Crude benzene distillation equipment

Abstract

The utility model discloses crude benzene distillation equipment, and relates to the technical field of crude benzene production, in particular to the crude benzene distillation equipment, which comprises a condensing component, an evaporating tank, a steam conveying component, a heat conducting plate and a driving component, a communicating pipe is fixedly arranged on the top wall of the evaporating tank, and the communicating pipe is communicated with the evaporating tank; one end, far away from the evaporating tank, of the communicating pipe is fixedly mounted with the condensing part; by arranging the spiral coil pipe and the spray holes, steam can be uniformly sprayed into crude benzene liquid in the evaporation tank in a spiral manner, so that the contact area and the contact time of the steam and the crude benzene liquid are greatly increased. Compared with the prior art, the spiral injection mode can more effectively promote the vaporization of the crude benzene liquid, so that the steam and the crude benzene liquid are more fully mixed, and the distillation efficiency is remarkably improved. Meanwhile, the lifting movement of the heat conducting plate is matched with the rotation of the rotating pipe, so that the crude benzene liquid can be further pushed to flow, the crude benzene liquid is more uniformly contacted with steam, and the distillation effect is further optimized.

Description

Technical Field

[0001] This utility model relates to the field of crude benzene production technology, specifically to a crude benzene distillation device. Background Technology

[0002] Crude benzene is an important chemical raw material, and the performance of distillation equipment in its production process has a crucial impact on product quality and production efficiency. In existing technologies, such as the crude benzene distillation equipment disclosed in utility model patent number 202323298568.X, a horizontal spiral movement of the stirring plate and the horizontal spiral distribution of the steam outlet ensure uniform and comprehensive contact between steam and rich oil, resulting in more thorough benzene removal from the rich oil and improving the distillation effect in the crude benzene production process. This equipment solves to some extent the problem of uneven contact between steam and rich oil in traditional distillation equipment, but some shortcomings still exist in practical applications.

[0003] First, the existing equipment uses a relatively simple steam delivery method, with steam directly contacting the rich oil through fixed vents. Although a horizontal spiral distribution design is adopted, insufficient local contact can still occur when the rich oil has poor fluidity, affecting distillation efficiency. Second, the existing equipment mainly relies on electric heating tubes and ceramic heat-conducting plates for heating. While this can heat the rich oil, the heat distribution is not uniform enough during the heating process, easily leading to local overheating or underheating of the rich oil, which in turn affects the quality of crude benzene.

[0004] To address the problems existing in the prior art, this utility model proposes a new technical solution for crude benzene distillation equipment, aiming to further improve distillation efficiency and optimize the quality of crude benzene. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a crude benzene distillation apparatus that solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a crude benzene distillation apparatus, comprising a condensing component, an evaporator, a steam conveying component, a heat-conducting plate, and a driving component. A connecting pipe is fixedly installed on the top wall of the evaporator, and the two are connected. The end of the connecting pipe furthest from the evaporator is fixedly installed to the condensing component, and the connecting pipe is connected to the condensing component. The steam conveying component comprises a spiral coil and a rotating pipe. The rotating pipe penetrates the upper side wall of the evaporator and the two are rotatably connected. The steam inlet end of the spiral coil is fixedly installed to the steam outlet end of the rotating pipe. Furthermore, the two are connected. The spiral coil is located inside the evaporator, and multiple spray holes facing the same direction are opened on the side wall of the spiral coil. The heat-conducting plate is longitudinally slidably installed on the inner side wall of the evaporator, and the interior of the evaporator and above the heat-conducting plate form a holding cavity for holding crude benzene liquid. The driving component is fixedly installed at the inner bottom of the evaporator. The driving component is connected to the heat-conducting plate through a transmission. The driving component drives the heat-conducting plate to move up and down, and the heat-conducting plate pushes the crude benzene liquid to move closer to or away from the spiral coil. The heat-conducting plate is connected to the rotating tube through a transmission. When the heat-conducting plate moves up and down, it drives the rotating tube to rotate.

[0009] Optionally, the steam conveying component further includes a friction ring, which is fitted onto the outer wall of the rotating tube and the two are fixedly connected.

[0010] Optionally, a friction plate is fixedly connected to the heat-conducting plate. The friction plate abuts against the friction ring during the lifting and lowering process, and the friction plate pushes the friction ring to rotate.

[0011] Optionally, the driving component includes a telescopic member, which is fixedly installed on the inner bottom wall of the evaporator, and the output shaft end of the telescopic member is fixedly installed on the lower surface of the heat-conducting plate.

[0012] Optionally, the telescopic component may be one of a servo electric cylinder, an electric push rod, or a hydraulic rod.

[0013] Optionally, a feed pipe is fixedly installed on the top wall of the evaporator and the two are connected, and a first electrically controlled valve is installed on the feed pipe; a drain pipe is fixedly installed on the middle and lower side wall of the evaporator and the two are connected, and a second control valve is installed on the drain pipe.

[0014] Optionally, a heating ring is fixedly installed on the lower surface of the heat-conducting plate.

[0015] (III) Beneficial Effects

[0016] This utility model provides a crude benzene distillation apparatus, which has the following beneficial effects:

[0017] 1. Compared with existing technologies, the distillation efficiency of crude benzene is improved. By setting up a spiral coil and nozzles, steam can be uniformly injected into the crude benzene liquid in the evaporator in a spiral pattern, greatly increasing the contact area and contact time between steam and crude benzene liquid. Compared with existing technologies, this spiral injection method can more effectively promote the vaporization of crude benzene liquid, making the mixing of steam and crude benzene liquid more thorough, thereby significantly improving distillation efficiency. At the same time, the lifting and moving of the heat-conducting plate and the rotation of the rotating tube can further promote the flow of crude benzene liquid, making its contact with steam more uniform, and further optimizing the distillation effect.

[0018] 2. Compared with existing technologies, the quality of crude benzene is optimized. The heating ring on the lower surface of the heat-conducting plate can uniformly heat the crude benzene liquid, avoiding the problem of unstable crude benzene quality caused by local overheating or underheating in existing technologies. During the distillation process, uniform heating enables more stable separation of the components in the crude benzene liquid, thereby improving the purity and quality of crude benzene. In addition, by controlling the lifting speed of the heat-conducting plate and the rotation speed of the rotating tube, the heating time and degree of heating of the crude benzene liquid can be precisely adjusted, further optimizing the crude benzene distillation process and ensuring product quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a crude benzene distillation device according to the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the evaporator in a crude benzene distillation apparatus according to the present invention;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a three-dimensional structural diagram of the pusher plate in a crude benzene distillation device according to the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the spiral coil in a crude benzene distillation device according to the present invention.

[0025] In the diagram: 1. Evaporator; 2. Feed pipe; 3. Drain pipe; 4. Connecting pipe; 5. Condensation component; 6. Expansion joint; 7. Heat-conducting plate; 8. Heating ring; 10. Friction plate; 11. Rotating tube; 12. Spiral coil; 13. Friction ring; 14. Spray nozzle. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0028] Please see Figures 1 to 5 This utility model provides a technical solution: a crude benzene distillation device, including a condenser component 5, an evaporator 1, a steam conveying component, a heat-conducting plate 7, and a driving component. The condenser component 5 adopts the condenser shown in Chinese patent application publication number CN221385253U.

[0029] A connecting pipe 4 is fixedly installed on the top wall of the evaporator 1 and the two are connected. The end of the connecting pipe 4 away from the evaporator 1 is fixedly installed with the condensing component 5 and the connecting pipe 4 is connected to the condensing component 5.

[0030] Evaporator 1 is used to hold crude benzene liquid, providing a location for the crude benzene distillation process. Connecting pipe 4 connects evaporator 1 and condenser 5, allowing steam to smoothly enter condenser 5 for condensation. Condenser 5 is used to condense the steam into crude benzene liquid, and is typically a condenser.

[0031] The steam conveying component includes a spiral coil 12 and a rotating pipe 11. The rotating pipe 11 passes through the upper side wall of the evaporator 1 and the two are rotatably connected. The steam inlet end of the spiral coil 12 is fixedly installed and the steam outlet end of the rotating pipe 11 is connected to it. The spiral coil 12 is located inside the evaporator 1. Multiple nozzles 14 facing the same direction are opened on the side wall of the spiral coil 12.

[0032] In this design, all turns of the spiral coil 12 are located in the same plane. Steam is introduced into the spiral coil 12 and injected into the crude benzene liquid in the evaporator 1 in a spiral shape through the nozzle 14, increasing the contact area and contact time between the steam and the crude benzene liquid. The rotating pipe 11 is connected to the spiral coil 12, providing a passage for the steam. The nozzle 14 is located on the side wall of the spiral coil 12, allowing the steam to be injected evenly into the crude benzene liquid.

[0033] A heating ring 8 is fixedly installed on the lower surface of the heat-conducting plate 7. The heat-conducting plate 7 is longitudinally slidably installed on the inner wall of the evaporator 1. The interior of the evaporator 1 and the area above the heat-conducting plate 7 form a holding cavity for crude benzene liquid. A driving component is fixedly installed at the inner bottom of the evaporator 1. The driving component is connected to the heat-conducting plate 7 for transmission. The driving component drives the heat-conducting plate 7 to move up and down, and the heat-conducting plate 7 pushes the crude benzene liquid closer to or away from the spiral coil 12. The heat-conducting plate 7 is connected to the rotating tube 11 for transmission. When the heat-conducting plate 7 moves up and down, it drives the rotating tube 11 to rotate (referring to partial rotation).

[0034] The rotating tube 11 rotates via a transmission connection with the heat-conducting plate 7. The heat-conducting plate 7 is longitudinally slidably mounted on the inner wall of the evaporator 1, and a heating ring 8 is fixedly mounted on its lower surface. The heating ring 8 heats the heat-conducting plate 7, which in turn uniformly heats the crude benzene liquid. The lifting and lowering movement of the heat-conducting plate 7 pushes the crude benzene liquid closer to or away from the spiral coil 12, while simultaneously rotating it via the transmission connection with the rotating tube 11. When the rotating tube 11 rotates partially, it causes the spiral coil 12 to sway, resulting in disordered diffusion of the steam ejected from the spiral coil 12, thus enhancing the effective contact between the steam and the crude benzene liquid. The heating ring 8 is fixedly mounted on the lower surface of the heat-conducting plate 7 to uniformly heat the crude benzene liquid, preventing localized overheating or underheating. A driving component drives the lifting and lowering movement of the heat-conducting plate 7.

[0035] Specifically, the steam conveying component also includes a friction ring 13, which is fitted onto the outer wall of the rotating tube 11 and the two are fixedly connected. A friction plate 10 is fixedly connected to the heat-conducting plate 7. The friction plate 10 abuts against the friction ring 13 during the lifting and lowering process, and the friction plate 10 pushes the friction ring 13 to rotate.

[0036] During the lifting and lowering process, the heat-conducting plate 7 pushes the friction plate 10 to lift and lower. The friction plate 10 contacts the friction ring 13 during the lifting and lowering process, and the friction plate 10 pushes the friction ring 13 to rotate locally. The friction ring 13 drives the rotating tube 11 to rotate locally, and the rotating tube 11 drives the spiral coil 12 to sway.

[0037] Specifically, the driving component includes a telescopic member 6, which is fixedly installed on the inner bottom wall of the evaporator 1, and the output shaft end of the telescopic member 6 is fixedly installed on the lower surface of the heat-conducting plate 7.

[0038] The telescopic component 6 is used to drive the heat-conducting plate 7 to move up and down. After the telescopic component 6 is activated, it drives the heat-conducting plate 7 to rise or fall.

[0039] More specifically, the telescopic component 6 includes, but is not limited to, one of a servo electric cylinder, an electric push rod, or a hydraulic rod. The telescopic component 6 is covered with a heat-resistant layer to prevent damage from high temperatures.

[0040] Specifically, a feed pipe 2 is fixedly installed on the top wall of the evaporator 1 and the two are connected, and a first electrically controlled valve is installed on the feed pipe 2. A drain pipe 3 is fixedly installed on the middle and lower side wall of the evaporator 1 and the two are connected, and a second control valve is installed on the drain pipe 3.

[0041] The feed pipe 2 is used to supply crude benzene liquid into the evaporator 1. The first electrically controlled valve is used to control the opening and closing of the feed pipe 2. The drain pipe 3 is used to discharge the benzene-free liquid from the evaporator 1. The second electrically controlled valve is used to control the opening and closing of the drain pipe 3. When the heat-conducting plate 7 descends below the inflow end of the drain pipe 3, the second electrically controlled valve is opened, and the benzene-free liquid in the evaporator 1 is discharged through the drain pipe 3.

[0042] In actual implementation, a sealing gasket is installed on the outer periphery of the heat-conducting plate 7 (that is, at the junction of the heat-conducting plate 7 and the inner bottom wall of the evaporator 1) to prevent crude benzene liquid from seeping down. The heating ring 8 adopts existing electric heating rings and related equipment on the market.

[0043] In operation, crude benzene liquid is first introduced into the holding chamber of evaporator 1 through feed pipe 2. The drive unit is activated, causing the heat-conducting plate 7 to slide longitudinally within evaporator 1. The lifting and lowering movement of the heat-conducting plate 7 pushes the crude benzene liquid closer to or away from the spiral coil 12, while simultaneously rotating the rotating tube 11 via a transmission connection. Steam enters the spiral coil 12 through the rotating tube 11 and is sprayed into the crude benzene liquid in evaporator 1 in a spiral shape from the nozzle 14, increasing the contact area and contact time between the steam and the crude benzene liquid. The heating ring 8 on the lower surface of the heat-conducting plate 7 uniformly heats the crude benzene liquid, promoting its vaporization. The vaporized crude benzene vapor enters the condensing unit 5 through the connecting pipe 4 for condensation, ultimately yielding the crude benzene product. By controlling the lifting speed of the heat-conducting plate 7 and the rotation speed of the rotating tube 11, the heating time and degree of heating of the crude benzene liquid can be precisely adjusted, further optimizing the distillation process and ensuring product quality.

[0044] In practical applications, the crude benzene distillation equipment of this invention can be further optimized and improved according to specific needs. For example, by adding temperature and pressure sensors, the temperature and pressure inside the evaporator 1 can be monitored in real time, enabling precise control of the distillation process. Furthermore, by optimizing the design of the spiral coil 12 and the nozzle 14, the contact effect between the steam and the crude benzene liquid can be further improved, thereby increasing distillation efficiency.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A crude benzene distillation apparatus, comprising a condenser (5), characterized in that: It also includes an evaporator (1), a steam conveying component, a heat-conducting plate (7), and a driving component. A connecting pipe (4) is fixedly installed on the top wall of the evaporator (1) and the two are connected. The end of the connecting pipe (4) away from the evaporator (1) is fixedly installed with the condensing component (5), and the connecting pipe (4) is connected with the condensing component (5). The steam conveying component includes a spiral coil (12) and a rotating pipe (11). The rotating pipe (11) penetrates the upper side wall of the evaporator (1) and the two are rotatably connected. The steam inlet end of the spiral coil (12) and the steam outlet end of the rotating pipe (11) are fixedly installed and connected. The spiral coil (12) is located inside the evaporator (1). Multiple nozzles (14) facing the same direction are opened on the side wall of the spiral coil (12). A heating ring (8) is fixedly installed on the lower surface of the heat-conducting plate (7). The heat-conducting plate (7) is longitudinally slidably installed on the inner wall of the evaporator (1). The interior of the evaporator (1) and above the heat-conducting plate (7) constitute a holding cavity for holding crude benzene liquid. The driving component is fixedly installed at the inner bottom of the evaporator (1). The driving component is connected to the heat-conducting plate (7) in a transmission manner. The driving component drives the heat-conducting plate (7) to move up and down. The heat-conducting plate (7) pushes the crude benzene liquid to move closer to or away from the spiral coil (12). The heat-conducting plate (7) is connected to the rotating tube (11) in a transmission manner. When the heat-conducting plate (7) moves up and down, it drives the rotating tube (11) to rotate.

2. The crude benzene distillation equipment according to claim 1, characterized in that: The steam conveying component also includes a friction ring (13), which is fitted onto the outer wall of the rotating tube (11) and the two are fixedly connected.

3. The crude benzene distillation equipment according to claim 2, characterized in that: A friction plate (10) is fixedly connected to the heat-conducting plate (7). The friction plate (10) abuts against the friction ring (13) during the lifting and lowering process, and the friction plate (10) pushes the friction ring (13) to rotate.

4. The crude benzene distillation equipment according to claim 1, characterized in that: The driving component includes a telescopic component (6), which is fixedly installed on the inner bottom wall of the evaporator (1). The output shaft end of the telescopic component (6) is fixedly installed on the lower surface of the heat-conducting plate (7).

5. The crude benzene distillation apparatus according to claim 4, characterized in that: The telescopic component (6) is one of a servo electric cylinder, an electric push rod, or a hydraulic rod.

6. The crude benzene distillation apparatus according to claim 1, characterized in that: A feed pipe (2) is fixedly installed on the top wall of the evaporator (1) and the two are connected. A first electric control valve is installed on the feed pipe (2). A drain pipe (3) is fixedly installed on the middle and lower side wall of the evaporator (1) and the two are connected. A second control valve is installed on the drain pipe (3).

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