Fluidized bed fluid distributor with adjustable aperture ratio

Abstract

The utility model relates to the technical field of fluid distributors, in particular to a fluidized bed fluid distributor with adjustable aperture ratio, which comprises a reaction kettle and a spray head with a guide plate, and the spray head is mounted in the reaction kettle; a pressure relief hole is formed in the outer side of the reaction kettle, and a pressure relief piston is matched in the pressure relief hole; an upper pore plate is fixed to the lower end in the spray head, a plurality of upper through holes are formed in the surface of the upper pore plate, a lower pore plate is attached to the lower end of the upper pore plate, and a plurality of lower through holes are formed in the surface of the lower pore plate; according to the reaction kettle, the effect of automatic pressure relief protection is achieved, explosion caused by too high air pressure in the reaction kettle is avoided, potential safety hazards are effectively reduced, and the aperture ratio between the upper through hole and the lower through hole can be conveniently adjusted, so that tiny bubbles with the corresponding size can be generated in the reaction kettle according to reaction requirements, and the reaction quality is improved. And the spraying speed of the material can be adjusted according to the reaction condition.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid distributors, in particular to a fluid distributor of a fluid bed with adjustable opening rate. Background Art

[0002] The liquid distributor is a critical internal part in the packed tower, which not only affects the mass transfer efficiency of the packing, but also affects the operational flexibility of the packing. In order to reduce the amplification effect caused by poor liquid distribution and give full play to the efficiency of the packing, a liquid distributor must be installed in the fluidized bed to evenly distribute the liquid on the top of the packing layer. The fluidized bed is also called a fluidized bed, which is a fluidized solid particle layer of boiling liquid (see solid fluidization).

[0003] Chinese Patent Application No. 202120416694.2 discloses a fluid distributor for olefin polymerization reaction, including a reactor, and a nozzle arranged in the reactor, the nozzle is used to spray materials in the reactor for olefin polymerization reaction, and the internal cavity of the nozzle is provided with a guide plate, and the internal cavity of the nozzle is provided with a perforated plate below the guide plate; the outer surface of the nozzle is fixed with a fluid distribution plate, the circumference of the fluid distribution plate is provided with a plurality of notches, and the two side walls of the notch are arranged with a plurality of groups of upwardly inclined air distribution plates, and the upper surface of the fluid distribution plate is located between two adjacent notches and is also provided with a plurality of groups of protrusions. In the fluid distributor for olefin polymerization reaction, the olefin polymerization reaction material passes through the nozzle and the distribution plate, so that the liquid phase material can be divided into tiny bubbles, and evenly distributed in the reactor, thereby improving the reaction efficiency and the utilization rate of the material, and facilitating use.

[0004] By referring to the above comparative documents, since the reactor in the comparative documents will generate gas pressure when carrying out olefin polymerization reaction, if the gas pressure is too high, due to the lack of timely pressure relief measures, it may cause the reactor to explode, and there are certain safety hazards. Moreover, when tiny bubbles are generated through the orifice plate, since the opening rate of the through holes in the orifice plate cannot be adjusted, tiny bubbles of corresponding size cannot be generated in the reactor according to the reaction requirements, and the material ejection rate cannot be adjusted according to the reaction conditions. Utility Model Content

[0005] The utility model provides a fluid distributor for a fluidized bed with adjustable opening rate, which is beneficial to timely pressure relief protection of a reactor and conveniently adjusts the size of the opening rate.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A fluid distributor for a fluidized bed with adjustable opening rate, comprising a reaction kettle and a nozzle with a guide plate, wherein the nozzle is installed in the reaction kettle;

[0008] A pressure relief hole is provided on the outside of the reactor, and a pressure relief piston is matched in the pressure relief hole;

[0009] An upper orifice plate is fixed at the lower end of the nozzle, and a plurality of upper through holes are opened on the surface of the upper orifice plate; a lower orifice plate is attached to the lower end of the upper orifice plate, and a plurality of lower through holes are opened on the surface of the lower orifice plate, and the plurality of upper through holes correspond to the plurality of lower through holes one by one up and down; an adjusting rod is rotatably connected to the middle part of the lower end of the upper orifice plate, and the adjusting rod is fixed downward and passes through the lower orifice plate; a secondary bevel gear is fixed to the lower end of the adjusting rod, and a main bevel gear is meshed with the external part of the secondary bevel gear; an adjusting shaft is fixed to the right end of the main bevel gear, and the adjusting shaft rotates rightward in sequence and passes through the nozzle and the outside of the reactor.

[0010] Furthermore, a push plate close to the pressure relief piston is provided outside the reaction kettle, a fixing rod is fixed between the push plate and the pressure relief piston, and at least two springs are connected between the push plate and the reaction kettle.

[0011] Furthermore, the upper and lower ends of the fixing rod are both provided with guide rods fixed to the outside of the reaction kettle, and the push plate is slidably sleeved with the guide rods.

[0012] Furthermore, a handle is fixed to the right end of the adjusting shaft.

[0013] Furthermore, a model orifice plate sleeved on the periphery of the adjusting shaft is fixed on the outside of the reaction kettle, and a plurality of model through holes are opened on the surface of the model orifice plate.

[0014] Furthermore, an indicator plate is attached to the side surface of the model hole plate, and an indicator hole is opened on the surface of the indicator plate, and the indicator hole corresponds to the model through hole.

[0015] Beneficial effects of the utility model:

[0016] 1. By setting the pressure relief hole and the pressure relief piston, if the air pressure inside the reactor is too high and pressure relief protection is required, the air pressure will push the pressure relief piston out of the pressure relief hole, and the pressure relief hole will open, thereby achieving the effect of automatic pressure relief protection, avoiding explosions inside the reactor due to excessive air pressure, and effectively reducing safety hazards;

[0017] 2. By setting the upper orifice plate and the lower orifice plate, the lower orifice plate is rotated below the upper orifice plate, so that the upper through hole and the lower through hole are misaligned, and the lower orifice plate will cover part of the opening of the upper through hole. Therefore, the opening ratio between the upper through hole and the lower through hole can be conveniently adjusted, which is conducive to generating tiny bubbles of corresponding size in the reactor according to the reaction requirements, and is also conducive to adjusting the ejection rate of the material according to the reaction conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 A is a schematic diagram of the enlarged structure of the local area of ​​the utility model;

[0020] Figure 3 This is a schematic diagram of the upper orifice plate structure of the utility model;

[0021] Figure 4 This is a bottom view structural diagram of the lower hole plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the top structure of the upper orifice plate of the utility model;

[0023] Figure 6 It is a schematic diagram of the enlarged structure of the B part of the utility model;

[0024] Figure 7 It is a schematic diagram of the enlarged structure of the C part of the utility model;

[0025] Figure 8 It is a schematic diagram of the side view structure of the model orifice plate of the utility model.

[0026] Description of reference numerals:

[0027] Reactor 1, nozzle 2, upper orifice plate 3, lower orifice plate 4, adjusting rod 5, upper through hole 6, lower through hole 7, main bevel gear 8, auxiliary bevel gear 9, adjusting shaft 10, model orifice plate 11, model through hole 12, indicator plate 13, indicator hole 14, handle 15, pressure relief hole 16, pressure relief piston 17, fixing rod 18, push plate 19, guide rod 20, spring 21. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0029] like Figure 1 , 2 As shown, in this embodiment, a reaction kettle 1 and a nozzle 2 with a guide plate are included. The nozzle 2 is installed in the reaction kettle 1. A pressure relief hole 16 is opened on the outside of the reaction kettle 1. A pressure relief piston 17 is matched in the pressure relief hole 16.

[0030] When the reactor 1 is working, if the internal air pressure of the reactor 1 is too high and pressure relief protection is required, by arranging a pressure relief piston 17 in the pressure relief hole 16, the air pressure will push the pressure relief piston 17 out of the pressure relief hole 16 until the pressure relief hole 16 is opened, and then the pressure is relieved through the pressure relief hole 16, thereby achieving the effect of automatic pressure relief protection, avoiding explosion due to excessive air pressure inside the reactor 1, and effectively reducing safety hazards.

[0031] like Figure 2As shown, in this embodiment, the reactor 1 is provided with a push plate 19 close to the pressure relief piston 17, a fixing rod 18 is fixed between the push plate 19 and the pressure relief piston 17, at least two springs 21 are connected between the push plate 19 and the reactor 1, and the upper and lower ends of the fixing rod 18 are provided with guide rods 20 fixed to the outside of the reactor 1, and the push plate 19 and the guide rod 20 are slidably sleeved.

[0032] When the pressure is released through the pressure relief piston 17, the pressure relief piston 17 will push the fixed rod 18 and the push plate 19 outward, the push plate 19 will stretch the spring 21, and the push plate 19 will slide outward along the guide rod 20, so as to prevent the push plate 19 and the pressure relief piston 17 from splashing out, so as to prevent the pressure relief piston 17 from splashing and injuring people.

[0033] like Figure 1 , 3 As shown in Figures 4, 5 and 6, in this embodiment, an upper orifice plate 3 is fixed at the lower end of the nozzle 2, and a plurality of upper through holes 6 are opened on the surface of the upper orifice plate 3, a lower orifice plate 4 is attached to the lower end of the upper orifice plate 3, and a plurality of lower through holes 7 are opened on the surface of the lower orifice plate 4, and the plurality of upper through holes 6 correspond to the plurality of lower through holes 7 one by one, and an adjusting rod 5 is rotatably connected to the middle part of the lower end of the upper orifice plate 3, and the adjusting rod 5 is fixed downward and passes through the lower orifice plate 4, and a secondary bevel gear 9 is fixed at the lower end of the adjusting rod 5, and a main bevel gear 8 is meshed with the external side of the secondary bevel gear 9, and an adjusting shaft 10 is fixed to the right end of the main bevel gear 8, and the adjusting shaft 10 rotates rightward in sequence to pass through the nozzle 2 and the reactor 1, and a handle 15 is fixed to the right end of the adjusting shaft 10.

[0034] When the liquid material enters the internal cavity of the nozzle 2, it collides with the outer surfaces of the guide plate and the upper orifice plate 3 to generate tiny bubbles, which is beneficial to the reaction. The adjusting shaft 10 and the main bevel gear 8 are rotated by the handle 15, and the main bevel gear 8 will drive the secondary bevel gear 9, the adjusting rod 5 and the lower orifice plate 4 to rotate together. Since the lower orifice plate 4 is attached to the lower end of the upper orifice plate 3, and the upper through hole 6 corresponds to the lower through hole 7 up and down, the lower orifice plate 4 drives the lower through hole 7 to rotate, thereby causing a misalignment between the upper through hole 6 and the lower through hole 7. The lower orifice plate 4 will cover part of the orifice of the upper through hole 6, so the opening rate between the upper through hole 6 and the lower through hole 7 can be conveniently adjusted, thereby facilitating the generation of tiny bubbles of corresponding size in the reactor 1 according to the reaction requirements, and also facilitating the adjustment of the material ejection rate according to the reaction conditions.

[0035] like Figure 7 , 8 As shown, in this embodiment, a model orifice plate 11 sleeved on the outer periphery of the adjusting shaft 10 is fixed on the outside of the reactor 1, and a plurality of model through holes 12 are opened on the surface of the model orifice plate 11. An indicator plate 13 is attached to the side of the model orifice plate 11, and an indicator hole 14 is opened on the surface of the indicator plate 13, and the indicator hole 14 corresponds to the model through hole 12.

[0036] When the lower orifice plate 4 is driven to rotate by the rotation of the adjusting shaft 10, the adjusting shaft 10 will drive the indicating plate 13 to rotate on the side of the model orifice plate 11, so the indicating plate 13 will drive the indicating hole 14 to correspond to the model through hole 12, and then by observing the opening size between the indicating hole 14 and the model through hole 12, it is helpful to accurately judge the opening size between the upper through hole 6 and the lower through hole 7, so as to accurately generate tiny bubbles of corresponding size in the reactor 1 according to the reaction requirements, and to accurately adjust the material ejection rate according to the reaction conditions.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A fluid distributor for an ebullating bed with adjustable opening rate, comprising a reaction kettle (1) and a nozzle (2) with a guide plate, wherein the nozzle (2) is installed in the reaction kettle (1), and characterized in that: The reactor (1) is provided with a pressure relief hole (16) on the outside, and a pressure relief piston (17) is matched in the pressure relief hole (16); An upper orifice plate (3) is fixed at the lower end of the nozzle (2), and a plurality of upper through holes (6) are opened on the surface of the upper orifice plate (3). A lower orifice plate (4) is attached to the lower end of the upper orifice plate (3), and a plurality of lower through holes (7) are opened on the surface of the lower orifice plate (4). The plurality of upper through holes (6) correspond to the plurality of lower through holes (7) one by one. An adjusting rod (5) is rotatably connected to the middle part of the lower end of the upper orifice plate (3). The adjusting rod (5) is fixed downward and passes through the lower orifice plate (4). A secondary bevel gear (9) is fixed at the lower end of the adjusting rod (5). A main bevel gear (8) is meshed with the secondary bevel gear (9). An adjusting shaft (10) is fixed at the right end of the main bevel gear (8). The adjusting shaft (10) rotates rightward in sequence and passes through the nozzle (2) and the reactor (1).

2. The fluid distributor of an ebullating bed with adjustable opening rate as claimed in claim 1, characterized in that: The reactor (1) is provided with a push plate (19) outside the reactor close to the pressure relief piston (17), a fixing rod (18) is fixed between the push plate (19) and the pressure relief piston (17), and at least two springs (21) are connected between the push plate (19) and the reactor (1).

3. The fluid distributor of an ebullating bed with adjustable opening rate as claimed in claim 2, characterized in that: The upper and lower ends of the fixed rod (18) are both provided with guide rods (20) fixed to the outside of the reaction kettle (1), and the push plate (19) is slidably sleeved with the guide rods (20).

4. The fluid distributor of an ebullating bed with adjustable opening rate according to claim 1, characterized in that: A handle (15) is fixed to the right end of the adjustment shaft (10).

5. The fluid distributor of an ebullating bed with adjustable opening rate as claimed in claim 1, characterized in that: A model orifice plate (11) sleeved on the periphery of the adjustment shaft (10) is fixed on the outside of the reaction kettle (1), and a plurality of model through holes (12) are opened on the surface of the model orifice plate (11).

6. The fluid distributor of an ebullated bed with adjustable opening rate as claimed in claim 5, characterized in that: An indicator plate (13) is attached to the side of the model hole plate (11), and an indicator hole (14) is opened on the surface of the indicator plate (13), and the indicator hole (14) corresponds to the model through hole (12).

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