Heat energy recovery system of fluidized bed

Abstract

The utility model discloses a heat energy recovery system of fluidized bed, including fluidized bed main part, cyclone separator, fan and air inlet cabinet, fluidized bed main part is equipped with air outlet and air inlet, air outlet is connected with cyclone separator, air inlet is connected with air inlet cabinet, cyclone separator is connected with fan, air inlet cabinet is connected with air inlet cabinet, air inlet cabinet is connected with air inlet cabinet. The fan is connected with the air inlet cabinet, and an air supplementing opening is formed in the air inlet cabinet. According to the utility model, the tail gas exhausted by the fluidized bed main body can be subjected to gas-solid separation through the cyclone separator, so that particles such as materials contained in the tail gas can be separated from the gas, the particles such as the materials can be collected, and the residual gas can be conveyed into the air inlet cabinet through the fan to be stored; and the gas can be conveyed into the fluidized bed main body for use when needed, and can be applied to the fluidized bed again if the gas contains heat, so that the waste of energy and the pollution to the environment are reduced.

Description

Technical Field

[0001] The utility model relates to the field of fluidized bed design, in particular to a heat energy recovery system for a fluidized bed. Background Art

[0002] A fluidized bed is a reactor that makes a solid bed present a fluidized state through a gas or liquid flow. It can make the material particles in the bed layer move violently by the flow of gas or liquid through the bed layer, and the materials can react better in this state. The fluidized bed has the advantages of fast reaction speed, good mass transfer performance, not easy to accumulate, easy to control, etc., and is widely used in the fields of chemical industry, environmental protection, energy, etc.

[0003] During the working process of the fluidized bed, a certain amount of tail gas is usually generated. However, it is found in actual processing that since the fluidized bed is used to process granular materials, the tail gas generated by the fluidized bed often contains more dust. And sometimes the fluidized bed needs the materials to be in a high-temperature environment, which makes the tail gas sometimes carry more heat when discharged. Directly discharging the tail gas to the outside will, on the one hand, cause environmental pollution due to the dust carried in the tail gas, and on the other hand, the heat contained in the tail gas will also be discharged, resulting in more energy waste. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a heat energy recovery system for a fluidized bed, which can solve one or more of the above problems.

[0005] According to one aspect of the utility model, a heat energy recovery system for a fluidized bed is provided, including a fluidized bed main body, a cyclone separator, a fan and an air inlet cabinet.

[0006] The fluidized bed main body is provided with an air outlet and an air inlet. The air outlet is connected to the cyclone separator, and the air inlet is connected to the air inlet cabinet.

[0007] The cyclone separator is connected to the fan, and the fan is connected to the air inlet cabinet.

[0008] The air inlet cabinet is provided with a makeup air port.

[0009] The beneficial effect of the utility model is that in the utility model, the tail gas discharged from the fluidized bed main body can be subjected to gas-solid separation through the cyclone separator, so that the particles such as materials in the tail gas can be separated from the gas to collect the particles such as materials, and the remaining gas can be transported to the air inlet cabinet through the fan for storage and can be transported into the fluidized bed main body for use when needed. Then, if the gas contains heat, it can be used again in the fluidized bed, reducing energy waste and environmental pollution. In addition, a makeup air port is also provided in the air inlet cabinet, which can facilitate the supplementation of air by an external air supply device through the makeup air port when the amount of gas required to be supplied from the air inlet cabinet to the fluidized bed main body is insufficient.

[0010] In some embodiments, the utility model further includes a first air duct. The air outlet is arranged on the top of the fluidized bed main body. One end of the first air duct is connected to the air outlet, and the other end of the first air duct is connected to the side of the cyclone separator. By arranging the first air duct, the connection between the cyclone separator and the fluidized bed main body can be effectively realized.

[0011] In some embodiments, the utility model further includes a second air duct. One end of the second air duct is connected to the top of the cyclone separator, and the other end of the second air duct is connected to the fan. By arranging the second air duct, the connection between the cyclone separator and the fan can be effectively realized.

[0012] In some embodiments, the utility model further includes a third air duct. One end of the third air duct is connected to the fan, and the other end of the third air duct is connected to one side of the air inlet cabinet. By arranging the third air duct, the connection between the fan and the air inlet cabinet can be effectively realized.

[0013] In some embodiments, the utility model further includes a first valve. The first valve is installed on the third air duct, and the first valve is configured to control the connection state of the third air duct. By arranging the first valve, when the air flow does not contain heat, it can be conveniently prevented from being transported to the air inlet cabinet through the third air duct.

[0014] In some embodiments, the utility model further includes a fourth valve. An air outlet pipe is provided on the third air duct, and the fourth valve is installed on the air outlet pipe. The fourth valve is configured to control the connection state of the air outlet pipe. By arranging the air outlet pipe, the gas after being treated by the cyclone separator can be conveniently output without entering the air inlet cabinet.

[0015] In some embodiments, the utility model further includes a fourth air duct. One end of the fourth air duct is connected to one side of the air inlet cabinet, the air inlet is arranged on the side of the fluidized bed main body, and the other end of the fourth air duct is connected to the air inlet. By arranging the fourth air duct, the connection between the air inlet cabinet and the fluidized bed main body can be effectively realized.

[0016] In some embodiments, the utility model further includes a second valve. The second valve is installed on the fourth air duct, and the second valve is configured to control the connection state of the fourth air duct. The arrangement of the second valve can conveniently disconnect the connection between the air inlet cabinet and the fluidized bed when it is not necessary to supply air from the air inlet cabinet to the fluidized bed.

[0017] In some embodiments, the utility model further includes a third valve. The third valve is installed on the air supply port, and the third valve is configured to control the connection state of the air supply port. The arrangement of the third valve can conveniently disconnect the connection between the air inlet cabinet and the external air supply equipment when the air inlet cabinet does not require external air supply. Description of the Drawings

[0018] Figure 1 The top view of the structural schematic diagram of the heat energy recovery system of a fluidized bed according to an embodiment of the present invention.

[0019] Figure 2 is Figure 1 The enlarged view of part A of the heat energy recovery system of the fluidized bed.

[0020] In the figure: 1. Fluidized bed main body, 2. Cyclone separator, 3. Fan, 4. Air inlet cabinet, 5. First air duct, 6. Second air duct, 7. Third air duct, 8. First valve, 9. Fourth air duct, 10. Second valve, 20. Third valve, 30. Fourth valve, 11. Air outlet, 41. Air supply port, 71. Air outlet duct. Specific embodiments

[0021] The structural principle and working principle of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Refer to Figure 1 and Figure 2 A heat energy recovery system of a fluidized bed according to the present invention includes a fluidized bed main body 1, a cyclone separator 2, a fan 3 and an air inlet cabinet 4.

[0023] An air outlet 11 is provided at the top of the fluidized bed main body 1, and an air inlet is provided at the side of the fluidized bed main body 1.

[0024] The heat energy recovery system of the fluidized bed of the present invention further includes a first air duct 5. One end of the first air duct 5 is fixedly connected to the air outlet 11 by bolts, and the other end of the first air duct 5 is fixedly connected to the side of the cyclone separator 2, so that the arranged air outlet 11 and the cyclone separator 2 are connected and communicated through the first air duct 5.

[0025] The heat energy recovery system of the fluidized bed of the present invention further includes a second air duct 6. The air outlet of the cyclone separator 2 is provided at its top. One end of the second air duct 6 and the air outlet at the top of the cyclone separator 2 are fixedly connected by bolts, and the other end of the second air duct 6 and the air inlet of the fan 3 are fixedly connected by bolts, so that the arranged cyclone separator 2 and the fan 3 are connected and communicated through the second air duct 6.

[0026] The heat energy recovery system of the fluidized bed of the present invention further includes a third air duct 7. One end of the third air duct 7 is fixedly connected to the air outlet of the fan 3 by bolts, and the other end of the third air duct 7 is fixedly connected to one side of the air inlet cabinet 4 by bolts, so that the arranged air inlet cabinet 4 and the fan 3 are connected through the third air duct 7.

[0027] The heat energy recovery system of the fluidized bed of the present utility model further includes a first valve 8. The first valve 8 is fixedly installed on the third air duct 7 by bolts, and the first valve 8 is configured to control the connection state of the third air duct 7, that is, the first valve 8 can control the connection situation between the air inlet cabinet 4 and the fan 4.

[0028] The third air duct 7 can also be provided with an air outlet duct 71. The heat energy recovery system of the fluidized bed of the present utility model further includes a fourth valve 30. The air outlet duct 71 can be connected to the main body of the third air duct 7 and is also connected to the atmosphere. The fourth valve 30 can be installed on the air outlet duct 71 and is configured to control the connection situation of the air outlet duct 71, that is, it can control the connection between the third air duct 7 and the atmosphere.

[0029] The heat energy recovery system of the fluidized bed of the present utility model further includes a fourth air duct 9. One end of the fourth air duct 9 and the other side of the air inlet cabinet 4 are fixedly connected by bolts, and the other end of the fourth air duct 9 and the air inlet are fixedly connected by bolts, so that the air inlet cabinet 4 and the air inlet are connected through the fourth air duct 9 after being arranged.

[0030] The heat energy recovery system of the fluidized bed of the present utility model further includes a second valve 10. The second valve 10 is fixedly installed on the fourth air duct 9 by bolts, and the second valve 10 is configured to control the connection state of the fourth air duct 10, that is, the second valve 10 can control the connection situation between the air inlet cabinet 4 and the air inlet.

[0031] A makeup air inlet 41 is further provided on the top of the air inlet cabinet 4.

[0032] The heat energy recovery system of the fluidized bed of the present utility model further includes a third valve 20. The third valve 20 is fixedly installed on the makeup air inlet 41 by bolts, and the third valve 20 is configured to control the connection state of the makeup air inlet 41.

[0033] When the heat energy recovery system of the fluidized bed of the present utility model is in use, the tail gas of the fluidized bed main body 1 can be discharged through the exhaust port 11. Then the tail gas can enter the cyclone separator 2 through the first air duct 5. The cyclone separator 2 can perform solid-gas separation on the entering tail gas, so that the particles such as materials and gases contained in the tail gas are separated.

[0034] The gas processed by the cyclone separator 2 can be transported to the fan 3 through the second air duct 6. If there is no heat in the tail gas, the fourth valve 30 can be opened, and the gas can be discharged through the air outlet duct 71 of the fan 3.

[0035] If there is a certain amount of heat in the tail gas, that is, the treated gas also has a certain amount of heat. At this time, the first valve 8 can be opened. Under the operation of the fan 3, the gas with heat can be transported to the air inlet cabinet 4 through the third air duct 6 for storage. When the fluidized bed main body 1 needs to be used, the second valve 10 can be opened, and then the gas with heat can enter the fluidized bed main body 1 from the air inlet cabinet 4 through the fourth air duct 9 for the use of the fluidized bed main body 1.

[0036] In addition, to prevent the gas in the air inlet cabinet 4 from being insufficient for the use of the fluidized bed main body 1, the air supply port 41 can be connected to an external gas supply device. When it is necessary to replenish the air in the air inlet cabinet 4, the third valve 20 can be opened so that the external gas supply device can supply air into the air inlet cabinet 4.

[0037] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fluidized bed heat recovery system, characterized in that: It includes fluidized bed body, cyclone separator, fan and air inlet cabinet. The fluidized bed body is provided with an air outlet and an air inlet, wherein the air outlet is connected to the cyclone separator, and the air inlet is connected to the air inlet cabinet. The cyclone separator is connected to the fan, and the fan is connected to the air inlet cabinet. The air inlet cabinet is provided with an air supply port.

2. The heat recovery system of the fluidized bed according to claim 1, characterized in that: It comprises a first air duct, the air outlet is arranged on the top of the fluidized bed body, one end of the first air duct is connected to the air outlet, and the other end of the first air duct is connected to the side of the cyclone separator.

3. The heat recovery system of the fluidized bed according to claim 1, characterized in that: It comprises a second air duct, one end of which is connected to the top of the cyclone separator, and the other end of which is connected to the fan.

4. The heat recovery system of a fluidized bed according to claim 1, characterized in that: It comprises a third air duct, one end of which is connected to the fan, and the other end of which is connected to one side of the air inlet cabinet.

5. The heat recovery system of the fluidized bed according to claim 4, characterized in that: It includes a first valve, which is installed on the third air duct and is configured to control the connection state of the third air duct.

6. The heat recovery system of a fluidized bed according to claim 4, characterized in that: A fourth valve is included. The third air duct is provided with an air outlet duct. The fourth valve is installed on the air outlet duct. The fourth valve is configured to control the connectivity of the air outlet duct.

7. The heat recovery system of a fluidized bed according to claim 1, characterized in that: It comprises a fourth air duct, one end of which is connected to one side of the air inlet cabinet, the air inlet is arranged on the side of the fluidized bed body, and the other end of the fourth air duct is connected to the air inlet.

8. The heat recovery system of a fluidized bed according to claim 7, characterized in that: A second valve is included, wherein the second valve is installed on the fourth air duct, and the second valve is configured to control the connection state of the fourth air duct.

9. The heat recovery system of a fluidized bed according to claim 1, characterized in that: A third valve is included, which is installed on the air supply port and is configured to control the connection state of the air supply port.

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