Centralized exhaust system for multiple fluidized beds

Abstract

The utility model discloses a centralized exhaust system for a plurality of fluidized beds, which comprises a plurality of unit fluidized beds, a plurality of exhaust fans, an exhaust pipe, an air pipe and a one-way valve, and the plurality of exhaust fans and the plurality of unit fluidized beds are connected and communicated in one-to-one correspondence. The exhaust fans are connected and communicated with the same exhaust pipe through different air pipes, one-way valves can be installed on the air pipes, exhaust pipe joints are arranged between the exhaust pipes and the adjacent exhaust fans connected with the exhaust pipes, and one-way valves can also be installed on the exhaust pipe joints. According to the exhaust system, tail gas emission of multiple unit fluidized beds can be achieved, the arrangement difficulty and cost of the exhaust system are reduced, the flow direction of air flow is single in the emission process, the phenomenon of air mixing can be effectively avoided, and the working reliability of the exhaust system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of fluidized bed design, in particular to a centralized exhaust system for multiple fluidized beds. Background Art

[0002] A fluidized bed is a device used for the reaction of granular materials. In its specific use, when fluids such as gas or liquid pass through the fluidized bed, the fluid can enter from the bottom of the bed and flow upward, carrying a certain speed and kinetic energy, causing the solid granular materials to produce continuous and violent movement, constantly impacting the reaction device in the fluidized bed, thereby realizing the reaction of the materials.

[0003] During the operation of a fluidized bed, the reaction of materials and the combustion of power source fuel will generate a certain amount of exhaust gas. To facilitate the exhaust gas discharge, it is usually necessary to connect an exhaust system to the fluidized bed. In actual production and processing, as the production scale expands, multiple fluidized beds are sometimes required to work together. However, the exhaust systems connected to multiple fluidized beds are usually set up independently, which is costly, difficult to set up, and time-consuming. After setting up, adjacent exhaust systems are prone to cross-exhaust, affecting the operation of the exhaust system. Utility Model Content

[0004] The purpose of the present utility model is to provide a centralized exhaust system for multiple fluidized beds, which can solve one or more of the above problems.

[0005] According to one aspect of the present invention, a centralized exhaust system for multiple fluidized beds is provided, comprising a unit fluidized bed, an exhaust fan, an exhaust pipe, an air duct and a one-way valve.

[0006] There are multiple unit fluidized beds and exhaust fans, and the multiple exhaust fans are connected and communicated with the multiple unit fluidized beds in a one-to-one correspondence. The multiple exhaust fans are connected and communicated with the same exhaust pipe through different air ducts, and a one-way valve can be installed on the air duct.

[0007] The exhaust pipe is provided with an exhaust pipe section between adjacent exhaust fans connected to the exhaust pipe, and a one-way valve can also be installed on the exhaust pipe section.

[0008] The beneficial effects of the present invention are as follows: in the present invention, the exhaust gas of each unit fluidized bed can be discharged through the corresponding connected exhaust fan and then discharged through the exhaust pipe, and a one-way valve is also provided accordingly to allow the discharged exhaust gas to flow in only one direction. Therefore, the present invention can realize the exhaust gas discharge of multiple unit fluidized beds, reducing the difficulty and cost of setting up the exhaust system, and during the discharge process, the flow direction of the airflow is single, which can effectively avoid the phenomenon of cross-wind, and ensure the working reliability of the exhaust system.

[0009] In some embodiments, the unit fluidized bed includes a fluidized bed body and an exhaust gas treatment system, wherein the fluidized bed body and the exhaust gas treatment system are connected and communicated with each other, and the exhaust fan is connected and communicated with the exhaust gas treatment system. Since the fluidized bed body is typically used to process granular materials, its exhaust gas will contain a large number of solid particles. By providing an exhaust gas treatment system, the solid particles contained in the exhaust gas can be minimized, thereby reducing the probability of solid particles causing exhaust pipe blockage.

[0010] In some embodiments, the unit fluidized bed can be one or more of a horizontal fluidized bed, a vertical fluidized bed, and a pagoda fluidized bed.

[0011] In some embodiments, the exhaust gas treatment system includes a cyclone separator, which is connected to and communicates with the fluidized bed body and is connected to and communicates with the exhaust fan. The cyclone separator can achieve gas-solid separation, thereby separating as much solid particles as possible from the exhaust gas.

[0012] In some embodiments, the exhaust gas treatment system includes a bag dust collector, and the cyclone separation device is connected to and communicates with an exhaust fan via the bag dust collector. The bag dust collector can filter solid particles remaining in the exhaust gas after being treated by the cyclone separation device, thereby further reducing the solid particles contained in the exhaust gas.

[0013] In some embodiments, the unit fluidized bed includes a heating system and an air supply pipe, wherein the heating system and the air supply pipe are connected and communicated with each other, and the air supply pipe is connected and communicated with the fluidized bed body. The heating system can conveniently heat the airflow supplied to the fluidized bed body to meet the specific temperature requirements.

[0014] In some embodiments, the heating system includes a blower, a filter, and a heater, wherein the blower is connected to the filter, the filter is connected to the heater, and the heater is connected to the air supply pipe.

[0015] In some embodiments, the unit fluidized bed includes a reflow cabinet and an air valve. The reflow cabinet is connected and communicated with an exhaust fan, and the reflow cabinet is connected to a fluidized bed body. Air valves are provided between the reflow cabinet and the exhaust fan, and between the reflow cabinet and the fluidized bed body, respectively. Exhaust gas treated by the exhaust gas treatment system may sometimes contain a high amount of heat due to usage needs. Direct discharge of the exhaust gas would waste energy. The provision of the reflow cabinet and air valve facilitates the timely transfer of the heat-containing treated exhaust gas back to the fluidized bed body for use by the fluidized bed body when needed, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a top view of a structural schematic diagram of a centralized exhaust system for multiple fluidized beds according to an embodiment of the present invention.

[0017] Figure 2 This is a top view of a structural schematic diagram of a unit fluidized bed of a centralized exhaust system for multiple fluidized beds in one embodiment of the present invention.

[0018] Figure 3 This is a top view of a structural schematic diagram of a unit fluidized bed of a centralized exhaust system for multiple fluidized beds in one embodiment of the present invention.

[0019] In the figure: 1. Unit fluidized bed, 2. Exhaust fan, 3. Exhaust pipe, 4. Air duct, 5. Check valve, 11. Fluidized bed body, 12. Exhaust gas treatment system, 13. Heating system, 14. Air supply pipe, 10. Horizontal fluidized bed, 20. Vertical fluidized bed, 30. Pagoda fluidized bed, 121. Cyclone separator, 122. Bag filter, 123. Reflux cabinet, 124. Air valve, 131. Blower, 132. Filter, 133. Heater. DETAILED DESCRIPTION

[0020] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0021] refer to Figure 1 、 Figure 2 and Figure 3 The utility model discloses a centralized exhaust system for multiple fluidized beds, comprising a unit fluidized bed 1, an exhaust fan 2, an exhaust pipe 3, an air duct 4 and a one-way valve 5.

[0022] There can be multiple unit fluidized beds 1 . In this embodiment, there are preferably three unit fluidized beds 1 . The unit fluidized beds 1 include a fluidized bed body 11 and an exhaust gas treatment system 12 .

[0023] The fluidized bed body 11 can be one or more of a horizontal fluidized bed 10, a vertical fluidized bed 20 and a pagoda fluidized bed 30. In this embodiment, the fluidized bed bodies 11 of the three unit fluidized beds 1 are preferably a horizontal fluidized bed 10, a vertical fluidized bed 20 and a pagoda fluidized bed 30 respectively.

[0024] In each unit fluidized bed 1, the fluidized bed body 11 and the exhaust gas treatment system 12 are connected and communicated via pipes. Multiple exhaust fans 2 can also be provided. In this embodiment, three exhaust fans 2 are preferably provided. The air inlets of the three exhaust fans 2 are connected and communicated to the exhaust gas treatment systems 12 of the three unit fluidized beds 1 in a one-to-one correspondence via pipes.

[0025] Preferably, in some unit fluidized beds 1, the exhaust gas treatment system 12 can include a cyclone separation device 121, and the cyclone separation device 121 and the fluidized bed body 11 are connected and communicated through a pipeline, so that the cyclone separation device 121 can treat the exhaust gas discharged from the fluidized bed body 11, and the cyclone separation device 121 is connected and communicated with the exhaust fan 2 through a pipeline.

[0026] Preferably, in some unit fluidized beds 1, the exhaust gas treatment system 12 can include a cyclone separation device 121 and a bag dust collector 122. The cyclone separation device 121 and the fluidized bed body 11 are connected and communicated through a pipeline, so that the cyclone separation device 121 can treat the exhaust gas discharged from the fluidized bed body 11, and the bag dust collector 122 is connected and communicated with the cyclone separation device 121 through a pipeline, so that the bag dust collector 122 can further treat the exhaust gas treated by the cyclone separation device 121. The bag dust collector 122 is also connected and communicated with the exhaust fan 2 through a pipeline, that is, the cyclone separation device 121 is connected and communicated with the exhaust fan 2 through the bag dust collector 122.

[0027] Preferably, in some unit fluidized beds 1, the unit fluidized beds 1 may further include a reflow cabinet 123 and an air valve 124. One side of the reflow cabinet 123 is connected and communicated with the air outlet of the exhaust fan 2 via a pipeline, and the other side of the reflow cabinet 123 is connected and communicated with the fluidized bed body 11 via a pipeline. The pipeline between the reflow cabinet 123 and the exhaust fan 2 and the pipeline between the reflow cabinet 123 and the fluidized bed body 11 are respectively provided with air valves 124, which can respectively control the connection from the exhaust fan 2 to the reflow cabinet 123 and the connection from the reflow cabinet 123 to the fluidized bed body 11.

[0028] Preferably, in some unit fluidized beds 1, the unit fluidized beds 1 further include a heating system 13 and an air supply pipe 14. The heating system 13 includes a blower 131, a filter 132, and a heater 133. The air outlet of the blower 131 is connected to and communicates with the filter 132, which can be used to filter dust. The filter 132 is connected to and communicates with the heater 133 via a pipe. The heater 133 can be provided with a heating wire. The heater 133 is fixedly connected to one end of the air supply pipe 14 via a flange, and the other end of the air supply pipe 14 is fixedly connected to the fluidized bed body 11 via bolts.

[0029] There can also be multiple air ducts 4, with multiple exhaust fans 12 connected to the same exhaust pipe 3 through multiple different air ducts 4. Each air duct 4 is equipped with a one-way valve 5. The one-way valve 5 provided on the air duct 4 can ensure that the gas flows from the exhaust fan 12 to the exhaust pipe 3 in one direction, and the air flow in the exhaust pipe 3 cannot flow back into the exhaust fan 12. In addition, a valve can be provided on the air duct 4 to facilitate the opening and closing of the air duct 4, thereby controlling whether the gas can pass through the air duct 4.

[0030] An exhaust pipe section is provided between the exhaust pipe 3 and the adjacent exhaust fans 12 connected to the exhaust pipe 3 . A one-way valve 5 is also installed on the exhaust pipe section. The one-way valve 5 on the exhaust pipe section can make the gas in the exhaust pipe 3 flow in a single direction.

[0031] When the present invention is in use, the tail gas discharged from the fluidized bed body 11 of each unit fluidized bed 1 can be transported to the exhaust fan 2 corresponding to each unit fluidized bed 1 after being treated by the tail gas treatment system 12. The exhaust fan 2 can transport the treated tail gas to the exhaust pipe 3 through the air duct 4, and the exhaust pipe 3 can be connected to an external exhaust device, so that the external exhaust device can extract the gas in the exhaust pipe 3 to achieve gas discharge.

[0032] The exhaust gas treatment system 12 can treat the exhaust gas differently depending on the different devices therein. Specifically, the cyclone separation device 121 can perform gas-solid separation on the exhaust gas to effectively separate the particulate materials contained in the exhaust gas, while the bag dust removal device 122 can filter the particulate materials in the exhaust gas. Both can reduce the particulate materials contained in the exhaust gas.

[0033] The unit fluidized bed 1 is provided with a heating system 13, and its heating system 13 can heat the gas input into the fluidized bed body 11 to obtain input gas of different temperatures. Specifically, the blower 131 can input gas into the filter 132, and the filter 132 can filter the gas to reduce the residual dust in the input gas before inputting it into the heater 133. The heater 133 can heat the input gas and, after heating, transport it to the fluidized bed body 11 through the air supply pipe 14 for use by the fluidized bed body 11.

[0034] For the unit fluidized bed 1 equipped with a reflux cabinet 123 and an air valve 124, when the exhaust gas is treated by the exhaust gas treatment system 12, after entering the exhaust fan 2, the exhaust gas is not directly output to the exhaust pipe 3 but instead the air valve 124 is opened to transport the exhaust gas to the reflux cabinet 123 and then transported back to the fluidized bed body 1 for reuse.

[0035] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A centralized exhaust system for multiple fluidized beds, characterized in that: Including unit fluidized bed, exhaust fan, exhaust pipe, air duct and one-way valve, There are multiple unit fluidized beds and exhaust fans, and the multiple exhaust fans are connected and communicated with the multiple unit fluidized beds in a one-to-one correspondence. The multiple exhaust fans are connected and communicated with the same exhaust pipe through different air ducts, and a one-way valve can be installed on the air duct. The exhaust pipe is provided with an exhaust pipe section between adjacent exhaust fans connected to the exhaust pipe, and a one-way valve can also be installed on the exhaust pipe section.

2. The centralized exhaust system for multiple fluidized beds according to claim 1, characterized in that: The unit fluidized bed comprises a fluidized bed body and a tail gas treatment system, the fluidized bed body and the tail gas treatment system are connected and communicated with each other, and the exhaust fan and the tail gas treatment system are connected and communicated with each other.

3. The centralized exhaust system for multiple fluidized beds according to claim 2, characterized in that: The unit fluidized bed can be one or more of a horizontal fluidized bed, a vertical fluidized bed and a pagoda fluidized bed.

4. The centralized exhaust system for multiple fluidized beds according to claim 2, characterized in that: The tail gas treatment system includes a cyclone separation device, which is connected and communicated with a fluidized bed body, and is connected and communicated with an exhaust fan.

5. The centralized exhaust system for multiple fluidized beds according to claim 4, characterized in that: The tail gas treatment system includes a bag dust removal device, and the cyclone separation device is connected and communicated with the exhaust fan through the bag dust removal device.

6. The centralized exhaust system for multiple fluidized beds according to claim 2, characterized in that: The unit fluidized bed comprises a heating system and an air supply pipe, wherein the heating system and the air supply pipe are connected and communicated with each other, and the air supply pipe is connected and communicated with the fluidized bed body.

7. The centralized exhaust system for multiple fluidized beds according to claim 6, characterized in that: The heating system includes a blower, a filter and a heater. The blower is connected to the filter, the filter is connected to the heater, and the heater is connected to the air supply pipe.

8. The centralized exhaust system for multiple fluidized beds according to claim 2, characterized in that: The unit fluidized bed includes a reflux cabinet and an air valve. The reflux cabinet is connected and communicated with an exhaust fan. The reflux cabinet is connected to a fluidized bed body. Air valves are respectively provided between the reflux cabinet and the exhaust fan and between the reflux cabinet and the fluidized bed body.

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