3.0 mw chemical plant reaction kettle waste heat and pressure utilization equipment
Patent Information
- Application Number
- CN202522240270.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0008]为解决上述背景技术中提出的问题，本实用新型的目的在于提供一种3.0MW化工厂反应釜余热余压利用设备，具备了集成化布局节省场地且降低泄漏风险、分级换热提升余热回收效率、余压预处理与稳压保障能量转化稳定、多组件协同实现余热余压同步综合回收的优点，解决了现有设备分散式布局占地大且维护难、单一换热结构余热利用率低、余压转化因压力波动不稳定、仅能单一回收余热或余压导致能源回收总量有限的问题
1、本实用新型通过将余热收集机械组件（含高温换热罐、中温换热罐、螺旋式换热管组、隔温壳、进气口、余热管道）、余压转化机械组件（含过滤机械结构、多级可调透平机、稳压阀组）及能量耦合传动组件（含齿轮减速箱、发电机）均通过螺栓安装在集成式机体支撑架顶部，实现设备各核心组件的集成化布局，大幅减少传统分散式设备的管道连接节点，降低泄漏风险，同时缩小设备整体占地面积，提升场地适配性，且集成式设计便于设备整体安装、检修与移动，减少现场施工复杂度。
Smart Images
Figure CN224838559U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waste heat and waste pressure utilization technology of chemical plant reactors, specifically a waste heat and waste pressure utilization device for a 3.0MW chemical plant reactor. Background Technology
[0002] During the production and operation of a 3.0MW reactor in a chemical plant, a large amount of high-temperature waste heat and high-pressure exhaust gas are continuously generated. If these energy-containing media are directly discharged, it will not only cause serious energy waste, but may also have potential impacts on the surrounding environment and equipment. Therefore, recycling and utilizing them has become an important direction for energy conservation and consumption reduction in the chemical industry.
[0003] Currently, most waste heat and pressure recovery equipment in the industry adopts a decentralized layout design, where waste heat collection components, waste pressure conversion components, and energy output components are set up independently and connected by a large number of external pipelines. This decentralized structure not only occupies a large plant area, increasing the difficulty of site planning, but also significantly increases the risk of media leakage due to the large number of pipeline connection nodes. In addition, subsequent equipment maintenance requires disassembly and maintenance of each decentralized component separately, making the operation process complex and the maintenance cost high.
[0004] In the waste heat recovery process, existing equipment often uses a single heat exchange structure to handle the waste heat generated by the reactor, which is difficult to adapt to the waste heat medium in different temperature ranges during reactor operation (such as high-temperature steam and medium-temperature tail gas). As a result, the waste heat in the medium and low temperature range cannot be effectively utilized, and the waste heat recovery efficiency is generally low. Moreover, most heat exchange components lack effective insulation measures, and heat loss is easy to occur during the heat exchange process, which further reduces the actual recovery and utilization rate of waste heat and causes energy waste.
[0005] For waste pressure conversion and energy output, the coordination between waste pressure treatment components and energy conversion components in traditional equipment is poor. The waste pressure medium often lacks necessary pretreatment and pressure stabilization measures before entering the energy conversion component, which can easily lead to unstable operation of the energy conversion component due to medium pressure fluctuations, affecting the stability of output power. At the same time, the transmission structure design between the energy conversion component and the power generation component is not reasonable enough, which can easily lead to speed mismatch, resulting in low conversion efficiency of mechanical energy to electrical energy and failing to fully realize the energy value of waste pressure.
[0006] In addition, the existing equipment has a low degree of integration and insufficient linkage between components, making it difficult to achieve synchronous and efficient recovery and utilization of waste heat and waste pressure. Most equipment can only recover one type of energy, either waste heat or waste pressure, and cannot take into account the comprehensive recovery of both types of energy. This results in a limited total energy recovery capacity and poor economic benefits, making it difficult to meet the energy-saving requirements of chemical plants for high-energy-consuming equipment such as 3.0MW reactors.
[0007] Therefore, it is necessary to provide a waste heat and pressure utilization device for a 3.0MW chemical plant reactor to solve this problem. Utility Model Content
[0008] To address the problems mentioned in the background art, the purpose of this utility model is to provide a 3.0MW chemical plant reactor waste heat and pressure utilization device. It has the advantages of integrated layout to save space and reduce leakage risk, staged heat exchange to improve waste heat recovery efficiency, waste pressure pretreatment and pressure stabilization to ensure stable energy conversion, and multi-component collaboration to achieve synchronous and comprehensive recovery of waste heat and pressure. It solves the problems of existing equipment, such as decentralized layout, large footprint and difficult maintenance, low waste heat utilization rate of single heat exchange structure, unstable waste pressure conversion due to pressure fluctuations, and limited total energy recovery due to the ability to recover only waste heat or waste pressure.
[0009] This utility model provides the following technical solution: a 3.0MW chemical plant reactor waste heat and waste pressure utilization device, including an integrated machine body support frame, a waste heat collection mechanical component, a waste pressure conversion mechanical component, and an energy coupling transmission component, wherein the waste heat collection mechanical component, the waste pressure conversion mechanical component, and the energy coupling transmission component are all bolted to the top of the integrated machine body support frame; The waste heat collection mechanical assembly includes a high-temperature heat exchange tank and a medium-temperature heat exchange tank. Both the high-temperature heat exchange tank and the medium-temperature heat exchange tank are installed on the top of an integrated machine support frame. The surfaces of both the high-temperature heat exchange tank and the medium-temperature heat exchange tank are fitted with spiral heat exchange tube assemblies. Insulation shells are fixedly connected to the outer sides of both the high-temperature heat exchange tank and the medium-temperature heat exchange tank. High-temperature medium and medium-temperature medium are respectively filled between the surfaces of the high-temperature heat exchange tank and the two insulation shells 5, and the high-temperature medium and the medium-temperature medium are respectively matched and correspondingly arranged with the spiral heat exchange tube assemblies. A medium replacement port is opened on the surface of the insulation shell. One side of the high-temperature heat exchange tank is connected to an air inlet for connecting the waste heat steam exhaust pipe of the reactor. The tops of the high-temperature heat exchange tank and the medium-temperature heat exchange tank are connected to the same waste heat pipe. The residual pressure conversion mechanical assembly includes a filter mechanical structure, a multi-stage adjustable turbine, and a pressure stabilizing valve group. The filter mechanical structure and the multi-stage adjustable turbine are installed on the top of the integrated machine support frame. The inlet and outlet of the filter mechanical structure are respectively connected to the medium-temperature heat exchange tank and the multi-stage adjustable turbine. The pressure stabilizing valve group is installed inside the outlet of the multi-stage adjustable turbine. The energy coupling transmission assembly includes a gear reducer and a generator. The input end of the gear reducer is fixedly connected to the main shaft of the multi-stage adjustable turbine via a coupling, and the output end of the gear reducer is connected to the input end of the generator via a coupling.
[0010] The beneficial effects of this utility model are as follows: 1. This utility model integrates the waste heat collection mechanical components (including high-temperature heat exchange tank, medium-temperature heat exchange tank, spiral heat exchange tube assembly, insulation shell, air inlet, and waste heat pipeline), waste pressure conversion mechanical components (including filter mechanical structure, multi-stage adjustable turbine, and pressure stabilizing valve assembly), and energy coupling transmission components (including gear reducer and generator) by bolting them onto the top of an integrated machine support frame. This achieves an integrated layout of the core components of the equipment, significantly reducing the number of pipeline connection nodes in traditional distributed equipment, lowering the risk of leakage, reducing the overall footprint of the equipment, improving site adaptability, and facilitating the overall installation, maintenance, and relocation of the equipment, thus reducing the complexity of on-site construction.
[0011] 2. This utility model uses a high-temperature heat exchange tank to receive waste heat steam from the reactor through an air inlet. It connects to a medium-temperature heat exchange tank via spiral heat exchange tubes fitted on their surfaces, which, in conjunction with the high-temperature and medium-temperature media filled inside, respectively. This achieves staged heat exchange and recovery of the high-temperature waste heat from the reactor, avoiding the problem of insufficient utilization of waste heat at different temperature ranges by a single heat exchange structure and improving waste heat recovery efficiency. Simultaneously, the insulation shells fixed to the outside of the high-temperature and medium-temperature heat exchange tanks effectively reduce heat loss during the heat exchange process, further ensuring the effectiveness of waste heat utilization. After heat exchange, the waste heat gas is discharged in an orderly manner through waste heat pipes, avoiding energy waste and environmental impact caused by disorderly waste heat discharge.
[0012] 3. This utility model pre-treats the pressurized gas discharged from the medium-temperature heat exchange tank through a filtration mechanical structure. The multi-stage adjustable turbine converts the gas pressure energy into mechanical energy. The pressure stabilizing valve group ensures the stability of the outlet pressure of the multi-stage adjustable turbine, avoiding pressure fluctuations from impacting the equipment. The stable outlet pressure prevents sudden changes in the pressure of subsequent pipelines. The energy coupling transmission component regulates the speed of the mechanical energy output by the multi-stage adjustable turbine through a gear reducer, enabling the generator to stably receive power and generate electricity. This forms a complete energy utilization chain of "waste heat recovery - waste pressure conversion - energy generation", converting the waste heat and waste pressure originally wasted in the reactor into usable electrical energy, reducing the energy consumption of chemical plant production, improving energy utilization efficiency, and meeting the industrial demand for energy conservation and consumption reduction.
[0013] 4. This utility model achieves efficient linkage through the clear functions and coordinated cooperation of each component. The staged heat exchange between the high-temperature heat exchange tank and the medium-temperature heat exchange tank, the pressure energy conversion of the multi-stage adjustable turbine, and the energy transmission of the gear reducer and the generator form a highly efficient linkage. Compared with traditional single waste heat utilization or single waste pressure utilization equipment, it can simultaneously recover both waste heat and waste pressure energy from the reactor, realizing comprehensive energy recovery and utilization, further improving the total energy recovery and economic benefits of the equipment. Moreover, all components of the equipment (such as the spiral heat exchange tube assembly, the multi-stage adjustable turbine, the gear reducer, etc.) adopt optimized mechanical structure design to ensure long-term stable operation of the equipment, reduce downtime due to failure, and improve the reliability and service life of the equipment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional perspective view of the structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of a partial cross-section of the structure of this utility model from another angle; Figure 4 This is a three-dimensional schematic diagram showing the corresponding arrangement of the gear reducer, generator, and filter box of this utility model. Figure 5 This is a three-dimensional schematic diagram showing the corresponding arrangement of the stirring motor, stirring shaft, and scraper assembly of this utility model. Figure 6 This utility model Figure 4 Enlarged diagram of point A in the middle.
[0015] In the diagram: 1. Integrated machine support frame; 2. High-temperature heat exchange tank; 3. Medium-temperature heat exchange tank; 4. Spiral heat exchange tube assembly; 5. Insulation shell; 6. Air inlet; 7. Waste heat pipe; 8. Gear reducer; 9. Generator; 10. Stirring motor; 11. Stirring shaft; 12. Scaling blade assembly; 13. Scaling outlet; 14. Collection box; 15. Scaling valve; 16. Temperature and pressure sensor; 17. Filter box; 18. Buffer chamber; 19. Slide plate; 20. Metal mesh; 21. Activated carbon layer; 22. Ceramic filter element; 23. Connecting strip; 24. Multi-stage adjustable turbine. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0017] like Figures 1 to 6 As shown, the waste heat and pressure utilization equipment for the 3.0MW chemical plant reactor in this embodiment includes an integrated body support frame 1, a waste heat collection mechanical component, a waste pressure conversion mechanical component, and an energy coupling transmission component. The integrated body support frame 1 can be a welded steel structure. The waste heat collection mechanical component, the waste pressure conversion mechanical component, and the energy coupling transmission component are all bolted to the top of the integrated body support frame 1. The waste heat collection mechanical assembly includes a high-temperature heat exchange tank 2 and a medium-temperature heat exchange tank 3. Both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are installed on the top of the integrated body support frame 1. The surfaces of both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are fitted with spiral heat exchange tube assemblies 4, which may be made of, but are not limited to, 316L stainless steel. The outer sides of both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are fixedly connected with heat insulation shells 5, which may be made of, but are not limited to, polyurethane foam. The surfaces of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are filled with high-temperature medium and medium-temperature medium, respectively, between the two heat insulation shells 5. The high-temperature medium and the medium-temperature medium are respectively matched and correspondingly set with the spiral heat exchange tube assemblies 4. The surface of the heat insulation shell 5 is provided with a medium replacement port. One side of the high-temperature heat exchange tank 2 is connected to an air inlet 6 for connecting the waste heat steam exhaust pipe of the reactor. The tops of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are connected to the same waste heat pipe 7. The residual pressure conversion mechanical components include a filter mechanical structure, a multi-stage adjustable turbine 24, and a pressure regulating valve group. The filter mechanical structure and the multi-stage adjustable turbine 24 are installed on the top of the integrated machine support frame 1. The inlet and outlet of the filter mechanical structure are connected to the medium-temperature heat exchange tank 3 and the multi-stage adjustable turbine 24, respectively. The pressure regulating valve group is installed inside the outlet of the multi-stage adjustable turbine 24. The energy coupling transmission assembly includes a gear reducer 8 and a generator 9. The input end of the gear reducer 8 is fixedly connected to the main shaft of the multi-stage adjustable turbine 24 via a coupling. The output end of the gear reducer 8 is connected to the input end of the generator 9 via a coupling. The gear reducer 8 adopts helical cylindrical gear transmission. The gear material is 20CrMnTi, and the tooth surface hardness is HRC58-62. The outer shell of the gear reducer 8 is equipped with heat sinks (not shown), and the interior is filled with industrial gear oil (model L-CKC460).
[0018] refer to Figure 2 , Figure 3 and Figure 5 A stirring motor 10 is fixedly connected to the top of both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3. The output end of the stirring motor 10 is fixedly connected to the stirring shaft 11 via a coupling. A polytetrafluoroethylene scraper assembly 12 is fixedly connected to the surface of the stirring shaft 11, and the two scraper assemblies 12 are respectively matched and correspondingly set with the inner walls of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3.
[0019] In this embodiment, the stirring motor 10 drives the stirring shaft 11 to rotate the scraper assembly 12, which can remove impurities and dirt adhering to the inner wall of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 in real time, avoiding the accumulation of dirt from affecting the heat exchange efficiency. At the same time, the scraper assembly 12 made of polytetrafluoroethylene has both high and low temperature resistance and wear resistance, which can adapt to the medium environment inside the tank and extend the service life of the components.
[0020] refer to Figure 2 and Figure 3 Both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are connected to a scale discharge port 13 at the bottom. The bottom of the scale discharge port 13 is connected to a collection box 14. A scale discharge valve 15 is fixedly connected inside the scale discharge port 13.
[0021] In this embodiment, the scale discharge port 13, the collection box 14 and the scale discharge valve 15 are coordinated to allow the scale discharge valve 15 to be opened periodically, so that the dirt removed by the scraper plate assembly 12 falls into the collection box 14 through the scale discharge port 13 for centralized collection and treatment. The scale removal operation can be completed without disassembling the tank, reducing equipment downtime for maintenance and improving operational continuity.
[0022] refer to Figure 2 and Figure 3 Temperature and pressure sensors 16 are fixedly connected to the top of both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3. The probes of the two temperature and pressure sensors 16 extend into the interior of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, respectively. A display is provided on the top of the temperature and pressure sensor 16, and the display is electrically connected to the temperature and pressure sensor 16.
[0023] In this embodiment, the temperature and pressure data inside the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3 are monitored in real time by the temperature and pressure sensor 16 and presented intuitively on the display. This allows operators to keep abreast of the working conditions inside the tanks and take quick adjustment measures when the temperature or pressure exceeds the preset range, so as to avoid the heat exchange effect or safety risks caused by abnormal parameters inside the tanks.
[0024] refer to Figure 4 and Figure 6 The filtration mechanical structure includes a filter box 17. The inlet and outlet of the filter box 17 are connected to the medium-temperature heat exchange tank 3 and the multi-stage adjustable turbine 24, respectively. A buffer chamber 18 is provided inside the filter box 17. Three evenly arranged sliding grooves are provided on the top of the filter box 17. A sliding plate 19 is slidably connected inside the sliding grooves. A metal mesh 20, an activated carbon layer 21, and a ceramic filter element 22 are arranged sequentially inside the three sliding plates 19 from the air inlet to the air outlet.
[0025] In this embodiment, the buffer chamber 18 can buffer the airflow entering the filter box 17 to avoid damage to the filter components caused by airflow impact; at the same time, the metal mesh 20, activated carbon layer 21 and ceramic filter element 22 form a three-stage filtration structure to remove solid impurities, odors and small particles in the airflow in sequence, ensuring the cleanliness of the airflow entering the multi-stage adjustable turbine 24, preventing the impeller inside the turbine from being worn or blocked by impurities, and ensuring the residual pressure conversion efficiency.
[0026] refer to Figure 1 and Figure 6 The top of the filter box 17 is symmetrically hinged with a snap-fit strip 23, and the snap-fit strip 23 is correspondingly set to cooperate with the slide plate 19.
[0027] In this embodiment, by using the engagement strip 23 and the slide plate 19, when the filter components need to be replaced, the engagement strip 23 can be flipped to release the restriction on the slide plate 19, and the slide plate 19 can be pulled out along the slide groove to replace the metal mesh 20, activated carbon layer 21 or ceramic filter element 22. The operation is convenient and quick, which greatly shortens the replacement cycle of filter components and reduces the difficulty of maintenance.
[0028] refer to Figure 1 and Figure 4 The multi-stage adjustable turbine 24 includes a turbine housing, the input end of which is connected to the filter mechanical structure. A support frame is fixedly connected to the inner wall of the turbine housing. A main shaft is rotatably connected to the inside of the support frame via rolling bearings. A three-stage impeller structure is fixedly connected to the surface of the main shaft via splines. The blade area of the three-stage impeller structure decreases sequentially. The three-stage impeller structure can be made of 2Cr13 stainless steel. The impeller blades adopt an adjustable structure. The root of the blade is connected to the impeller hub via a pin. The adjustment angle range of the blades is -15° to +15°. The adjustment of the impeller blades is driven by a hydraulic cylinder.
[0029] This embodiment uses a three-stage decreasing blade area impeller structure to adapt to the process of gradually decreasing airflow pressure, realizing the graded conversion of pressure energy and improving energy utilization. At the same time, the adjustable blades driven by the hydraulic cylinder can adjust the blade angle (-15° to +15°) according to the changes in airflow pressure, so that the impeller is always in the optimal working state. Even if the residual pressure of the reactor fluctuates, it can ensure the stable output of the multi-stage adjustable turbine 24, thereby ensuring the subsequent power generation efficiency.
[0030] refer to Figure 1 and Figure 4 The pressure regulating valve group includes a pilot-operated pressure reducing valve (model Y43H-16C) and a check valve (DN100). Both the pilot-operated pressure reducing valve and the check valve are installed inside the 24 outlets of the multi-stage adjustable turbine via flange connections.
[0031] In this embodiment, the pilot-operated pressure reducing valve can stabilize the pressure of the exhaust gas from the multi-stage adjustable turbine 24 within a preset range, avoiding the impact of exhaust pressure fluctuations on subsequent pipelines or equipment; the one-way valve can prevent external airflow from flowing back into the turbine, avoiding damage to components from the turbine main shaft reversing, and further ensuring the safety and stability of equipment operation.
[0032] Connect the waste heat steam exhaust pipe of the reactor to the air inlet 6 on one side of the high-temperature heat exchange tank 2, ensuring that the waste heat collection mechanical components, waste pressure conversion mechanical components, and energy coupling transmission components on the top of the integrated machine support frame 1 are all securely installed with bolts, and then start the equipment; the high-temperature waste heat steam generated by the reactor enters the interior of the high-temperature heat exchange tank 2 through the air inlet 6. The spiral heat exchange tube groups 4, which are fitted on the surfaces of both the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, exchange heat with the high-temperature medium and the medium-temperature medium filled in the tank, respectively. At the same time, the heat insulation shell 5, which is fixedly connected to the outside of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, can reduce heat loss. The medium replacement port on the surface of the heat insulation shell 5 can be used to periodically replace the medium in the tank. During the heat exchange process, temperature and pressure sensors 16, fixedly connected to the tops of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, monitor the temperature and pressure inside the tanks in real time. The monitoring data is displayed on the top of the temperature and pressure sensors 16, allowing operators to judge the operating conditions based on the data. The waste heat gas generated after heat exchange is discharged through the same waste heat pipe 7 connecting the tops of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3. At the same time, the pressurized gas discharged from the medium-temperature heat exchange tank 3 enters the filter box 17 of the filtration mechanical structure. The pressurized gas generated in the medium-temperature heat exchange tank 3 during the heat exchange process is first buffered by the buffer chamber 18 opened inside the filter box 17, and then passes through the three sliding plates 19 slidably connected in the sliding groove at the top of the filter box 17. A three-stage filtration system, consisting of a metal mesh 20, an activated carbon layer 21, and a ceramic filter element 22 arranged sequentially from the intake to the exhaust end, removes impurities, odors, and fine particles from the gas. A symmetrically hinged locking strip 23 at the top of the filter box 17 secures the slide plate 19, preventing it from sliding during gas flow. To replace the filter components, simply flip the locking strip 23 to remove the slide plate 19. The filtered gas enters the multi-stage adjustable turbine 24 of the residual pressure conversion mechanical component. A support frame fixedly connected to the inner wall of the turbine housing of the multi-stage adjustable turbine 24 rotates via a main shaft connected by rolling bearings. Driven by the gas, this shaft drives a three-stage impeller structure (with progressively decreasing blade areas) whose surfaces are fixedly connected via splines. The blade root is connected to the impeller hub via a pin and can be rotated by a hydraulic cylinder (the angle can be adjusted within the range of -15° to +15°) to realize the conversion of residual pressure energy. At the same time, the pressure stabilizing valve group (including a pilot-operated pressure reducing valve and a check valve) is installed inside the outlet of the multi-stage adjustable turbine 24 via a flange connection. The pilot-operated pressure reducing valve stabilizes the pressure of the discharged airflow within a preset range, and the check valve prevents the external airflow from flowing back. The main shaft of the multi-stage adjustable turbine 24 is fixedly connected to the input end of the gear reducer 8 of the energy coupling transmission component via a coupling. After the gear reducer 8 adjusts the speed, its output end transmits power to the input end of the generator 9 via a coupling to drive the generator 9 to generate electricity.During equipment operation, the stirring motor 10, fixedly connected to the top of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, starts. The output end of the stirring motor 10 drives the PTFE scraper assembly 12, fixedly connected to its surface, to rotate via the stirring shaft 11. The scraper assembly 12 contacts the inner walls of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, removing impurities and dirt adhering to the inner walls. The removed dirt falls through the discharge port 13, which is connected to the bottom of the high-temperature heat exchange tank 2 and the medium-temperature heat exchange tank 3, into the collection box 14 connected to the bottom of the discharge port 13. The discharge valve 15, fixedly connected inside the discharge port 13, controls the timing of discharge. Regularly opening the discharge valve 15 allows for centralized treatment of the dirt in the collection box 14. Throughout the process, all components work together to achieve efficient recovery and utilization of waste heat and pressure from the reactor.
Claims
1. A waste heat and waste pressure utilization device for a 3.0MW chemical plant reactor, characterized in that: The waste heat and pressure utilization equipment of the reactor includes an integrated body support frame (1), a waste heat collection mechanical component, a waste pressure conversion mechanical component and an energy coupling transmission component. The waste heat collection mechanical component, the waste pressure conversion mechanical component and the energy coupling transmission component are all installed on the top of the integrated body support frame (1) by bolts. The waste heat collection mechanical assembly includes a high-temperature heat exchange tank (2) and a medium-temperature heat exchange tank (3). The high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) are both installed on the top of the integrated body support frame (1). The surfaces of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) are fitted with spiral heat exchange tube groups (4). The outer sides of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) are fixedly connected with heat insulation shells (5). The surfaces of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) are respectively filled with high-temperature medium and medium-temperature medium between the two heat insulation shells (5). The high-temperature medium and the medium-temperature medium are respectively matched and correspondingly set with the spiral heat exchange tube groups (4). The surface of the heat insulation shell (5) is provided with a medium replacement port. One side of the high-temperature heat exchange tank (2) is connected to an air inlet (6) for connecting the waste heat steam exhaust pipe of the reactor. The top of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) are connected to the same waste heat pipe (7). The residual pressure conversion mechanical assembly includes a filter mechanical structure, a multi-stage adjustable turbine (24), and a pressure stabilizing valve group. The filter mechanical structure and the multi-stage adjustable turbine (24) are installed on the top of the integrated machine body support frame (1). The inlet and outlet of the filter mechanical structure are respectively connected to the medium temperature heat exchange tank (3) and the multi-stage adjustable turbine (24). The pressure stabilizing valve group is installed inside the outlet of the multi-stage adjustable turbine (24). The energy coupling transmission assembly includes a gear reducer (8) and a generator (9). The input end of the gear reducer (8) is fixedly connected to the main shaft of the multi-stage adjustable turbine (24) via a coupling, and the output end of the gear reducer (8) is connected to the input end of the generator (9) via a coupling.
2. The waste heat and pressure utilization equipment for a 3.0MW chemical plant reactor according to claim 1, characterized in that: The top of both the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) is fixedly connected to a stirring motor (10). The output end of the stirring motor (10) is fixedly connected to a stirring shaft (11) via a coupling. A set of scraper plates (12) made of polytetrafluoroethylene is fixedly connected to the surface of the stirring shaft (11). The two sets of scraper plates (12) are respectively matched with the inner walls of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3).
3. The waste heat and pressure utilization equipment for a 3.0MW chemical plant reactor according to claim 2, characterized in that: The bottom of both the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3) is connected to a scale discharge port (13), the bottom of which is connected to a collection box (14), and a scale discharge valve (15) is fixedly connected inside the scale discharge port (13).
4. The waste heat and pressure utilization equipment for a 3.0MW chemical plant reactor according to claim 3, characterized in that: Temperature and pressure sensors (16) are fixedly connected to the top of both the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3), and the probes of the two temperature and pressure sensors (16) extend into the interior of the high-temperature heat exchange tank (2) and the medium-temperature heat exchange tank (3), respectively. A display is provided on the top of the temperature and pressure sensors (16).
5. A waste heat and pressure utilization device for a 3.0MW chemical plant reactor according to claim 4, characterized in that: The filter mechanical structure includes a filter box (17), the inlet and outlet of which are connected to a medium-temperature heat exchange tank (3) and a multi-stage adjustable turbine (24), respectively. A buffer chamber (18) is provided inside the filter box (17), and three evenly arranged sliding grooves are provided on the top of the filter box (17). A sliding plate (19) is slidably connected inside the sliding groove. A metal mesh (20), an activated carbon layer (21), and a ceramic filter element (22) are arranged sequentially inside the three sliding plates (19) from the air inlet to the air outlet.
6. A waste heat and pressure utilization device for a 3.0MW chemical plant reactor according to claim 5, characterized in that: The top of the filter box (17) is symmetrically hinged with snap-fit strips (23), and the snap-fit strips (23) are correspondingly set to cooperate with the slide plate (19).
7. A waste heat and pressure utilization device for a 3.0MW chemical plant reactor according to claim 6, characterized in that: The multi-stage adjustable turbine (24) includes a turbine housing, the input end of which is connected to a filter mechanical structure. A support frame is fixedly connected to the inner wall of the turbine housing. A main shaft is rotatably connected to the inside of the support frame via a rolling bearing. A three-stage impeller structure is fixedly connected to the surface of the main shaft via a spline. The blade area of the three-stage impeller structure decreases sequentially. The impeller blades adopt an adjustable structure. The blade roots are connected to the impeller hub via pins. The blade adjustment angle range is -15° to +15°. The impeller blade adjustment is driven by a hydraulic cylinder.
8. A waste heat and pressure utilization device for a 3.0MW chemical plant reactor according to claim 7, characterized in that: The pressure regulating valve group includes a pilot-operated pressure reducing valve and a check valve. Both the pilot-operated pressure reducing valve and the check valve are installed inside the outlet of the multi-stage adjustable turbine (24) via flange connections.