Efficient deoxidizing tank
By using horizontal arrangement of steam distributors and dosing distributors in the deoxygenation tank, the problems of uneven steam distribution and short contact time are solved, uniform contact between steam and water is achieved, deoxygenation efficiency and energy utilization are improved, and operating costs are reduced.
Patent Information
- Application Number
- CN202421821683.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the deoxidation process, the existing deoxidation tank has problems such as large steam venting, uneven distribution of heating steam, small contact area between steam and water, and short contact time, resulting in low deoxidation efficiency, waste of energy and high operating costs.
A high-efficiency deoxygenation tank is designed, and a horizontal arrangement is adopted for steam distributors and dosing distributors, so that the heating steam is uniformly distributed, extending the contact time between steam and water, and expanding the contact area between steam and water by increasing the steam inlet pipe and spray holes on the distributor.
By evenly distributing steam and extending contact time, the contact area between steam and water is significantly improved, thereby improving the deoxygenation effect, reducing steam venting, improving energy utilization, and reducing operating costs.
Smart Images
Figure CN222864916U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of deoxidation devices, in particular to a high-efficiency deoxidation tank. Background Art
[0002] At present, when the synthetic ammonia unit is running at full load, there are some problems in the deoxygenation process of the deoxygenation tank. Specifically, the temperature of the desalted water at the inlet of the deoxygenation tank reaches 118°C. By introducing 0.5MPa steam into the deoxygenation tank and the water tank respectively, the total steam flow rate is about 1.3-1.5t / h. Finally, the pressure in the deoxygenation tank reaches 0.07MPa, and the outlet boiler feed water temperature is maintained at 116°C. Although such a design can meet the requirements of the national standard GB / T1576-2018 "Industrial Boiler Water Quality", it still faces the following challenges in actual operation:
[0003] (1) Large amount of steam venting: Due to uneven steam distribution, part of the steam is not effectively utilized and is vented, resulting in energy waste.
[0004] (2) Uneven distribution of heating steam: The steam is unevenly distributed in the deaeration tank and water tank, resulting in unsatisfactory deaeration effect in some areas.
[0005] (3) The contact area between steam and water is small: Due to the limited contact area between steam and water, the deoxidation efficiency is low.
[0006] (4) The contact time between steam and water is short: Due to the fast steam flow rate or uneven distribution, the contact time between steam and water is insufficient, which further affects the deoxidation effect.
[0007] These problems not only affect the deoxidation efficiency of the deoxidation tank, but also increase energy consumption and operating costs. Utility Model Content
[0008] The utility model provides a high-efficiency deoxidation tank to solve the technical problems of large steam discharge volume, uneven distribution of heating steam and small contact area between steam and water in the existing deoxidation tank.
[0009] To achieve the above object, the present invention provides the following technical solutions:
[0010] The present application provides a high-efficiency deoxygenation tank, comprising a water tank and a deoxygenation head, wherein the water tank is welded above the deoxygenation head, and is characterized in that a desalted water inlet is provided on the upper side of the deoxygenation head, a first air inlet and a second air inlet are sequentially provided below the desalted water inlet to preliminarily deoxygenate the desalted water, and an exhaust port is provided on the top of the deoxygenation head; a steam distributor is provided at the bottom of the water tank, a dosing distributor is provided above the steam distributor, an auxiliary heating steam inlet is provided above the water tank, the auxiliary heating steam inlet is communicated with the steam distributor, a dosing port is provided at the bottom of the water tank, the dosing port is communicated with the dosing distributor, and a deoxygenated water outlet is provided at the center of the bottom of the water tank.
[0011] Furthermore, the steam distributor is arranged in parallel in the water tank, so that the heating steam is evenly distributed, which prolongs the contact time between steam and water. A steam port is opened obliquely above the steam distributor to facilitate the injection of steam obliquely upward.
[0012] Furthermore, the steam distributor and the dosing distributor are arranged in the water tank and are fixed by welding using a support frame.
[0013] Furthermore, a pressure gauge is provided on one side of the exhaust port, and the pressure in the deaerator head is detected by the pressure gauge. When the pressure reaches a set value, the exhaust port is opened to exhaust.
[0014] Furthermore, an inspection port and a loading and unloading filling hole are also provided on one side of the deaerator head. The inspection port is used for workers to enter the deaerator head to explore and inspect the internal conditions of the deaerator head, and the loading and unloading filling hole is used to fill the filler in the deaerator head.
[0015] Furthermore, a medium-pressure boiler feed water pump return port and a low-pressure boiler feed water pump return port are also provided above the water tank.
[0016] Furthermore, a liquid level meter interface, a liquid level transmitter interface and a liquid level switch are provided on the side of the water tank to facilitate monitoring of the position or height of the liquid.
[0017] Beneficial effects achieved by the utility model:
[0018] The high-efficiency deoxidation tank provided by the utility model adopts a horizontally arranged distributor to make the heated steam present a uniform distribution state, prolong the contact time between steam and water, increase the steam inlet pipeline, expand the layout range of the distributor, and increase the injection holes on the distributor, thereby greatly increasing the contact area between steam and water and further improving the deoxidation effect. Due to the uniform steam distribution and the extension of the contact time, the steam venting volume is greatly reduced, and the energy utilization rate is significantly improved. By improving the deoxidation efficiency and reducing the energy consumption, the utility model helps to reduce the operating cost of the deoxidation tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the steam distributor of the utility model;
[0021] Figure 3 It is a cross-sectional view of the steam distributor of the utility model;
[0022] Figure 4 It is a structural schematic diagram of the dosing distributor of the utility model.
[0023] Reference numerals:
[0024] 1. Water tank; 2. Deaerator head; 3. Desalted water inlet; 4. First air inlet; 5. Second air inlet; 6. Exhaust port; 7. Steam distributor; 8. Dosing distributor; 9. Auxiliary heating steam inlet; 10. Dosing port; 11. Pressure gauge; 12. Inspection port; 13. Loading and unloading hole for filling; 14. Return port for medium-pressure boiler feed pump; 15. Return port for low-pressure boiler feed pump; 16. Liquid level gauge interface; 17. Liquid level transmitter interface; 18. Liquid level switch; 19. Deaerated water outlet; 20. Steam port.
[0025] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0027] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.
[0028] like Figure 1-Figure 4As shown, a high-efficiency deoxygenation tank comprises a water tank 1 and a deoxygenation head 2, wherein the water tank 1 is welded above the deoxygenation head 2, a desalted water inlet 3 is arranged on the upper side of the deoxygenation head 2, a first air inlet 4 and a second air inlet 5 are arranged in sequence below the desalted water inlet 3, for preliminary deoxygenation of the desalted water, and an exhaust port 6 is arranged on the top of the deoxygenation head 2; a steam distributor 7 is arranged at the bottom of the water tank 1, a dosing distributor 8 is arranged above the steam distributor 7, an auxiliary heating steam inlet 9 is arranged above the water tank 1, the auxiliary heating steam inlet 9 is communicated with the steam distributor 7, a dosing port 10 is arranged at the bottom of the water tank 1, the dosing port 10 is communicated with the dosing distributor 8, and a deoxygenated water outlet 19 is arranged at the center of the bottom of the water tank 1.
[0029] In a specific embodiment, the steam distributor 7 is arranged in parallel in the water tank 1, so that the heating steam is evenly distributed, which prolongs the contact time between steam and water. A steam port 20 is opened obliquely above the steam distributor 7 to facilitate the injection of steam obliquely upward.
[0030] In a specific embodiment, the distributor is fixed in the water tank 1 by supporting welding, so that the heated steam is evenly distributed, which greatly increases the contact area between steam and water, allows sufficient countercurrent contact between steam and desalted water in the deoxygenation tank, and prolongs the contact time between steam and water, thereby achieving the purpose of improving the deoxygenation efficiency.
[0031] In a specific embodiment, a pressure gauge 11 is provided on one side of the exhaust port 6, and the pressure in the deoxidation head 2 is detected by the pressure gauge 11. When the pressure reaches a set value, the exhaust port 6 is opened to exhaust.
[0032] In a specific embodiment, an inspection port 12 and a loading and unloading filling hole 13 are also provided on one side of the deaerator head 2. The inspection port 12 is used for workers to enter the deaerator head 2 to explore and inspect the internal conditions of the deaerator head 2. The loading and unloading filling hole 13 is used to fill fillers in the deaerator head 2. The fillers increase the contact area between the desalted water and the steam. By increasing the contact area, it helps to achieve a more uniform mixing of the desalted water and the steam in the deaerator head, effectively promoting the mass transfer rate between the desalted water and the steam, thereby accelerating the deoxygenation process.
[0033] In a specific embodiment, a medium-pressure boiler feed water pump return port 14 and a low-pressure boiler feed water pump return port 15 are further provided above the water tank 1 .
[0034] In a specific embodiment, a liquid level meter interface 16, a liquid level transmitter interface 17 and a liquid level switch 18 are provided on the side of the water tank 1 to facilitate monitoring the position or height of the liquid.
[0035] In a specific embodiment, the deoxygenated liquid is discharged from the deoxygenated water outlet 19 and enters the waste heat boiler. It has been verified that the dissolved oxygen in the desalted water discharged from the deoxygenated water outlet 19 is reduced from 80 to 100 ug / l to 30 to 35 ug / l, which is beneficial to extend the service life of the waste heat boiler.
[0036] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A high-efficiency deoxidation tank, comprising a water tank (1) and a deoxidation head (2), wherein the water tank (1) is welded above the deoxidation head (2), characterized in that: A desalted water inlet (3) is provided on the upper side of the deaerator head (2), and a first air inlet (4) and a second air inlet (5) are provided in sequence below the desalted water inlet (3) to perform preliminary deoxygenation on the desalted water. An exhaust port (6) is provided on the top of the deaerator head (2); a steam distributor (7) is provided at the bottom of the water tank (1), and a dosing distributor (8) is provided above the steam distributor (7); an auxiliary heating steam inlet (9) is provided above the water tank (1), and the auxiliary heating steam inlet (9) is connected to the steam distributor (7); a dosing port (10) is provided at the bottom of the water tank (1), and the dosing port (10) is connected to the dosing distributor (8); a deoxygenated water outlet (19) is provided at the center of the bottom of the water tank (1).
2. A high-efficiency deoxidation tank according to claim 1, characterized in that: The steam distributor (7) is arranged in parallel in the water tank (1) so that the heating steam is evenly distributed, thereby prolonging the contact time between the steam and the water. A steam port (20) is provided obliquely above the steam distributor (7) to facilitate the injection of steam obliquely upward.
3. A high-efficiency deoxidation tank according to claim 1, characterized in that: The steam distributor (7) and the dosing distributor (8) are arranged in the water tank (1) and are fixed by welding using a support frame.
4. A high-efficiency deoxidation tank according to claim 1, characterized in that: A pressure gauge (11) is provided on one side of the exhaust port (6), and the pressure in the deoxidizing head (2) is detected by the pressure gauge (11). When the pressure reaches a set value, the exhaust port (6) is opened to exhaust.
5. A high-efficiency deoxidation tank according to claim 1, characterized in that: The deaerator head (2) is also provided with an inspection port (12) and a loading and unloading filling hole (13) on one side. The inspection port (12) is used for workers to enter the deaerator head (2) to inspect and inspect the internal conditions of the deaerator head (2), and the loading and unloading filling hole (13) is used to fill the deaerator head (2) with filling materials.
6. A high-efficiency deoxidation tank according to claim 1, characterized in that: A medium-pressure boiler feed water pump return port (14) and a low-pressure boiler feed water pump return port (15) are also provided above the water tank (1).
7. A high-efficiency deoxidation tank according to claim 1, characterized in that: A liquid level meter interface (16), a liquid level transmitter interface (17) and a liquid level switch (18) are arranged on the side of the water tank (1) to facilitate monitoring of the position or height of the liquid.