Ammonia distillation tower for chemical engineering

Abstract

The utility model discloses an ammonia still for chemical engineering, and relates to the technical field of chemical equipment. The ammonia still for chemical engineering comprises an ammonia still body, the inner wall of the ammonia still body is fixedly connected with a supporting base and a connecting base, an inner cavity of the ammonia still body is provided with a liquid distributor and a fan-shaped packing layer, the outer surface of the ammonia still body is fixedly connected with a fixed shell, and a first gear is arranged in the connecting base; a motor is fixedly connected to the bottom of the inner surface of the fixed shell, a rotating shaft is fixedly connected to the output end of the motor, a second gear is fixedly connected to the top end of the rotating shaft, a scraper is fixedly connected to the lower surface of the first gear, and the outer surface of the scraper makes contact with the inner wall of the ammonia still body; according to the utility model, crystals or sediments attached to the wall surface can be scraped off, the service life of the tower body is prolonged, and only corresponding modules are disassembled when local fillers are blocked or corroded, so that the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to an ammonia stripping tower for chemical engineering. Background Technology

[0002] An ammonia stripping tower is a device used to separate ammonia gas and water from ammonia water. Its main working principle is based on the difference in relative volatility between ammonia and water, which is used to separate them within the tower. Specifically, ammonia water enters the stripping tower after passing through a preheater. Inside the tower, ammonia gas, due to its higher volatility, rises to the top, while the water remains at the bottom. The ammonia gas at the top enters a condenser for gas-water separation, resulting in ammonia gas with high purity, typically exceeding 95%.

[0003] The packing layer of existing ammonia stripping towers is mostly an integral structure. Replacement or cleaning requires shutdown and disassembly of the tower body, resulting in long maintenance cycles and high costs. Furthermore, after long-term operation, crystals or deposits are easily attached to the inner wall of the ammonia stripping tower, reducing heat transfer efficiency and requiring frequent chemical cleaning, which affects continuous production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an ammonia stripping tower for chemical engineering, thereby solving the existing problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ammonia stripping tower for chemical engineering, comprising an ammonia stripping tower body, a support base and a connecting base fixedly connected to the inner wall of the ammonia stripping tower body, a liquid distributor and a fan-shaped packing layer provided in the inner cavity of the ammonia stripping tower body, a fixed shell fixedly connected to the outer surface of the ammonia stripping tower body, a first gear provided inside the connecting base, a motor fixedly connected to the bottom of the inner surface of the fixed shell, a rotating shaft fixedly connected to the output end of the motor, a second gear fixedly connected to the top end of the rotating shaft, a scraper fixedly connected to the lower surface of the first gear, and the outer surface of the scraper contacting the inner wall of the ammonia stripping tower body.

[0006] Preferably, a feed pipe is fixedly connected to the outer surface of the ammonia stripping tower body, and the end of the feed pipe is connected to a liquid distributor.

[0007] Preferably, a gas phase discharge pipe is fixedly connected to the top of the ammonia stripping tower body, and a liquid phase discharge pipe is fixedly connected to the bottom of the ammonia stripping tower body.

[0008] Preferably, the liquid distributor is disposed above the fan-shaped packing layer, and the support base is disposed at the interval of the fan-shaped packing layer.

[0009] Preferably, an installation plate is fixedly connected to the outer surface of the fan-shaped packing layer, and the outer surface of the installation plate is provided with installation screws. The installation plate is connected to the outer surface of the ammonia stripping tower body through the installation screws.

[0010] Preferably, support bars are fixedly connected to the upper and lower sides of the first gear, and the outer surface of the support bars is slidably connected to the inside of the connecting seat, and the outer surface of the first gear meshes with the outer surface of the second gear.

[0011] Beneficial effects

[0012] This utility model provides an ammonia stripping tower for chemical engineering. It has the following beneficial effects:

[0013] (1) The ammonia stripping tower used in this chemical engineering uses a motor, a rotating shaft, a first gear, a second gear and a scraper to rotate the first gear driven by the motor, and then the second gear driven by the first gear to rotate, so that the scraper can remove the crystals or deposits attached to the wall, reducing the workload of cleaning the tower body and extending the service life of the tower body.

[0014] (2) The ammonia stripping tower used in this chemical engineering project, by setting multiple fan-shaped packing layers, can disassemble only the corresponding module when the local packing is blocked or corroded, without the need to shut down the whole machine or replace the entire packing layer due to local blockage or corrosion, thus reducing maintenance costs and reducing the workload of maintenance personnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the sector-shaped filler layer of this utility model;

[0018] Figure 4 This is a schematic diagram of the bottom structure of the ammonia stripping tower body of this utility model.

[0019] In the diagram: 1. Ammonia stripping tower body; 2. Feed pipe; 3. Liquid distributor; 4. Support base; 5. Fan-shaped packing layer; 6. Mounting plate; 7. Mounting screws; 8. Liquid phase discharge pipe; 9. Gas phase discharge pipe; 10. Fixed shell; 11. Connecting seat; 12. First gear; 13. Support bar; 14. Motor; 15. Rotating shaft; 16. Second gear; 17. Scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] like Figure 1-4 As shown, this utility model provides an ammonia stripping tower for chemical engineering, including an ammonia stripping tower body 1. A support base 4 and a connecting base 11 are fixedly connected to the inner wall of the ammonia stripping tower body 1. A liquid distributor 3 and a fan-shaped packing layer 5 are provided in the inner cavity of the ammonia stripping tower body 1. A fixed shell 10 is fixedly connected to the outer surface of the ammonia stripping tower body 1. A first gear 12 is provided inside the connecting base 11. A motor 14 is fixedly connected to the bottom of the inner surface of the fixed shell 10. A rotating shaft 15 is fixedly connected to the output end of the motor 14. A second gear 16 is fixedly connected to the top end of the rotating shaft 15. A scraper 17 is fixedly connected to the lower surface of the first gear 12. The outer surface of the scraper 17 is in contact with the inner wall of the ammonia stripping tower body 1.

[0023] Specifically, a feed pipe 2 is fixedly connected to the outer surface of the ammonia stripping tower body 1, and the end of the feed pipe 2 is connected to the liquid distributor 3.

[0024] Specifically, a gas discharge pipe 9 is fixedly connected to the top of the ammonia stripping tower body 1, and a liquid discharge pipe 8 is fixedly connected to the bottom of the ammonia stripping tower body 1.

[0025] Specifically, the liquid distributor 3 is positioned above the fan-shaped packing layer 5, and the support base 4 is positioned at the intervals of the fan-shaped packing layer 5.

[0026] Specifically, an installation plate 6 is fixedly connected to the outer surface of the fan-shaped packing layer 5, and an installation screw 7 is provided on the outer surface of the installation plate 6. The installation plate 6 is connected to the outer surface of the ammonia stripping tower body 1 through the installation screw 7.

[0027] Specifically, support bars 13 are fixedly connected to the upper and lower sides of the first gear 12, and the outer surface of the support bars 13 is slidably connected to the inside of the connecting seat 11. The outer surface of the first gear 12 meshes with the outer surface of the second gear 16.

[0028] The working principle and beneficial effects of the above embodiments.

[0029] In operation, the liquid enters the liquid distributor 3 from the feed pipe 2 and is evenly sprayed onto the surface of the fan-shaped packing layer 5. The gas phase rises from the reboiler at the bottom of the tower and comes into countercurrent contact with the liquid phase on the packing surface to achieve ammonia separation. The separated ammonia vapor enters the condensation system through the gas phase outlet pipe 9 at the top of the tower and is condensed and recovered as liquid ammonia. The residual waste liquid is discharged from the liquid phase outlet pipe 8 at the bottom of the tower. The packing layer consists of multiple fan-shaped packing layers 5. Each fan-shaped packing layer 5 is fixedly installed in the tower body 1 of the ammonia stripping tower by the mounting plate 6 and the mounting screws 7. A gap is reserved between multiple fan-shaped packing layers 5, and a support seat 4 is set at the gap to provide support for the fan-shaped packing layer 5 to enhance stability and facilitate installation. The motor 14 drives the rotating shaft 15 to rotate. The second gear 16 at the top of the rotating shaft 15 meshes with the first gear 12, driving the first gear 12 to rotate in the connecting seat 11. The scraper 17 is fixed on the lower surface of the first gear 12. When the first gear 12 rotates, the scraper 17 rotates along the inner wall of the tower body 1 of the ammonia stripping tower to scrape off the crystals or deposits attached to the wall surface.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ammonia stripping tower for chemical engineering, comprising an ammonia stripping tower body (1), characterized in that: The inner wall of the ammonia stripping tower body (1) is fixedly connected to a support seat (4) and a connecting seat (11). The inner cavity of the ammonia stripping tower body (1) is provided with a liquid distributor (3) and a fan-shaped packing layer (5). The outer surface of the ammonia stripping tower body (1) is fixedly connected to a fixed shell (10). The connecting seat (11) is provided with a first gear (12). The bottom of the inner surface of the fixed shell (10) is fixedly connected to a motor (14). The output end of the motor (14) is fixedly connected to a rotating shaft (15). The top end of the rotating shaft (15) is fixedly connected to a second gear (16). The lower surface of the first gear (12) is fixedly connected to a scraper (17). The outer surface of the scraper (17) is in contact with the inner wall of the ammonia stripping tower body (1).

2. The ammonia stripping tower for chemical engineering according to claim 1, characterized in that: The outer surface of the ammonia stripping tower body (1) is fixedly connected to a feed pipe (2), and the end of the feed pipe (2) is connected to a liquid distributor (3).

3. The ammonia stripping tower for chemical engineering according to claim 1, characterized in that: A gas phase discharge pipe (9) is fixedly connected to the top of the ammonia stripping tower body (1), and a liquid phase discharge pipe (8) is fixedly connected to the bottom of the ammonia stripping tower body (1).

4. The ammonia stripping tower for chemical engineering according to claim 1, characterized in that: The liquid distributor (3) is positioned above the fan-shaped packing layer (5), and the support base (4) is positioned at the intervals of the fan-shaped packing layer (5).

5. The ammonia stripping tower for chemical engineering according to claim 1, characterized in that: An installation plate (6) is fixedly connected to the outer surface of the fan-shaped packing layer (5). An installation screw (7) is provided on the outer surface of the installation plate (6). The installation plate (6) is connected to the outer surface of the ammonia stripping tower body (1) through the installation screw (7).

6. The ammonia stripping tower for chemical engineering according to claim 1, characterized in that: The first gear (12) is fixedly connected to the upper and lower sides with support bars (13), and the outer surface of the support bars (13) is slidably connected to the inside of the connecting seat (11). The outer surface of the first gear (12) meshes with the outer surface of the second gear (16).

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