Chemical reactor with waste heat recovery function

Abstract

This utility model provides a chemical reactor with waste heat recovery function, including a reactor, a stirring device installed inside the reactor, and a waste heat recovery device installed outside the reactor. The stirring device includes a rotating shaft and multiple sets of stirring rods. The multiple sets of stirring rods are connected to the rotating shaft through a detachable structure. The detachable structure includes an mounting groove equally spaced at the top of the rotating shaft, and a mounting block matching the mounting groove is provided on one side of each set of stirring rods. A limiting plate is rotatably fitted on the outer wall of the top of the rotating shaft. The detachable design of the stirring rods in this utility model improves maintenance convenience: through the cooperation of the mounting groove, mounting block, limiting plate, and disassembly groove, the stirring rods can be quickly disassembled and assembled from the rotating shaft. When it is necessary to replace different types (such as turbine type, paddle type) of stirring rods or to perform maintenance, the disassembly groove can be aligned with the mounting groove by rotating the limiting plate, making it easy to remove or install the stirring rods, reducing the complexity of maintenance operations.

Description

Technical Field

[0001] This utility model belongs to the technical field of reaction vessel equipment, and more specifically, it relates to a chemical reaction vessel with waste heat recovery function. Background Technology

[0002] In a broad sense, a reaction vessel is a container that carries out physical or chemical reactions. Through structural design and parameter configuration of the container, the heating, evaporation, cooling, and low-to-high-speed mixing functions required by the process can be achieved. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries.

[0003] A Chinese patent, application number CN202422002852.6, discloses a chemical reactor for chemical raw materials. This utility model provides a chemical reactor for chemical raw materials, relating to the field of reactor technology. It includes: a vertically arranged drive shaft rotatably mounted through the central part of the top cover, the drive shaft extending into the interior of the reactor; two rings of positioning short columns welded vertically around the drive shaft; and three stirring components mounted around the drive shaft. Each stirring component is composed of a U-shaped support frame and an arc-shaped clamping plate welded to the opening of the U-shaped support frame. The arc-shaped clamping plate has a long strip structure, with its upper and lower ends corresponding to two of the vertically corresponding positioning short columns in the two rings, and the arc-shaped clamping plate also engages with the drive shaft. The three stirring components are slidably detachable, which, compared to the prior art of directly welding the stirring components onto the stirring shaft, facilitates individual disassembly and replacement after corrosion or damage. Although the aforementioned utility model achieves the disassembly and installation of the stirring components, the disassembly and installation process still requires the cooperation of multiple components, making it relatively complex.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a chemical reactor with waste heat recovery function, in order to achieve a more practical value. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a chemical reaction vessel with waste heat recovery function, which is achieved by the following specific technical means:

[0006] A chemical reactor with waste heat recovery function includes a reactor, a stirring device installed inside the reactor, and a waste heat recovery device installed outside the reactor. The stirring device includes a rotating shaft and multiple sets of stirring rods. The multiple sets of stirring rods are connected to the rotating shaft through a detachable structure. The detachable structure includes an mounting groove that is equiangularly opened at the top of the rotating shaft. Each side of the multiple sets of stirring rods is provided with a mounting block that matches the mounting groove. A limiting plate is rotatably fitted on the outer wall of the top of the rotating shaft. Multiple sets of disassembly grooves that match the mounting groove are equiangularly opened at the top of the limiting plate.

[0007] Preferably, the waste heat recovery device includes a waste heat box and a water collection box installed outside the reactor. The waste heat box and the water collection box are connected by a water supply pipe. Both ends of the water supply pipe are located inside the water collection box and are respectively connected to a water suction pump and a water supply pump. The two sides of the waste heat box are respectively connected to the inside of the reactor through a suction pipe and a gas supply pipe. The inside of the waste heat box is connected to a suction fan and a blower, which are respectively connected to the suction pipe and the gas supply pipe.

[0008] Preferably, a torsion spring is fitted on the outer wall of the top end of the rotating shaft, and the two ends of the torsion spring are fixedly connected to the outer wall of the rotating shaft and the top side of the limiting plate, respectively.

[0009] Preferably, the top outer wall of the rotating shaft is provided with an annular groove, and the inner side of the limiting plate is provided with a flange that matches the annular groove. The limiting plate is rotatably mounted on the top outer wall of the rotating shaft through the flange, and its bottom side abuts against the top side of the mounting block.

[0010] Preferably, there are three sets of stirring rods, disassembly slots and installation slots, and they are distributed at 120° to each other.

[0011] Preferably, the inner wall of the water supply pipe is provided with a spiral guide vane, which extends along the axial direction of the water supply pipe to prolong the flow path of the water in the water supply pipe and enhance the heat exchange efficiency with the waste heat box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The detachable design of the stirring rod in this utility model improves the convenience of maintenance: Through the cooperation of the mounting groove, mounting block, limiting plate and disassembly groove, the stirring rod and the rotating shaft can be quickly disassembled and assembled. When it is necessary to replace different types (such as turbine type, paddle type) of stirring rod or to perform maintenance, the disassembly groove can be aligned with the mounting groove by rotating the limiting plate, and the stirring rod can be easily taken out or installed, reducing the complexity of maintenance operations.

[0014] 2. The waste heat recovery efficiency of this utility model is optimized: The waste heat recovery device introduces the high-temperature gas in the reactor into the waste heat box through the suction pipe and the gas delivery pipe, and exchanges heat with the water in the water delivery pipe; the spiral guide vanes on the inner wall of the water delivery pipe extend the water flow path, increase the heat exchange contact time, significantly improve the waste heat recovery efficiency, realize the recycling of energy, and reduce the energy consumption cost of chemical production. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0016] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0017] Figure 3 This is a partial cross-sectional schematic diagram of the present invention.

[0018] Figure 4 This is an enlarged schematic diagram of the internal structure of the reaction vessel of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Reactor; 2. Rotating shaft; 3. Stirring rod; 4. Limiting plate; 5. Torsion spring; 6. Disassembly groove; 7. Installation groove; 8. Mounting block; 9. Waste heat box; 10. Water collection box; 11. Water supply pipe; 12. Air intake pipe; 13. Gas supply pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a chemical reactor with waste heat recovery function, including a reactor 1, a stirring device installed inside the reactor 1, and a waste heat recovery device installed outside the reactor 1. The stirring device includes a rotating shaft 2 and multiple sets of stirring rods 3. The multiple sets of stirring rods 3 are connected to the rotating shaft 2 through a detachable structure. The detachable structure includes an installation groove 7 that is equiangularly opened at the top of the rotating shaft 2. Each side of the multiple sets of stirring rods 3 is provided with a mounting block 8 that matches the installation groove 7. A limiting plate 4 is rotatably mounted on the outer wall of the top of the rotating shaft 2. Multiple sets of disassembly grooves 6 that match the installation groove 7 are equiangularly opened at the top of the limiting plate 4.

[0025] The waste heat recovery device includes a waste heat box 9 and a water collection tank 10 installed outside the reactor 1. The waste heat box 9 and the water collection tank 10 are connected by a water supply pipe 11. Both ends of the water supply pipe 11 are located inside the water collection tank 10 and are respectively connected to a suction pump and a delivery pump. The two sides of the waste heat box 9 are connected to the inside of the reactor 1 through a suction pipe 12 and a delivery pipe 13. The inside of the waste heat box 9 is connected to a suction fan and a blower, which are connected to the suction pipe 12 and the delivery pipe 13. The high-temperature gas in the reactor 1 is introduced into the waste heat box 9 through the suction pipe 12 and the delivery pipe 13. With the help of the suction pump and the delivery pump, the water in the water collection tank 10 is driven to circulate in the water supply pipe 11, realizing the effective recovery of waste heat from the reactor 1. The high-temperature gas and the water exchange heat in the waste heat box 9. The heated water can be recycled for preheating reaction raw materials or other process steps, which significantly reduces the energy consumption cost of chemical production and improves energy utilization.

[0026] Among them, a torsion spring 5 is fitted on the outer wall of the top of the rotating shaft 2. The two ends of the torsion spring 5 are fixedly connected to the outer wall of the rotating shaft 2 and the top side of the limiting plate 4, respectively. The elastic restoring effect of the torsion spring 5 keeps the limiting plate 4 in a tight state against the top side of the mounting block 8, preventing the stirring rod 3 from loosening and falling off due to vibration or centrifugal force during high-speed rotation, thus enhancing the structural stability of the stirring device and ensuring the safety of equipment operation.

[0027] The rotating shaft 2 has an annular groove on its top outer wall, and the limiting disk 4 has a flange that matches the annular groove on its inner side. The limiting disk 4 is rotatably mounted on the top outer wall of the rotating shaft 2 via the flange, and its bottom side abuts against the top side of the mounting block 8. The annular groove at the top of the rotating shaft 2 and the flange on the inner side of the limiting disk 4 are slidably connected, which allows the limiting disk 4 to rotate flexibly to facilitate the disassembly of the stirring rod 3, while also limiting the axial displacement of the limiting disk 4 to ensure its tight contact with the mounting block 8, thereby improving the reliability of the installation of the stirring rod 3 and the convenience of the disassembly operation.

[0028] Among them, there are three sets of stirring rods 3, disassembly grooves 6 and installation grooves 7, and they are distributed at 120° to each other.

[0029] The inner wall of the water supply pipe 11 is provided with a spiral guide vane. The spiral guide vane extends along the axial direction of the water supply pipe 11 to extend the flow path of the water in the water supply pipe 11 and enhance the heat exchange efficiency with the waste heat box 9. The spiral guide vane extends along the axial direction of the water supply pipe 11, which increases the contact time between the water flow and the waste heat box 9, strengthens the heat exchange process, and enables the water flow to absorb the heat in the waste heat box 9 more fully, thereby further improving the waste heat recovery efficiency.

[0030] Working principle of this embodiment: Working principle of the stirring device: The rotating shaft 2 is driven to rotate by the drive mechanism, and the multiple sets of stirring rods 3 connected by the detachable structure rotate synchronously to mix and stir the materials in the reactor 1, thereby improving the mass transfer efficiency.

[0031] Detachable structure operation: During installation, rotate the limiting plate 4 to align the disassembly groove 6 and the installation groove 7 of the limiting plate 4. Then, insert the installation block 8 of the stirring rod 3 into the installation groove 7 at the top of the rotating shaft 2. The limiting plate 4 will then automatically reset under the action of the torsion spring 5, and its bottom side will abut against the top side of the installation block 8 to fix the stirring rod 3. During disassembly, rotate the limiting plate 4 to align the disassembly groove 6 with the installation groove 7, and the stirring rod 3 can be easily removed.

[0032] Waste heat recovery device operation: The high-temperature gas generated by the reaction in the reactor 1 is drawn into the waste heat box 9 by the suction fan through the suction pipe 12. At the same time, the cold water in the water collection tank 10 is pumped into the water delivery pipe 11 by the suction pump. Under the guidance of the spiral guide vane, the flow path is extended, and the water is heated after full heat exchange with the high-temperature gas in the waste heat box 9. The heated water is returned to the water collection tank 10 for recycling through the water delivery pump, thus realizing waste heat recovery. The gas after heat exchange is discharged by the blower through the gas delivery pipe 13.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A chemical reactor with waste heat recovery function, comprising a reactor (1), a stirring device disposed inside the reactor (1), and a waste heat recovery device disposed outside the reactor (1), characterized in that: The stirring device includes a rotating shaft (2) and multiple sets of stirring rods (3). The multiple sets of stirring rods (3) are connected to the rotating shaft (2) through a detachable structure. The detachable structure includes an installation groove (7) that is opened at an equal angle at the top of the rotating shaft (2). Each of the multiple sets of stirring rods (3) is provided with a mounting block (8) that matches the installation groove (7) on one side. A limiting plate (4) is rotatably fitted on the outer wall of the top of the rotating shaft (2). Multiple sets of disassembly grooves (6) that match the installation groove (7) are opened at an equal angle at the top of the limiting plate (4).

2. The chemical reactor with waste heat recovery function according to claim 1, characterized in that: The waste heat recovery device includes a waste heat box (9) and a water collection box (10) installed outside the reactor (1). The waste heat box (9) and the water collection box (10) are connected by a water supply pipe (11). Both ends of the water supply pipe (11) are located inside the water collection box (10) and are respectively connected to a water suction pump and a water supply pump. The two sides of the waste heat box (9) are respectively connected to the inside of the reactor (1) through a suction pipe (12) and a gas supply pipe (13). The inside of the waste heat box (9) is connected to a suction fan and a blower, which are respectively connected to the suction pipe (12) and the gas supply pipe (13).

3. The chemical reactor with waste heat recovery function according to claim 1, characterized in that: A torsion spring (5) is fitted on the outer wall of the top of the rotating shaft (2), and the two ends of the torsion spring (5) are fixedly connected to the outer wall of the rotating shaft (2) and the top side of the limiting plate (4), respectively.

4. The chemical reactor with waste heat recovery function according to claim 1, characterized in that: The top outer wall of the rotating shaft (2) is provided with an annular groove, and the inner side of the limiting plate (4) is provided with a flange that matches the annular groove. The limiting plate (4) is rotatably mounted on the top outer wall of the rotating shaft (2) through the flange, and its bottom side abuts against the top side of the mounting block (8).

5. The chemical reactor with waste heat recovery function according to claim 1, characterized in that: The stirring rod (3), disassembly groove (6) and installation groove (7) are all in three groups, and are distributed at 120° to each other.

6. The chemical reactor with waste heat recovery function according to claim 2, characterized in that: The inner wall of the water supply pipe (11) is provided with a spiral guide plate, which extends along the axial direction of the water supply pipe (11) to extend the flow path of the water in the water supply pipe (11) and enhance the heat exchange efficiency with the waste heat box (9).

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