Distillation kettle with built-in vapor-liquid separation and defoaming structure

Abstract

The utility model discloses a distillation kettle with built-in steam-liquid separation and defoaming structure relates to distillation equipment field, including the kettle body, heating part, set in the steam export of kettle body top, and the upper space fixed mounting of kettle body inside has a steam-liquid separation inner part, steam-liquid separation inner part includes umbrella shape silk screen defoaming cap, conical defoaming grid and flow guide piece that are coaxially arranged and fixedly connected from top to bottom in turn, the projection area of umbrella shape silk screen defoaming cap completely covers the conical defoaming grid below, and the conical defoaming grid is a reverse conical frame, and its taper surface is formed by a plurality of interval arrangement's grid strip, and the flow guide piece is a cylindrical structure, and its bottom center is equipped with a downward protruding flow guide cone, realize primary separation through flow guide piece, and the conical defoaming grid carries out mechanical defoaming and impact separation, and umbrella shape silk screen defoaming cap completes surface adsorption fine separation, and three -stage synergistic effect realizes the step -by -step high -efficient removal to steam droplet and foam, and the separation effect is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of distillation equipment technology, and in particular to a distillation kettle with a built-in vapor-liquid separation and defoaming structure. Background Technology

[0002] Distillation, as a classic separation and purification technique, is widely used in chemical, pharmaceutical, and food industries. The distillation vessel is its core equipment. During operation, the vigorous boiling of the liquid often results in the formation of vapor containing a large number of droplets and foam. These entrained materials enter the condensation system with the vapor, causing a series of problems such as product contamination, decreased yield, and increased energy consumption, seriously affecting separation efficiency and final product quality.

[0003] To address the aforementioned issues, existing technologies typically employ a separate vapor-liquid separator or demister connected in series outside the distillation vessel for post-treatment of the steam exiting the vessel. While this external approach can improve steam purity to some extent, it significantly increases equipment costs, floor space, and pipeline resistance. Furthermore, the separation effect remains unsatisfactory for easily foaming materials. Some technologies have attempted to install simple baffles or wire mesh inside the vessel, but their structures are relatively simplistic, resulting in limited separation efficiency, particularly ineffective handling of foam. Moreover, the separated liquid is prone to secondary entrainment due to steam scouring, leading to unstable separation performance.

[0004] Therefore, there is an urgent need for a comprehensive solution that is integrated inside the distillation vessel, has a compact structure, can simultaneously achieve efficient foam breaking and vapor-liquid separation, and can effectively prevent secondary entrainment. Utility Model Content

[0005] Purpose of the invention: The purpose of this utility model is to provide a distillation kettle with a built-in vapor-liquid separation and defoaming structure. By integrating a multi-stage synergistic separation and defoaming structure, it effectively solves the problems of vapor entrainment of droplets and foam, as well as secondary entrainment of separated liquid, thereby achieving efficient purification of steam and improving product purity and operational stability.

[0006] Technical solution:

[0007] A distillation vessel with built-in vapor-liquid separation and defoaming structure includes a vessel body, a heating element, a steam outlet disposed at the top of the vessel body, and a vapor-liquid separation internal component fixedly installed in the upper space inside the vessel body;

[0008] The vapor-liquid separation internals include an umbrella-shaped wire mesh demister cap, a conical defoaming grid, and a flow guide, which are coaxially arranged and fixedly connected from top to bottom;

[0009] The projected area of ​​the umbrella-shaped wire mesh defoaming cap completely covers the conical defoaming grid plate below it.

[0010] The conical defoaming grid is an inverted conical frame, and its conical surface is composed of several spaced grid strips;

[0011] The flow guide is a cylindrical structure with a downward-protruding flow guide cone at the center of its bottom.

[0012] Furthermore, the conical foam-breaking grid plate has a double-layer structure, and the grid strips on the two layers of the grid plate are staggered in radial projection.

[0013] Furthermore, a vertical drip channel is provided on the inner wall of the vessel at the location of the vapor-liquid separation internal component. The upper end of the drip channel extends to below the umbrella-shaped wire mesh cover, and the lower end of the drip channel extends to below the conical defoaming grid plate. The lower edge of the umbrella-shaped wire mesh defoaming cap is provided with an umbrella-shaped guide ring that surrounds it, which is used to guide the captured liquid to the drip channel on the inner wall of the vessel. The bottom large-diameter edge of the conical defoaming grid plate is provided with a conical guide ring that surrounds it, which is used to guide the captured liquid to the drip channel on the inner wall of the vessel.

[0014] Furthermore, multiple drip channels are provided at equal angles along the circumferential direction of the inner wall of the vessel.

[0015] Furthermore, the internal space of the vessel body is a variable diameter structure, wherein the diameter of the upper section where the gas-liquid separation internals are installed is smaller than the diameter of the lower heating section.

[0016] Furthermore, the heating component includes a heating jacket coaxially sleeved on the outside of the vessel body, and the heating jacket is provided with a medium inlet and a medium outlet.

[0017] Furthermore, the flow guide is fixedly connected to the inner wall of the vessel via a support plate.

[0018] Furthermore, the umbrella-shaped wire mesh demister cap and the conical defoaming grid are fixedly connected to the inner wall of the reactor.

[0019] Beneficial effects:

[0020] 1. Primary separation is achieved through flow guides, mechanical foam breaking and collision separation is performed by conical defoaming grids, and fine separation is completed by surface adsorption by umbrella-shaped wire mesh defoaming caps. The three-stage synergistic effect realizes the step-by-step efficient removal of droplets and foam in steam, with significant separation effect.

[0021] 2. By using the umbrella-shaped and conical guide rings, the liquid separated at each stage can be precisely guided into the drip channel on the vessel wall, allowing the liquid to flow back to the bottom of the vessel along the protected path. This completely avoids the liquid being re-entrained by the rising steam during the dripping process, ensuring the stability of the separation effect.

[0022] 3. The high-efficiency separation structure is integrated into the reactor, eliminating the need for an external separator, simplifying the process, and reducing equipment costs, pipeline resistance, and energy consumption. The variable-diameter reactor design further optimizes the steam velocity and flow field distribution, improving the overall efficiency of the built-in separator.

[0023] 4. The conical defoaming grid adopts a unique staggered double-layer design, which provides a larger passage area and a more complex foam shearing path while ensuring high defoaming efficiency, significantly reducing the risk of clogging and making it particularly suitable for the distillation process of easily foaming materials. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the flow guide component of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the conical foam-breaking grid plate of this utility model. Detailed Implementation

[0028] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] like Figure 1-4 As shown, a distillation vessel with a built-in vapor-liquid separation and defoaming structure includes a vessel body 1, a heating component 11, and a steam outlet 12 disposed on the top of the vessel body 1. A vapor-liquid separation internal component 2 is fixedly installed in the upper space inside the vessel body 1. The internal component achieves efficient purification of steam through a multi-stage separation mechanism.

[0031] The vapor-liquid separation internal component 2 includes an umbrella-shaped wire mesh demister cap 21, a conical defoaming grid 22, and a flow guide 23 arranged and fixedly connected coaxially from top to bottom; this top-down arrangement forms a gradual separation gradient, and the steam passes through different functional separation units in sequence during its ascent.

[0032] The projected area of ​​the umbrella-shaped wire mesh demister cap 21 completely covers the conical defoaming grid plate 22 below it; this design ensures that all rising steam must pass through the final fine filtration of the wire mesh layer, avoiding steam short-circuiting and ensuring separation effect.

[0033] The conical defoaming grid 22 is an inverted conical frame, the conical surface of which is composed of several spaced grid strips 221; this structure utilizes the collision effect between steam and grid strips to achieve droplet separation, while the conical design increases the effective separation area and reduces the steam flow rate.

[0034] The guide element 23 is a cylindrical structure with a downwardly protruding guide cone 231 at the center of its bottom. The guide cone can guide the rising steam flow from the center to the surrounding areas, allowing it to enter the flow channel evenly and creating favorable conditions for subsequent separation.

[0035] The conical defoaming grid 22 has a double-layer structure, and the grid strips on the two layers are staggered in radial projection. This staggered arrangement forms a complex labyrinthine channel, which greatly increases the probability of steam colliding with the grid and significantly improves defoaming and separation efficiency. Understandably, the grid is not limited to two layers when it is set.

[0036] A vertical drip channel 24 is provided on the inner wall of the vessel body 1 at the location of the vapor-liquid separation internal component 2. The upper end of the drip channel 24 extends below the umbrella-shaped wire mesh cover 212, and the lower end extends below the conical defoaming grid plate 22. The lower edge of the umbrella-shaped wire mesh defoaming cap 21 is provided with an umbrella-shaped guide ring that surrounds it, using its height to guide the captured liquid to the drip channel 24 on the inner wall of the vessel body 1. The bottom large-diameter edge of the conical defoaming grid plate 22 is provided with a conical guide ring that surrounds it, using its height to guide the captured liquid to the drip channel 24 on the inner wall of the vessel body 1. This complete liquid guiding system ensures that the separated liquid can return to the bottom of the vessel in an orderly manner, effectively preventing secondary entrainment.

[0037] Multiple drip channels 24 are arranged at equal angles along the circumference of the inner wall of the vessel body 1. The arrangement of multiple drip channels ensures the uniformity of liquid reflux and avoids local liquid accumulation.

[0038] The internal space of the vessel body 1 has a variable diameter structure, where the diameter of the upper section where the vapor-liquid separation internal component 2 is installed is smaller than the diameter of the lower heating section. This variable diameter design increases the steam flow rate in the upper part, which is beneficial to improving the efficiency of the wire mesh demister, while the larger diameter in the lower part provides ample evaporation space.

[0039] The heating component 11 includes a heating jacket coaxially sleeved around the lower exterior of the vessel body 1, with a medium inlet and a medium outlet provided on the heating jacket. Jacket heating provides a uniform heating effect and avoids localized overheating.

[0040] The flow guide 23 is fixedly connected to the inner wall of the vessel body 1 via a support plate 232. This connection method ensures structural stability while minimizing interference with steam flow.

[0041] The umbrella-shaped wire mesh demister cap 21 and the conical defoaming grid plate 22 are fixedly connected to the inner wall of the vessel body 1. The overall fixing method ensures the structural integrity of the equipment during operation.

[0042] During operation, the material is heated at the bottom of the vessel to generate steam. The steam first enters the guide vane 23, where it forms a rotating airflow under the synergistic action of the spiral guide vanes and guide cone 231, achieving preliminary vapor-liquid separation using centrifugal force. The steam then passes through the conical defoaming grid 22, whose double-layered staggered grid structure effectively breaks up foam and captures larger droplets. Finally, the steam reaches the umbrella-shaped wire mesh demister cap 21, where fine droplets are captured by the wire mesh, completing fine separation. The dry, clean steam is discharged from the top outlet 12. The liquids separated at each stage are introduced into the drip channel 24 on the vessel wall through corresponding guide rings, safely returning to the bottom of the vessel along the channel, completing the entire separation cycle. This integrated design achieves efficient vapor-liquid separation and defoaming within a single device, while effectively avoiding secondary entrainment.

[0043] The embodiments described above are merely illustrative of certain implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A distillation vessel with a built-in vapor-liquid separation and defoaming structure, comprising a vessel body (1), a heating element (11), and a steam outlet (12) disposed at the top of the vessel body (1), characterized in that, A vapor-liquid separation internal component (2) is fixedly installed in the upper space inside the vessel body (1); The vapor-liquid separation internal component (2) includes an umbrella-shaped wire mesh demister cap (21), a conical defoaming grid (22), and a flow guide (23) arranged and fixedly connected coaxially from top to bottom; The projected area of ​​the umbrella-shaped wire mesh defoaming cap (21) completely covers the cone-shaped defoaming grid plate (22) below it; The conical defoaming grid (22) is an inverted conical frame, and its conical surface is composed of several spaced grid strips (221); The guide element (23) is a cylindrical structure, and a downwardly protruding guide cone (231) is provided at the center of its bottom.

2. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: The conical foam-breaking grid (22) has a double-layer structure, and the grid strips on the two layers are staggered in radial projection.

3. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: A vertical drip channel (24) is provided on the inner wall of the vessel body (1) at the position of the vapor-liquid separation internal component (2). The upper end of the drip channel (24) extends to the bottom of the umbrella-shaped wire mesh cover (212), and the lower end of the drip channel (24) extends to the bottom of the conical defoaming grid plate (22). The lower edge of the umbrella-shaped wire mesh defoaming cap (21) is provided with an umbrella-shaped guide ring around it, which is used to guide the captured liquid to the drip channel (24) on the inner wall of the vessel body (1). The bottom large diameter edge of the conical defoaming grid plate (22) is provided with a conical guide ring around it, which is used to guide the captured liquid to the drip channel (24) on the inner wall of the vessel body (1).

4. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 3, characterized in that: The drip channel (24) is provided in multiple ways along the inner wall of the vessel body (1) at equal angles.

5. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: The internal space of the vessel body (1) is a variable diameter structure, and the diameter of the upper section where the gas-liquid separation internal component (2) is installed is smaller than the diameter of the lower heating section.

6. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: The heating component (11) includes a heating jacket coaxially sleeved on the outside of the vessel body (1) below, and the heating jacket is provided with a medium inlet and a medium outlet.

7. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: The flow guide (23) is fixedly connected to the inner wall of the vessel body (1) via a support plate (232).

8. The distillation vessel with built-in vapor-liquid separation and defoaming structure according to claim 1, characterized in that: The umbrella-shaped wire mesh defoaming cap (21) and the conical defoaming grid plate (22) are fixedly connected to the inner wall of the vessel body (1).

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