Aeration device and boiler make-up water treatment system

Abstract

The utility model discloses an aeration device, which is applied to a boiler make-up water treatment system and comprises an aeration component and an air inlet pipe, the aeration assembly is used for being arranged in a water tank of the boiler make-up water treatment system and comprises a main pipe and a plurality of sub-pipes, the main pipe is provided with a plurality of sub-connectors and an air inlet, the sub-pipes are communicated with the sub-connectors of the main pipe one by one, and aeration holes are formed in the pipe walls of the sub-pipes; the air inlet pipe penetrates into the water tank and is communicated with the air inlet of the main pipe. According to the scheme, through the arrangement of the main pipe, the plurality of sub pipes and the air inlet pipe, carbon dioxide is partially removed by utilizing the stirring and blowing-off effects of compressed air blown out of the aeration holes and water, and the PH value is increased by adopting the mode. The utility model further discloses a boiler make-up water treatment system using the aeration device.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an aeration device and a boiler feed water treatment system. Background Art

[0002] In order to provide feed water quality that meets the needs of boiler operation, it is necessary to treat the boiler feed water, treat the suspended matter, colloids, organic matter, various dissolved salts and gases in the raw water, so as to obtain boiler feed water, and adjust the water quality in the boiler so that the quality of boiler feed water meets the standards, thereby preventing scaling, salt accumulation and corrosion in the boiler water vapor system.

[0003] In order to increase the pH value of the water treated by the system, the existing boiler feed water treatment system can only achieve the goal by adding sodium hydroxide in a chemical way; however, the addition of sodium hydroxide affects the water quality to a certain extent. Utility Model Content

[0004] In view of this, the utility model provides an aeration device, which reduces the carbon dioxide content of water treated by the boiler feed water treatment system, thereby increasing the pH value without affecting the water quality.

[0005] The utility model also provides a boiler feed water treatment system comprising the aeration device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An aeration device, applied to a boiler feed water treatment system, comprises: an aeration component and an air inlet pipe;

[0008] The aeration assembly is used to be arranged in the water tank of the boiler feed water treatment system, wherein the aeration assembly comprises: a main pipe and a plurality of sub-pipes, the main pipe is provided with a plurality of sub-interfaces and an air inlet, the plurality of sub-pipes are connected to the plurality of sub-interfaces of the main pipe one by one, and the pipe walls of the plurality of sub-pipes are provided with aeration holes;

[0009] The air inlet pipe is used to penetrate into the water tank and communicate with the air inlet of the main pipe.

[0010] Preferably, the plurality of sub-tubes are divided into two groups, the plurality of sub-interfaces are divided into two groups, the two groups of sub-interfaces are symmetrically distributed about the axis of the mother tube, and the two groups of sub-tubes are connected to the two groups of sub-interfaces in a one-to-one correspondence.

[0011] Preferably, among the plurality of sub-tubes in any one of the two groups of sub-tubes, the sub-tube located in the middle of the mother tube has the longest length, and the remaining sub-tubes are gradually shortened along both ends of the mother tube.

[0012] Preferably, the number of the sub-tubes in any one of the two groups of sub-tubes is five, seven or nine.

[0013] Preferably, the aeration assembly further comprises: a plurality of joints;

[0014] The plurality of sub-tubes are connected to the plurality of sub-interfaces through the plurality of joints one by one, and the corresponding sub-tubes and the corresponding sub-interfaces can be detachably assembled with the corresponding joints.

[0015] Preferably, a control valve and a drain valve are sequentially arranged on the air inlet pipe.

[0016] Preferably, the number of the aeration components and the number of the air inlet pipes are both four;

[0017] The four groups of aeration components are used to be respectively arranged in the UF water tank, the first-level RO water tank, the second-level RO water tank and the desalted water tank of the boiler feed water treatment system; the four groups of air inlet pipes respectively penetrate into the UF water tank, the first-level RO water tank, the second-level RO water tank and the desalted water tank and are connected with the air inlets of the corresponding mother pipes of the aeration components.

[0018] Preferably, the mother pipe and the plurality of child pipes are all made of UPVC material.

[0019] Preferably, it also includes: an oil-free air compressor and a compressed air tank;

[0020] The compressed air tank is located between the oil-free air compressor and the air intake pipe; and both the oil-free air compressor and the air intake pipe are connected to the compressed air tank.

[0021] A boiler feed water treatment system comprises: the aeration device as described above.

[0022] It can be seen from the above technical solution that the aeration device provided by the utility model, through the arrangement of a main pipe, multiple sub-pipes and an air inlet pipe, utilizes the stirring and blowing effect of compressed air blown out of the aeration holes and water to partially remove carbon dioxide, thereby improving the pH value.

[0023] The utility model also provides a boiler feed water treatment system. Since the above-mentioned aeration device is adopted, it also has corresponding beneficial effects. The details can be referred to the above description, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of the aeration device and the water tank provided in the embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the structure of the aeration device provided in the embodiment of the utility model;

[0027] Figure 3 A first structural schematic diagram of an aeration device provided in an embodiment of the utility model that hides aeration holes and joints;

[0028] Figure 4 A second structural schematic diagram of the aeration device provided in an embodiment of the utility model, in which the aeration holes and joints are hidden.

[0029] Among them, 1 is an aeration assembly, 11 is a main pipe, 12 is a sub-pipe, 13 is a sub-interface, 14 is an air inlet, 15 is an aeration hole, and 16 is a joint;

[0030] 2 is an air inlet pipe, 21 is a control valve, and 22 is a steam trap;

[0031] 3 is a water tank, 30 is a UF water tank, 31 is a primary RO water tank, 32 is a secondary RO water tank, and 33 is a demineralized water tank;

[0032] 4 is an oil-free air compressor, and 5 is a compressed air tank. DETAILED DESCRIPTION

[0033] 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.

[0034] The aeration device provided in the embodiment of the utility model is applied to a boiler feed water treatment system, an aeration component 1 and an air inlet pipe 2;

[0035] The aeration assembly 1 is used to be arranged in a water tank 3 of a boiler feed water treatment system, wherein the aeration assembly 1 comprises: a main pipe 11 and a plurality of sub-pipes 12, the main pipe 11 is provided with a plurality of sub-interfaces 13 and an air inlet 14, the plurality of sub-pipes 12 are connected one by one to the plurality of sub-interfaces 13 of the main pipe 11, and the pipe walls of the plurality of sub-pipes 12 are provided with aeration holes 15;

[0036] The air inlet pipe 2 is used to penetrate into the water tank 3 and communicate with the air inlet 14 of the main pipe 11.

[0037] In the above technical solution, the flow direction of compressed air into the water tank 3 is as follows: Figure 1 As shown by the arrows, the compressed air is blown out from the aeration holes 15 to the water body in the water tank through the air inlet pipe 2, the air inlet 14, the main pipe 11, the multiple sub-interfaces 13 and the multiple sub-pipes 12 in sequence. The process of blowing the compressed air from the aeration holes 15 to the water body fully utilizes the stirring and stripping effect of the compressed air and water, so that the carbon dioxide dissolved in the liquid can be partially removed, thereby achieving the effect of improving the pH value of the boiler feed water treatment system.

[0038] Compared with the existing technology, through the arrangement of the main pipe 11, multiple sub-pipes 12 and the air inlet pipe 2, the carbon dioxide can be partially removed by utilizing the stirring and blowing effect of the compressed air blown out from the aeration holes 15 and the water. In this way, the pH value is increased by physical means, avoiding the use of traditional chemical methods such as adding sodium hydroxide. Although the pH value can be increased, the water quality is affected by the addition of salt.

[0039] Further, such as Figure 2-Figure 4 As shown, the plurality of sub-tubes 12 are divided into two groups, the plurality of sub-interfaces 13 are divided into two groups, the two groups of sub-interfaces 13 are symmetrically distributed about the axial direction of the mother tube 11, and the two groups of sub-tubes 12 are connected to the two groups of sub-interfaces 13 in a one-to-one correspondence. In this solution, by arranging the plurality of sub-tubes 12 on both sides of the axial direction of the mother tube 11, the stirring and stripping effect of the compressed air and water is made more uniform, thereby increasing the separation speed of the carbon dioxide.

[0040] Furthermore, if Figure 2-Figure 4 As shown, among the multiple sub-tubes 12 in any of the two groups of sub-tubes 12, the sub-tube 12 located in the middle of the main tube has the longest length, and the remaining sub-tubes 12 are gradually shortened along the two ends of the main tube 11. In this scheme, the length distribution of the sub-tubes 12 is similar to a circle, which matches the circular structure of the water tank; such a configuration makes the mixing and stripping of compressed air and water more uniform, and maximizes the use of the space in the water tank 3.

[0041] Further, such as Figure 2 As shown, the number of sub-tubes 12 in any one of the two groups of sub-tubes 12 is five. Such an arrangement is beneficial to improving the working efficiency of dissolving carbon dioxide.

[0042] Further, such as Figure 2 As shown, the aeration assembly further includes: a plurality of joints 16;

[0043] The plurality of sub-pipes 12 are connected to the plurality of sub-interfaces 13 one by one through the plurality of joints 16, and the corresponding sub-pipes 12 and the corresponding sub-interfaces 13 are detachably assembled with the corresponding joints 16. In this scheme, when the aeration device is not needed, the sub-pipes 12 and the main pipe 11 can be separated by the joints 16, and when the aeration device is needed, the sub-pipes 12 and the main pipe 11 can be assembled by the joints 16, which is conducive to the flexible use of the aeration device; in addition, when the aeration device is needed, the main pipe 11 and the sub-pipes 12 can be put into the water tank for assembly.

[0044] In some schemes, such as Figure 2-Figure 3 As shown, the plurality of sub-tubes 12 are arranged perpendicular to the main tube 11, and the plurality of sub-tubes 12 and the main tube 11 are located in the same plane.

[0045] Further, such as Figure 1 As shown, the air inlet pipe 2 is provided with a control valve 21 and a drain valve 22 in sequence. In this solution, the control valve 21 is used to control the flow of compressed air, and the drain valve 22 is used to prevent the formation of water in the main pipe 11 and the inability to discharge compressed air and to prevent other unexpected situations; in addition, in some embodiments, the air inlet pipe 2 is provided with a control valve 21, a water stop valve and a drain valve 22 in sequence.

[0046] Further, the number of the aeration assembly and the air inlet pipe 2 are both four;

[0047] The four groups of aeration components are used to be respectively arranged in the UF water tank 30, the first-level RO water tank 31, the second-level RO water tank 32 and the desalted water tank 33 of the boiler feed water treatment system; the four groups of air inlet pipes 2 are respectively inserted into the UF water tank 30, the first-level RO water tank 31, the second-level RO water tank 32 and the desalted water tank 33 and are connected with the air inlet 14 of the mother pipe 11 of the corresponding aeration component.

[0048] In the above scheme, aeration components are arranged in the UF water tank 30, the first-level RO water tank 31, the second-level RO water tank 32 and the desalted water tank 33, so that the pH value of the water treated by the boiler feed water treatment system is significantly improved; in addition, the aeration components are arranged at the bottom of the water tank.

[0049] Furthermore, the main pipe 11 and the plurality of sub-pipes 12 are all made of UPVC material. The use of UPVC material is beneficial to reducing the cost of the aeration device and enhancing corrosion resistance. It should be noted that the end of the sub-pipe 12 away from the main pipe 11 is sealed with a sealing cap.

[0050] Furthermore, it also includes: an oil-free air compressor 4 and a compressed air tank 5;

[0051] The compressed air tank 5 is located between the oil-free air compressor 4 and the air inlet pipe 2, and the oil-free air compressor 4 and the air inlet pipe 2 are both connected to the compressed air tank 5. In this scheme, the compressed air tank 5 is used to store the compressed air in and out, and the oil-free air compressor 4 can speed up the speed of compressed air coming out of the aeration hole 15, which is beneficial to increase the speed of dissolving carbon dioxide.

[0052] The utility model also provides a boiler feed water treatment system, including: the aeration device as described above. Since the present solution adopts the aeration device as described above, it also has corresponding beneficial effects, which can be specifically referred to the above description and will not be repeated here.

[0053] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown separately in the drawings can be combined with each other arbitrarily, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0054] The present invention is further described below in conjunction with specific embodiments:

[0055] In this solution, an aeration device is applied to a boiler feed water treatment system, avoiding the need to add sodium hydroxide into a water tank to improve the pH problem.

[0056] Through this device, compressed air is used to enter the water tank. Relying on the blowing effect of compressed air, according to Henry's law, the pH values ​​in the UF water tank, the first-level RO water tank, the second-level RO water tank and the desalted water tank are improved to a certain extent, so as to reduce and lower the amount of chemical addition, so as to mitigate the influence of chemical addition on water quality interference and maintain the normal continuity of desalted water treatment operation.

[0057] The main pipe 11 is DN65, and the sub-pipe 12 is DN40. The main pipe 11 is connected to the sub-pipe 12 through the interface 16. The two ends of the main pipe 11 are blocked. The sub-pipes 12 are arranged in parallel, and the distance between adjacent sub-pipes 12 is 50cm. The surrounding wall of the sub-pipe 12 is provided with aeration holes 15 with a hole diameter of 6mm, divided into four rows, and the adjacent rows of holes are staggered and evenly distributed, and the hole spacing is 5cm. The air inlet pipe 2 is a DN50 stainless steel pipe, connected to a DN65 stop valve through a flange, and the other side of the stop valve is connected to the main pipe 11 made of UPVC material; a ball valve and a check valve are installed before the air inlet pipe 2 enters each water tank.

[0058] This solution makes full use of the stirring and stripping effect of compressed air and water, and according to Henry's law, partially removes dissolved carbon dioxide, thereby improving the pH value of the UF water tank 30, the first-level RO water tank 31, the second-level RO water tank 32 and the desalted water tank 33. After the new aeration device is put into operation, the first-level RO water tank 31, the second-level RO water tank 32 and the desalted water tank 33 can maintain a high pH value for 24 hours, which can not only reduce the addition of chemicals but also prevent the system from being affected by the interference of the chemical components, and maintain the normal continuity of the desalted water treatment operation. This device is an auxiliary supplement to the implementation and operation effect of the chemical addition, and cannot completely replace the dosing device. This device belongs to the category of energy saving and consumption reduction.

[0059] Advantages of this technical solution:

[0060] 1. The modification of existing equipment is minor. It only requires the installation of UPVC aeration devices, air inlet pipes and matching pipeline valves in each water tank. The method is simple and feasible, with convenient construction, small workload and low energy consumption.

[0061] 2. The pH value of the water quality at the inlet and outlet of each water tank aeration device has been significantly increased. The original dosing system is used as a supplement, and the change effect can be monitored at any time.

[0062] 3. Use compressed air to increase the pH value of water in each water tank through the water tank aeration device, which saves the amount of chemical addition compared with the original operation mode, and is an energy-saving and consumption-reducing operation mode.

[0063] The key points of this technical solution:

[0064] 1. The pipes of each water tank aeration device are made of UPVC material, and the pipes will not affect the water quality.

[0065] 2. The sub-pipe of the aeration device adopts large-diameter openings with an aperture of 6mm, which are divided into four rows. Adjacent rows of holes are staggered and evenly distributed to prevent the formation of dissolved gas. A check valve and a control valve are installed in front of the water inlet tank, and a drain valve is installed at the vertical pipe position of the compressed air main pipe to prevent the formation of drain in the pipe from being unable to be discharged and accidents from occurring.

[0066] 3. The compressed air used in the aeration device should be oil-free as much as possible to prevent the oil in the air from affecting the water quality. The aeration device will have obvious effects after use and will not have any impact on existing equipment.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aeration device, applied to a boiler feed water treatment system, characterized in that: include: An aeration assembly (1) and an air inlet pipe (2); The aeration assembly (1) is used to be arranged in a water tank (3) of the boiler feed water treatment system, wherein the aeration assembly (1) comprises: a main pipe (11) and a plurality of sub-pipes (12), the main pipe (11) being provided with a plurality of sub-interfaces (13) and an air inlet (14), the plurality of sub-pipes (12) being connected one by one to the plurality of sub-interfaces (13) of the main pipe (11), and the pipe walls of the plurality of sub-pipes (12) being provided with aeration holes (15); The air inlet pipe (2) is used to penetrate into the water tank (3) and communicate with the air inlet (14) of the main pipe (11).

2. The aeration device according to claim 1, characterized in that: The plurality of sub-tubes (12) are divided into two groups, the plurality of sub-interfaces (13) are divided into two groups, the two groups of sub-interfaces (13) are symmetrically distributed about the axis of the mother tube (11), and the two groups of sub-tubes (12) are connected to the two groups of sub-interfaces (13) in a one-to-one correspondence.

3. The aeration device according to claim 2, characterized in that: Among the plurality of sub-tubes (12) in any one of the two groups of sub-tubes (12), the sub-tube (12) located in the middle of the mother tube (11) is the longest, and the remaining sub-tubes (12) are gradually shortened along both ends of the mother tube (11).

4. The aeration device according to claim 2, characterized in that: The number of the sub-tubes (12) in any one of the two groups of sub-tubes (12) is five, seven or nine.

5. The aeration device according to claim 1, characterized in that: The aeration assembly further comprises: a plurality of joints (16); The plurality of sub-tubes (12) are connected to the plurality of sub-interfaces (13) one by one through the plurality of joints (16), and the corresponding sub-tubes (12) and the corresponding sub-interfaces (13) are both detachably assembled with the corresponding joints (16).

6. The aeration device according to claim 1, characterized in that: The air inlet pipe (2) is provided with a control valve (21) and a drain valve (22) in sequence.

7. The aeration device according to claim 1, characterized in that: The number of the aeration components and the number of the air inlet pipes (2) are both four; The four groups of aeration components are used to be respectively arranged in a UF water tank (30), a primary RO water tank (31), a secondary RO water tank (32) and a desalted water tank (33) of the boiler feed water treatment system; the four groups of air inlet pipes (2) respectively penetrate into the UF water tank (30), the primary RO water tank (31), the secondary RO water tank (32) and the desalted water tank (33) and are connected to the air inlet (14) of the corresponding main pipe (11) of the aeration component.

8. The aeration device according to claim 1, characterized in that: The main pipe (11) and the plurality of sub-pipes (12) are all made of UPVC material.

9. The aeration device according to claim 1, characterized in that: Also includes: An oil-free air compressor (4) and a compressed air tank (5); The compressed air tank (5) is located between the oil-free air compressor (4) and the air intake pipe (2); and the oil-free air compressor (4) and the air intake pipe (2) are both connected to the compressed air tank (5).

10. A boiler feed water treatment system, characterized in that: include: An aeration device as claimed in any one of claims 1 to 9.

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