Gas distribution device for tower reactor

Abstract

The utility model relates to chemical equipment, in particular to a gas distribution device for a tower reactor. Comprising an air inlet pipe, a bottom plate, an annular air guide plate and a circular truncated cone air guide plate, the bottom plate, the annular gas guide plate and the circular truncated cone gas guide plate are connected in sequence; the annular gas guide plate is composed of a plurality of concentric circular tubes, the circular truncated cone gas guide plate is composed of a plurality of concentric conical tubes, and the space between the conical tubes is a gas outlet; and the air inlet pipe is a rectangular pipe, is communicated with the annular air guide plate, and is tangent to the side wall of the circular pipe on the outermost side of the annular air guide plate. And uniform distribution and smooth flow of airflow in the reactor are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical equipment, concretely for a gas distribution device for tower reactor. BACKGROUND

[0002] At present, the mass transfer and heat transfer between gas phase-liquid phase, gas phase-solid phase are widely used in chemical industry, and the components and heat in the gas phase medium are recycled and treated. The equipment includes: packed tower reactor; plate tower reactor; spray tower reactor; bubble tower reactor, etc. The mass transfer efficiency between gas-liquid, gas-solid interface in the tower reactor is the key factor directly affecting the performance of the reactor equipment. In the reactor design, the gas introduction mode is mainly designed with a single gas inlet. After the gas flow is introduced into the reactor, uneven distribution is a common problem, which can cause the gas flow to deviate to one side or some areas, instead of uniform distribution. This uneven flow causes uneven and insufficient contact between gas-liquid, gas-solid, which directly affects the mass transfer and heat transfer efficiency in the reactor, and reduces the efficiency of the whole reaction process.

[0003] In order to improve the uneven flow phenomenon of the equipment inlet gas flow, the Chinese patent with publication number CN 201930781 U discloses a "gas distributor", and the Chinese patent with publication number CN 203886352 U discloses a "gas distribution device of fiber bundle filter", both of which have relatively complex structure design and large gas operation resistance pressure drop. When the inlet gas flow fluctuates, the operating pressure gradient changes more greatly, and at the same time, the gas flow uniformity in the tower is poor, which further reduces the working efficiency in the reactor. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a gas distribution device for tower reactor, which ensures uniform distribution and smooth flow of gas flow in the reactor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A gas distribution device for tower reactor, comprising an air inlet pipe, a bottom plate, an annular air guide plate and a circular table air guide plate; the bottom plate, the annular air guide plate and the circular table air guide plate are connected in sequence; the annular air guide plate is composed of a plurality of concentric circular pipes, and the circular table air guide plate is composed of a plurality of concentric conical pipes, and the space between the conical pipes is a gas outlet; the air inlet pipe is a rectangular pipe, the air inlet pipe is communicated with the annular air guide plate, and the side wall of the outermost circular pipe of the annular air guide plate is tangent to the air inlet pipe.

[0007] Further, the cross section of the air inlet pipe is rectangular, the rectangular height is H, mm; the rectangular width is D, mm; the radius of the outermost circular pipe of the annular air guide plate is R1, mm; D≤R1.

[0008] Further, the annular air guide plate is provided with circular arc-shaped openings in addition to the innermost and outermost circular tubes; the height of the opening is equal to the height of the rectangle, and the arc length of the opening is equal to 1 / 4 of the circumference of the circular tube.

[0009] Further, the cross-sectional areas between the plurality of concentric circular conical tubes from outside to inside are ZS1, ZS2, ZS3, …, ZS n , the cross-sectional areas between the plurality of concentric circular tubes from outside to inside are YS1, YS2, YS3, …, YS n , ZS1:ZS2:ZS3, …, ZS n = YS1:YS2:YS3, …, YS n .

[0010] Further, the top ends of the plurality of concentric circular conical tubes are of the same height.

[0011] Further, the circular air guide plate is provided with a cyclone vane.

[0012] Further, the cyclone vane is two layers, which are located at the upper part and the lower part of the circular air guide plate.

[0013] Further, the circular air guide plate is provided with a diameter-directional and vertical outlet air guide plate.

[0014] Compared with the prior art, the utility model has at least the following technical effects or advantages:

[0015] 1、The annular air guide plate is composed of a plurality of concentric circular tubes, the circular air guide plate is composed of a plurality of concentric circular conical tubes, and the side wall of the outermost circular tube of the annular air guide plate is tangent to the inlet pipe.

[0016] The utility model uses the cyclone structure design to change the advancing direction of the airflow, and by means of the layout of the multiple compartments, the uniform distribution and smooth flow of the airflow in the reactor are ensured.

[0017] 2. The circular table air guide plate is internally provided with cyclone vanes, when the airflow passes through the cyclone vanes, centrifugal rotation movement can be generated, the air flow rate can be effectively adjusted, and the air flow rate remains stable and uniform.

[0018] 3. The cyclone vanes are two layers, and are located at the upper portion and the lower portion of the circular table air guide plate.

[0019] 4. The annular air guide plate is provided with circular arc openings in addition to the outermost circular tube; the height of the opening is equal to the height of the rectangle, and the arc length of the opening is equal to 1 / 4 of the circumference of the circular tube.

[0020] 5. The annular air guide plate is provided with circular arc openings in addition to the outermost circular tube; the height of the opening is equal to the height of the rectangle, and the arc length of the opening is equal to 1 / 4 of the circumference of the circular tube. n n The uniform distribution of the gas is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment 1 of the utility model.

[0022] Figure 2 is a schematic diagram of the structure of the embodiment 1 of the utility model.

[0023] Figure 3 is the A-A sectional view of Figure 2 .

[0024] Figure 4 is a schematic diagram of the structure of the embodiment 1 of the utility model.

[0025] Figure 5 is a schematic diagram of the three-dimensional structure of the embodiment 2 of the utility model.

[0026] Figure 6 is a schematic diagram of the three-dimensional structure of the embodiment 3 of the utility model.

[0027] Figure 7 is a schematic diagram of the three-dimensional structure of the embodiment 4 of the utility model.

[0028] Figure 8 is the airflow effect diagram of the embodiment 2 of the utility model.

[0029] Figure 9 is the airflow effect diagram of the embodiment 3 of the utility model.

[0030] Figure 10 is the airflow effect diagram of the embodiment 4 of the utility model.

[0031] ​In the figure: 1, the air inlet pipe; 2, the bottom plate; 3, the annular air guide plate; 4, the circular table ring plate; 5, the outlet air guide plate; 6, the gas outlet; 7, the notch; H, the rectangular height; D, the rectangular width; R1, the radius of the first circular pipe; 31, the first circular pipe; 32, the second circular pipe; 33, the third circular pipe; 34, the fourth circular pipe; 35, the fifth circular pipe; 41, the first conical pipe; 42, the second conical pipe; 43, the third conical pipe; 44, the fourth conical pipe; ZS1, the cross-sectional area between the first conical pipe and the second conical pipe; ZS2, the cross-sectional area between the second conical pipe and the third conical pipe; ZS3, the cross-sectional area between the third conical pipe and the fourth conical pipe; YS1, the cross-sectional area between the first circular pipe and the second circular pipe; YS2, the cross-sectional area between the second circular pipe and the third circular pipe; YS3, the cross-sectional area between the third circular pipe and the fourth circular pipe; 8, the cyclone blade. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, in order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0038] Example 1:

[0039] like Figures 1-4 As shown, a gas distribution device for a tower reactor includes an inlet pipe 1, a bottom plate 2, an annular gas guide plate 3, a frustum-shaped gas guide plate 4, and an outlet gas guide plate 5. The frustum-shaped gas guide plate 4, the annular gas guide plate 3, and the bottom plate 2 are connected sequentially from top to bottom, and the inlet pipe 1 extends tangentially into the lower part of the annular gas guide plate 3.

[0040] In this embodiment, the annular air guide plate 3 is composed of five concentric circular tubes with vertical axes, namely, the first circular tube 31, the second circular tube 32, the third circular tube 33, the fourth circular tube 34, and the fifth circular tube 35, from the outside to the inside. The top and bottom ends of the first circular tube 31, the second circular tube 32, the third circular tube 33, the fourth circular tube 34, and the fifth circular tube 35 are flush. The bottom ends of the first circular tube 31, the second circular tube 32, the third circular tube 33, the fourth circular tube 34, and the fifth circular tube 35 are fixed to the base plate 2, which is a horizontally arranged circular plate with the same diameter as the first circular tube.

[0041] The inlet pipe 1 is a rectangular pipe with a rectangular cross section; the rectangular height is H, mm; the rectangular width is D, mm; and the rectangular width D is less than the radius R1 of the first circular pipe. The inlet pipe 1 is horizontally arranged and tangentially extends into the lower part of the annular air guide plate 3. One side of the inlet pipe 1 is tangent to the first circular pipe 31, and the other side intersects the first circular pipe 31.

[0042] The second circular pipe 32, the third circular pipe 33 and the fourth circular pipe 34 of the annular air guide plate are each provided with a circular-arc-shaped gap 7. The height of the gap is equal to the rectangular height H, and the arc length of the gap is equal to 1 / 4 of the circumference of the circular pipe. The smooth flow of the gas is ensured.

[0043] In the embodiment, the circular-taipan ring plate 4 is composed of four axis-vertical concentric conical pipes, which are the first conical pipe 41, the second conical pipe 42, the third conical pipe 43 and the fourth conical pipe 44 from outside to inside. The top end and the bottom end of the first conical pipe 41, the second conical pipe 42, the third conical pipe 43 and the fourth conical pipe 44 are flush. The bottom end of the first conical pipe 41 is connected to the top end of the first circular pipe 31, the bottom end of the second conical pipe 42 is connected to the top end of the second circular pipe 32, the bottom end of the third conical pipe 43 is connected to the top end of the third circular pipe 33, and the bottom end of the fourth conical pipe 44 is connected to the top end of the fourth circular pipe 34.

[0044] The gas outlet 6 is between the concentric conical pipes. The circular-taipan air guide plate 4 is provided with a diameter-direction and vertical air guide plate 5. In the embodiment, the air guide plate 5 is four, which are uniformly distributed along the circumferential direction of the conical pipe. The air guide plate 5 is located at the upper end of the conical pipe, and the top end of the air guide plate 5 is flush with the top end of the conical pipe.

[0045] In the embodiment, the cross-sectional area ZS1 between the first conical pipe and the second conical pipe: the cross-sectional area ZS2 between the second conical pipe and the third conical pipe: the cross-sectional area ZS3 between the third conical pipe and the fourth conical pipe = the cross-sectional area YS1 between the first circular pipe and the second circular pipe: the cross-sectional area YS2 between the second circular pipe and the third circular pipe: the cross-sectional area YS3 between the third circular pipe and the fourth circular pipe. The uniform distribution of the gas is ensured.

[0046] The working principle and working process of the utility model are as follows:

[0047] The gas enters the multiple annular air flow guide compartments surrounded by the annular air guide plate 3 through the inlet pipe 1. After entering the air flow guide compartment, the air flow forms multiple groups of centripetal radial rotating air flows; the rotating air flow continuously rises into the circular-taipan compartment space surrounded by the circular-taipan ring plate 4. With the increase of the flow height of the air flow, the cross-sectional area of the circular-taipan compartment continuously increases, and the rotating diameter of the gas also correspondingly increases. According to the principle of constant rotating distance, the flow speed of the rotating air flow gradually decreases, and is uniformly discharged from the multiple annular gas outlets 6 at the upper part of the device, so that the uniform distribution of the gas at the inlet of the reactor is realized.

[0048] The utility model discloses simple structure is reliable, and the operation elasticity is big, and the operation resistance is little, and the limited reactor entrance space is fully utilized, realizes the quick even distribution of high -speed airflow, thereby the working efficiency of reactor is greatly promoted.

[0049] Embodiment 2:

[0050] As a preferred embodiment of the utility model, the specific structure is as shown in Figure 5 The improvement is that the cyclone vane 8 is arranged in the circular table air guide plate 4, and the cyclone vane 8 is arranged in the upper part of the circular table air guide plate 4.

[0051] Embodiment 3:

[0052] As a preferred embodiment of the utility model, the specific structure is as shown in Figure 6 The improvement is that the cyclone vane 8 is arranged in the circular table air guide plate 4, and the cyclone vane 8 is arranged in the upper part of the circular table air guide plate 4.

[0053] Embodiment 4:

[0054] As a preferred embodiment of the utility model, the specific structure is as shown in Figure 7 The improvement is that the cyclone vane 8 is arranged in the circular table air guide plate 4, and the cyclone vane 8 is arranged in the upper part of the circular table air guide plate 4.

[0055] As shown in Figures 8-10 Compared with embodiments 2 and 3, the embodiment 4 has significantly improved the uniformity of the overall gas flow distribution of the gas outlet. At the same time, the uniformity of the gas flow velocity distribution of each annular gas outlet has also been significantly improved.

[0056] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A gas distribution device for a tower reactor, characterized in that: it comprises a gas inlet pipe, a bottom plate, an annular gas guide plate and a circular truncated cone gas guide plate; the bottom plate, the annular gas guide plate and the circular truncated cone gas guide plate are connected in sequence; the annular gas guide plate is composed of a plurality of concentric circular pipes, and the circular truncated cone gas guide plate is composed of a plurality of concentric circular cone pipes, the space between the circular cone pipes being a gas outlet; the gas inlet pipe is a rectangular pipe, the gas inlet pipe being in communication with the annular gas guide plate, and the side wall of the outermost circular pipe of the annular gas guide plate being tangent to the gas inlet pipe.

2. The gas distribution device for a tower reactor according to claim 1, characterized in that: the cross section of the gas inlet pipe is rectangular, the height of the rectangle being H, mm, and the width of the rectangle being D, mm; the radius of the outermost circular pipe of the annular gas guide plate being R1, mm; D≤R1.

3. The gas distribution device for a tower reactor according to claim 2, characterized in that: all the circular pipes of the annular gas guide plate except the innermost and outermost circular pipes are provided with circular arc-shaped openings; the height of the opening is equal to the height of the rectangle, and the arc length of the opening is equal to 1 / 4 of the circumference of the circular pipe.

4. The gas distribution device for a tower reactor according to claim 1, characterized in that: The cross-sectional areas between the plurality of concentric conical tubes from outside to inside are ZS1, ZS2, ZS3, … ZS n , the cross-sectional areas between the plurality of concentric circular tubes from outside to inside are YS1, YS2, YS3, … YS n , ZS1:ZS2:ZS3, … ZS n = YS1:YS2:YS3, … YS n .

5. The gas distribution device for a tower reactor according to claim 1, characterized in that: the heights of the top ends of the plurality of concentric circular cone pipes are the same.

6. The gas distribution device for a tower reactor according to claim 1, characterized in that: the circular truncated cone gas guide plate is provided with a cyclone vane.

7. The gas distribution device for a tower reactor according to claim 6, characterized in that: the cyclone vane is two layers, and is located at the upper part and the lower part of the circular truncated cone gas guide plate, respectively.

8. The gas distribution device for a tower reactor according to claim 1, characterized in that: the circular truncated cone gas guide plate is provided with a vertical outlet gas guide plate along the diameter direction.

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