An embedded evaporator

Abstract

This utility model discloses an embedded evaporator. The main cylinder has alternating ring plates and disc plates arranged in the middle. The ring plate includes a first plate with an annular hole in its center. The disc plate includes a second plate with the same diameter as the annular hole. The first plate has several first pipe holes, each corresponding to a liquid hole in the bottom or top plate. This utility model allows for more uniform medium flow into the evaporator, improving heat utilization efficiency and saving heat. The alternating arrangement of ring plates and disc plates reduces the triangular stagnation area, improving heat utilization efficiency. The small wave-shaped baffles reduce resistance, thereby reducing the energy consumption of the medium input device. Furthermore, the device achieves gas-liquid separation by setting a second clean port in the lower ring channel. When using steam as the heating medium, it facilitates the recovery of the steam heat source, saving energy and demonstrating good practicality.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, specifically an embedded evaporator. Background Technology

[0002] Sulfur trioxide evaporators are key equipment in the sulfuric acid production process. They are mainly used to evaporate fuming sulfuric acid or liquid sulfur trioxide into gaseous sulfur trioxide to meet the purity requirements of high-end chemical fields such as electronic-grade sulfuric acid and sulfonation reactions. In existing sulfur trioxide evaporators, the medium flows in or out from one side of the evaporator, resulting in uneven distribution of the medium. This requires more heat to achieve uniform boiling of liquid sulfur trioxide, leading to heat waste. Secondly, most of the baffles in existing sulfur trioxide evaporators adopt a semi-circular structure, causing the medium to flow in a large S-shape. The semi-circular baffles force the fluid to repeatedly turn, forming a large S-shaped path, generating vortices and creating triangular stagnation zones. This results in more than 30% of the heat exchange area not being effectively utilized. Furthermore, the repeated turning of the large S-shaped baffles leads to high body resistance and increased energy consumption of the medium input device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an embedded evaporator to address the shortcomings of the prior art, thereby solving at least one of the aforementioned technical problems.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An embedded evaporator includes a main cylinder, an upper cylinder, and a lower cylinder. The upper cylinder is arranged above the main cylinder, and a top plate is arranged between the main cylinder and the upper cylinder. The top plate is provided with a plurality of liquid holes, and the main cylinder and the upper cylinder are connected through the liquid holes. The top of the upper cylinder is closed. The lower cylinder is arranged below the main cylinder, and a bottom plate is arranged between the lower cylinder and the main cylinder. The bottom plate is provided with a plurality of liquid holes, and the main cylinder and the lower cylinder are connected through the liquid holes. The bottom of the lower cylinder is closed. A ring plate and a disc plate are alternately arranged in the middle of the main cylinder. The middle part of the ring plate includes a first plate body, and the middle part of the plate body is provided with an annular hole. The disc plate includes a second plate body, the diameter of which is the same as the diameter of the annular hole. The first plate body is provided with a plurality of first tube holes. The holes correspond to the liquid holes in the bottom plate and top plate. The second plate is provided with several second pipe holes, which correspond to the liquid holes in the bottom plate and top plate. Heat exchange tubes are installed in the first and second pipe holes. The two ends of the heat exchange tubes are respectively connected to the corresponding liquid holes in the bottom plate and top plate. An upper ring channel is provided on the upper outer side of the main cylinder. Several through holes are uniformly arranged in a ring on the upper side wall of the main cylinder, and the main cylinder is connected to the upper ring channel through the through holes. A medium inlet is provided on the side wall of the upper ring channel. A lower ring channel is provided on the lower outer side of the main cylinder. Several through holes are uniformly arranged in a ring on the lower side wall of the main cylinder, and the main cylinder is connected to the lower ring channel through the through holes. A medium outlet is provided on the side wall of the lower ring channel. A liquid inlet is provided on the side wall of the lower cylinder. An air outlet is provided on the upper side wall of the upper cylinder. A liquid outlet is provided on the lower side wall of the upper cylinder.

[0005] Furthermore, the heat exchange tubes are arranged in groups, with each group consisting of six heat exchange tubes arranged in a hexagonal pattern, and the groups of heat exchange tubes are evenly distributed.

[0006] Furthermore, a first tie rod is connected between the top plate and the bottom plate, and the first tie rod is connected to the ring plate.

[0007] Furthermore, a second tie rod is connected between the top plate and the bottom plate, and the second tie rod is connected to the disc plate.

[0008] Furthermore, the top of the upper cylinder is inclined.

[0009] Furthermore, a first manhole is provided on the side of the lower cylinder, and a second manhole is provided on the side of the upper cylinder.

[0010] Furthermore, a second row of clear openings is provided at the bottom of the lower ring channel.

[0011] Furthermore, a first row of clean openings is provided at the bottom of the lower cylinder.

[0012] The beneficial effects of this utility model are:

[0013] This invention features upper and lower ring channels, ensuring more uniform flow of the medium into the evaporator, thus improving heat utilization efficiency and saving heat consumption. The device employs an alternating arrangement of ring plates and disc plates to reduce the triangular stagnation zone, further enhancing heat utilization efficiency. Small wave-shaped baffles reduce resistance, thereby lowering the energy consumption of the medium input device. Furthermore, the device utilizes a second row of clean inlets in the lower ring channel to achieve gas-liquid separation. When using steam as the heating medium, it facilitates the recovery of the steam's heat source, saving energy and demonstrating good practicality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

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

[0016] Figure 2 This is a schematic diagram of the base plate and top plate structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the ring plate structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the disc structure of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] Main cylinder 1; bottom plate 2; top plate 3; ring plate 4; first plate 41; annular hole 42; first pipe hole 43; disc plate 5; second plate 51; second pipe hole 52; first pull rod 6; second pull rod 7; heat exchange tube 8; lower cylinder 9; liquid inlet 10; first drain outlet 11; first manhole 12; upper cylinder 13; gas outlet 14; liquid outlet 15; upper ring channel 16; medium inlet 17; lower ring channel 18; medium outlet 19; second drain outlet 20; liquid hole 21. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0027] Example 1: See Figures 1 to 4 This is a schematic diagram of the structure of this utility model, including a main cylinder 1, an upper cylinder 13, and a lower cylinder 9. The upper cylinder 13 is located above the main cylinder 1, and a top plate 3 is provided between the main cylinder 1 and the upper cylinder 13. The top plate 3 is provided with a plurality of liquid holes 21, and the main cylinder 1 and the upper cylinder 13 are connected through the liquid holes 21. The top of the upper cylinder 13 is closed. The lower cylinder 9 is located below the main cylinder 1, and a bottom plate 2 is provided between the lower cylinder 9 and the main cylinder 1. The bottom plate 2 is provided with a plurality of liquid holes 21, and the main cylinder 1 and the lower cylinder 9 are connected through the liquid holes 21. The bottom of the lower cylinder 9 is closed. The main cylinder 1 has alternating annular plates 4 and disc plates 5 arranged in the middle. The annular plate 4 includes a first plate 41 in the middle, with an annular hole 42 in the middle. The disc plate 5 includes a second plate 51, the diameter of which is the same as the diameter of the annular hole 42. The first plate 41 has several first pipe holes 43, each corresponding to a liquid hole 21 in the bottom plate 2 and top plate 3. The second plate 51 has several second pipe holes 52, each corresponding to a liquid hole 21 in the bottom plate 2 and top plate 3. Heat exchange tubes 8 are installed in both the first pipe holes 43 and the second pipe holes 52. The two ends of the heat pipe 8 are connected to the liquid holes 21 corresponding to the bottom plate 2 and the top plate 3, respectively. The two ends of the heat exchange pipe 8 are connected to the upper cylinder 13 and the lower cylinder 9, respectively. The annular plate 4 and the disc plate 5 are alternately arranged. The heat exchange medium flows in a small wave shape under the guidance of the annular plate 4 and the disc plate 5 after entering the interior of the main cylinder 1. The medium is guided by the disc plate 5 to collide with the dead corner position of the annular plate 4, forcing the fluid to roll up and down, eliminating dead zones, extending the effective heat exchange path, and greatly reducing the area of ​​the medium stagnation zone. An upper annular channel 16 is provided on the upper outer side of the main cylinder 1. The upper sidewall of the main cylinder 1 is uniformly arranged in annular shape. The main cylinder 1 has several through holes and is connected to the upper ring channel 16 through the through holes. The side wall of the upper ring channel 16 is provided with a medium inlet 17. The lower outer side of the main cylinder 1 is provided with a lower ring channel 18. The lower side wall of the main cylinder 1 is provided with several through holes evenly arranged in a ring and the main cylinder 1 is connected to the lower ring channel 18 through the through holes, so that the medium flows into the evaporator more evenly. The side wall of the lower ring channel 18 is provided with a medium outlet 19. The side wall of the lower cylinder 9 is provided with a liquid inlet 10. The upper side wall of the upper cylinder 13 is provided with a gas outlet 14. The lower side wall of the upper cylinder 13 is provided with a liquid outlet 15.

[0028] Specifically, several heat exchange tubes 8 are grouped together, with each group consisting of six heat exchange tubes 8 arranged in a hexagonal pattern. The several groups of heat exchange tubes 8 are evenly distributed, allowing the use of thinner heat exchange tubes 8 and improving heat exchange efficiency.

[0029] Specifically, a first tie rod 6 connects the top plate 3 and the bottom plate 2. The first tie rod 6 is connected to the ring plate 4 to support and fix the ring plate 4.

[0030] Specifically, a second tie rod 7 is connected between the top plate 3 and the bottom plate 2. The second tie rod 7 is connected to the disc plate 5 to support and fix the disc plate 5.

[0031] Specifically, the top of the upper cylinder 13 is tilted to facilitate the collection of sulfur trioxide gas.

[0032] Specifically, a first manhole 12 is provided on the side of the lower cylinder 9, and a second manhole is provided on the side of the upper cylinder 13, to facilitate maintenance.

[0033] Specifically, the bottom of the lower ring channel 18 is provided with a second row of clean ports 20 to achieve gas-liquid separation. When using steam as a heating medium, the heat source of the steam can be easily recovered.

[0034] Specifically, the bottom of the lower cylinder 9 is provided with a first drain port 11 to facilitate the drainage of liquid.

[0035] The principle of this utility model:

[0036] When steam is used as the heat exchange medium, the steam enters the upper ring channel 16 from the medium inlet 17 and enters the main cylinder 1 evenly from the upper ring channel 16. The alternating flow of the ring plate 4 and the disc plate 5 causes the steam to flow in a small wave shape and exchange heat with the liquid in the heat exchange tube 8. The steam enters the lower ring channel 18, and the condensed water flows out through the second clean port 20. The steam is recovered from the medium outlet 19.

[0037] Liquid sulfur trioxide containing impurities enters the lower cylinder 9 through the inlet pipe 10, and then enters the heat exchange tube 8 through the lower cylinder 9 for heat exchange. The sulfur trioxide gas in the liquid boils and evaporates, and is collected through the outlet pipe 14. The liquid sulfur trioxide enters the upper cylinder 13 through the heat exchange tube 8 and is discharged through the outlet pipe 15.

[0038] This invention, by setting up an upper ring channel 16 and a lower ring channel 18, ensures that the medium flows more evenly into the evaporator, improving heat utilization efficiency and saving heat usage. The device uses an alternating arrangement of ring plates 4 and disc plates 5 to reduce the triangular stagnation area and improve heat utilization efficiency. The small wave-shaped flow reduces resistance, thereby reducing the energy consumption of the medium input device. The device also achieves gas-liquid separation by setting a second row of clean ports 20 in the lower ring channel 18. When using steam as the heating medium, it can easily recover the heat source of the steam, saving energy and demonstrating good practicality.

[0039] The above are merely optional embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. An embedded evaporator characterized by: The system includes a main cylinder (1), an upper cylinder (13), and a lower cylinder (9). The upper cylinder (13) is located above the main cylinder (1). A top plate (3) is located between the main cylinder (1) and the upper cylinder (13). The top plate (3) has several liquid holes (21), and the main cylinder (1) and the upper cylinder (13) are connected through the liquid holes (21). The top of the upper cylinder (13) is closed. The lower cylinder (9) is located below the main cylinder (1). A bottom plate (2) is located between the lower cylinder (9) and the main cylinder (1). The bottom plate (2) has several liquid holes (21). The main cylinder (1) and the lower cylinder (9) are connected by a liquid hole (21). The bottom of the lower cylinder (9) is closed. The middle part of the main cylinder (1) is alternately provided with annular plates (4) and disc plates (5). The middle part of the annular plate (4) includes a first plate (41) with an annular hole (42) in the middle. The disc plate (5) includes a second plate (51) with the same diameter as the annular hole (42). The first plate (41) is provided with a plurality of first pipe holes (43), which are connected to the bottom plate (2) and the top plate (3). The second plate (51) is provided with several second pipe holes (52) corresponding to the liquid holes (21) of the bottom plate (2) and the top plate (3). The first pipe hole (43) and the second pipe hole (52) are each equipped with a heat exchange tube (8). The two ends of the heat exchange tube (8) are respectively connected to the liquid holes (21) of the bottom plate (2) and the top plate (3). The upper outer side of the main cylinder (1) is provided with an upper ring channel (16). The upper side wall of the main cylinder (1) is provided with several through holes evenly arranged in a ring and the main cylinder (1) is connected to the upper ring channel (16). The through holes are connected. The side wall of the upper ring channel (16) is provided with a medium inlet (17). The lower outer side of the main cylinder (1) is provided with a lower ring channel (18). The lower side wall of the main cylinder (1) is provided with several through holes evenly arranged in a ring and the main cylinder (1) and the lower ring channel (18) are connected through the through holes. The side wall of the lower ring channel (18) is provided with a medium outlet (19). The side wall of the lower cylinder (9) is provided with a liquid inlet (10). The upper side wall of the upper cylinder (13) is provided with a gas outlet (14). The lower side wall of the upper cylinder (13) is provided with a liquid outlet (15).

2. The embedded evaporator of claim 1, wherein: Several heat exchange tubes (8) are arranged in groups, each group of heat exchange tubes (8) has six tubes and is arranged in a hexagonal pattern, and the several groups of heat exchange tubes (8) are evenly distributed.

3. The embedded evaporator of claim 1, wherein: A first tie rod (6) is connected between the top plate (3) and the bottom plate (2), and the first tie rod (6) is connected to the ring plate (4).

4. The embedded evaporator of claim 1, wherein: A second tie rod (7) is connected between the top plate (3) and the bottom plate (2), and the second tie rod (7) is connected to the disc plate (5).

5. The embedded evaporator of claim 1, wherein: The top of the upper cylinder (13) is inclined.

6. The embedded evaporator of claim 1, wherein: The lower cylinder (9) has a first manhole (12) on its side, and the upper cylinder (13) has a second manhole on its side.

7. The embedded evaporator of claim 1, wherein: The bottom of the lower ring channel (18) is provided with a second exhaust port (20).

8. The embedded evaporator of claim 1, wherein: The bottom of the lower cylinder (9) is provided with a first exhaust port (11).

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