Mixed deoxidizing tank

Abstract

The utility model provides a mixing type deoxidizing tank which comprises a tank body and a partition plate which divides the tank body into a first deoxidizing area and a second deoxidizing area and is provided with a liquid passing channel. Through holes are distributed in the upper supporting plate and the lower supporting plate, the flow mixing assembly is arranged between the upper supporting plate and the lower supporting plate, the liquid uniform distribution assembly is suspended at the upper end of the flow mixing assembly, and the steam uniform distribution assembly is suspended at the lower end of the flow mixing assembly. A liquid inlet connected with the liquid uniform distribution assembly and a steam inlet connected with the steam uniform distribution assembly are formed in the first deoxidizing area; an upper baffle plate and a lower baffle plate which are used for dividing the second deoxidizing area into a liquid inlet cavity, an electrochemical reaction cavity and a liquid outlet cavity are arranged in the second deoxidizing area; the liquid passing channel corresponds to the liquid inlet cavity; guide supporting plates are arranged below the upper baffle plate at intervals, and the lower end of the lower baffle plate is connected with the guide supporting plates; a cavity between the guide supporting plate and the bottom of the tank body is communicated with the liquid outlet cavity; and an electrochemical polar plate group is arranged in the electrochemical reaction cavity. The mixing type deoxidizing tank is high in integration degree, small in occupied space and good in deoxidizing effect.

Description

Technical Field

[0001] This utility model belongs to the field of deoxygenation technology, and in particular relates to a hybrid deoxygenation tank. Background Technology

[0002] A deaerator is a device used to remove dissolved oxygen and other harmful gases from liquid media. In the field of boiler feedwater treatment technology, to ensure that the feedwater entering the boiler meets the oxygen content requirements and to prevent boiler oxygen corrosion, deaerators are commonly used to treat the boiler feedwater and remove non-condensable gases such as oxygen. There are many common boiler water deaeration methods, such as thermal deaeration, vacuum deaeration, chemical deaeration, rust deaeration, and electrochemical deaeration. Each deaeration method has its own advantages and disadvantages; therefore, using a hybrid deaeration device that combines multiple deaeration modes can improve the deaeration effect and efficiency. However, existing hybrid deaeration devices are generally complex in structure, have many pipelines, are large in size, and occupy a lot of space. Therefore, developing a deaeration device with good deaeration effect, high efficiency, high integration, and small footprint remains an area for further research. Utility Model Content

[0003] In view of this, in order to solve the above-mentioned technical problems, this utility model proposes a hybrid deaerator with high integration, small space occupation, good deaeration effect and high efficiency.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A hybrid deaerator includes a tank body with an exhaust port at the top and a drain port at the bottom; it also includes a partition plate that divides the inner cavity of the tank body into an upper deaerator zone 1 and a lower deaerator zone 2, the partition plate having a liquid passage connecting the deaerator zone 1 and the deaerator zone 2; both the deaerator zone 1 and the deaerator zone 2 are provided with vacuum ports;

[0006] The deoxygenation zone is provided with an upper support plate, a lower support plate, a mixing assembly disposed between the upper and lower support plates, a liquid distribution assembly disposed below the upper support plate and suspended above the mixing assembly, and a steam distribution assembly disposed above the lower support plate and suspended below the mixing assembly; the upper and lower support plates are provided with multiple through holes; the sidewall of the deoxygenation zone is provided with a liquid inlet connected to the liquid distribution assembly and a steam inlet connected to the steam distribution assembly;

[0007] The deoxygenation zone II is provided with an upper baffle and a lower baffle that divide the deoxygenation zone into an inlet chamber, an electrochemical reaction chamber, and an outlet chamber in a horizontal direction. The upper end of the upper baffle is fixed to the partition plate, and the liquid passage corresponds to the inlet chamber. A horizontally arranged guide support plate is provided at intervals below the upper baffle, and the lower end of the lower baffle is connected to the guide support plate. The cavity formed between the guide support plate and the bottom of the tank communicates with the outlet chamber. An electrochemical electrode assembly is provided in the electrochemical reaction chamber, and a wiring port for the wires connecting the electrochemical electrode assembly is provided on the side wall of the tank.

[0008] In the deoxygenation zone, thermal deoxygenation technology is mainly used. Water enters through the liquid inlet and flows from top to bottom through the liquid distribution component; steam enters through the steam inlet and flows from bottom to top through the steam distribution component. Water and steam come into full contact in the mixing component, and the steam heats the water to saturation, causing dissolved oxygen in the water to escape and be discharged. This method can remove most of the solvent oxygen and serves as a pretreatment.

[0009] The second deoxygenation zone mainly adopts electrochemical deoxygenation technology. Water pretreated in the first deoxygenation zone enters the inlet chamber and then flows into the electrochemical reaction chamber. After being treated by the electrochemical anode and cathode reaction of the electrochemical electrode group, it flows into the outlet chamber. After completing the deoxygenation operation, it is extracted from the drain port. This method is not affected by the oxygen content in the feed water and can achieve deep deoxygenation.

[0010] The combination of deoxygenation zone one and deoxygenation zone two can effectively improve the deoxygenation effect. Furthermore, through structural optimization design, the deoxygenation efficiency can be improved. At the same time, through reasonable structural design, deoxygenation zone one and deoxygenation zone two are built in the same tank, which meets the requirements of high integration and small footprint.

[0011] Furthermore, the liquid receiving end of the liquid passage is a conical structure with the wide opening facing upwards.

[0012] Furthermore, a vapor-water separation assembly is provided in the cavity between the upper support plate and the top of the tank. The vapor-water separation assembly includes multiple separation nets arranged at equal intervals in the vertical direction, a separation liquid collection annular groove located below the separation nets, and a drainage pipe with one end connected to the inner cavity of the separation liquid collection annular groove. The separation nets are conical structures with the cone angle pointing upwards, and their lower edge is connected to the inner wall of the tank. The separation liquid collection annular groove is fixed to the inner wall of the tank and is located below the lower edge of the separation nets. The other end of the drainage pipe passes through the upper support plate and extends into the area between the upper support plate and the lower support plate.

[0013] The rising gas contains a large amount of water vapor. The gas is separated by the separation net. The gas exits through the exhaust port, while the liquid is intercepted and drips down. Most of the intercepted liquid flows along the separation net, collects at the bottom edge of the separation net, and drips into the separation liquid collection ring groove. Then, it is guided back to the area between the upper and lower support plates by the guide pipe.

[0014] Furthermore, there are multiple mixing components, evenly distributed between the upper support plate and the lower support plate; each mixing component includes a mounting base disposed on the upper support plate and the lower support plate, a rotating shaft with both ends rotatably connected to the mounting base, and a spiral blade disposed on the rotating shaft.

[0015] The spiral blades rotate under the impact of water and water vapor, which mixes and stirs the mixture, allowing the water and water vapor to come into full contact and enabling the water to escape more efficiently.

[0016] Furthermore, the spiral blade has multiple holes.

[0017] Water and water vapor can pass through the holes.

[0018] Furthermore, the liquid distribution assembly includes multiple annular tubes suspended above the spiral blades and arranged concentrically, a connecting pipe connecting each annular tube, and a connecting pipe connecting the annular tube and the liquid inlet; the lower end face of the annular tube has multiple liquid outlet holes evenly distributed.

[0019] Water is fed into each ring pipe through the liquid inlet and then flows out evenly through the ring pipe.

[0020] Furthermore, the steam distribution assembly includes multiple concentrically arranged annular pipes II suspended below the spiral blades, a connecting pipe II connecting each of the annular pipes II, and a connecting pipe II connecting the annular pipes II and the steam inlet; the lower end face of the annular pipes II has multiple steam outlet holes evenly distributed.

[0021] Steam is fed into each of the two ring pipes through the steam inlet, and then flows out evenly from the two ring pipes.

[0022] Furthermore, the bottom height of the upper baffle is lower than the bottom height of the electrochemical electrode assembly, and the top height of the lower baffle is higher than the top height of the electrochemical electrode assembly.

[0023] Compared with the prior art, the hybrid deaerator of this utility model has the following advantages:

[0024] The hybrid deaerator described in this utility model uses a combination of deaeration zone one and deaeration zone two for deaeration, resulting in good deaeration effect. Through the reasonable structural design of deaeration zone one, water and steam have sufficient contact time, allowing dissolved oxygen in the water to escape more effectively, resulting in high deaeration efficiency. Deaeration zone one and deaeration zone two are integrated into the same tank, resulting in a high degree of integration and a small footprint. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the internal structure of the hybrid deaerator described in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the liquid distribution component described in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the steam distribution component described in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Tank body, 2-Deoxygenation zone 1, 3-Deoxygenation zone 2, 4-Baffle plate, 5-Exhaust port, 6-Drain port, 7-Liquid passage, 8-Vacuum port, 9-Upper support plate, 10-Lower support plate, 11-Mixing assembly, 12-Liquid distribution assembly, 13-Steam distribution assembly, 14-Steam-liquid separation assembly, 15-Through hole, 16-Liquid inlet, 17-Steam inlet, 18-Mounting base, 19-Shaft, 20-Helical blade, 21-Hole 22-Ring pipe one, 23-Connecting pipe one, 24-Connecting pipe one, 25-Liquid outlet, 26-Ring pipe two, 27-Connecting pipe two, 28-Connecting pipe two, 29-Steam outlet, 30-Separation net, 31-Separation liquid collection ring groove, 32-Drain pipe, 33-Liquid inlet chamber, 34-Electrochemical reaction chamber, 35-Liquid outlet chamber, 36-Upper baffle plate, 37-Lower baffle plate, 38-Guide support plate, 39-Electrochemical electrode plate assembly, 40-Connecting port. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 3 As shown, a hybrid deaerator includes a tank body 1 and a partition plate 4 that divides the inner cavity of the tank body 1 into a deaerator zone 2 located at the top and a deaerator zone 3 located at the bottom; the top of the tank body 1 is provided with an exhaust port 5 and the bottom is provided with a drain port 6; the partition plate 4 is provided with a liquid passage 7 connecting the deaerator zone 2 and the deaerator zone 3, and the liquid receiving end of the liquid passage 7 is a conical structure with the wide opening facing upward; both the deaerator zone 2 and the deaerator zone 3 are provided with vacuum ports 8;

[0036] The deoxygenation zone 2 is equipped with an upper support plate 9, a lower support plate 10, a mixing assembly 11 located between the upper support plate 9 and the lower support plate 10, a liquid distribution assembly 12 located below the upper support plate 9 and suspended above the mixing assembly 11, a steam distribution assembly 13 located above the lower support plate 10 and suspended below the mixing assembly 11, and a steam-water separation assembly 14 located in the cavity between the upper support plate 9 and the top of the tank 1; multiple through holes 15 are distributed on the upper support plate 9 and the lower support plate 10; the sidewalls of the deoxygenation zone 2 are provided with... The liquid distribution assembly 12 is connected to a liquid inlet 16, and the steam distribution assembly 13 is connected to a steam inlet 17; there are multiple mixing assemblies 11, evenly distributed between the upper support plate 9 and the lower support plate 10; the mixing assembly 11 includes a mounting base 18 on the upper support plate 9 and the lower support plate 10, a rotating shaft 19 rotatably connected to the mounting base 18 at both ends, and a spiral blade 20 on the rotating shaft 19, with multiple holes 21 formed on the spiral blade 20; the liquid distribution assembly 12 includes multiple components suspended above the spiral blade 20 and... The system includes a concentrically arranged annular pipe 22, a connecting pipe 23 connecting each annular pipe 22, and a connecting pipe 24 connecting the annular pipe 22 and the liquid inlet 16; the lower end face of the annular pipe 22 has multiple liquid outlet holes 25 evenly distributed; the steam distribution assembly 13 includes multiple concentrically arranged annular pipes 26 suspended below the spiral blades 20, a connecting pipe 27 connecting each annular pipe 26, and a connecting pipe 28 connecting the annular pipe 26 and the steam inlet 17; the lower end face of the annular pipe 26 has multiple steam outlet holes 29 evenly distributed; and a steam-water separation assembly. Component 14 includes a plurality of separation nets 30 arranged at equal intervals in the vertical direction, a separation liquid collecting ring groove 31 located below the separation nets 30, and a drainage pipe 32 having one end connected to the inner cavity of the separation liquid collecting ring groove 31; the separation nets 30 are conical structures with the cone angle pointing upwards, and their lower edge is connected to the inner wall of the tank 1; the separation liquid collecting ring groove 31 is fixed to the inner wall of the tank 1 and is located below the lower edge of the separation nets 30; the other end of the drainage pipe 32 passes through the upper support plate 9 and extends into the area between the upper support plate 9 and the lower support plate 10;

[0037] The deoxygenation zone 3 is equipped with an upper baffle 36 and a lower baffle 37 that divide the deoxygenation zone 3 into an inlet chamber 33, an electrochemical reaction chamber 34, and an outlet chamber 35 in a horizontal direction. The upper end of the upper baffle 36 is fixed to the partition plate 4, and the liquid passage 7 corresponds to the inlet chamber 33. A horizontally arranged guide support plate 38 is arranged at intervals below the upper baffle 36, and the lower end of the lower baffle 37 is connected to the guide support plate 38. The cavity formed between the guide support plate 38 and the bottom of the tank body 1 is connected to the outlet chamber 35. An electrochemical electrode assembly 39 is provided in the electrochemical reaction chamber 34. The bottom height of the upper baffle 36 is lower than the bottom height of the electrochemical electrode assembly 39, and the top height of the lower baffle 37 is higher than the top height of the electrochemical electrode assembly 39. A wiring port 40 is provided on the side wall of the tank body 1 for the wires connected to the electrochemical electrode assembly 39 to pass through.

[0038] The working process of the hybrid deaerator described in this utility model is as follows:

[0039] Vacuum port 8 is connected to a vacuum pump for evacuation; water enters through liquid inlet 16 and is fed into each of the first ring pipes 22, then flows out evenly from the first ring pipe 22; steam enters through steam inlet 17 and is fed into each of the second ring pipes 26, then flows out evenly from the second ring pipe 26; water and steam come into full contact under the action of the mixing component 11, the steam heats the water to saturation, dissolved oxygen escapes from the water, and the rising gas mixed with the escaped oxygen is separated by the separation net 30. The gas exits through exhaust port 5, while the liquid is intercepted and flows along... The flow of the separation net 30 is collected at the bottom edge of the separation net 30 and drips into the separation liquid collection ring trough 31. Then, it is guided back to the area between the upper support plate 9 and the lower support plate 10 by the guide pipe 32. The water that has been pretreated in the deoxygenation zone 2 enters the liquid inlet chamber 33 through the liquid passage 7 and then flows into the electrochemical reaction chamber 34. After being treated by the electrochemical anode and cathode reaction of the electrochemical electrode group 39, it flows into the liquid outlet chamber 35. After completing the deoxygenation operation, it is extracted from the liquid outlet 6 and used as subsequent boiler water.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hybrid deaerator, comprising a tank body, wherein the top of the tank body is provided with an exhaust port and the bottom with a drain port, characterized in that: It also includes a partition plate that divides the inner cavity of the tank into an upper deoxygenation zone 1 and a lower deoxygenation zone 2. The partition plate is provided with a liquid passage connecting the deoxygenation zone 1 and the deoxygenation zone 2. Both the deoxygenation zone 1 and the deoxygenation zone 2 are provided with vacuum ports. The deoxygenation zone is provided with an upper support plate, a lower support plate, a mixing assembly disposed between the upper and lower support plates, a liquid distribution assembly disposed below the upper support plate and suspended above the mixing assembly, and a steam distribution assembly disposed above the lower support plate and suspended below the mixing assembly; the upper and lower support plates are provided with multiple through holes; the sidewall of the deoxygenation zone is provided with a liquid inlet connected to the liquid distribution assembly and a steam inlet connected to the steam distribution assembly; The deoxygenation zone II is provided with an upper baffle and a lower baffle that divide the deoxygenation zone into an inlet chamber, an electrochemical reaction chamber, and an outlet chamber in a horizontal direction. The upper end of the upper baffle is fixed to the partition plate, and the liquid passage corresponds to the inlet chamber. A horizontally arranged guide support plate is provided at intervals below the upper baffle, and the lower end of the lower baffle is connected to the guide support plate. The cavity formed between the guide support plate and the bottom of the tank communicates with the outlet chamber. An electrochemical electrode assembly is provided in the electrochemical reaction chamber, and a wiring port for the wires connecting the electrochemical electrode assembly is provided on the side wall of the tank.

2. The hybrid deaerator according to claim 1, characterized in that: The liquid receiving end of the liquid passage is a conical structure with the wide opening facing upwards.

3. The hybrid deaerator according to claim 1, characterized in that: A vapor-water separation assembly is provided in the cavity between the upper support plate and the top of the tank. The vapor-water separation assembly includes multiple separation nets arranged at equal intervals in the vertical direction, a separation liquid collection ring groove located below the separation nets, and a drainage pipe with one end connected to the inner cavity of the separation liquid collection ring groove. The separation net is a conical structure with the cone angle pointing upwards, and its lower edge is connected to the inner wall of the tank. The separation liquid collection annular groove is fixed to the inner wall of the tank and located below the lower edge of the separation net; the other end of the drainage pipe passes through the upper support plate and extends into the area between the upper support plate and the lower support plate.

4. The hybrid deaerator according to claim 1, characterized in that: The mixing components are multiple and are evenly distributed between the upper support plate and the lower support plate; the mixing components include mounting bases on the upper support plate and the lower support plate, rotating shafts rotatably connected to the mounting bases at both ends, and helical blades on the rotating shafts.

5. The hybrid deaerator according to claim 4, characterized in that: The spiral blade has multiple holes.

6. The hybrid deaerator according to claim 4, characterized in that: The liquid distribution assembly includes multiple annular tubes suspended above the spiral blades and arranged concentrically, a connecting pipe connecting each annular tube, and a connecting pipe connecting the annular tube and the liquid inlet; the lower end face of the annular tube has multiple liquid outlet holes evenly distributed.

7. The hybrid deaerator according to claim 4, characterized in that: The steam distribution assembly includes multiple concentric ring pipes suspended below the spiral blades, a connecting pipe connecting each ring pipe, and a connecting pipe connecting the ring pipes and the steam inlet; the lower end face of each ring pipe has multiple steam outlet holes evenly distributed.

8. The hybrid deaerator according to claim 1, characterized in that: The bottom height of the upper baffle is lower than the bottom height of the electrochemical electrode assembly, and the top height of the lower baffle is higher than the top height of the electrochemical electrode assembly.

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