Acetic acid evaporator

Abstract

The utility model relates to the related technical field of acetic acid evaporators, and one embodiment of the utility model provides an acetic acid evaporator which comprises an evaporation tank and an inner hole cover, the inner hole cover is arranged in the evaporation tank, a sealing frame is fixed in the side surface of the evaporation tank, a condensation scraping assembly is arranged in the evaporation tank, and a base is arranged at the bottom in the evaporation tank. The uniform heating assembly is arranged on the base, the condensation scraping assembly comprises a rotating shaft, the rotating shaft is rotationally connected between the inner hole cover and the sealing frame, a cavity is formed in the rotating shaft, and a plurality of scraping frames are fixed to the outer surface of the rotating shaft and attached to the inner surface of the inner hole cover. By means of the technical scheme, the technical problems that in the prior art, liquid foam is attached to the inner wall of the evaporator and accumulated for a long time, equipment blockage is possibly caused, production continuity is affected, and equipment maintenance cost and downtime are increased are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of acetic acid evaporators, and more specifically, to an acetic acid evaporator. Background Technology

[0002] In the chemical production field, acetic acid, as an important organic chemical raw material, is widely used in many industries such as synthetic fibers, pharmaceuticals, pesticides, and food additives. Acetic acid evaporators play an indispensable role in the production, refining, and manufacturing of acetic acid and related products. Their main function is to concentrate, separate, and effectively remove other impurities from acetic acid solutions through evaporation.

[0003] Existing acetic acid evaporators have many problems in actual operation, which greatly affect production efficiency, product quality and equipment lifespan.

[0004] Regarding liquid foam removal, the internal structure of traditional acetic acid evaporators is not well-designed, allowing liquid foam to easily accumulate within the evaporation space. On one hand, this accumulated liquid foam is discharged with the steam, leading to impurities in the product, reducing the purity of the acetic acid, and affecting product quality. On the other hand, liquid foam adhering to the inner wall of the evaporator can cause blockages over time, affecting production continuity, increasing equipment maintenance costs, and downtime. Furthermore, existing cleaning methods often require stopping the machine and disassembling multiple components, which is cumbersome, time-consuming, and labor-intensive, severely impacting production progress.

[0005] In summary, existing acetic acid evaporators have significant shortcomings in terms of liquid foam removal and condensate drainage. There is an urgent need to develop a new type of acetic acid evaporator to solve these problems, improve the efficiency, quality, and economy of the acetic acid production process, and promote the development of related industries. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide an acetic acid evaporator, which solves the technical problem in the prior art where liquid droplets adhere to the inner wall of the evaporator, and long-term accumulation may lead to equipment blockage, affecting the continuity of production, increasing equipment maintenance costs and downtime.

[0007] According to one aspect, at least one embodiment of the present disclosure provides an acetic acid evaporator, comprising:

[0008] An evaporator and an inner perforated cover, wherein the inner perforated cover is disposed inside the evaporator;

[0009] A sealing frame and a condensation cleaning assembly are provided, wherein the sealing frame is fixed inside the side surface of the evaporator and the condensation cleaning assembly is disposed inside the evaporator.

[0010] A base and a uniform heating component, wherein the base is disposed at the bottom of the evaporator and the uniform heating component is disposed on the base;

[0011] The condensation cleaning assembly includes a rotating shaft, which is rotatably connected between the inner hole cover and the sealing frame. A cavity is opened inside the rotating shaft, and several cleaning frames are fixed on the outer surface of the rotating shaft. The cleaning frames are in contact with the inner surface of the inner hole cover.

[0012] As a further technical solution, the cleaning frame has a hollow structure inside, and a collection port is opened on the surface of the cleaning frame. The inside of the cleaning frame is connected to the cavity. A drive motor is provided on the outer surface of the sealing frame. A transmission wheel is provided at the output end of the drive motor and the lower end of the rotating shaft. The transmission wheels are connected by belt drive.

[0013] As a further technical solution, a suction pipe is rotatably connected to the lower end of the cavity, one end of the suction pipe is fixedly connected to the sealing frame, and an outer ring cavity is formed in the inner wall of the evaporator, with a drain hole formed at the top of the outer ring cavity.

[0014] As a further technical solution, a drain pipe is connected to the outer wall of the evaporator, the drain pipe is connected to the outer annular cavity, and a cleaning rod is provided at the lower end of the rotating shaft, the cleaning rod being in contact with the inner wall of the evaporator.

[0015] As a further technical solution, the uniform heating assembly includes several heating tubes, all of which are fixed on the base. An inner ring frame is provided on the inner wall of the evaporator, and a rotating frame is slidably connected in the inner ring frame.

[0016] As a further technical solution, an external gear is provided around the bottom outer side of the rotating frame, a second motor is provided at the bottom of the evaporator, a drive gear is provided at the output end of the second motor, the drive gear meshes with the external gear, and a number of push frames are provided around the inner surface of the rotating frame.

[0017] As a further technical solution, the push frame has an overall T-shaped structure.

[0018] As a further technical solution, the cross-section of the inner hole cover has a semi-circular structure.

[0019] As a further technical solution, a separation port is provided on the side surface of the base.

[0020] The beneficial effects of the embodiments disclosed herein are as follows:

[0021] 1. This disclosure provides efficient cleaning of liquid droplets, ensuring continuous production: The design of the condensation cleaning component effectively solves the problem of liquid droplet accumulation. The cleaning frame fits snugly against the inner surface of the inner shroud, and driven by the rotating shaft, it can promptly scrape off the liquid droplets on the inner shroud. The liquid droplets are collected through the collection port and cavity, and then discharged through the suction pipe, preventing the liquid droplets from being discharged with steam and affecting product purity. It also avoids the liquid droplets adhering to the inner wall and causing equipment blockage, reducing equipment maintenance costs and downtime, and ensuring continuous production.

[0022] 2. The present invention effectively discharges condensate and reduces energy waste: The condensate discharge system, consisting of the outer ring cavity of the inner wall of the evaporator, the drain hole, and the drain pipe, combined with the cleaning rod of the rotating shaft, can discharge condensate in a timely manner, avoiding energy waste caused by steam being discharged with the condensate, while maintaining stable internal pressure of the evaporator, thus improving evaporation efficiency and energy utilization.

[0023] 3. This disclosure achieves uniform heating and improves product quality: The uniform heating component, through the coordinated work of the heating tube, rotating frame and pushing frame, ensures that the acetic acid solution in the evaporator is heated evenly. The T-shaped structure of the pushing frame increases the contact area with the acetic acid, and the acetic acid solution is effectively stirred under the drive of the rotating frame, avoiding local overheating or uneven heating, ensuring the stability of the acetic acid evaporation process and improving product quality. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0026] Figure 2 This is an isometric drawing of the present disclosure;

[0027] Figure 3 This is an isometric sectional view of the present disclosure;

[0028] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0029] Figure 5 Appendix to this disclosure Figure 3 Enlarged view of part B in the middle section;

[0030] Figure 6 Appendix to this disclosure Figure 3 Enlarged view of part C in the middle;

[0031] In the diagram: 1. Evaporator; 2. Inner shroud; 3. Sealing frame; 4. Base; 5. Condensation cleaning assembly; 5-1. Rotating shaft; 5-2. Cavity; 5-3. Cleaning frame; 5-4. Collection port; 5-5. Drive motor; 5-6. Transmission wheel; 5-7. Suction pipe; 5-8. Outer annular cavity; 5-9. Drain hole; 5-10. Drain pipe; 5-11. Cleaning rod; 6. Uniform heating assembly; 6-1. Heating tube; 6-2. Inner annular frame; 6-3. Rotating frame; 6-4. External gear; 6-5. Second motor; 6-6. Drive gear; 6-7. Push frame; 7. Separation port. Detailed Implementation

[0032] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0033] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0034] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0035] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0037] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] like Figures 1-6 As shown, an acetic acid evaporator according to an embodiment of the present disclosure is included:

[0039] An evaporator 1 and an inner hole cover 2, wherein the inner hole cover 2 is disposed inside the evaporator 1;

[0040] The sealing frame 3 and the condensation cleaning assembly 5 are provided. The sealing frame 3 is fixed inside the side surface of the evaporator 1, and the condensation cleaning assembly 5 is disposed inside the evaporator 1.

[0041] The base 4 and the uniform heating component 6 are provided. The base 4 is disposed at the bottom of the evaporator 1 and the uniform heating component 6 is disposed on the base 4.

[0042] The condensation cleaning assembly 5 includes a rotating shaft 5-1, which is rotatably connected between the inner bore cover 2 and the sealing frame 3. A cavity 5-2 is formed inside the rotating shaft 5-1. Several cleaning frames 5-3 are fixed to the outer surface of the rotating shaft 5-1. The cleaning frames 5-3 are in contact with the inner surface of the inner bore cover 2. The cleaning frames 5-3 have a hollow internal structure and a collection port 5-4 on their surface. The interior of the cleaning frames 5-3 communicates with the cavity 5-2. A drive motor 5-5 is provided on the outer surface of the sealing frame 3, and the output end of the drive motor 5-5 is connected to the rotating shaft. Each of the 5-1 components has a drive wheel 5-6 at its lower end, which are connected by a belt drive. A suction pipe 5-7 is rotatably connected to the lower end of the cavity 5-2. One end of the suction pipe 5-7 is fixedly connected to the sealing frame 3. An outer ring cavity 5-8 is formed in the inner wall of the evaporator 1. A drain hole 5-9 is formed at the top of the outer ring cavity 5-8. A drain pipe 5-10 is connected to the outer wall of the evaporator 1 and communicates with the outer ring cavity 5-8. A cleaning rod 5-11 is provided at the lower end of the rotating shaft 5-1 and fits against the inner wall of the evaporator 1.

[0043] In some examples, a condensation cleaning assembly 5 is designed to effectively handle the liquid droplets on the inner wall of the evaporator 1. The core component of the condensation cleaning assembly 5 proposed in this embodiment is a rotating shaft 5-1, which is rotatably connected between the inner hole cover 2 and the sealing frame 3. This provides the basic support and structural conditions for the operation of the entire assembly. A cavity 5-2 is opened inside the rotating shaft 5-1, and several cleaning frames 5-3 are fixed on the outer surface of the rotating shaft 5-1. These cleaning frames 5-3 are in close contact with the inner surface of the inner hole cover 2. The scraping frame 5-3 has a hollow internal structure, and its surface has a collection port 5-4. The interior of the scraping frame 5-3 is connected to the cavity 5-2 of the rotating shaft 5-1. When the rotating shaft 5-1 rotates, the scraping frame 5-3 rotates accordingly, scraping off the condensate from the inner surface of the inner hole cover 2. This condensate is collected through the collection port 5-4 into the interior of the scraping frame 5-3, and then flows into the cavity 5-2 of the rotating shaft 5-1. A drive motor 5-5 is installed on the outer surface of the sealing frame 3. The output end of the drive motor 5-5 is connected to the rotating shaft 5-2. 1. Each end is equipped with a drive wheel 5-6, which is connected by a belt drive. The drive motor 5-5 drives the rotating shaft 5-1 to rotate via the belt drive, providing power for the scraping action and ensuring that the scraping frame 5-3 can work continuously and effectively. A suction pipe 5-7 is rotatably connected to the lower end of the cavity 5-2 of the rotating shaft 5-1. One end of the suction pipe 5-7 is fixedly connected to the sealing frame 3. The suction pipe 5-7 can be connected to a suction device to collect the liquid in the cavity 5-2 of the rotating shaft 5-1. The evaporator 1 has an outer annular cavity 5-8 formed in its inner wall. A drain hole 5-9 is located at the top of the outer annular cavity 5-8. A drain pipe 5-10 is connected to the outer wall of the evaporator 1 and communicates with the outer annular cavity 5-8. Condensate can flow into the outer annular cavity 5-8 through the drain hole 5-9 and then out of the evaporator 1 through the drain pipe 5-10, achieving effective condensate drainage. Furthermore, a cleaning rod 5-11 is installed at the lower end of the rotating shaft 5-1, and the cleaning rod 5-11 is in contact with the inner wall of the evaporator 1. During the rotation of the rotating shaft 5-1, the cleaning rod 5-11 cleans the inner wall of the evaporator 1, scraping away impurities and residues adhering to the inner wall, keeping the inner wall of the evaporator 1 clean, thereby ensuring the normal operation and efficiency of the evaporator 1.

[0044] like Figures 1-6 As shown, this embodiment proposes the uniform heating assembly 6, which includes a plurality of heating tubes 6-1, all of which are fixed on the base 4. An inner ring frame 6-2 is provided on the inner wall of the evaporator 1, and a rotating frame 6-3 is slidably connected in the inner ring frame 6-2. An external gear 6-4 is provided around the bottom outer side of the rotating frame 6-3. A second motor 6-5 is provided at the bottom of the evaporator 1, and a drive gear 6-6 is provided at the output end of the second motor 6-5. The drive gear 6-6 meshes with the external gear 6-4. A plurality of push frames 6-7 are provided around the inner surface of the rotating frame 6-3.

[0045] In some examples, to achieve uniform heating of the material inside the evaporator 1, a uniform heating component 6 is designed, comprising several heating tubes 6-1, all of which are fixed to the base 4. The heating tubes 6-1, as the main heating elements, generate heat and transfer it into the evaporator 1, providing an energy source for heating the material inside. An inner ring frame 6-2 is provided on the inner wall of the evaporator 1, and a rotating frame 6-3 is slidably connected within the inner ring frame 6-2. This sliding connection allows the rotating frame 6-3 to perform stable circular motion under the constraint of the inner ring frame 6-2. An external gear 6-4 is provided around the bottom outer circumference of the rotating frame 6-3. Simultaneously, a second motor 6-5 is provided at the bottom of the evaporator 1. A drive gear 6-6 is provided at the output end of the second motor 6-5, and the drive gear 6-6 meshes externally with the external gear 6-4. When the second motor 6-5… When the -5 starts, the drive gear 6-6 rotates, driving the external gear 6-4 at the bottom of the rotating frame 6-3 to rotate through external meshing. This causes the rotating frame 6-3 to move in a circle on the inner ring frame 6-2. Several push frames 6-7 are arranged around the inner surface of the rotating frame 6-3. During the rotation of the rotating frame 6-3, the push frames 6-7 rotate with it, stirring and pushing the material in the evaporator 1. In this way, the material in the tank can continuously flow and mix, so that all parts can fully contact the heat generated by the heating tube 6-1, avoiding local overheating or uneven heating. This achieves uniform heating of the material in the evaporator 1. Through the design of this uniform heating component 6, the heating performance of the evaporator 1 can be effectively improved, ensuring a more ideal heating effect of the material in the tank and meeting the actual needs of the production process.

[0046] For example, such as Figure 5 As shown, the pusher frame 6-7 has an overall T-shaped structure.

[0047] In some examples, the T-shaped structure increases the contact area between the pusher 6-7 and the acetic acid, thereby improving the stirring effect.

[0048] For example, such as Figure 3 As shown, the inner hole cover 2 has a semi-circular cross-section.

[0049] In some examples, the semi-circular structure can be used in conjunction with the 5-3 rotation of the scraper for a cleaning effect.

[0050] For example, such as Figure 3 As shown, a separation port 7 is provided on the side surface of the base 4.

[0051] In some examples, a separation port 7 is provided to discharge material that has accumulated at the bottom, thus preventing residue.

[0052] In practical use: Pour the acetic acid solution to be evaporated into the evaporator tank 1, and start the heating tube 6-1 of the uniform heating component 6 to heat the acetic acid solution. Simultaneously, start the second motor 6-5, driving the gear 6-6 to rotate the rotating frame 6-3. The pusher 6-7 on the inner surface of the rotating frame 6-3 rotates accordingly, stirring the acetic acid solution to ensure uniform heating and accelerate the evaporation process. During evaporation, liquid droplets will condense on the inner surface of the inner shroud 2. Start the drive motor 5-5 of the condensation cleaning component 5. The drive motor 5-5 drives the rotating shaft 5-1 to rotate via belt drive, and the cleaning frame 5-3 rotates accordingly, scraping off and collecting the liquid droplets on the inner surface of the inner shroud 2, which are then discharged through the cavity 5-2 and the suction pipe 5-7. The steam generated by evaporation rises, while the condensate flows into the outer annular cavity 5-8 through the drain hole 5-9, and then out of the evaporator tank 1 through the drain pipe 5-10. The cleaning rod 5-11 at the lower end of the rotating shaft 5-1 cleans the inner wall of the evaporator tank 1 during rotation, preventing impurities from adhering.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An acetic acid evaporator, characterized in that, include: An evaporator (1) and an inner shroud (2), wherein the inner shroud (2) is disposed inside the evaporator (1); A sealing frame (3) and a condensation cleaning assembly (5) are provided. The sealing frame (3) is fixed inside the side surface of the evaporator (1), and the condensation cleaning assembly (5) is disposed inside the evaporator (1). The base (4) and the uniform heating component (6) are provided on the base (4) at the bottom of the evaporator (1). The condensation cleaning assembly (5) includes a rotating shaft (5-1), which is rotatably connected between the inner hole cover (2) and the sealing frame (3). A cavity (5-2) is opened inside the rotating shaft (5-1), and a plurality of cleaning frames (5-3) are fixed on the outer surface of the rotating shaft (5-1). The cleaning frames (5-3) are in contact with the inner surface of the inner hole cover (2).

2. The acetic acid evaporator according to claim 1, characterized in that, The cleaning frame (5-3) has a hollow structure inside. A collection port (5-4) is opened on the surface of the cleaning frame (5-3). The interior of the cleaning frame (5-3) is connected to the cavity (5-2). A drive motor (5-5) is provided on the outer surface of the sealing frame (3). A transmission wheel (5-6) is provided at the output end of the drive motor (5-5) and the lower end of the rotating shaft (5-1). The transmission wheels (5-6) are connected by belt drive.

3. An acetic acid evaporator according to claim 2, characterized in that, The lower end of the cavity (5-2) is rotatably connected to a suction pipe (5-7), one end of which is fixedly connected to the sealing frame (3). An outer ring cavity (5-8) is opened in the inner wall of the evaporator (1), and a drain hole (5-9) is opened at the top of the outer ring cavity (5-8).

4. An acetic acid evaporator according to claim 3, characterized in that, The outer wall of the evaporator (1) is connected to a drain pipe (5-10), which is connected to the outer annular cavity (5-8). A cleaning rod (5-11) is provided at the lower end of the rotating shaft (5-1), and the cleaning rod (5-11) is in contact with the inner wall of the evaporator (1).

5. An acetic acid evaporator according to claim 1, characterized in that, The uniform heating component (6) includes several heating tubes (6-1), all of which are fixed on the base (4). The inner wall of the evaporator (1) is provided with an inner ring frame (6-2), and a rotating frame (6-3) is slidably connected in the inner ring frame (6-2).

6. An acetic acid evaporator according to claim 5, characterized in that, An external gear (6-4) is provided around the bottom outer side of the rotating frame (6-3). A second motor (6-5) is provided at the bottom of the evaporator (1). A drive gear (6-6) is provided at the output end of the second motor (6-5). The drive gear (6-6) meshes with the external gear (6-4). Several push frames (6-7) are provided around the inner surface of the rotating frame (6-3).

7. An acetic acid evaporator according to claim 6, characterized in that, The push frame (6-7) has an overall T-shaped structure.

8. An acetic acid evaporator according to claim 1, characterized in that, The inner hole cover (2) has a semi-circular cross-section.

9. An acetic acid evaporator according to claim 1, characterized in that, The base (4) has a separation port (7) on its side surface.

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