Industrial plant zero-carbon oriented energy waste heat recycling equipment

Abstract

The utility model relates to the technical field of energy waste heat recovery, specifically is a kind of industrial factory zero carbon oriented energy waste heat recovery and utilization equipment, including reaction furnace, still including fixed installation in the exhaust pipe of reaction furnace top end, fixed installation in the main pipeline of exhaust pipe end part, fixed installation in the heat exchange box of main pipeline outside, the heat exchange cavity being opened in the heat exchange box, fixed installation in the water inlet pipe of heat exchange box bottom end outer wall and fixed installation in the water outlet pipe of heat exchange box top end, the inside of heat exchange cavity is provided with guide module.The utility model has the beneficial effect that by guide module, the retention time of waste gas in heat exchange cavity can be moderately extended, and the heat exchange efficiency is improved;When the system detects that the air pressure is abnormally high, the opening can be automatically adjusted, the main airflow passage is expanded, so as to rapidly release pressure, ensure that the reaction furnace always operates within the safe pressure range, which improves the waste heat recovery efficiency while fundamentally eliminates the safety hazards caused by poor exhaust.

Description

Technical Field

[0001] This utility model relates to the field of energy waste heat recovery technology, specifically a zero-carbon oriented energy waste heat recovery and utilization device for industrial plants. Background Technology

[0002] Integrated energy utilization systems in industrial plants typically encompass multiple aspects to improve energy efficiency, reduce operating costs, and minimize environmental impact. By recovering and utilizing waste heat, energy consumption can be significantly reduced, thereby lowering carbon emissions from industrial plants and achieving efficient energy utilization.

[0003] In existing waste heat recovery systems, exhaust gases from equipment such as reactors undergo heat exchange in a heat conversion chamber to lower their temperature and allow for heat recovery. However, to improve heat exchange efficiency, retention components are typically added to the heat exchange pipes to reduce airflow. This restriction, however, indirectly increases pressure within the reactor chamber, potentially posing safety hazards. Therefore, we propose a zero-carbon-oriented waste heat recovery system for industrial plants. Utility Model Content

[0004] The purpose of this invention is to provide a zero-carbon-oriented waste heat recovery and utilization device for industrial plants to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a zero-carbon guided waste heat recovery and utilization equipment for industrial plants, including a reactor, an exhaust pipe fixedly installed at the top of the reactor, a main pipe fixedly installed at the end of the exhaust pipe, a heat exchange box fixedly installed outside the main pipe, a heat exchange cavity opened inside the heat exchange box, a water inlet pipe fixedly installed on the outer wall of the bottom end of the heat exchange box, and a water outlet pipe fixedly installed at the top of the heat exchange box. A guiding module is provided inside the heat exchange cavity. The guiding module includes a U-shaped pipe. The top end of the U-shaped pipe is fixedly connected to the main pipe through a tee pipe. A branch pipe is fixedly connected to the bottom end of the U-shaped pipe. A rotating rod is rotatably installed through the inner wall of the main pipe. An arc-shaped plate is fixedly installed through the center of the rotating rod. A coil spring is sleeved on the outer wall of the end of the rotating rod.

[0006] Preferably, the arc-shaped plate is disposed at the top of the connection between the U-shaped pipe and the main pipe, and the arc-shaped opening of the arc-shaped plate faces one side of the U-shaped pipe.

[0007] Preferably, the lower surface of the arc-shaped plate is provided with an arc-shaped groove, and small arc-shaped plates with arc-shaped openings opposite to the arc-shaped groove are provided on the front and rear sides of the arc-shaped plate.

[0008] Preferably, the rotating rod is rotatably connected to the inner wall of the main pipeline and the heat exchange box using a rotating sealing structure.

[0009] Preferably, the heat exchange box has a sealing sleeve fixedly installed on the front and rear outer walls, the inner wall of the end of the sealing sleeve is rotatably connected to the end of the rotating rod, and the two ends of the coil spring are fixedly connected to the inner wall of the sealing sleeve and the outer wall of the rotating rod, respectively.

[0010] Preferably, a fan impeller is installed through and fixedly mounted on the outer wall of the rotating rod, and the number of fan impellers is set to two sets, which are arranged in a mirror image on the front and rear sides of the main pipe.

[0011] Preferably, the blades of the fan impeller are inclined on the side away from the center of the main pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the zero-carbon guided energy waste heat recovery and utilization equipment in this industrial plant can appropriately extend the residence time of waste gas in the heat exchange chamber through the guiding module, thereby improving the heat exchange efficiency; when the system detects an abnormal increase in gas pressure, it can automatically adjust the opening and expand the main airflow channel, thereby quickly depressurizing and ensuring that the reactor always operates within the safe pressure range. This feature not only improves the waste heat recovery efficiency, but also fundamentally eliminates the safety hazards caused by poor exhaust.

[0013] Secondly, the impeller, through its continuous oscillation, exerts a powerful agitation on the water in the heat exchange chamber. This agitation effectively breaks up the water temperature stratification, promotes the mixing of hot and cold water, and makes the water temperature in the entire heat exchange chamber more uniform. At the same time, the agitation also strengthens the convection between the water flow and the heat exchange pipe wall, thins the thermal boundary layer, and thus greatly improves the rate and efficiency of heat exchange. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the heat exchanger box of this utility model;

[0016] Figure 3 This is a cross-sectional view of the main pipeline of this utility model;

[0017] Figure 4 This is a schematic diagram of the guide module of this utility model.

[0018] The components represented by each number in the attached diagram are listed below: 1. Reactor; 2. Exhaust pipe; 3. Main pipe; 4. Heat exchange box; 5. Heat exchange cavity; 6. Water inlet pipe; 7. Water outlet pipe; 8. U-shaped pipe; 9. Branch pipe; 10. Rotating rod; 11. Sealing sleeve; 12. Coil spring; 13. Arc plate; 14. Arc groove; 15. Fan impeller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides a technical solution: such as Figures 1-4 The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants shown includes a reactor 1, an exhaust pipe 2 fixedly installed at the top of the reactor 1, a main pipe 3 fixedly installed at the end of the exhaust pipe 2, a heat exchange box 4 fixedly installed on the outside of the main pipe 3, a heat exchange chamber 5 opened in the heat exchange box 4, a water inlet pipe 6 fixedly installed on the bottom outer wall of the heat exchange box 4, and a water outlet pipe 7 fixedly installed at the top of the heat exchange box 4.

[0021] A feed pipe is provided on the side of the reactor 1 to feed industrial raw materials into the reactor 1 for processing. A slag discharge valve is provided at the bottom of the reactor 1 to discharge the residue after the chemical reaction. At the same time, the exhaust pipe 2 is used to discharge the waste gas from the top of the chemical reaction and exchange heat through the main pipe 3 to recover and reuse the heat in the waste gas, reduce carbon emissions and improve energy efficiency. Specifically, the water inlet pipe 6 and the water outlet pipe 7 are connected to the output ends of the water supply pump and the water pump, respectively, to transport the heat exchanged hot water to the outside to realize the recovery and transfer of heat energy for industrial use.

[0022] The heat exchange chamber 5 is equipped with a guide module, which includes a U-shaped tube 8. The top end of the U-shaped tube 8 is fixedly connected to the main pipe 3 through a tee pipe, and the bottom end of the U-shaped tube 8 is fixedly connected to a branch pipe 9. A rotating rod 10 is installed through and rotatably on the inner wall of the main pipe 3. An arc plate 13 is installed through and fixedly on the center of the rotating rod 10, and a coil spring 12 is sleeved on the outer wall of the end of the rotating rod 10.

[0023] A three-way pipe is installed at the center of the heat exchange chamber 5 in the main pipe 3, so that a part of the exhaust gas flowing in the main pipe 3 is diverted into the branch pipe 9, thereby increasing the contact efficiency between exhaust gas and water in the heat exchange chamber 5 and avoiding gas path blockage in the local pipe.

[0024] The arc-shaped plate 13 is set at the top of the connection between the U-shaped pipe 8 and the main pipe 3, and the arc-shaped opening of the arc-shaped plate 13 faces the side of the U-shaped pipe 8.

[0025] Under normal conditions, influenced by gravity, the arc plate 13 drives the rotating rod 10 to rotate clockwise around the axis of the main pipe 3. At this time, the arc plate 13 provides a certain shielding effect on the internal airflow channel of the main pipe 3. The waste gas flowing through the main pipe 3 will flow into the branch pipe 9 under the guidance of the arc plate 13, prolonging the residence time of the waste gas in the heat exchange chamber 5 and improving the waste heat recovery efficiency. However, if the waste gas flow rate is slow and the gas pressure in the reactor 1 increases, the gas pressure on the side of the main pipe 3 near the reactor 1 will increase due to the influence of the gas pressure. This forces the arc plate 13 to rotate counterclockwise around the rotating rod 10 as the rotation center, so as to reduce the blocking area of ​​the arc plate 13 on the airflow channel of the main pipe 3, so as to appropriately reduce the gas pressure and ensure the normal operation of the entire waste heat recovery system.

[0026] The lower surface of the arc plate 13 is provided with an arc groove 14, and small arc plates with arc openings opposite to the arc groove 14 are provided on the front and rear sides of the arc plate 13.

[0027] The design of the arc groove 14 guides the exhaust gas flowing in the main pipe 3 downward into the branch pipe 9. At the same time, the design of the small arc plates on both sides of the arc plate 13 reduces the direct interception resistance of the arc plate 13 to the airflow. Therefore, during the continuous discharge of exhaust gas, it will not cause a large instantaneous impact on the arc plate 13, causing the arc plate 13 to swing significantly in the main pipe 3, thereby posing a risk of impacting the inner wall of the main pipe 3.

[0028] The rotating rod 10 is rotatably connected to the inner walls of the main pipe 3 and the heat exchange box 4 using a rotating sealing structure.

[0029] Please see Figures 2-3 The rotating seal between the rotating rod 10 and the main pipe 3 and the heat exchange box 4 is used to prevent leakage of the hot water in the heat exchange chamber 5, and at the same time, it can ensure the airtightness of the main pipe 3 and prevent the leakage of waste gas from affecting the normal operation of the waste heat recovery system.

[0030] A sealing sleeve 11 is fixedly installed on the outer walls of the front and rear sides of the heat exchange box 4. The inner wall of the end of the sealing sleeve 11 is rotatably connected to the end of the rotating rod 10. The two ends of the coil spring 12 are fixedly connected to the inner wall of the sealing sleeve 11 and the outer wall of the rotating rod 10, respectively.

[0031] The closed sleeve 11 can limit the position of the rotating rod 10, and at the same time protect the end of the rotating rod 10 from external interference and danger during operation. With the setting of the coil spring 12, the coil spring 12 will store force during the rotation of the rotating rod 10, so that the rotating rod 10 always has the tendency to rotate in the opposite direction to achieve reset, driving the arc plate 13 back to the normal airflow guiding position.

[0032] The outer wall of the rotating rod 10 is penetrated and fixedly installed with a fan impeller 15. There are two sets of fan impellers 15, and the two sets of fan impellers 15 are mirror images of each other on the front and rear sides of the main pipe 3.

[0033] With the fan impeller 15 in place, during the exhaust process, due to the influence of airflow and the elasticity of the coil spring 12, the arc plate 13 will swing slightly around the rotating rod 10 as the rotation center, thereby driving the fan impeller 15 to swing back and forth in the heat exchange water in the heat exchange chamber 5, thereby promoting the relative flow of the heat exchange water in the heat exchange chamber 5 and improving the heat exchange efficiency between the heat exchange water and the main pipe 3, the U-shaped pipe 8 and the branch pipe 9.

[0034] The blades of the impeller 15 are inclined on one side away from the center of the main pipe 3.

[0035] By using multiple sets of inclined blades, the hot water in the heat exchange chamber 5 can be turbulent in the horizontal direction while the impeller 15 is rotating continuously, so that the temperature of the hot water in the heat exchange chamber 5 is in a relatively balanced state, thereby improving the efficiency of heat energy recovery and utilization in chemical production.

[0036] Working principle: The exhaust gas generated by the reactor 1 enters the main pipe 3 through the exhaust pipe 2 at the top. In the main pipe 3, the exhaust gas first impacts the arc-shaped plate 13, which is fixed to the rotating rod 10. Its arc-shaped opening faces the U-shaped tube 8. Under normal exhaust gas flow, the arc-shaped plate 13 obstructs the airflow under the action of gravity, guiding part of the exhaust gas through the three-way pipe into the U-shaped tube 8 and the branch pipe 9, thereby prolonging the residence time of the exhaust gas in the heat exchange chamber 5. At the same time, low-temperature water enters the heat exchange chamber 5 of the heat exchange box 4 from the inlet pipe 6, and flows through the main pipe 3, U-shaped tube 8 and branch pipe. The hot waste gas in the reactor 9 undergoes heat exchange, and the high-temperature water after absorbing heat is discharged from the top water outlet pipe 7, realizing waste heat recovery. When the gas pressure in the reactor 1 increases due to poor waste gas discharge, the increased airflow pressure will push the arc plate 13 to overcome the torque of the coil spring 12 and drive the rotating rod 10 to rotate counterclockwise, thereby reducing the obstruction area of ​​the main pipe 3, increasing the airflow of the main passage, and playing the role of automatic pressure relief and system stabilization. In addition, the fan impeller 15 fixed on the rotating rod 10 is stirred back and forth in the water in the heat exchange chamber 5 with the swing of the arc plate 13, promoting uniform water temperature and improving the overall heat exchange efficiency.

[0037] It should be noted that, in this document, relational 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 such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zero-carbon oriented waste heat recovery and utilization equipment for industrial plants, comprising a reactor (1), and further comprising an exhaust pipe (2) fixedly installed at the top of the reactor (1), a main pipe (3) fixedly installed at the end of the exhaust pipe (2), a heat exchange box (4) fixedly installed outside the main pipe (3), a heat exchange chamber (5) opened in the heat exchange box (4), a water inlet pipe (6) fixedly installed on the outer wall of the bottom end of the heat exchange box (4), and a water outlet pipe (7) fixedly installed at the top of the heat exchange box (4), characterized in that: The heat exchange chamber (5) is provided with a guide module, which includes a U-shaped tube (8). The top end of the U-shaped tube (8) is fixedly connected to the main pipe (3) through a tee pipe. The bottom end of the U-shaped tube (8) is fixedly connected to a branch pipe (9). A rotating rod (10) is installed through and rotatably on the inner wall of the main pipe (3). An arc plate (13) is installed through and fixedly on the center of the rotating rod (10). A coil spring (12) is sleeved on the outer wall of the end of the rotating rod (10).

2. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 1, characterized in that: The arc plate (13) is set at the top of the connection between the U-shaped pipe (8) and the main pipe (3), and the arc opening of the arc plate (13) faces the side of the U-shaped pipe (8).

3. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 1, characterized in that: The lower surface of the arc plate (13) is provided with an arc groove (14), and small arc plates with arc openings opposite to the arc groove (14) are provided on the front and rear sides of the arc plate (13).

4. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 1, characterized in that: The rotating rod (10) is rotatably connected to the inner wall of the main pipe (3) and the heat exchange box (4) by a rotating sealing structure.

5. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 1, characterized in that: The heat exchange box (4) has a closed sleeve (11) fixedly installed on the outer walls of the front and rear sides. The inner wall of the end of the closed sleeve (11) is rotatably connected to the end of the rotating rod (10). The two ends of the coil spring (12) are fixedly connected to the inner wall of the closed sleeve (11) and the outer wall of the rotating rod (10), respectively.

6. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 1, characterized in that: The outer wall of the rotating rod (10) is penetrated and fixedly installed with a fan impeller (15). There are two sets of fan impellers (15), and the two sets of fan impellers (15) are mirror images of each other on the front and rear sides of the main pipe (3).

7. The zero-carbon oriented waste heat recovery and utilization equipment for industrial plants according to claim 6, characterized in that: The blades of the impeller (15) are inclined on the side away from the center of the main pipe (3).

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