A vapor gradient utilization system

Abstract

The utility model discloses a kind of steam gradient utilization systems, it is related to steam gradient utilization technical field, including bubble tank, the upper end of bubble tank is communicated with one three-way pipe, another two ports of one three-way pipe are all installed with connecting pipe, the side of bubble tank is provided with vaporizer and superheater, the side of superheater is provided with steam medium-pressure tank, one end of steam medium-pressure tank is installed with one heterotypic pipe, one end of one heterotypic pipe is installed with two three-way pipes, the side of steam medium-pressure tank is provided with dehydration tower, the side of dehydration tower is provided with rectifying tower. The utility model, by configuration gradient steam device, using medium, low steam pressure gradient uses steam, both guarantee the safety in dehydration tower, rectifying tower production process, also save steam usage, reduce production cost, improve economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of steam gradient utilization technology, and in particular to a steam gradient utilization system. Background Technology

[0002] In the methylaniline industry, the large amount of steam generated during the controlled reduction reaction is stored in a steam drum and then used by the vaporizer and superheater in the reduction system, the dehydration tower and distillation tower in the refining system, and the recovery tower in the recovery system. Because the reduction process requires the vaporizer and superheater temperatures to be controlled at ≥185℃, the steam pressure in the steam drum is set at 1.3MPa for these devices. However, in reality, controlling the temperature of the dehydration tower and distillation tower at ≤145℃ is sufficient to meet the process requirements, necessitating only a steam pressure of 0.7MPa; the recovery tower, controlled at ≤105℃, requires only 0.2MPa.

[0003] Increased steam pressure in the steam drum poses a potential overheating risk to the dehydration tower and distillation tower. Simultaneously, a large amount of steam is generated during operation, which turns into condensate in the condenser, resulting in a waste of steam heat energy and increased circulating water usage, thus increasing electricity consumption. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a steam gradient utilization system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a steam gradient utilization system, comprising a bubble tank, the upper end of which is connected to a No. 1 tee pipe, the other two ends of which are each equipped with connecting pipes; a vaporizer and a superheater are provided on one side of the bubble tank; a medium-pressure steam tank is provided on one side of the superheater; a No. 1 shaped pipe is installed at one end of the medium-pressure steam tank; a No. 2 tee pipe is installed at one end of the No. 1 shaped pipe; a dehydration tower is provided on one side of the medium-pressure steam tank; a distillation tower is provided on one side of the dehydration tower; a low-pressure steam tank is provided on one side of the distillation tower; a recovery tower is provided on one side of the low-pressure steam tank; a No. 2 shaped pipe is installed at one end of the low-pressure steam tank; and vertical pipes are installed at the other two ends of the No. 2 tee pipe.

[0006] Preferably, a No. 1 connecting pipe is installed at one end of both the vaporizer and the superheater, and a No. 2 connecting pipe is installed on the outer wall of both the dehydration tower and the distillation tower.

[0007] Preferably, the other end of each of the two sets of No. 1 connecting pipes is fixed to the other end of the steam medium-pressure tank, and the other end of each of the two sets of No. 2 connecting pipes is fixed to the other end of the steam low-pressure tank.

[0008] Preferably, the lower ends of the two sets of connecting pipes are fixed to the upper ends of the vaporizer and the superheater, respectively; the lower ends of the two sets of vertical pipes are fixed to the upper ends of the dehydration tower and the distillation tower, respectively; and the other end of the second shaped pipe is fixed to the upper end of the recovery tower.

[0009] Preferably, a support frame plate is installed on the outer wall of the dehydration tower, a stepper motor is installed at the upper end of the support frame plate, a filter screen plate is installed inside the dehydration tower, a transmission rod is rotatably installed through the outer wall of the dehydration tower, a stabilizing frame plate is installed inside the dehydration tower, a connecting rod is rotatably installed through the upper end of the stabilizing frame plate, a first bevel gear is installed on the outer wall of the connecting rod, a second bevel gear is installed on the outer wall of the transmission rod, and a scraping mechanism is provided at the upper end of the filter screen plate.

[0010] Preferably, a discharge assembly is installed through the outer wall of the dehydration tower, and one end of the transmission rod is fixed to the output end of the stepper motor.

[0011] Preferably, the first bevel gear meshes with the second bevel gear, and the lower end of the connecting rod is fixed to the upper end of the scraping mechanism.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by configuring a gradient steam device and using steam at medium and low steam pressure gradients, the safety of the dehydration tower and distillation tower production process is ensured, while also saving steam consumption, reducing production costs, and improving economic efficiency.

[0014] 2. In this utility model, the safety of system operation is improved: the setting of the medium-pressure steam tank and the low-pressure steam tank ensures that the steam pressure entering the dehydration tower, distillation tower and recovery tower matches the process requirements of each equipment, avoids the risk of equipment overheating and overpressure caused by excessive steam pressure, and ensures the safe and stable operation of the production process.

[0015] 2. In this utility model, the working efficiency of the dehydration tower is optimized: the scraping mechanism inside the dehydration tower, driven by a stepper motor, can promptly clean impurities on the filter screen through the linkage of components such as transmission rods, bevel gears, and connecting rods, preventing the filter screen from clogging, ensuring the material filtration effect and dehydration efficiency, reducing downtime caused by cleaning the filter screen, and improving production continuity. Attached Figure Description

[0016] Figure 1 This invention provides a three-dimensional structural schematic diagram of a steam gradient utilization system;

[0017] Figure 2 A partial perspective view of a steam gradient utilization system is provided for this utility model;

[0018] Figure 3 A partial top view of a steam gradient utilization system is provided for this utility model;

[0019] Figure 4 This invention provides a schematic diagram of the internal structure of the dehydration tower in a steam gradient utilization system.

[0020] Legend: 1. Bubble tank; 2. No. 1 tee pipe; 3. Connecting pipe; 4. Vaporizer; 5. Superheater; 6. Medium-pressure steam tank; 7. No. 1 connecting pipe; 8. No. 1 special-shaped pipe; 9. No. 2 tee pipe; 10. Dehydration tower; 11. Distillation tower; 12. Low-pressure steam tank; 13. Recovery tower; 14. No. 2 connecting pipe; 15. No. 2 special-shaped pipe; 16. Support frame plate; 17. Vertical pipe; 18. Stepper motor; 19. Discharge assembly; 20. Filter screen plate; 21. Transmission rod; 22. Stabilizing frame plate; 23. Connecting rod; 24. First bevel gear; 25. Second bevel gear; 26. Scraping mechanism. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a steam gradient utilization system, including a bubble tank 1. The upper end of the bubble tank 1 is connected to a No. 1 tee pipe 2. Connecting pipes 3 are installed at the other two ends of the No. 1 tee pipe 2. A vaporizer 4 and a superheater 5 are arranged on one side of the bubble tank 1. A medium-pressure steam tank 6 is arranged on one side of the superheater 5. A No. 1 shaped pipe 8 is installed at one end of the medium-pressure steam tank 6. A No. 2 tee pipe 9 is installed at one end of the No. 1 shaped pipe 8. A dehydration tower 10 is arranged on one side of the medium-pressure steam tank 6. A distillation tower 11 is arranged on one side of the dehydration tower 10. A low-pressure steam tank 12 is arranged on one side of the distillation tower 11. A recovery tower 13 is arranged on one side of the low-pressure steam tank 12. One end is equipped with a No. 2 special-shaped pipe 15, and the other two ends of the No. 2 tee pipe 9 are each equipped with a vertical pipe 17. One end of the vaporizer 4 and the superheater 5 is equipped with a No. 1 connecting pipe 7. The outer walls of the dehydration tower 10 and the distillation tower 11 are each equipped with a No. 2 connecting pipe 14. The other ends of the two sets of No. 1 connecting pipes 7 are fixed to the other end of the steam medium-pressure tank 6. The other ends of the two sets of No. 2 connecting pipes 14 are fixed to the other end of the steam low-pressure tank 12. The lower ends of the two sets of connecting pipes 3 are fixed to the upper ends of the vaporizer 4 and the superheater 5, respectively. The lower ends of the two sets of vertical pipes 17 are fixed to the upper ends of the dehydration tower 10 and the distillation tower 11, respectively. The other end of the No. 2 special-shaped pipe 15 is fixed to the upper end of the recovery tower 13.

[0024] The specific settings and functions of this embodiment will be described in detail below. The bubble tank 1 serves as a steam source device, and its upper end is connected to the No. 1 tee pipe 2, which is the starting point for steam transportation.

[0025] Vaporizer 4 and superheater 5: Located on one side of bubble tank 1, they receive steam from bubble tank 1 and are used to vaporize and superheat the steam to meet the requirements of high-temperature processes.

[0026] Medium-pressure steam tank 6: Located on one side of superheater 5, it plays the role of steam pressure regulation and transfer, and can adjust high-pressure steam to a suitable medium-pressure state;

[0027] Dehydration tower 10 and distillation tower 11: Dehydration tower 10 is located on one side of medium-pressure steam tank 6, and distillation tower 11 is located on one side of dehydration tower 10. Both are used for corresponding material separation and purification processes and require medium-pressure steam to provide energy.

[0028] Low-pressure steam tank 12: Located on one side of distillation column 11, it is used to receive the return steam from dehydration column 10 and distillation column 11 and adjust it into low-pressure steam;

[0029] Recovery tower 13: Located on one side of the low-pressure steam tank 12, it receives low-pressure steam from the low-pressure steam tank 12 and utilizes low-grade heat energy.

[0030] No. 1 three-way pipe 2: connects to the upper end of the bubble tank 1, and the other two ends are connected to pipes 3. The lower ends of the two sets of connecting pipes 3 are fixed to the upper ends of the vaporizer 4 and the superheater 5 respectively, so as to realize the steam supply from the bubble tank 1 to the vaporizer 4 and the superheater 5.

[0031] Connecting pipe 7: One pipe is installed at one end of vaporizer 4 and superheater 5, and the other end of each pipe is fixed to the other end of steam medium pressure tank 6. It is used to transport the steam from vaporizer 4 and superheater 5 back to steam medium pressure tank 6.

[0032] No. 1 special-shaped pipe 8 and No. 2 tee pipe 9: No. 1 special-shaped pipe 8 is installed at one end of steam medium-pressure tank 6, and No. 2 tee pipe 9 is installed at one end of No. 1 special-shaped pipe 8. Vertical pipes 17 are installed at the other two ends of No. 2 tee pipe 9. The lower ends of the two sets of vertical pipes 17 are fixed to the upper ends of dehydration tower 10 and distillation tower 11 respectively, so as to realize the supply of medium-pressure steam from steam medium-pressure tank 6 to dehydration tower 10 and distillation tower 11;

[0033] Second connecting pipe 14: One is installed on the outer wall of each of the dehydration tower 10 and the distillation tower 11, and the other end of each is fixed to the other end of the low-pressure steam tank 12. It is used to transport the steam back from the dehydration tower 10 and the distillation tower 11 to the low-pressure steam tank 12.

[0034] No. 2 special-shaped pipe 15: installed at one end of the low-pressure steam tank 12, and the other end is fixed to the upper end of the recovery tower 13, so as to realize the low-pressure steam tank 12 to deliver low-pressure steam to the recovery tower 13;

[0035] Achieving gradient utilization of steam and reducing energy consumption: By setting up a bubble tank 1, a medium-pressure steam tank 6, and a low-pressure steam tank 12, steam is distributed to equipment such as vaporizer 4, superheater 5, dehydration tower 10, distillation tower 11, and recovery tower 13 according to different pressure requirements. This avoids the energy waste caused by steam pressure mismatch in traditional processes. High-pressure steam first meets the needs of high-temperature equipment such as vaporizer 4 and superheater 5. Its return steam is regulated by the medium-pressure tank and then used by dehydration tower 10 and distillation tower 11. Then, the return steam is regulated by the low-pressure tank and then used by recovery tower 13. This significantly improves the utilization rate of steam energy, reduces steam consumption, and lowers production costs.

[0036] Example 2: Figure 1 , Figure 3 and Figure 4As shown, a support frame plate 16 is installed on the outer wall of the dehydration tower 10, and a stepper motor 18 is installed on the upper end of the support frame plate 16. A filter screen plate 20 is installed inside the dehydration tower 10. A transmission rod 21 is rotatably installed through the outer wall of the dehydration tower 10. A stabilizing frame plate 22 is installed inside the dehydration tower 10. A connecting rod 23 is rotatably installed through the upper end of the stabilizing frame plate 22. A first bevel gear 24 is installed on the outer wall of the connecting rod 23. A second bevel gear 25 is installed on the outer wall of the transmission rod 21. A scraping mechanism 26 is provided at the upper end of the filter screen plate 20. A discharge assembly 19 is installed through the outer wall of the dehydration tower 10. One end of the transmission rod 21 is fixed to the output end of the stepper motor 18. The first bevel gear 24 and the second bevel gear 25 mesh. The lower end of the connecting rod 23 is fixed to the upper end of the scraping mechanism 26.

[0037] The overall effect of this embodiment is as follows: the support frame 16 is installed on the outer wall of the dehydration tower 10 to support the stepper motor 18. The stepper motor 18 is installed on the upper end of the support frame 16 to provide power for transmission. The filter screen 20 is located inside the dehydration tower 10 to filter impurities in the material. The transmission rod 21 is rotatably installed through the outer wall of the dehydration tower 10, with one end fixed to the output end of the stepper motor 18 to transmit power. The stabilizing frame 22 is installed inside the dehydration tower 10 to support the connecting rod 23. The connecting rod 23 is rotatably installed through the upper end of the stabilizing frame 22, with its lower end fixed to the upper end of the scraping mechanism 26 to drive the scraping mechanism 26 to operate. The first bevel gear 24 is installed on the outer wall of the connecting rod 23, and the second bevel gear 25 is installed on the outer wall of the transmission rod 21. The two mesh to realize the conversion of power direction. The scraping mechanism 26 is set on the upper end of the filter screen 20 and is driven by the connecting rod 23 to clean impurities on the filter screen 20. The discharge assembly 19 is installed through the outer wall of the dehydration tower 10 to discharge the cleaned impurities.

[0038] How to use and how to work this device:

[0039] Initial steam output:

[0040] The bubble tank 1 serves as the steam source, and the high-pressure steam generated (such as the 1.3MPa mentioned in the background of the document) is split through the No. 1 tee pipe 2 at the top and delivered to the vaporizer 4 and the superheater 5 respectively through two sets of connecting pipes 3, so as to meet the high temperature (≥185℃) process requirements of both.

[0041] Medium-pressure steam conversion and supply:

[0042] The medium-pressure return steam generated after the vaporizer 4 and superheater 5 are working (the pressure is higher than that required by the dehydration tower 10 and the distillation tower 11) is fed into the medium-pressure steam tank 6 through two sets of No. 1 connecting pipes 7. After the pressure inside the tank is regulated, it is stabilized at the appropriate pressure (such as 0.7-0.8MPa).

[0043] The medium-pressure steam is then transported to the dehydration tower 10 and the distillation tower 11 via the No. 1 special-shaped pipe 8, the No. 2 three-way pipe 9 and the two sets of vertical pipes 17, respectively, to meet the temperature requirements of ≤145℃ for both.

[0044] Low-pressure steam conversion and supply:

[0045] The low-pressure return steam from the dehydration tower 10 and the distillation tower 11 (the pressure can still meet the lower requirements) enters the low-pressure steam tank 12 through two sets of No. 2 connecting pipes 14. After being adjusted to about 0.2MPa, it is transported to the recovery tower 13 through the No. 2 special-shaped pipe 15 to match its process conditions of ≤105℃.

[0046] Final steam recovery:

[0047] The low-pressure return steam from recovery tower 13 (which has already completed energy utilization) eventually enters the soft water recovery tank (refer to the process route in the document) to realize the recovery and reuse of condensate and avoid the waste of heat energy caused by direct discharge;

[0048] The dehydration tower 10 ensures filtration efficiency through its built-in mechanism during material processing;

[0049] After the stepper motor 18 is started, the power is transmitted to the second bevel gear 25 through the transmission rod 21. Through the meshing action with the first bevel gear 24, the horizontal rotational motion is converted into the vertical rotational motion of the connecting rod 23.

[0050] The connecting rod 23 drives the scraping mechanism 26 at the lower end to rotate on the upper end of the filter screen 20, so as to scrape off the impurities attached to the screen during the filtration process in time and prevent clogging.

[0051] The scraped-off impurities are discharged out of the tower through the discharge component 19, ensuring that the material remains smoothly filtered during the dewatering process and maintaining stable dewatering efficiency.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A steam gradient utilization system, comprising a bubble tank (1), characterized in that: The upper end of the bubble tank (1) is connected to a No. 1 tee pipe (2). The other two ends of the No. 1 tee pipe (2) are equipped with connecting pipes (3). A vaporizer (4) and a superheater (5) are provided on one side of the bubble tank (1). A medium-pressure steam tank (6) is provided on one side of the superheater (5). A No. 1 special-shaped pipe (8) is installed at one end of the medium-pressure steam tank (6). A No. 2 tee pipe (9) is installed at one end of the No. 1 special-shaped pipe (8). A dehydration tower (10) is provided on one side of the medium-pressure steam tank (6). A distillation tower (11) is provided on one side of the dehydration tower (10). A low-pressure steam tank (12) is provided on one side of the distillation tower (11). A recovery tower (13) is provided on one side of the low-pressure steam tank (12). A No. 2 special-shaped pipe (15) is installed at one end of the low-pressure steam tank (12). A vertical pipe (17) is installed at the other two ends of the No. 2 tee pipe (9).

2. The steam gradient utilization system according to claim 1, characterized in that: One end of the vaporizer (4) and the superheater (5) is equipped with a No. 1 connecting pipe (7), and the outer walls of the dehydration tower (10) and the distillation tower (11) are equipped with a No. 2 connecting pipe (14).

3. The steam gradient utilization system according to claim 2, characterized in that: The other end of each of the two sets of No. 1 connecting pipes (7) is fixed to the other end of the steam medium pressure tank (6), and the other end of each of the two sets of No. 2 connecting pipes (14) is fixed to the other end of the steam low pressure tank (12).

4. A steam gradient utilization system according to claim 3, characterized in that: The lower ends of the two sets of connecting pipes (3) are fixed to the upper ends of the vaporizer (4) and the superheater (5), respectively. The lower ends of the two sets of vertical pipes (17) are fixed to the upper ends of the dehydration tower (10) and the distillation tower (11), respectively. The other end of the second special-shaped pipe (15) is fixed to the upper end of the recovery tower (13).

5. A steam gradient utilization system according to claim 1, characterized in that: The outer wall of the dehydration tower (10) is equipped with a support frame plate (16), and a stepper motor (18) is installed at the upper end of the support frame plate (16). The interior of the dehydration tower (10) is equipped with a filter screen plate (20). A transmission rod (21) is rotatably installed through the outer wall of the dehydration tower (10). A stabilizing frame plate (22) is installed inside the dehydration tower (10). A connecting rod (23) is rotatably installed through the upper end of the stabilizing frame plate (22). A first bevel gear (24) is installed on the outer wall of the connecting rod (23). A second bevel gear (25) is installed on the outer wall of the transmission rod (21). A scraping mechanism (26) is provided at the upper end of the filter screen plate (20).

6. A steam gradient utilization system according to claim 5, characterized in that: The outer wall of the dehydration tower (10) is fitted with a discharge assembly (19), and one end of the transmission rod (21) is fixed to the output end of the stepper motor (18).

7. A steam gradient utilization system according to claim 6, characterized in that: The first bevel gear (24) meshes with the second bevel gear (25), and the lower end of the connecting rod (23) is fixed to the upper end of the scraping mechanism (26).

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