Ventilation pipe for reaction kettle

Abstract

The utility model relates to a kind of ventilation pipes for reaction kettle, belong to reaction kettle ventilation technical field, including air pipe body and ventilation hole, air pipe body is 1 layer or multilayer axial spiral body, spiral body radial inner diameter is greater than the mixing paddle outside in reaction kettle, ventilation hole is evenly distributed on air pipe body along the same spiral line on the outer surface of air pipe body, spiral design is on the one hand to the gas and material contact reaction, on the other hand not easy to block ventilation hole, the spiral distribution of ventilation hole makes ventilation hole not easy to block, and once individual ventilation hole is blocked, under the action of the gas flow rate of other ventilation hole, it can effectively open by itself, also can make the gas and material contact reaction, improve reaction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of reactor ventilation technology, and in particular relates to a ventilation pipe for reactors. Background Technology

[0002] In chemical production, reaction vessels are one of the most commonly used pieces of equipment for various chemical reactions. The materials inside the reaction vessel usually need to be vented with gas through a ventilation pipe for reaction or stirring. Traditional ventilation pipes are usually located at the bottom of the reaction vessel, and the ventilation holes are designed at the bottom of the ventilation pipe. This design has the following problems in actual use: (1) The ventilation holes are easy to get clogged, especially when the material flow rate is slow or the material viscosity is high. Once the ventilation holes are clogged, cleaning is difficult and affects production efficiency; (2) The distribution of the clogged ventilation holes is uneven, resulting in insufficient contact between the gas and the material, which leads to a decrease in reaction efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ventilation pipe for a reaction vessel that is not easily blocked, is easy to clean, and allows gas to fully contact with materials.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a ventilation pipe for a reaction vessel, comprising a pipe body and ventilation holes. Figure 1 As shown, the duct body is a single or multiple axial spiral, with the radial inner diameter of the spiral being larger than the outer edge of the stirring paddle inside the reactor. During installation, the duct body is fixed to the outer edge of the stirring paddle at the bottom of the reactor, close to the stirring paddle, and the radial axis of the duct body coincides with the axis of the stirring shaft; for example... Figure 2 As shown, the ventilation holes are evenly distributed along the same spiral line on the outer surface of the duct body. The diameter of the ventilation holes is 1 / 20 to 1 / 5 of the inner diameter of the duct body, and the number of ventilation holes on each layer of the spiral is 3 to 10.

[0005] Preferably, the number of spiral layers in the duct body is 1 to 5.

[0006] Through the above design scheme, this utility model can bring the following beneficial effects:

[0007] (1) The ventilation pipe is located at the outer edge of the stirring paddle at the bottom of the reactor. The material flow rate is relatively fast here. On the one hand, the gas ejected from the ventilation hole and the centrifugal force generated by the stirring paddle work together to form a "gas-solid two-phase flow", which keeps the material in a suspended state and reduces the risk of sedimentation and blockage. On the other hand, the stirring paddle has the highest linear velocity at the outer edge of the stirring paddle. Its mechanical movement directly disturbs the material around the ventilation hole and achieves dynamic cleaning. In this way, the ventilation hole is not easy to be blocked and the gas and material come into contact and react, thereby improving the reaction efficiency.

[0008] (2) The ventilation holes on the duct body are distributed in a spiral pattern on the duct, which makes it less likely to block the ventilation holes. If an individual ventilation hole is blocked, it can be effectively opened by the gas flow rate of other ventilation holes. It also facilitates the contact and reaction between the gas and the material, thus improving the reaction efficiency. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0010] Figure 1 This is a schematic diagram of the duct body structure of the ventilation duct for the reactor of this utility model.

[0011] Figure 2 This is a schematic diagram of the ventilation hole structure of the ventilation pipe for the reactor of this utility model.

[0012] In the diagram, 1-duct body, 2-ventilation hole, 3-stirring shaft, 4-reaction vessel, 5-stirring paddle. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below through specific examples. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0014] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0015] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0016] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0017] Example 1

[0018] A ventilation duct for a reactor includes a duct body 1 and ventilation holes 2. The duct body 1 is a single-layer axial spiral, with the radial inner diameter of the spiral larger than the outer edge of the agitator 5 inside the reactor 4. During installation, the duct body 1 is fixed to the outer edge of the agitator 5 at the bottom of the reactor 4, close to the agitator 5, and the radial axis of the duct body 1 coincides with the axis of the agitator shaft 3. Figure 2 As shown, ventilation holes 2 are evenly distributed on the duct body 1 along the same spiral line on the outer surface of the duct body 1. The diameter of ventilation holes 2 is 1 / 20 of the inner diameter of the duct body (1). The number of ventilation holes 2 on the spiral body is 3.

[0019] Example 2

[0020] A ventilation duct for a reactor includes a duct body 1 and ventilation holes 2. The duct body 1 is a 3-layer axial spiral, and the radial inner diameter of the spiral is larger than the outer edge of the stirring paddle 5 inside the reactor 4. During installation, the duct body 1 is fixed to the outer edge of the stirring paddle 5 at the bottom of the reactor 4, close to the stirring paddle 5, and the radial axis of the duct body 1 coincides with the axis of the stirring shaft 3. The ventilation holes 2 are evenly distributed on the duct body 1 along the same spiral line on the outer surface of the duct body 1. The diameter of the ventilation holes 2 is 1 / 5 of the inner diameter of the duct body (1), and the number of ventilation holes 2 on each layer of spiral is 3.

[0021] Example 3

[0022] A ventilation duct for a reactor includes a duct body 1 and ventilation holes 2. The duct body 1 is a 4-layer axial spiral, and the radial inner diameter of the spiral is larger than the outer edge of the stirring paddle 5 inside the reactor 4. During installation, the duct body 1 is fixed to the outer edge of the stirring paddle 5 at the bottom of the reactor 4, close to the stirring paddle 5, and the radial axis of the duct body 1 coincides with the axis of the stirring shaft 3. The ventilation holes 2 are evenly distributed on the duct body 1 along the same spiral line on the outer surface of the duct body 1. The diameter of the ventilation holes 2 is 1 / 20 of the inner diameter of the duct body (1), and the number of ventilation holes 2 on each layer of spiral is 10.

[0023] Example 4

[0024] A ventilation duct for a reactor includes a duct body 1 and ventilation holes 2. The duct body 1 is a 5-layer axial spiral, and the radial inner diameter of the spiral is larger than the outer edge of the stirring paddle 5 inside the reactor 4. During installation, the duct body 1 is fixed to the outer edge of the stirring paddle 5 at the bottom of the reactor 4, close to the stirring paddle 5, and the radial axis of the duct body 1 coincides with the axis of the stirring shaft 3. The ventilation holes 2 are evenly distributed on the duct body 1 along the same spiral line on the outer surface of the duct body 1. The diameter of the ventilation holes 2 is 1 / 5 of the inner diameter of the duct body (1), and the number of ventilation holes 2 on each layer of spiral is 10.

[0025] In the same reactor, under the same slurry conditions, stirring rate, and reaction temperature, the ventilation pipes of traditional reactors were compared with those of Examples 1, 2, 3, and 4. The technical solutions of Examples 1, 2, 3, and 4 reduced the risk of ventilation hole blockage by more than 50% compared with those of traditional reactor ventilation pipes, and improved the reaction efficiency by 5% to 10%.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ventilation duct for a reactor, comprising a duct body (1) and ventilation holes (2), characterized in that: The duct body (1) is a single or multi-layer axial spiral. The radial inner diameter of the spiral is larger than the outer edge of the stirring paddle (5) inside the reactor. During installation, the duct body (1) is fixed to the outer edge of the stirring paddle (5) at the bottom of the reactor, close to the stirring paddle (5), and the radial axis of the duct body (1) coincides with the axis of the stirring shaft (3). The ventilation holes (2) are evenly distributed on the duct body (1) along the same spiral line on the outer surface of the duct body (1).

2. The ventilation pipe for a reaction vessel according to claim 1, characterized in that: The diameter of the ventilation hole (2) is 1 / 20 to 1 / 5 of the inner diameter of the duct body (1).

3. The ventilation pipe for a reaction vessel according to claim 1, characterized in that: The number of ventilation holes (2) on each layer of the spiral is 3 to 10.

4. A ventilation pipe for a reaction vessel according to claim 1, characterized in that: The number of spiral layers in the duct body (1) is 1 to 5.

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