A vertical boiler deaeration system
By designing a vertical boiler deaeration system, a combination of jet injectors and hot gas mesh packing was used to achieve mixed heating of condensate and high-temperature steam, solving the problem of unrecoverable condensate and exhaust steam, and improving energy utilization and deaeration efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGYUN HONGHE TOBACCO (GRP) CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-09
AI Technical Summary
The condensate steam generated during the operation of vertical gas-fired boilers cannot be effectively recovered, resulting in energy waste.
A vertical boiler deaeration system was designed, including a deaerator, a heat exchanger, and a water storage tank. By combining the use of a jet nozzle and hot air mesh packing, the system achieves mixed heating of condensate and high-temperature steam, dissolves oxygen, and recovers and utilizes the heat from the exhaust steam, thereby improving deaeration efficiency.
This achieves full recovery of waste steam heat, improves energy utilization, reduces energy loss, and enhances deoxygenation efficiency.
Smart Images
Figure CN224340106U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tobacco processing equipment technology, and specifically to a vertical boiler deoxygenation system. Background Technology
[0002] Vertical gas-fired boilers are once-through boilers used to provide heat for tobacco processing equipment. During operation, these boilers generate a large amount of condensate. Boiler condensate refers to the water that condenses when steam comes into contact with low-temperature pipe walls or equipment during transport or use. This water is considered qualified boiler water, with relatively high temperature and pressure. To prevent energy waste, this condensate is introduced into a deaerator for deoxygenation before being used by the boiler. However, a large amount of flash steam (exhaust steam) is generated after the condensate enters the deaerator. The deaerator cannot completely mix the steam and water for proper "digestion," and most of the flash steam is discharged through the exhaust port without energy recovery, resulting in energy waste. Utility Model Content
[0003] This application provides a vertical boiler deaeration system designed to fully recover the energy from the exhaust steam of the deaerator and improve energy utilization.
[0004] In one embodiment, a vertical boiler deaeration system is provided, comprising:
[0005] A deaerator, comprising a condensate inlet, a condensate outlet, and a deaerator head; the deaerator head having a soft water inlet and an exhaust outlet; both the condensate inlet and the condensate outlet being connected to the boiler's condensate drain pipe to form a condensate deaerator circuit; the soft water inlet being connected to a soft water pipe; the soft water pipe being connected to an external soft water source.
[0006] A heat exchanger having an air inlet, an air outlet, a water inlet, and a water outlet; the air inlet is connected to the air outlet via an exhaust pipe;
[0007] A water storage tank is provided, which is connected to an inlet pipe, an outlet pipe, and a first connecting pipe; the inlet pipe is connected to the upstream of the soft water pipe; the outlet pipe is connected to the downstream of the soft water pipe; the first connecting pipe is connected to the outlet; and the soft water pipe is connected to the inlet via a second connecting pipe.
[0008] The soft water in the soft water pipe has a significantly reduced concentration of calcium and magnesium ions, and its hardness is ≤0.03mmol / L. The soft water pipe is connected to an air conditioning water pipe that supplies water to the air-conditioned room; the air conditioning water pipe is connected downstream of the connection between the water tank outlet pipe and the soft water pipe.
[0009] Both the soft water pipe and the outlet pipe are equipped with pumps to power the flow of soft water.
[0010] In one embodiment, the deaerator is equipped with an ejector and a hot air mesh packing; the ejector is connected to the soft water pipe; and the ejector is located directly above the hot air mesh packing.
[0011] Specifically, the jet ejector has a swirling film tube with oblique holes to eject a high-speed rotating jet, giving the water flow tangential velocity and enhancing centrifugal force to form a "water film skirt". The formed "water film skirt" initially separates 90-95% of dissolved oxygen under turbulent conditions, and the oxygen is discharged from the exhaust port.
[0012] The hot gas mesh packing uses stainless steel wire mesh, which can form a micron-level liquid film, extending the gas-liquid contact time / path and completely removing residual oxygen.
[0013] In one embodiment, the deaerator is further provided with a dosing mechanism; the dosing mechanism is connected to the deaerator.
[0014] In one embodiment, the dosing mechanism includes an outer shell, a dosing tank, and a conveyor; the outer shell is sealed and fixedly connected to the deaerator; the dosing tank is fixedly disposed within the outer shell, and a dosing outlet is provided at the lower part of the dosing tank, with the conveyor communicating with the dosing outlet; a dosing port is provided on the deaerator, with the conveyor communicating with the dosing port.
[0015] In one embodiment, the upper part of the outer casing has a first opening, and a first cover is provided and sealed over the first opening.
[0016] Specifically, the first opening and the first cover are sealed by screwing them together with threads.
[0017] In one embodiment, the dosing tank has a second opening, and a second cover is provided and sealed over the second opening.
[0018] Specifically, the second opening and the second cover are sealed by screwing them together with threads.
[0019] In one embodiment, the conveyor includes a drive motor, a screw, and a conveying cylinder; the conveying cylinder is connected to the drug outlet; the drive motor is located at one end of the conveying cylinder, and the other end of the conveying cylinder is connected to the drug dosing port; the screw is located inside the conveying cylinder and is drivenly connected to the output end of the drive motor; the drive motor is fixedly connected to the drug dosing tank.
[0020] In one embodiment, the dosing tank is fixedly connected to the deaerator via a support column.
[0021] In one embodiment, the dosing mechanism further includes a processor and a pressure sensor; the support column is fixedly connected to the dosing tank via the pressure sensor; both the drive motor and the pressure sensor are electrically connected to the processor.
[0022] In one embodiment, an air pump is installed on the exhaust port; the air pump is connected to the exhaust pipe.
[0023] The beneficial effects of this application are:
[0024] After the condensate enters the deaerator through the condensate drain pipe, the high-temperature steam in the drain pipe mixes with the soft water jet from the deaerator head. After mixing, the water temperature rises to near the saturation temperature at the operating pressure. Since gas solubility is proportional to its partial pressure, when heated to the saturation temperature, the partial pressure of water vapor approaches the total pressure, and the partial pressure of oxygen approaches zero. Dissolved oxygen is forced to escape and is discharged from the exhaust port, thus achieving the deaeration function. The gas discharged from the deaerator (exhaust steam) enters the heat exchanger through the exhaust pipe. The first and second connecting pipes of the heat exchanger are connected to the water storage tank. The water storage tank exchanges heat with the exhaust steam, transferring the heat from the exhaust steam to the water storage tank to increase the temperature of the soft water supplied to the deaerator head. This allows the soft water to reach the saturation temperature more quickly after mixing with the high-temperature steam, improving deaeration efficiency, fully utilizing the thermal energy of the exhaust steam, and reducing energy loss. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the deoxygenation system structure according to an embodiment of this application;
[0027] Figure 2 yes Figure 1 Enlarged diagram of point A in the diagram;
[0028] Figure 3 This is a schematic diagram of the control flow according to an embodiment of this application;
[0029] Labels for each item in the figure:
[0030] 1. Deaerator; 11. Drain inlet; 12. Drain outlet; 13. Deaerator head; 131. Soft water inlet; 132. Exhaust port; 133. Ejector; 134. Hot air mesh packing; 14. Drain pipe; 15. Soft water pipe; 16. Exhaust pipe; 17. Air pump; 2. Heat exchanger; 21. Air inlet; 22. Air outlet; 23. Water inlet; 24. Water outlet; 3. Water tank; 31. Water inlet pipe; 32. Water outlet pipe ; 33. First connecting pipe; 34. Second connecting pipe; 4. Air conditioning water pipe; 5. Pump body; 6. Dosing mechanism; 61. Outer shell; 62. Dosing tank; 63. Conveyor; 631. Drive motor; 632. Screw; 633. Conveying cylinder; 64. Dosing outlet; 65. Dosing port; 66. First cover; 67. Second cover; 68. Support column; 7. Processor; 71. Pressure sensor; 72. Oxygen concentration sensor. Detailed Implementation
[0031] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0036] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0037] This application proposes improvements and innovations, and presents the following embodiments.
[0038] In some implementations, please refer to Figures 1 to 3 A vertical boiler deaeration system is provided, comprising:
[0039] Deaerator 1 has a condensate inlet 11, a condensate outlet 12, and a deaerator head 13; the deaerator head 13 has a soft water inlet 131 and an exhaust port 132; the condensate inlet 11 and the condensate outlet 12 are both used to connect with the boiler's condensate drain pipe 14 to form a condensate deaerator circuit; the soft water inlet 131 is connected to a soft water pipe 15; the soft water pipe 15 is used to connect with an external soft water source;
[0040] Heat exchanger 2 has an air inlet 21, an air outlet 22, a water inlet 23 and a water outlet 24; the air inlet 21 is connected to the exhaust outlet 132 through an exhaust pipe 16.
[0041] Water storage tank 3 is connected to inlet pipe 31, outlet pipe 32 and first connecting pipe 33; inlet pipe 31 is connected to the upstream of soft water pipe 15; outlet pipe 32 is connected to the downstream of soft water pipe 15; first connecting pipe 33 is connected to outlet 24; soft water pipe 15 is connected to inlet 23 through second connecting pipe 34.
[0042] The soft water in the soft water pipe 15 is water with significantly reduced calcium and magnesium ion concentrations, and the water hardness is ≤0.03mmol / L. The soft water pipe 15 is connected to an air conditioning water pipe 4 that supplies water to the air-conditioned room; the air conditioning water pipe 4 is connected downstream of the water outlet pipe 32 of the water storage tank 3 and the soft water pipe 15.
[0043] Pump bodies 5 are installed on both the soft water pipe 15 and the outlet pipe 32 to provide power for the flow of soft water.
[0044] After the condensate enters the deaerator 1 through the condensate pipe 14, the high-temperature steam in the condensate pipe 14 mixes with the soft water jet from the deaerator head 13. After the soft water and high-temperature steam mix, the water temperature rises to near the saturation temperature under the working pressure. Since the gas solubility is proportional to its partial pressure, when heated to the saturation temperature, the water vapor partial pressure approaches the total pressure, the oxygen partial pressure approaches zero, and the dissolved oxygen is forced to escape. The oxygen is discharged from the exhaust port 132, thus achieving the deaeration function. The gas discharged from the deaerator 1 (exhaust steam) enters the heat exchanger through the exhaust pipe 16. The first connecting pipe 33 and the second connecting pipe 34 of the heat exchanger 2 are connected to the water storage tank 3. After the water and exhaust steam exchange heat, the heat of the exhaust steam is transferred to the water storage tank 3 to increase the temperature of the soft water supplied to the deaerator head 13 by the water storage tank 3. This allows the soft water and high-temperature steam to reach the saturation temperature more quickly after mixing, improving the deaeration efficiency, making full use of the heat energy of the exhaust steam, and reducing energy consumption.
[0045] In some embodiments, the deaerator 13 is provided with an ejector 133 and a hot air mesh packing 134; the ejector 133 is connected to the soft water pipe 15; the ejector 133 is located directly above the hot air mesh packing 134. Soft water passes sequentially through the ejector 133 and the hot air mesh packing 134, which improves the mixing of high-temperature steam and soft water and enhances the deaeration effect.
[0046] Specifically, the jet ejector 133 has a swirling film tube with oblique holes for ejecting a high-speed rotating jet, giving the water flow tangential velocity, enhancing centrifugal force to form a "water film skirt". The formed "water film skirt" initially separates 90-95% of dissolved oxygen under turbulent conditions, and the oxygen is discharged from the exhaust port 132.
[0047] The hot gas mesh packing 134 is made of stainless steel wire mesh, which can form a micron-level liquid film, extending the gas-liquid contact time / path and completely removing residual oxygen.
[0048] In some embodiments, the deaerator 1 is further provided with a dosing mechanism 6; the dosing mechanism 6 is connected to the deaerator 1. Providing the dosing mechanism 6 can increase the oxygen release from the water in the deaerator 1, thereby improving the deoxygenation effect.
[0049] In some embodiments, the dosing mechanism 6 includes a housing 61, a dosing tank 62, and a conveyor 63; the housing 61 is sealed and fixedly connected to the deaerator 1; the dosing tank 62 is fixedly disposed inside the housing 61, and a dosing outlet 64 is provided at the lower part of the dosing tank 62, with the conveyor 63 communicating with the dosing outlet 64; a dosing port 65 is provided on the deaerator 1, with the conveyor 63 communicating with the dosing port 65. The dosing mechanism 6 has a simple structure and a reasonable design, facilitating dosing.
[0050] In some embodiments, the upper part of the outer casing 61 has a first opening, and a first cover 66 is provided and sealed over the first opening. The first opening facilitates the replacement and maintenance of the dosing tank 62.
[0051] Specifically, the first opening and the first cover 66 are sealed by screwing them together with threads. This design is reasonable and the structure is simple.
[0052] In some embodiments, the dosing tank 62 has a second opening, and a second cover 67 is provided on the second opening for sealing connection. The second opening facilitates the dosing of medicine.
[0053] Specifically, the second opening and the second cover 67 are sealed by screwing them together with threads. This design is reasonable and the structure is simple.
[0054] In some embodiments, the conveyor 63 includes a drive motor 631, a screw 632, and a conveying cylinder 633; the conveying cylinder 633 is connected to the drug outlet 64; the drive motor 631 is located at one end of the conveying cylinder 633, and the other end of the conveying cylinder 633 is connected to the drug dosing port 65; the screw 632 is located inside the conveying cylinder 633, and the screw 632 is drivenly connected to the output end of the drive motor 631; the drive motor 631 is fixedly connected to the drug dosing tank 62. The conveyor 63 has a simple structure, and the rotation of the screw 632 is used to push the medicine into the deaerator 1 to ensure the drug dispensing effect.
[0055] In some embodiments, the dosing tank 62 is fixedly connected to the deaerator 1 via a support column 68. The support column 68, positioned at the bottom of the dosing tank 62, ensures the secure connection of the dosing tank 62.
[0056] In some embodiments, the dosing mechanism 6 further includes a processor 7 and a pressure sensor 71; the support column 68 is fixedly connected to the dosing tank 62 via the pressure sensor 71; the drive motor 631 and the pressure sensor 71 are both electrically connected to the processor 7. With the pressure sensor 71 installed, the amount of dosing can be determined by the pressure difference after dosing. Therefore, it is convenient to obtain the amount of dosing.
[0057] An oxygen concentration sensor 72 is installed in the deaerator 1. The oxygen concentration sensor 72 is electrically connected to the processor 7. The processor 7 calculates the dosage based on the oxygen concentration sensor 72, and then controls the rotation of the drive motor 631 to drive the screw 632 to rotate for dosing.
[0058] In some embodiments, an air pump 17 is installed on the exhaust port 132; the air pump 17 is connected to the exhaust pipe 16. The air pump 17 can cause the soft water in the deaerator 1 to boil, releasing more oxygen and reducing the oxygen concentration in the soft water.
[0059] The air pump 17 and the pump body 5 are also electrically connected to the processor 7.
[0060] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this utility model.
Claims
1. A vertical boiler deaeration system, characterized in that, include: A deaerator, comprising a condensate inlet, a condensate outlet, and a deaerator head; the deaerator head having a soft water inlet and an exhaust outlet; both the condensate inlet and the condensate outlet being connected to the boiler's condensate drain pipe to form a condensate deaerator circuit; the soft water inlet being connected to a soft water pipe; the soft water pipe being connected to an external soft water source. A heat exchanger having an air inlet, an air outlet, a water inlet, and a water outlet; the air inlet is connected to the air outlet via an exhaust pipe; A water storage tank is provided, which is connected to an inlet pipe, an outlet pipe, and a first connecting pipe; the inlet pipe is connected to the upstream of the soft water pipe; the outlet pipe is connected to the downstream of the soft water pipe; the first connecting pipe is connected to the outlet; and the soft water pipe is connected to the inlet via a second connecting pipe.
2. The vertical boiler deaeration system according to claim 1, characterized in that, The deaerator head is equipped with an ejector and a hot air mesh packing; the ejector is connected to the soft water pipe; the ejector is located directly above the hot air mesh packing.
3. The vertical boiler deaeration system according to claim 1, characterized in that, The deaerator is also equipped with a dosing mechanism; the dosing mechanism is connected to the deaerator.
4. The vertical boiler deaeration system according to claim 3, characterized in that, The dosing mechanism includes an outer shell, a dosing tank, and a conveyor; the outer shell is sealed and fixedly connected to the deaerator; the dosing tank is fixedly disposed inside the outer shell, and a dosing outlet is provided at the lower part of the dosing tank, with the conveyor communicating with the dosing outlet; a dosing port is provided on the deaerator, with the conveyor communicating with the dosing port.
5. The vertical boiler deaeration system according to claim 4, characterized in that, The upper part of the outer shell has a first opening, and a first cover is provided and sealed to the first opening.
6. The vertical boiler deaeration system according to claim 5, characterized in that, The dosing tank has a second opening, and a second cover is provided to seal the second opening.
7. The vertical boiler deaeration system according to claim 4, characterized in that, The conveyor includes a drive motor, a screw, and a conveying cylinder; the conveying cylinder is connected to the drug outlet; the drive motor is located at one end of the conveying cylinder, and the other end of the conveying cylinder is connected to the drug dosing port; the screw is located inside the conveying cylinder and is drivenly connected to the output end of the drive motor; the drive motor is fixedly connected to the drug dosing tank.
8. The vertical boiler deaeration system according to claim 7, characterized in that, The dosing tank is fixedly connected to the deaerator via a support column.
9. The vertical boiler deaeration system according to claim 8, characterized in that, The dosing mechanism also includes a processor and a pressure sensor; the support column is fixedly connected to the dosing tank via the pressure sensor; the drive motor and the pressure sensor are both electrically connected to the processor.
10. The vertical boiler deaeration system according to any one of claims 1-9, characterized in that, An air pump is installed on the exhaust port; the air pump is connected to the exhaust pipe.