Fluidized bed reactor with built-in gas distributor

Abstract

This utility model relates to the field of chemical reaction technology and discloses a fluidized bed reactor with a built-in gas distributor. Through the multi-stage gas distribution and material guiding design of the bubble cap plate, guide plate one, and guide plate two, the gas is evenly dispersed in the reaction tank, and the material forms a stable fluidized state, realizing full contact reaction between the gas and solid phases and improving reaction efficiency. The expansion plate and internal inclined plate structure reduce the gas flow rate, and combined with the filtering effect of the filter screen, it reduces the loss of fine particulate materials and improves the material utilization rate. The independent setting of the catalyst inlet and feed inlet, together with the controllable discharge of the bottom discharge pipe and valve, realizes continuous reaction operation. The gas supply system composed of the fan and ventilation pipe provides a stable airflow to ensure the continuous stability of the fluidized state. The overall structure realizes efficient, stable and controllable operation of the reaction process.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction technology, specifically a fluidized bed reactor with a built-in gas distributor. Background Technology

[0002] With uniform gas distribution and material fluidization state control as its core, this technology is applied to the field of chemical reactions and solves the problems of unstable material fluidization and insufficient gas-solid contact caused by uneven gas distribution in traditional fluidized bed reactors.

[0003] A search revealed existing technology (application number: CN206184217U), which describes a "fluidized bed reactor." This reactor has a tail gas inlet and a tail gas outlet. A reaction zone is provided within the reactor to contain adsorbent. The gas to be treated enters the reaction zone through the tail gas inlet, undergoes adsorption treatment, and is discharged through the tail gas outlet. Multiple recovery pipes are arranged around the outer wall of the reactor, and these recovery pipes are connected to the reaction zone for recovering the settled adsorbent.

[0004] However, although existing technologies have high removal rates of phenolic substances in phenol-containing gases and can separate exhausted adsorbents from effective adsorbents by their different fluidization properties, they still have some shortcomings: existing technologies lack gas flow guidance, while this device reduces the phenomenon of poor fluidization by guiding the gas flow. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fluidized bed reactor with a built-in gas distributor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fluidized bed reactor with a built-in gas distributor, comprising: a reaction tank with a gas chamber at the bottom for placing materials; an expansion plate at the top of the reaction tank; a feeding assembly including a feed inlet on one side of the reaction tank; a discharge assembly including a discharge pipe at the bottom of the reaction tank and a valve rotatably connected to the discharge pipe; a blowing assembly including an air inlet at the bottom of the reaction tank; a flow guiding assembly including a bubble cap plate arranged at the air inlet and a flow guiding plate fixedly connected to the reaction tank; and an exhaust assembly including an exhaust pipe on the expansion plate.

[0007] As a further description of the above technical solution:

[0008] The feeding assembly includes a catalyst feeding port, which is located on one side of the reaction vessel.

[0009] As a further description of the above technical solution:

[0010] The discharge assembly includes a collection bucket, which is arranged at the bottom of the discharge pipe for collecting materials.

[0011] As a further description of the above technical solution:

[0012] The blowing assembly includes: a fan arranged on one side of the reaction tank; and a ventilation pipe, one end of which is connected to the fan and the other end of which is connected to the air chamber at the bottom of the reaction tank.

[0013] As a further description of the above technical solution:

[0014] The flow guiding component includes: a second flow guiding plate, which is disposed inside the reaction tank and has a gap between it and the reaction tank.

[0015] As a further description of the above technical solution:

[0016] The exhaust assembly includes: a filter screen slidably connected to the exhaust pipe; and sliders disposed on both sides of the filter screen.

[0017] As a further description of the above technical solution:

[0018] The diameter of the expansion plate is larger than that of the reaction vessel, and an inclined plate is provided inside the expansion plate.

[0019] This utility model has the following beneficial effects:

[0020] Through the multi-stage gas distribution and material guiding design of the bubble cap plate, guide plate one, and guide plate two, the gas is evenly dispersed in the reaction tank, and the material forms a stable fluidized state, realizing full contact reaction between the gas and solid phases, improving reaction efficiency. The expansion plate and internal inclined plate structure reduce the gas flow rate, and combined with the filtering effect of the filter screen, reduce the loss of fine particulate material and improve material utilization.

[0021] The independent setup of the catalyst inlet and feed inlet, combined with the controllable discharge of the bottom discharge pipe and valves, enables continuous reaction operation. The air supply system composed of a fan and ventilation pipe provides a stable airflow to ensure continuous and stable fluidization. The overall structure enables efficient, stable and controllable operation of the reaction process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the exhaust assembly of this utility model.

[0025] Legend:

[0026] 1. Reaction tank; 2. Feed inlet; 3. Catalyst inlet; 4. Discharge pipe; 5. Valve; 6. Collection tank; 7. Air inlet; 8. Fan; 9. Ventilation pipe; 10. Bubble cap plate; 11. Guide plate one; 12. Guide plate two; 13. Expansion plate; 14. Gas outlet pipe; 15. Filter screen; 16. Sliding block. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] like Figures 1 to 3 As shown, this embodiment provides a fluidized bed reactor with a built-in gas distributor, comprising: a reaction tank 1 with a gas chamber at the bottom for placing materials; an expansion plate 13 disposed at the top of the reaction tank 1; a feeding assembly including a feed inlet 2 opened on one side of the reaction tank 1; a discharge assembly including a discharge pipe 4 disposed at the bottom of the reaction tank 1, and a valve 5 rotatably connected to the discharge pipe 4; an air blowing assembly including an air inlet 7 opened at the bottom of the reaction tank 1; a flow guiding assembly including a bubble cap plate 10 arranged at the air inlet 7, and a flow guiding plate 11 fixedly connected to the reaction tank 1; and an exhaust assembly including an exhaust pipe 14 opened on the expansion plate 13.

[0030] In this embodiment, the material enters the bottom of the reaction tank 1 through the feed inlet 2, and the gas enters the gas chamber through the gas inlet 7. After being dispersed by the bubble cover plate 10, the gas flows upward, making the material fluidized. The guide plate 11 guides the flow of the material. After the reaction, the gas is discharged through the gas outlet pipe 14, and the material is discharged through the discharge pipe 4 and the valve 5, so as to achieve full contact and reaction between the material and the gas.

[0031] Specifically, the feeding assembly includes a catalyst feeding port 3, which is located on one side of the reaction vessel 1.

[0032] The catalyst is introduced into the reaction tank 1 through the catalyst inlet 3 and mixed with the materials to replenish the catalyst required for the reaction and promote the reaction.

[0033] Specifically, the discharge assembly includes a collection bucket 6, which is arranged at the bottom of the discharge pipe 4 for collecting materials.

[0034] In a preferred embodiment, the reacted material falls into the collection tank 6 through the discharge pipe 4 and valve 5 to collect the reacted material for subsequent processing.

[0035] Example 2

[0036] Specifically, the blowing assembly includes: a fan 8, arranged on one side of the reaction tank 1; and a ventilation pipe 9, one end of which is connected to the fan 8 and the other end of which is connected to the air chamber at the bottom of the reaction tank 1.

[0037] It should be noted that the gas generated by the blower 8 is transported to the bottom gas chamber of the reaction tank 1 through the ventilation pipe 9 to provide a stable airflow for the reactor and fluidize the material.

[0038] Specifically, the flow guiding component includes: a flow guiding plate 12, which is disposed inside the reaction tank 1 and has a gap between it and the reaction tank 1.

[0039] Example 3

[0040] Specifically, the exhaust assembly includes: a filter screen 15, which is slidably connected to the exhaust pipe 14; and sliders 16, which are disposed on both sides of the filter screen 15.

[0041] It should be noted that the gas is discharged from the outlet pipe 14 through the filter screen 15. The filter screen 15 can be removed and cleaned by sliding the slider 16. It filters particles in the gas and makes it easy to clean the filter screen 15.

[0042] Specifically, the diameter of the expansion plate 13 is larger than that of the reaction vessel 1, and an inclined plate is provided inside the expansion plate 13.

[0043] In this embodiment, the expansion plate 13 increases the top space, and the inclined plate guides the rising gas to decelerate, reducing the amount of material carried by the gas.

[0044] During use, the user feeds materials into the reaction tank 1 and starts the blower 8, which generates airflow that enters the air chamber at the bottom of the reaction tank 1 through the ventilation pipe 9, and then enters the bubble cap plate 10 through the air inlet 7. The bubble cap plate 10 has an air outlet on its circumference. The gas blown out through the air outlet of the bubble cap plate 10 flows upward under the action of the guide plate 11. The material at the bottom of the reaction tank 1 is inclined and gathers around the guide plate 11. The generated blowing force blows the material upward along the guide plate 12. At this time, the user adds the catalyst, which mixes with the catalyst during the material's reciprocating circulation. The expansion plate 13 is used to reduce the kinetic energy of the particles, so that the particles are not carried during the exhaust gas process and fall down along the inclined plate of the expansion plate 13 under the action of gravity. The filter screen 15 set on the exhaust pipe 14 also has the effect of blocking particles. After the process is completed, the user can open the valve 5 and the material is discharged into the collection tank 6 through the discharge pipe 4. The air chamber at the bottom of the reaction tank 1 and the discharge pipe 4 are sealed.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fluidized bed reactor with a built-in gas distributor, characterized in that, include: The reaction vessel (1) has a gas chamber at the bottom for placing materials; An expansion plate (13) is installed on top of the reaction vessel (1); The feeding assembly includes a feed inlet (2) located on one side of the reaction vessel (1); The discharge assembly includes a discharge pipe (4) located at the bottom of the reaction vessel (1) and a valve (5) rotatably connected to the discharge pipe (4); The blowing assembly includes an air inlet (7) located at the bottom of the reaction vessel (1); The flow guiding assembly includes a bubble cap plate (10) arranged at the air inlet (7) and a flow guiding plate (11) fixedly connected to the reaction vessel (1); The exhaust assembly includes an exhaust pipe (14) opened on the expansion plate (13).

2. A fluidized bed reactor with a built-in gas distributor according to claim 1, characterized in that The feeding assembly includes: The catalyst inlet (3) is located on one side of the reaction vessel (1).

3. A fluidized bed reactor with a built-in gas distributor according to claim 2, characterized in that, The discharge assembly includes: A collection bucket (6) is placed at the bottom of the discharge pipe (4) for collecting materials.

4. A fluidized bed reactor with a built-in gas distributor according to claim 3, characterized in that The blowing assembly includes: A blower (8) is arranged on one side of the reaction tank (1); The ventilation pipe (9) is connected at one end to the fan (8) and at the other end to the gas chamber at the bottom of the reaction tank (1).

5. A fluidized bed reactor with a built-in gas distributor according to claim 4, characterized in that The flow guiding component includes: The second guide plate (12) is set inside the reaction tank (1) and there is a gap between it and the reaction tank (1).

6. A fluidized bed reactor with a built-in gas distributor according to claim 5, characterized in that The exhaust assembly includes: The filter screen (15) is slidably connected to the air outlet pipe (14); The slider (16) is set on both sides of the filter screen (15).

7. A fluidized bed reactor with a built-in gas distributor according to claim 6, characterized in that The diameter of the expansion plate (13) is larger than that of the reaction vessel (1), and an inclined plate is provided inside the expansion plate (13).

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