Fluidized bed heat exchanger with breakable catalyst particles

Abstract

The utility model discloses a fluidized bed heat exchanger of broken catalytic particle, including the casing, the casing includes the main body shell, and one end fixedly connected with first end shell of main body shell, and the other end fixedly connected with first connecting pipe of first end shell, the other end fixedly connected with second end shell of main body shell, and the other end fixedly connected with second connecting pipe of second end shell, the top fixedly connected with feed pipe of main body shell, and the bottom fixedly connected with discharge pipe of main body shell, and be equipped with heat exchange subassembly in main body shell, the top fixedly connected with tee pipe of feed pipe, and the top fixedly connected with first motor of tee pipe, and the output key connection of first motor has connecting rod. The utility model drives the broken cutter rotation and catalytic particle contact through the rotation of connecting rod under the drive of first motor, and then breaks the catalytic particle of adhesion, thereby improves the fluidity of catalytic particle, and then promotes the heat transfer coefficient.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed heat exchanger technology, and in particular to a fluidized bed heat exchanger that can break down catalytic particles. Background Technology

[0002] During the reaction of catalytic particles, the heat of reaction can be removed from the catalytic particles in a timely manner through a fluidized bed heat exchanger to prevent excessive temperature from causing catalyst deactivation or an increase in side reactions.

[0003] In existing fluidized bed heat exchangers, the catalytic particles tend to agglomerate before entering the heat exchanger, reducing their fluidity and decreasing the heat transfer coefficient. This affects the thermal conversion efficiency of the catalytic particles within the fluidized bed heat exchanger. Therefore, to advance industry technology, better realize the thermal conversion function of catalytic particles within the heat exchanger, and enhance core technological competitiveness, this application proposes a new implementation scheme that differs from the feeding structure and application method of existing fluidized bed heat exchangers. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor thermal conversion effect of existing catalytic particles inside fluidized bed heat exchangers, and to propose a fluidized bed heat exchanger with breakable catalytic particles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fluidized bed heat exchanger for crushable catalytic particles includes a shell, the shell comprising a main shell, a first end shell fixedly connected to one end of the main shell, a first connecting pipe fixedly connected to the other end of the first end shell, a second end shell fixedly connected to the other end of the main shell, a second connecting pipe fixedly connected to the other end of the second end shell, a feed pipe fixedly connected to the top of the main shell, a discharge pipe fixedly connected to the bottom of the main shell, a heat exchange assembly disposed inside the main shell, a tee pipe fixedly connected to the top of the feed pipe, a first motor fixedly connected to the top of the tee pipe, a connecting rod keyed to the output end of the first motor, and a plurality of crushing blades fixedly connected to the bottom end of the connecting rod passing through the tee pipe and the feed pipe.

[0007] Furthermore, a support plate is fixedly connected between the inner circumference of the three-way pipe, and the connecting rod is rotatably inserted into the support plate.

[0008] Furthermore, a first valve body is fixedly connected to one end of the three-way pipe and the bottom end of the discharge pipe.

[0009] Furthermore, a second valve body is fixedly connected to one end of the first connecting pipe and one end of the second connecting pipe.

[0010] Furthermore, a rear support plate is fixedly connected to one end of the inner circumference of the main shell, and a front support ring is fixedly connected to the other end of the inner circumference of the main shell. The heat exchange assembly is disposed between the rear support plate and the front support ring.

[0011] Furthermore, the heat exchange assembly includes a front connecting plate and a rear connecting plate, with multiple heat exchange tubes inserted between the front connecting plate and the rear connecting plate.

[0012] Furthermore, the outer wall of the heat exchange tube is fixedly connected with multiple fins, which have a spiral structure.

[0013] Furthermore, a support frame is fixedly connected to one inner wall of the first end shell, a second motor is fixedly connected to one side of the support frame, and multiple fan blades are fixedly connected to the output end of the second motor.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Driven by the first motor, the connecting rod rotates, thereby causing the crushing blade to rotate and come into contact with the catalytic particles, thus crushing the adhered catalytic particles, thereby improving the fluidity of the catalytic particles and thus increasing the heat transfer coefficient.

[0016] 2. By setting fins on the heat exchange tubes, the exchange area of ​​the catalytic particles is increased, thereby improving the heat transfer efficiency and thus the heat removal efficiency.

[0017] 3. Driven by the second motor, the fan blades rotate, thereby drawing gas from the first connecting pipe into the main body shell. Then, the gas passes through the heat exchange tube and fins to remove its heat. Finally, the gas and heat are discharged from the second connecting pipe, thus preventing the catalytic particle reaction temperature from becoming too high. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a fluidized bed heat exchanger for breakable catalytic particles proposed in this utility model.

[0019] Figure 2 This is a partial cross-sectional structural diagram of a fluidized bed heat exchanger for breakable catalytic particles proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the heat exchange component structure of a fluidized bed heat exchanger for breakable catalytic particles proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the main cross-sectional structure of the shell of a fluidized bed heat exchanger capable of crushing catalytic particles, as proposed in this utility model.

[0022] Figure 5 This is a partial structural diagram of Embodiment 2 of the present invention;

[0023] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention;

[0024] Figure 7 This is a cross-sectional three-dimensional structural diagram of Embodiment 2 of the present invention.

[0025] In the diagram: 1. Shell; 101. Main shell; 102. First end shell; 103. Second end shell; 104. Feed pipe; 105. Discharge pipe; 106. First connecting pipe; 107. Second connecting pipe; 2. Heat exchange assembly; 201. Front connecting plate; 202. Rear connecting plate; 203. Heat exchange tube; 204. Fin; 3. T-pipe; 4. First motor; 5. Connecting rod; 6. Crusher; 7. Support plate; 8. First valve body; 9. Rear support plate; 10. Front support ring; 11. Second valve body; 12. Support frame; 13. Second motor; 14. Fan blade. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] Reference Figures 1-5 A fluidized bed heat exchanger for crushable catalytic particles includes a shell 1, which includes a main shell 101. One end of the main shell 101 is connected to a first end shell 102 via a flange. The other end of the first end shell 102 is welded to a first connecting pipe 106. The other end of the main shell 101 is connected to a second end shell 103 via a flange. The other end of the second end shell 103 is welded to a second connecting pipe 107. One end of the first connecting pipe 106 and one end of the second connecting pipe 107 are both connected to a second valve body 11 via flanges. The second valve body 11 controls the airflow state inside the shell 1.

[0029] A feed pipe 104 is welded to the top of the main body shell 101, and a discharge pipe 105 is welded to the bottom of the main body shell 101. A three-way pipe 3 is connected to the top of the feed pipe 104 through a flange. A first valve body 8 is connected to one end of the three-way pipe 3 and the bottom end of the discharge pipe 105 through a flange. The catalytic particles are put into the three-way pipe 3, and then the catalytic particles fall into the main body shell 101 through the feed pipe 104.

[0030] The top end of the three-way pipe 3 is fixed with a first motor 4 by bolts. The output end of the first motor 4 is connected to a connecting rod 5 by a coupling key. The bottom end of the connecting rod 5 passes through the three-way pipe 3 and the feed pipe 104 and is fixed with multiple crushing blades 6 by bolts. The inner circumference of the three-way pipe 3 is fixed with a support plate 7 by bolts. The connecting rod 5 and the support plate 7 are rotatably inserted. Some of the crushing blades 6 are located inside the feed pipe 104. Driven by the first motor 4, the connecting rod 5 rotates, thereby driving the crushing blades 6 to rotate and contact the catalytic particles that have adhered to each other and formed agglomerates, thereby crushing the adhered catalytic particles and increasing their fluidity.

[0031] One end of the inner circumference of the main shell 101 is connected to a rear support plate 9 via a flange, and the other end of the inner circumference of the main shell 101 is connected to a front support ring 10 via a flange. A sealing ring is provided between the front support ring 10, the rear support plate 9 and the inner circumference of the main shell 101 to make them fit together. A heat exchange assembly 2 is provided inside the main shell 101, and the heat exchange assembly 2 is located between the rear support plate 9 and the front support ring 10.

[0032] The heat exchange assembly 2 includes a front connecting plate 201 and a rear connecting plate 202. Multiple heat exchange tubes 203 are sealed and inserted between the front connecting plate 201 and the rear connecting plate 202. The multiple heat exchange tubes 203 are circularly converged and distributed at the center of the front connecting plate 201 and the rear connecting plate 202. The heat exchange tubes 203 are aluminum metal tubes. Multiple fins 204 are welded to the outer wall of the heat exchange tubes 203. The fins 204 are spiral structures. The increase of fins 204 increases the exchange area of ​​the catalytic particles and improves the heat transfer efficiency.

[0033] The working principle of this embodiment is as follows: When in use, firstly, open the first valve body 8, then put the catalytic particles into the three-way pipe 3, and then the catalytic particles fall into the main body shell 101 through the feed pipe 104. During the falling of the catalytic particles, the first motor 4 is started. Under the drive of the first motor 4, the connecting rod 5 rotates, thereby driving the crushing blade 6 to rotate and contact the catalytic particles, thereby crushing the adhering catalytic particles. Then, the catalytic particles fall into the main body shell 101 to react.

[0034] During the reaction, the second valve body 11 is opened, and the heat generated by the reaction of the catalytic particles is transferred to the heat exchange tube 203 and the fins 204. At this time, the first connecting pipe 106 is connected to an external liquid supply device, and the coolant enters the heat exchange tube 203 from the first connecting pipe 106 and then undergoes heat exchange. Finally, the coolant leaves the heat exchange tube 203 from the second connecting pipe 107 and returns to the coolant storage container, completing the heat exchange.

[0035] Example 2

[0036] In this embodiment, the difference from embodiment 1 is that air cooling is used. A support frame 12 is fixed to one side of the inner wall of the first end shell 102 by bolts. A second motor 13 is fixed to one side of the support frame 12 by bolts. Multiple fan blades 14 are fixed to the output end of the second motor 13 by bolts. The blade length of the fan blades 14 is greater than the distribution radius of the heat exchange tube 203. There is a certain gap between the fan blades 14 and the front support ring 10 to ensure that the air force generated by the fan blades 14 can enter the heat exchange tube 203.

[0037] Driven by the second motor 13, the fan blade 14 rotates, thereby inputting gas from the first connecting pipe 106 into the main body shell 101. Then, the gas passes through the heat exchange pipe 203 and fins 204 to remove the heat from it. Then, the gas and heat are discharged from the second connecting pipe 107, thereby avoiding excessively high reaction temperature of the catalytic particles.

[0038] The working principle of this embodiment is as follows: When in use, firstly, open the first valve body 8, then put the catalytic particles into the three-way pipe 3, and then the catalytic particles fall into the main body shell 101 through the feed pipe 104. During the falling of the catalytic particles, the first motor 4 is started. Under the drive of the first motor 4, the connecting rod 5 rotates, thereby driving the crushing blade 6 to rotate and contact the catalytic particles, thereby crushing the adhering catalytic particles. Then, the catalytic particles fall into the main body shell 101 to react.

[0039] During the reaction, the second valve body 11 is opened, and the heat generated by the reaction of the catalytic particles is transferred to the heat exchange tube 203 and fins 204. Then, driven by the second motor 13, the fan blade 14 rotates, thereby inputting the gas from the first connecting pipe 106 into the main shell 101. Then, the gas passes through the heat exchange tube 203 and fins 204 to remove the heat. Then, the gas and heat are discharged from the second connecting pipe 107, thereby avoiding the reaction temperature of the catalytic particles from getting too high. Finally, the catalytic particles are discharged from the discharge pipe 105.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fluidized bed heat exchanger for crushable catalytic particles, comprising a shell (1), characterized in that, The housing (1) includes a main body shell (101), one end of which is fixedly connected to a first end shell (102), the other end of which is fixedly connected to a first connecting pipe (106), the other end of which is fixedly connected to a second end shell (103), the other end of which is fixedly connected to a second connecting pipe (107), and the top of which is fixedly connected to a feed pipe (107). 4) A discharge pipe (105) is fixedly connected to the bottom of the main shell (101). A heat exchange assembly (2) is provided inside the main shell (101). A three-way pipe (3) is fixedly connected to the top of the feed pipe (104). A first motor (4) is fixedly connected to the top of the three-way pipe (3). A connecting rod (5) is keyed to the output end of the first motor (4). A plurality of crushing blades (6) are fixedly connected to the bottom end of the connecting rod (5) through the three-way pipe (3) and the feed pipe (104).

2. The fluidized bed heat exchanger for breakable catalytic particles according to claim 1, characterized in that, A support plate (7) is fixedly connected between the inner circumference of the three-way pipe (3), and the connecting rod (5) is rotatably inserted into the support plate (7).

3. A fluidized bed heat exchanger for breakable catalytic particles according to claim 1, characterized in that, The first valve body (8) is fixedly connected to one end of the three-way pipe (3) and the bottom end of the discharge pipe (105).

4. A fluidized bed heat exchanger for breakable catalytic particles according to claim 1, characterized in that, A second valve body (11) is fixedly connected to one end of the first connecting pipe (106) and one end of the second connecting pipe (107).

5. A fluidized bed heat exchanger for breakable catalytic particles according to claim 1, characterized in that, A rear support plate (9) is fixedly connected to one end of the inner circumference of the main body shell (101), and a front support ring (10) is fixedly connected to the other end of the inner circumference of the main body shell (101). The heat exchange assembly (2) is disposed between the rear support plate (9) and the front support ring (10).

6. A fluidized bed heat exchanger for breakable catalytic particles according to claim 5, characterized in that, The heat exchange assembly (2) includes a front connecting plate (201) and a rear connecting plate (202), and a plurality of heat exchange tubes (203) are inserted between the front connecting plate (201) and the rear connecting plate (202).

7. A fluidized bed heat exchanger for breakable catalytic particles according to claim 6, characterized in that, The outer wall of the heat exchange tube (203) is fixedly connected with multiple fins (204), and the fins (204) have a spiral structure.

8. A fluidized bed heat exchanger for breakable catalytic particles according to claim 1, characterized in that, A support frame (12) is fixedly connected to one side of the inner wall of the first end shell (102), and a second motor (13) is fixedly connected to one side of the support frame (12). Multiple fan blades (14) are fixedly connected to the output end of the second motor (13).

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