A reactor for producing an environmentally modified melamine resin

Abstract

The application provides a reactor for producing environment-friendly modified melamine resin, which comprises a reaction device, a stirring device and a heating device, wherein the reaction device comprises a kettle body, a feeding port and a discharging port; the feeding port is arranged on the top of the kettle body, and the discharging port is arranged on the bottom of the kettle body; the stirring device comprises a driving motor, a transmission component, a stirring shaft, a plurality of stirring blades and a plurality of vortex blades; the stirring blades are arranged in pairs on the stirring shaft; each stirring blade is provided with a plurality of turbulent holes on the end stirring surface away from the stirring shaft; the vortex blades are arranged on the stirring shaft and are staggered with the stirring blades in the axial direction of the stirring shaft; the vortex blades have a plurality of tilt rotating blade portions, and the tilt direction of the rotating blade portions forms an acute angle with the axial direction of the stirring shaft.

Description

Technical Field

[0001] This invention relates to a reactor, specifically a reactor for the production of environmentally friendly modified melamine resin, belonging to the technical field of melamine production equipment. Background Technology

[0002] In the production process of modified melamine resin, modifiers need to be added to react with melamine to modify it. These modifiers need to be fully dispersed within the resin matrix. For example, some long-chain or macromolecular modifiers used to modify melamine, such as certain polyether additives, have a certain tendency for phase separation. If the stirring is not uniform, these modifiers will aggregate and cannot be uniformly dispersed in the resin matrix, thus failing to fully exert their effect. Furthermore, localized aggregation may occur, leading to processing defects in the modified melamine resin.

[0003] In existing reactors, a reaction vessel structure is generally adopted, with an internal stirring component to agitate the mixture. However, in the reaction vessel structure, the area near the bottom of the vessel wall and the area around the stirring shaft body are prone to local circulation of material flow, forming a "dead zone". The mixture in this area cannot flow fully under the stirring action and mix fully with the mixture in other parts of the vessel, thus easily agglomerating locally and resulting in poor dispersion effect. Summary of the Invention

[0004] Based on the above background, the purpose of this invention is to provide a reactor for the production of environmentally friendly modified melamine resin, which enables the material in the reactor to have good flowability in the area near the bottom of the reactor wall and in the area around the stirring shaft body, avoiding local circulation and improving the dispersion effect of the material in the reactor.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A reactor for the production of environmentally friendly modified melamine resin, comprising:

[0007] A reaction apparatus, comprising a vessel body, an inlet, and an outlet, wherein the inlet is located at the top of the vessel body and the outlet is located at the bottom of the vessel body;

[0008] A stirring device includes a drive motor, a transmission component, a stirring shaft, multiple stirring blades, and multiple vortex blades. The drive motor and the transmission component are both located on the top of the vessel body. The output end of the drive motor is fixedly connected to the stirring shaft through the transmission component. The stirring shaft is rotatable relative to the vessel body, and at least a portion of the stirring shaft is located inside the vessel body. The stirring blades are arranged in pairs on the stirring shaft, and adjacent pairs of stirring blades are spaced apart along the axial direction of the stirring shaft. Each stirring blade has multiple turbulence holes on its stirring surface at the end away from the stirring shaft. The vortex blades are arranged on the stirring shaft and are staggered with the stirring blades along the axial direction of the stirring shaft. The number of vortex blades matches the number of stirring blades. Each vortex blade is located below a stirring blade. The vortex blade has multiple inclined swirl sections, and the inclination direction of the swirl sections forms an acute angle with the axial direction of the stirring shaft.

[0009] A heating device is disposed outside the vessel body and covers at least a portion of the outer wall of the lower part of the vessel body and at least a portion of the outer wall of the bottom of the vessel body. The heating device is provided with a steam inlet for introducing steam and a steam outlet for discharging steam.

[0010] Preferably, the stirring blade includes a retaining part, a main stirring part, and an auxiliary stirring part that are fixedly connected in sequence. The retaining part is connected to the outer wall of the stirring shaft. The stirring surface of the main stirring part is larger than the stirring surface of the auxiliary stirring part. The turbulence hole is located on the stirring surface of the auxiliary stirring part. The connection between the main stirring part and the auxiliary stirring part is a bent structure. The edges of the main stirring part, the auxiliary stirring part, and the bent structure are all provided with folded wings.

[0011] Preferably, the turbulence holes are arranged in at least three rows. The hole axis of at least one row of turbulence holes located in the middle region of the stirring surface of the auxiliary stirring part is set horizontally, the hole axis of at least one row of turbulence holes located in the top region of the stirring surface of the auxiliary stirring part is inclined downward, and the hole axis of at least one row of turbulence holes located in the bottom region of the stirring surface of the auxiliary stirring part is inclined upward.

[0012] Preferably, the turbulence orifice has a conical orifice structure, and the orifice diameter of the turbulence orifice located on the stirring surface opposite to the direction of rotation of the stirring shaft is larger than the orifice diameter of the turbulence orifice located on the stirring surface with the direction of rotation of the stirring shaft.

[0013] Preferably, the vortex blade further includes a base portion, the upper part of which is a frustum-shaped structure and the lower part of which is an inverted frustum-shaped structure. The middle part of the base portion is provided with a base mounting hole that penetrates the frustum-shaped structure and the inverted frustum-shaped structure. The base portion is sleeved on the outside of the stirring shaft and is fixedly connected to the stirring shaft.

[0014] Preferably, multiple spiral blades are distributed at intervals on the surface of the frustum structure with the axis of the base as the center, and the distance between the tops of adjacent spiral blades is smaller than the distance between the bottoms of adjacent spiral blades.

[0015] Preferably, the swivel section includes a front curved section and a rear curved section. The front curved section extends from the top of the frustum structure to the junction of the frustum structure and the inverted frustum structure and connects with the rear curved section. The end of the rear curved section extends to the junction of the frustum structure and the inverted frustum structure. The distance between the front curved sections of adjacent swivel sections is smaller than the distance between the rear curved sections of adjacent swivel sections.

[0016] Preferably, the transmission component includes a reduction gearbox, a first coupling, a transmission shaft, and a second coupling. The output end of the drive motor is detachably and fixedly connected to one end of the transmission shaft through the reduction gearbox and the first coupling, and the other end of the transmission shaft is detachably and fixedly connected to the top end of the stirring shaft through the second coupling.

[0017] Preferably, the heating device includes a steam coil and heat insulation cotton. The steam coil is fixed to the outer wall of the vessel in a circumferential manner. The steam inlet and the steam outlet are respectively located at both ends of the steam coil. The heat insulation cotton covers the outside of the steam coil and is fixedly connected to the outer wall of the vessel.

[0018] Preferably, the reactor for producing environmentally friendly modified melamine resin also includes a condensation reflux device, which includes a vertical condenser, a horizontal condenser, a water distributor, and a reflux pipe. The bottom of the vertical condenser is connected to the top of the reactor body, the top of the vertical condenser is connected to the water distributor through the horizontal condenser, and the upper part of the water distributor is connected to the top of the reactor body through the reflux pipe.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This invention discloses a reactor for the production of environmentally friendly modified melamine resin. When the stirring blades rotate with the stirring shaft, the turbulence holes on their end stirring surfaces generate tangential turbulence in the mixture around the blade ends, disrupting the flow protective layer formed on the blade surface, improving the fluidity of the mixture, preventing localized circulation in this area, and enhancing the stirring effect in the near-wall region of the reactor. The vortex blades form large vortices around the outer wall of the stirring shaft, significantly improving the fluidity and dispersibility of the mixture in this area. The vortex blades located near the bottom of the stirring shaft further improve the fluidity of the mixture around the bottom wall of the reactor cavity. This reactor enables the modifier to be rapidly and uniformly dispersed in the resin matrix, increasing the probability of individual matrix segments contacting the modifier molecules and ensuring the production quality of the modified melamine resin. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a first embodiment of a reactor for the production of environmentally friendly modified melamine resin according to the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of the stirring device in this invention;

[0024] Figure 3 This is a partial structural diagram of the stirring blade in this invention;

[0025] Figure 4 This is a schematic diagram of the turbulence orifice structure in this invention;

[0026] Figure 5 This is a schematic diagram of the vortex blade structure in this invention;

[0027] Figure 6 This is a schematic diagram of the second embodiment of a reactor for the production of environmentally friendly modified melamine resin according to the present invention.

[0028] In the diagram: 1. Kettle body; 2. Feed inlet; 3. Discharge outlet; 4. Steam coil; 5. Insulation cotton; 6. Steam inlet; 7. Steam outlet; 8. Drive motor; 9. Transmission components; 10. Stirring shaft; 11. Stirring blades; 12. Vortex blades; 13. Vertical condenser; 14. Horizontal condenser; 15. Water distributor; 16. Return pipe; 901. Gearbox; 902. First coupling; 903. Drive shaft; 904. Second coupling; 1101. Mounting seat; 1102. Main stirring section; 1103. Auxiliary stirring section; 1104. Turbulent flow hole; 1105. Folding blade section; 1201. Base section; 1202. Rotary blade section; 12021. Front bending section; 12022. Rear bending section. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any modifications and / or alterations made to the present invention will fall within the protection scope of the present invention.

[0030] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the art. Unless otherwise specified, the methods in the following embodiments are conventional methods in the art. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In this detailed description, numerous specific details are set forth to facilitate explanation and provide a thorough understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0032] like Figure 1 As shown, the first embodiment of the present invention discloses a reactor for the production of environmentally friendly modified melamine resin, including a reaction device, a stirring device, and a heating device.

[0033] The reaction apparatus includes a vessel body 1, a feed inlet 2, and a discharge outlet 3. The vessel body 1 has an inner cavity to provide space for material mixing and material reaction. The feed inlet 2 is located at the top of the vessel body 1, and the discharge outlet 3 is located at the bottom of the vessel body 1.

[0034] The heating device is located outside the vessel body 1, covering at least a portion of the lower outer wall and at least a portion of the bottom outer wall of the vessel body 1. The heating device has a steam inlet 6 for introducing steam and a steam outlet 7 for discharging steam. Specifically, the heating device includes a steam coil 4 and insulation cotton 5. The steam coil 4 is fixed to the outer wall of the vessel body 1 in a circumferential manner. The steam inlet 6 and steam outlet 7 are located at opposite ends of the steam coil 4, with the steam inlet 6 located in the middle of the vessel body 1 and the steam outlet 7 located at the bottom of the vessel body 1. Steam enters the steam coil 4 through the steam inlet 6, flows around the outer wall of the vessel body 1, heating the mixture inside the vessel body 1. Steam is then discharged from the steam coil 4 through the steam outlet 7 and enters the external steam network. The insulation cotton 5 covers the outside of the steam coil 4 and is fixedly connected to the outer wall of the vessel body 1.

[0035] The stirring device includes a drive motor 8, a transmission component 9, a stirring shaft 10, six stirring blades 11, and three vortex blades 12. Both the drive motor 8 and the transmission component 9 are located at the top of the vessel body 1. The output end of the drive motor 8 is fixedly connected to the stirring shaft 10 via the transmission component 9. The stirring shaft 10 is rotatable relative to the vessel body 1, and at least a portion of the stirring shaft 10 is located inside the vessel body 1. Specifically, the transmission component 9 includes a reduction gearbox 901, a first coupling 902, a transmission shaft 903, and a second coupling 904. The output end of the drive motor 8 is detachably and fixedly connected to one end of the transmission shaft 903 via the reduction gearbox 901 and the first coupling 902. The other end of the transmission shaft 903 is detachably and fixedly connected to the top end of the stirring shaft 10 via the second coupling 904.

[0036] like Figure 2 As shown, stirring blades 11 are arranged in pairs on the stirring shaft 10, with adjacent pairs of stirring blades 11 spaced apart along the axial direction of the stirring shaft 10. Each stirring blade 11 has multiple turbulence holes 1104 on its end stirring surface away from the stirring shaft 10. Vortex blades 12 are arranged on the stirring shaft 10 and are staggered with the stirring blades 11 along the axial direction of the stirring shaft 10. The number of vortex blades 12 matches the number of stirring blades 11. Each vortex blade 12 is located below a stirring blade 11 and has multiple inclined swirl sections 1202. The inclination direction of the swirl sections 1202 forms an acute angle with the axial direction of the stirring shaft 10. When the stirring blades 11 rotate with the stirring shaft 10, the turbulence holes 1104 on their end stirring surfaces cause tangential turbulence in the mixture around the ends of the stirring blades 11, breaking the flow protective layer formed on the blade surface, improving the fluidity of the mixture, preventing local circulation of the mixture in this area, and improving the stirring effect in the near-wall area of ​​the vessel body 1. The vortex blades 12 create large vortices around the outer wall of the stirring shaft 10, significantly improving the flowability and dispersibility of the mixture in this area. The vortex blade 12 located at the bottom of the stirring shaft 10 also particularly improves the flowability of the mixture around the bottom wall of the inner cavity of the vessel body 1.

[0037] Specifically, the stirring blade 11 includes a retaining portion 1101, a main stirring portion 1102, and an auxiliary stirring portion 1103, which are fixedly connected in sequence. The retaining portion 1101 is connected to the outer wall of the stirring shaft 10. The main stirring portion 1102 has an elongated plate-like structure with inclined edges, and the auxiliary stirring portion 1103 has a short plate-like structure with inclined edges. The stirring surface of the main stirring portion 1102 is larger than that of the auxiliary stirring portion 1103. The turbulence hole 1104 is located on the stirring surface of the auxiliary stirring portion 1103. The connection between the main stirring portion 1102 and the auxiliary stirring portion 1103 is a bent structure, and the main stirring portion 1102, the auxiliary stirring portion 1103, and the edge of the bent structure are all provided with folded blades 1105.

[0038] like Figure 3As shown, the turbulence holes 1104 are arranged in three rows. The hole axis of the row of turbulence holes 1104 located in the middle region of the stirring surface of the auxiliary stirring section 1103 is set horizontally. The hole axis of the row of turbulence holes 1104 located in the top region of the stirring surface of the auxiliary stirring section 1103 is inclined downward. The hole axis of the row of turbulence holes 1104 located in the bottom region of the stirring surface of the auxiliary stirring section 1103 is inclined upward. The downward and upward inclined hole axes form inclined channel structures. After the material flows through the channels with different inclined directions, three obliquely intersecting jets are formed, namely, the downward inclined jet in the top region, the horizontal jet, and the upward inclined jet in the bottom region. The three jets interact and superimpose to form turbulence, thereby improving the fluidity and dispersion of the mixture in the inner cavity of the vessel body 1.

[0039] like Figure 4 As shown, the turbulence orifice 1104 has a conical orifice structure. The orifice diameter of the turbulence orifice 1104 located on the stirring surface opposite to the rotation direction of the stirring shaft 10 is larger than the orifice diameter of the turbulence orifice 1104 located on the stirring surface with the rotation direction of the stirring shaft 10. The conical orifice structure further changes the material flow velocity through the turbulence orifice 1104, intensifying the turbulence.

[0040] The diameters of both orifices of the turbulent flow orifice 1104 are within the optimal diameter range of the orifice 1104, which is calculated based on the following method: First, according to the continuous flow theory, the volumetric flow rate Q of the jet has the following relationship with the orifice diameter d: Q = Av, where A is the orifice cross-sectional area and v is the jet velocity. Second, according to the momentum conservation theory, the jet output momentum matches the blade rotation speed ω, shape factor, and fluid density ρ, i.e., Aρv. 2 =Cρω 2 r 2 Where C is the blade shape factor and r is the blade radius. For a given blade rotational speed, the optimal diameter range of the turbulence orifice 1104 is calculated by measuring or calculating the matching jet velocity and then substituting it into the above two equations. For the blade shape factor of a standard straight blade, the corresponding C value can be obtained by consulting a mechanical handbook, which is generally 0.25 to 0.4. For non-standard shaped blades, the equivalent C value can be obtained by the following method: C = Cl / 2π, where Cl is the lift coefficient of the blade.

[0041] Specifically, such as Figure 5As shown, the vortex blade 12 also includes a base portion 1201. The upper part of the base portion 1201 is a frustum-shaped structure, and the lower part of the base portion 1201 is an inverted frustum-shaped structure. The middle part of the base portion 1201 is provided with a base mounting hole that penetrates the frustum-shaped structure and the inverted frustum-shaped structure. The base portion 1201 is sleeved on the outside of the stirring shaft 10 and fixedly connected to the stirring shaft 10. Multiple vortex blade portions 1202 are distributed at intervals on the surface of the frustum-shaped structure with the axis of the base portion 1201 as the center. The distance between the tops of adjacent vortex blade portions 1202 is smaller than the distance between the bottoms of adjacent vortex blade portions 1202.

[0042] The swivel section 1202 includes a front curved section 12021 and a rear curved section 12022. The front curved section 12021 extends from the top of the frustum structure to the junction of the frustum structure and the inverted frustum structure and connects with the rear curved section 12022. The end of the rear curved section 12022 extends to the junction of the frustum structure and the inverted frustum structure. The distance between the front curved sections 12021 of adjacent swivel sections 12022 is smaller than the distance between the rear curved sections 12022 of adjacent swivel sections 12022.

[0043] like Figure 6 As shown, the second embodiment of the present invention also discloses a reactor for the production of environmentally friendly modified melamine resin. The technical solution is the same as that of the first embodiment, except that the reactor for the production of environmentally friendly modified melamine resin further includes a condensation reflux device. The condensation reflux device includes a vertical condenser 13, a horizontal condenser 14, a water distributor 15, and a reflux pipe 16. The bottom of the vertical condenser 13 is connected to the top of the vessel body 1, and the top of the vertical condenser 13 is connected to the water distributor 15 through the horizontal condenser 14. The upper part of the water distributor 15 is connected to the top of the vessel body 1 through the reflux pipe 16.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A reactor for the production of environmentally friendly modified melamine resin, characterized in that: The reactor used for the production of environmentally friendly modified melamine resin includes: The reaction apparatus includes a vessel body (1), a feed inlet (2) and a discharge outlet (3), wherein the feed inlet (2) is located at the top of the vessel body (1) and the discharge outlet (3) is located at the bottom of the vessel body (1); The stirring device includes a drive motor (8), a transmission component (9), a stirring shaft (10), multiple stirring blades (11), and multiple vortex blades (12). The drive motor (8) and the transmission component (9) are both located on the top of the vessel body (1). The output end of the drive motor (8) is fixedly connected to the stirring shaft (10) through the transmission component (9). The stirring shaft (10) is rotatable relative to the vessel body (1), and at least part of the stirring shaft (10) is located inside the vessel body (1). The stirring blades (11) are arranged in pairs on the stirring shaft (10), and adjacent pairs of stirring blades (11) move along the stirring shaft (10). The axial direction has a spacing, and each stirring blade (11) has multiple turbulence holes (1104) on the stirring surface at the end away from the stirring shaft (10). The vortex blade (12) is disposed on the stirring shaft (10) and is staggered with the stirring blade (11) in the axial direction of the stirring shaft (10). The number of vortex blades (12) matches the number of stirring blades (11). Each vortex blade (12) is located below a stirring blade (11). The vortex blade (12) has multiple inclined swirl sections (1202). The inclination direction of the swirl section (1202) forms an acute angle with the axial direction of the stirring shaft (10). A heating device is provided outside the vessel body (1) and covers at least part of the outer wall of the lower part of the vessel body (1) and at least part of the outer wall of the bottom of the vessel body (1). The heating device is provided with a steam inlet (6) for introducing steam and a steam outlet (7) for discharging steam. The stirring blade (11) includes a retaining part (1101), a main stirring part (1102), and an auxiliary stirring part (1103) that are fixedly connected in sequence. The retaining part (1101) is connected to the outer wall of the stirring shaft (10). The stirring surface of the main stirring part (1102) is larger than the stirring surface of the auxiliary stirring part (1103). The turbulence hole (1104) is located on the stirring surface of the auxiliary stirring part (1103). The connection between the main stirring part (1102) and the auxiliary stirring part (1103) is a bent structure. The main stirring part (1102), the auxiliary stirring part (1103), and the edge of the bent structure are all provided with folded wings (1105). The turbulence holes (1104) are provided in at least three rows. The hole axis of at least one row of turbulence holes (1104) located in the middle region of the stirring surface of the auxiliary stirring part (1103) is set horizontally, the hole axis of at least one row of turbulence holes (1104) located in the top region of the stirring surface of the auxiliary stirring part (1103) is inclined downward, and the hole axis of at least one row of turbulence holes (1104) located in the bottom region of the stirring surface of the auxiliary stirring part (1103) is inclined upward.

2. The reactor for producing environmentally friendly modified melamine resin according to claim 1, characterized in that: The turbulence hole (1104) is a conical hole structure. The diameter of the turbulence hole (1104) located on the stirring surface opposite to the rotation direction of the stirring shaft (10) is larger than the diameter of the turbulence hole (1104) located on the stirring surface in the same direction as the rotation direction of the stirring shaft (10).

3. The reactor for producing environmentally friendly modified melamine resin according to claim 1, characterized in that: The vortex blade (12) also includes a base part (1201), the upper part of the base part (1201) is a frustum structure, the lower part of the base part (1201) is an inverted frustum structure, the middle part of the base part (1201) is provided with a base mounting hole that penetrates the frustum structure and the inverted frustum structure, the base part (1201) is sleeved on the outside of the stirring shaft (10) and fixedly connected to the stirring shaft (10).

4. The reactor for producing environmentally friendly modified melamine resin according to claim 3, characterized in that: Multiple spiral blades (1202) are distributed at intervals on the surface of the frustum structure with the axis of the base (1201) as the center, and the distance between the tops of adjacent spiral blades (1202) is smaller than the distance between the bottoms of adjacent spiral blades (1202).

5. A reactor for the production of environmentally friendly modified melamine resin according to claim 3 or 4, characterized in that: The swivel section (1202) includes a front curved section (12021) and a rear curved section (12022). The front curved section (12021) extends from the top of the frustum structure to the junction of the frustum structure and the inverted frustum structure and connects with the rear curved section (12022). The end of the rear curved section (12022) extends to the junction of the frustum structure and the inverted frustum structure. The distance between the front curved sections (12021) of adjacent swivel sections (1202) is smaller than the distance between the rear curved sections (12022) of adjacent swivel sections (1202).

6. The reactor for producing environmentally friendly modified melamine resin according to claim 1, characterized in that: The transmission component (9) includes a gearbox (901), a first coupling (902), a transmission shaft (903), and a second coupling (904). The output end of the drive motor (8) is detachably and fixedly connected to one end of the transmission shaft (903) through the gearbox (901) and the first coupling (902). The other end of the transmission shaft (903) is detachably and fixedly connected to the top end of the stirring shaft (10) through the second coupling (904).

7. The reactor for producing environmentally friendly modified melamine resin according to claim 1, characterized in that: The heating device includes a steam coil (4) and insulation cotton (5). The steam coil (4) is fixed to the outer wall of the vessel body (1) in a circumferential manner. The steam inlet (6) and the steam outlet (7) are respectively located at both ends of the steam coil (4). The insulation cotton (5) covers the outside of the steam coil (4) and is fixedly connected to the outer wall of the vessel body (1).

8. A reactor for the production of environmentally friendly modified melamine resin according to claim 1, characterized in that: The reactor for producing environmentally friendly modified melamine resin also includes a condensation reflux device, which includes a vertical condenser (13), a horizontal condenser (14), a water distributor (15), and a reflux pipe (16). The bottom of the vertical condenser (13) is connected to the top of the vessel body (1), and the top of the vertical condenser (13) is connected to the water distributor (15) through the horizontal condenser (14). The upper part of the water distributor (15) is connected to the top of the vessel body (1) through the reflux pipe (16).

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