and other related contents of the present application, and cannot be considered as a limitation of the present application.

[0016] Fig. 1 is a schematic view of the cooling water delivery device in the present embodiment;

[0017] Fig. 2Fig. 2 is a schematic view of a cooling water delivery device according to the present embodiment.

[0018] Reference Signs List:

[0019] 1. Electric pump

[0020] 2. Diesel pump

[0021] 3. Nitration kettle

[0022] 4. Cooling water pipe

[0023] 41. First pipe; 411. First branch; 412. Second branch; 413. First valve; 414. Second valve

[0024] 42. Second pipe; 421. Third branch; 422. Fourth branch; 423. Third valve; 424. Fourth valve; 425. Fifth valve; 426. Sixth valve

[0025] 5. Pressure sensor

[0026] 6. Filter assembly DETAILED DESCRIPTION

[0027] To make clear the possible application scenarios, technical principles, specific implementable schemes, and the purposes and effects achieved by the present application, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to make the technical solutions of the present application clearer, and thus only serve as examples, but cannot be used to limit the protection scope of the present application.

[0028] In this text, the term “embodiment” means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term “embodiment” appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0030] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0031] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0032] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0033] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0034] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0035] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] Please see Figs. 1-2 This embodiment provides a cooling water supply device for a nitration reaction, including a cooling water pipeline 4, an electric pump 1, a diesel pump 2, a nitration reactor 3, and a detection mechanism. The cooling water pipeline 4 includes a first pipeline 41 and a second pipeline 42. The first pipeline 41 has a first branch 411 and a second branch 412. The main branch of the first pipeline 41 is used to connect to the cooling water. The first branch 411 is connected to the inlet of the electric pump 1 and is equipped with a first valve 413. The second branch 412 is connected to the inlet of the diesel pump 2 and is equipped with a second valve 414. The second pipeline 42 has a third branch 421 and a fourth branch 422. The third branch 421 is connected to the outlet of the electric pump 1 and is equipped with a third valve 423. The fourth branch 422 is connected to the outlet of the diesel pump 2 and is equipped with a fourth valve 424. The main pipeline of the second pipeline 42 is connected to the nitration vessel 3. The diesel pump 2 has a diesel pump 2 controller, which can adjust the speed of the diesel pump 2. The displacement of the electric pump 1 is less than that of the diesel pump 2. The detection mechanism is used to detect the pressure or temperature of the cooling water delivery device.

[0037] The above technical solution has the following beneficial effects:

[0038] Diesel pump 2 was introduced as part of the redundancy design. The powerful and stable diesel pump 2 delivers cooling water. When the mains power fails, switching to diesel pump 2 can cool the nitration reaction in a timely and effective manner, which greatly reduces the risk of cooling failure due to power failure and improves the safety factor of the entire nitration process.

[0039] In this embodiment, diesel pump 2 is model BC9.0 / 90G-BYW with a flow rate of 320 cubic meters per hour, while electric pump 1 is model NSC200-150-460 with a power of 132 kW and a flow rate of 200 cubic meters per hour. Compared to electric pump 1, the efficiency of diesel pump 2 can be increased to approximately 65%.

[0040] Please see Fig. 2In this embodiment, the cooling water conveying device also includes a filter assembly 6, which is installed on the cooling water pipe 4 to filter impurities in the cooling water pipe 4. When the cooling water flows through the cooling water pipe 4, it first passes through the installed filter assembly 6. During this process, larger particles (such as silt, rust, etc.) and suspended small particles in the cooling water are captured by the filter media inside the filter assembly 6. The cleaned cooling water continues along the predetermined path and finally reaches its destination—the nitration reactor 3—to provide the necessary heat exchange medium for the ongoing chemical reaction.

[0041] In this embodiment, the filter assembly 6 includes a filter cartridge located on the main line of the first pipe 41. This design ensures that all cooling water entering the system is effectively pretreated before reaching the electric pump 1 or the diesel pump 2, thereby protecting these critical devices from impurities.

[0042] In this embodiment, the filter component 6 can be cleaned or replaced periodically to ensure the filtration effect.

[0043] Please see Fig. 1 In this embodiment, the detection mechanism includes a pressure sensor 5, which is installed on the main line of the second pipeline 42 to detect the pressure of the cooling water in the cooling water pipeline 4. The pressure sensor 5 is connected to the PLC controller. A sixth valve 426 may be installed on a branch line of the second pipeline 42 where the pressure sensor 5 is located. By monitoring the pressure of the cooling water in real time, potential risk points can be identified and dealt with in a timely manner, significantly improving the safety of the entire system and providing operators with accurate operating status information. In particular, in response to emergencies, it enables rapid measures to prevent accidents from occurring.

[0044] Please see Fig. 1 In this embodiment, a fifth valve 425 may be provided on the main line of the second pipeline 42.

[0045] In this embodiment, the detection mechanism includes a temperature sensor, which is installed on the nitration vessel and connected to a PLC controller. The temperature can be detected by the temperature sensor, and the PLC controller can send an alarm message to the terminal when the temperature is abnormal.

[0046] In this embodiment, the cooling water delivery device also includes a PLC controller. The electric pump 1 has an electric pump 1 controller, and the PLC controller is electrically connected to the diesel pump 2 controller, the first valve 413, the second valve 414, the third valve 423, the fourth valve 424, the electric pump 1 controller, and the detection mechanism. When it is necessary to adjust the flow rate or pressure of the cooling water, the PLC sends a command to the electric pump 1 controller to change the operating state of the electric pump 1. If it is necessary to start the diesel pump 2 as a backup power source, the PLC activates the diesel pump 2 controller and adjusts its output accordingly. Simultaneously, the PLC can also directly control the state of the four valves to precisely manage the water flow direction and distribution.

[0047] In this embodiment, the cooling water delivery device also includes an emergency stop mechanism. The PLC controller is used to control the emergency stop mechanism to cut off the power supply to the diesel pump 2 when the temperature or pressure of the cooling water exceeds a threshold. The emergency stop mechanism may include one or more mechanisms for cutting off the power supply to the diesel pump 2, such as relays, contactors, or dedicated power-off switches. These components are typically installed on the power supply line of the diesel pump 2 and are controlled by the PLC controller.

[0048] Under normal operating conditions, the PLC controller continuously monitors data from temperature and pressure sensors 5. If the temperature or pressure of the cooling water exceeds a preset safety threshold, the PLC controller will immediately initiate the following process:

[0049] Emergency stop triggered: The PLC controller sends a command to the emergency stop mechanism, which quickly cuts off the power to diesel pump 2, stopping its operation. This step effectively prevents excessive temperature or pressure from causing further damage to the system and reduces the possibility of danger.

[0050] Notify operators: Simultaneously, the PLC controller may activate the alarm system, sending an alert signal to the operators, prompting them to check and resolve the cause of the abnormality. Alarms can be triggered via audible and visual alarms, warning messages on the display screen, or remote notifications.

[0051] Event Log Recording: The PLC controller automatically records the time, cause, and relevant parameters of this emergency shutdown, providing a basis for subsequent analysis and troubleshooting. This is crucial for maintaining historical data and improving the system.

[0052] Waiting for Reset: After an emergency shutdown, the system will remain in a safe state until the operator confirms the problem has been resolved and resumes operation via the manual reset button. This ensures that all potential risks have been properly addressed and prevents similar problems from recurring.

[0053] In this embodiment, a high-performance diesel pump 2 is selected, which has strong delivery capacity and good corrosion resistance, and can adapt to the working environment of cooling water. The design of diesel pump 2 ensures stable operation under various operating conditions, providing a continuous and reliable supply of cooling water for the nitration process.

[0054] In this embodiment, the first pipe 41 and the second pipe 42 are made of high-quality pipe materials, possessing excellent pressure resistance and corrosion resistance, and capable of withstanding the pressure and chemical properties of cooling water. The pipeline layout is reasonable, reducing resistance and leakage risks, and ensuring that cooling water can be quickly and smoothly delivered to the parts requiring cooling.

[0055] In this embodiment, the cooling water delivery device also includes a safety protection unit, which can ensure that the entire cooling water delivery system operates in a safe and reliable state.

[0056] In this embodiment, the following beneficial effects can be achieved:

[0057] 1. Improve the safety of the nitration process: Cooling water is delivered by a powerful and stable diesel pump. When the mains power fails, the diesel pump is automatically switched to cool the nitration reaction in a timely and effective manner, reducing the risk of accidents.

[0058] 2. Enhanced reliability of the cooling system: The high performance and stability of the diesel pump ensure the continuity of cooling water supply and reduce safety hazards caused by insufficient cooling.

[0059] 3. Precise control of cooling water flow: The PLC controller can adjust the speed of the diesel pump according to actual needs, so as to achieve precise control of the cooling water flow and improve the cooling effect.

[0060] 4. Filtration and safety protection functions: The filter components and safety protection unit work together to protect the cooling system and diesel pump from impurities and abnormal conditions, extending the service life of the equipment.

[0061] In summary, the diesel pump cooling system of this invention has significant advantages and positive effects, ensuring the stable and safe operation of nitration production.

[0062] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A cooling water conveying device for a nitration reaction, characterized in that, The system includes cooling water pipes, an electric pump, a diesel pump, a nitration reactor, and a detection mechanism. The cooling water pipes include a first pipe and a second pipe. The first pipe has a first branch and a second branch. The main branch of the first pipe is used to connect to cooling water. The first branch is connected to the inlet of the electric pump and is equipped with a first valve. The second branch is connected to the inlet of the diesel pump and is equipped with a second valve. The second pipe has a third branch and a fourth branch. The third branch is connected to the outlet of the electric pump and is equipped with a third valve. The fourth branch is connected to the outlet of the diesel pump and is equipped with a fourth valve. The main branch of the second pipe is connected to the nitration reactor. The diesel pump has a diesel pump controller, which can adjust the speed of the diesel pump. The detection mechanism is used to detect the pressure or temperature of the cooling water delivery device.

2. The cooling water conveying device according to claim 1, characterized in that, The diesel pump is model bc9.0 / 90G-BYW with a flow rate of 320 cubic meters per hour, and the electric pump is model NSC200-150-460 with a power of 132KW and a flow rate of 200 cubic meters per hour.

3. The cooling water conveying device according to claim 1, characterized in that, It also includes a filter assembly, which is disposed on the cooling water pipe and is used to filter impurities in the cooling water pipe.

4. The cooling water conveying device according to claim 3, characterized in that, The filtration assembly includes a filter cartridge disposed on the main section of the first pipeline.

5. The cooling water conveying device according to claim 1, characterized in that, The detection mechanism includes a pressure sensor, which is installed on the main line of the second pipeline and is used to detect the pressure of the cooling water in the cooling water pipeline. The pressure sensor is connected to a PLC controller.

6. The cooling water conveying device according to claim 1, characterized in that, The detection mechanism includes a temperature sensor, which is installed on the nitration reactor and connected to a PLC controller.

7. The cooling water conveying device according to claim 1, 5, or 6, characterized in that, It also includes a PLC controller, the electric pump has an electric pump controller, the PLC controller is electrically connected to the diesel pump controller, the first valve, the second valve, the third valve, the fourth valve, the electric pump controller, and the detection mechanism.

8. The cooling water conveying device according to claim 7, characterized in that, It also includes an emergency stop mechanism, the PLC controller being used to control the emergency stop mechanism to cut off the power supply to the diesel pump when the temperature or pressure of the cooling water exceeds a threshold.

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