Vacuum deoxidation system

Abstract

The vacuum deoxidation system comprises a circulating pump and degassing tanks, the two degassing tanks are arranged and assembled into a secondary deoxidation device, the secondary deoxidation device comprises a low-position degassing tank and a high-position degassing tank, the high-position degassing tank is arranged above the low-position degassing tank, a vacuum pump is fixedly installed on the high-position degassing tank, a first water inlet is formed above the low-position degassing tank, and a second water inlet is formed below the high-position degassing tank. The bottom of the low-position degassing tank is provided with a first water outlet, the upper part of the high-position degassing tank is provided with a second water inlet, the bottom of the high-position degassing tank is provided with a second water outlet, the high-position degassing tank is provided with a gas inlet, the first water outlet is communicated with the second water inlet, the spraying device is arranged at the first water inlet, and the gas filling device is communicated with the spraying device. And the gas charging device is fixedly mounted at a gas inlet of the high-position degassing tank. By arranging the high degassing tank and the low degassing tank, the spraying device in the low degassing tank can improve the degassing efficiency, and the inflating device in the high degassing tank can reduce the participation amount of oxygen in finished product water.

Description

Technical Field

[0001] This utility model relates to the field of ultrapure water preparation technology, and in particular to a vacuum deoxygenation system. Background Technology

[0002] The purpose of developing a vacuum deoxygenation system is to solve a series of problems caused by the presence of gases in closed water circulation systems, and to improve the system's operating efficiency and stability. These gases can lead to low system efficiency, equipment damage, and increased noise. A vacuum deoxygenation system can quickly and effectively remove free and dissolved gases from the system, thereby improving its operating efficiency and stability.

[0003] While most vacuum deoxygenation systems on the market are widely applicable, they still cannot meet the industry's increasingly demanding requirements in terms of deoxygenation speed and residual oxygen content in the finished water. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum deoxygenation system to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] The vacuum deoxygenation system includes a circulating pump and a degassing tank, with two degassing tanks arranged and assembled into a secondary deoxygenation device;

[0007] The secondary deoxygenation device includes a low-level degassing tank and a high-level degassing tank;

[0008] A high-level degassing tank is provided above the low-level degassing tank, and a vacuum pump is fixedly installed on the high-level degassing tank. The suction port of the vacuum pump is connected to the interior of the high-level degassing tank.

[0009] The low-position degassing tank is provided with a first water inlet at the top, a first exhaust port at the top, a circulation outlet at the bottom, and a first water outlet at the bottom.

[0010] The high-level degassing tank is provided with a second water inlet at the top, a second exhaust port at the top, a circulation inlet at the bottom, a second water outlet at the bottom, and an air inlet at the top.

[0011] The first outlet is connected to the second inlet;

[0012] A connecting pipe is provided between the circulation inlet and the circulation outlet, and a circulation pump is fixedly installed on the connecting pipe.

[0013] It also includes a spraying device, which is located at the first water inlet;

[0014] It also includes an inflation device, which is fixedly installed at the air inlet of the high-level degassing tank.

[0015] By adopting the above technical solution, the water to be treated first enters the low-level deaeration tank, which enters through a spray device. The spray device turns the water into a mist, and countless tiny water droplets fall onto the water grate, where they are further broken into smaller droplets or a water film. Then, the high-temperature steam in the low-level deaeration tank heats the water, causing it to boil and release its internal gases. After this initial deoxygenation process, the water becomes pre-deaerated water, which is then pumped into the high-level deaeration tank by a circulating pump. During the repeated deaeration process in the high-level deaeration tank, a large amount of water is sprayed into the water using an aeration device. Nitrogen gas, which is insoluble in water, displaces oxygen. The displaced oxygen and other gases leave the secondary deoxygenation unit via a vacuum pump. The finished water, processed in the high-level degassing tank, then proceeds to the next stage. This two-stage degassing unit improves degassing efficiency and optimizes system performance. The spray system further enhances degassing efficiency, while the aeration system ensures that the removed oxygen does not return to the finished water, thus further reducing residual oxygen and effectively improving the purity of the ultrapure water.

[0016] In a further embodiment, the top of the low-level degassing tank is provided with a first exhaust port, and the top of the high-level degassing tank is provided with a second exhaust port.

[0017] The vacuum pump is provided with a first suction port and a second suction port;

[0018] A first exhaust pipe is provided between the first air intake and the first exhaust port, and a second exhaust pipe is provided between the second air intake and the second exhaust port.

[0019] By adopting the above technical solution, the vacuum pump simultaneously performs negative pressure evacuation of both the low-level degassing tank and the high-level degassing tank. This balances the pressure within the two tanks and avoids the efficiency reduction caused by oxygen re-incorporating into the water during the pre-degassing process. After the vacuum pump reduces the internal pressure, the boiling point of the water also decreases. With the help of the heat storage body inside the degassing tank, energy waste can be effectively avoided, allowing the water to maintain boiling for a long time with low power consumption.

[0020] In a further embodiment, a gas storage device is also included, which is spaced apart from the low-level degassing tank.

[0021] The inflation device includes an air inlet pipe, a nozzle, and a diffuser. The nozzle and the air storage device are connected through the air inlet pipe. The air inlet pipe is threadedly connected to the nozzle, and a diffuser is detachably installed on the nozzle.

[0022] By adopting the above technical solution, the gas storage device is mainly connected to the nozzle and is used to cooperate with the air inlet pipe to supply nitrogen to the water in a stable and rapid manner through the nozzle and the diffuser on the nozzle.

[0023] In a further embodiment, a discharge pump is provided on the second outlet.

[0024] By adopting the above technical solution, the discharge pump can extract the finished water that has undergone deoxygenation and degassing treatment in the high-level degassing tank from the tank body and pump it to the next process, such as further purification or boiler water supply.

[0025] In a further embodiment, a liquid level detection device and a pressure detection device are also included, and the secondary deoxygenation device is provided with multiple liquid level detection devices and multiple pressure detection devices.

[0026] By adopting the above technical solutions, the liquid level detection device can help pumps such as discharge pumps and circulation pumps ensure that their working efficiency and duration meet the requirements, while the pressure detection device can detect whether the internal pressure of the secondary degassing device meets the degassing requirements and whether the operation is safe.

[0027] In a further embodiment, a control device is also included, with a touch screen disposed above the control device, and the control device is electrically connected to the plurality of liquid level detection devices and the plurality of pressure detection devices via wires.

[0028] By adopting the above technical solution, the control device is mainly designed to facilitate user operation and parameter setting. The entire control system adopts a full Chinese display interface, which can effectively and conveniently generate reports from the data during operation, and quickly output the recent status table of the corresponding data when an error occurs.

[0029] In a further embodiment, an observation platform is also included, which includes an observation platform and a staircase. A first handrail is provided on the observation platform, and a second handrail is provided on the staircase.

[0030] By adopting the above technical solution, the main function of the observation platform is to facilitate the observation and testing of the high-level degassing tank. It also facilitates equipment inspection or maintenance when maintenance is scheduled or a malfunction occurs. In addition, the observation platform is equipped with corresponding protective handrails to prevent accidental falls during inspection, thereby improving safety during operation.

[0031] In summary, this utility model has the following beneficial effects:

[0032] 1. By setting up a two-stage deaeration device, the high-level deaeration tank and the low-level deaeration tank of the two-stage deaeration device can improve the deaeration efficiency and reduce the residual oxygen. The low-level deaeration tank performs pre-treatment for deaeration, while the high-level deaeration tank performs secondary deaeration on the pre-treated water. The water inlet of the low-level deaeration tank is a spray device, which is mainly an axial flow solid cone nozzle, that is, an atomizing nozzle. It can spray the water into the interior of the deaeration tank in a very uniform cone solid spray form, thereby improving the deaeration efficiency. The aeration device in the high-level deaeration tank can also fill the water with nitrogen, thereby squeezing out the space for oxygen and preventing the deaerated oxygen from dissolving back into the water. This further reduces the amount of oxygen in the water and significantly improves the purity of the ultrapure water.

[0033] 2. By setting up liquid level detection devices and pressure detection devices, the system can confirm the efficiency of the pumps such as the discharge pump and circulation pump, and whether the operation process meets the requirements. The pressure detection device can detect whether the internal pressure of the secondary degassing device meets the degassing requirements and whether the operation is safe. Together with the control device, it can facilitate user operation and parameter setting. The entire control system adopts a fully Chinese display interface, which can effectively and conveniently generate reports from the data during operation. When an error occurs, it can quickly output the recent status table of the corresponding data, which can improve the stability of operation and speed up the troubleshooting efficiency.

[0034] 3. The observation platform facilitates the observation and testing of the high-level degassing tank. It also makes it easier to inspect or repair the equipment when maintenance is due or a malfunction occurs. In addition, the observation platform is equipped with corresponding protective handrails to prevent accidental falls during inspection, thereby improving the safety of operation. Attached Figure Description

[0035] Figure 1 This is an overall schematic diagram of the present invention;

[0036] Figure 2 This is a schematic diagram illustrating the internal structure of the secondary deoxygenation device in this utility model.

[0037] In the diagram, 1 is a circulating pump; 2 is a secondary deoxygenation device; 21 is a low-level degassing tank; 22 is a high-level degassing tank; 3 is a vacuum pump; 4 is a spray device; 5 is an air filling device; 51 is an air inlet pipe; 52 is a nozzle; 53 is a diffuser; 6 is an air storage device; 7 is a discharge pump; 8 is a control device; and 9 is an observation platform. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0040] like Figure 1 - Figure 2 As shown, the vacuum deoxygenation system includes a circulating pump 1 and a degassing tank, with the two degassing tanks arranged and assembled into a secondary deoxygenation device 2;

[0041] The secondary deoxygenation device 2 includes a low-level degassing tank 21 and a high-level degassing tank 22;

[0042] A high-level degassing tank 22 is provided above the low-level degassing tank 21. A vacuum pump 3 is fixedly installed on the high-level degassing tank 22, and the suction port of the vacuum pump 3 is connected to the interior of the high-level degassing tank 22.

[0043] The low-position degassing tank 21 is provided with a first water inlet at the top, a first exhaust port at the top, a circulation outlet at the bottom, and a first water outlet at the bottom.

[0044] The high-level degassing tank 22 is provided with a second water inlet at the top, a second exhaust port at the top, a circulation inlet at the bottom, a second water outlet at the bottom, and an air inlet on the top.

[0045] The first outlet is connected to the second inlet;

[0046] A connecting pipe is provided between the circulation inlet and the circulation outlet, and a circulation pump 1 is fixedly installed on the connecting pipe;

[0047] It also includes a spray device 4, which is located at the first water inlet;

[0048] It also includes an inflation device 5, which is fixedly installed at the air inlet of the high-level degassing tank 22.

[0049] In this embodiment, the water to be treated first enters the low-level deaeration tank 21 through the spray device 4, which turns the water into a spray. Then, the high-temperature steam in the low-level deaeration tank 21 heats the water, and after boiling, the water releases the internal gas. After preliminary treatment, it becomes pre-deaerated water, which is then pumped into the high-level deaeration tank 22 by the circulation pump 1. During the repeated deoxygenation process, the high-level deaeration tank 22 also uses the aeration device 5 to spray a large amount of nitrogen into the water. Nitrogen is insoluble in water, but it will displace the oxygen. The displaced oxygen and other gases will leave the secondary deaeration device 2 through the vacuum pump 3. The finished water treated in the high-level deaeration tank 22 then enters the next process. This two-stage deaeration device can improve deaeration efficiency and optimize system performance. The spray device 4 in the device can further improve the deaeration efficiency, and the aeration device 5 can ensure that the desorbed oxygen does not return to the finished water, thereby ensuring a further reduction in oxygen residue and effectively improving the purity of ultrapure water.

[0050] Furthermore, the top of the low-level degassing tank 21 is provided with a first exhaust port, and the top of the high-level degassing tank 22 is provided with a second exhaust port.

[0051] The vacuum pump 3 is equipped with a first suction port and a second suction port;

[0052] A first exhaust pipe is provided between the first intake port and the first exhaust port, and a second exhaust pipe is provided between the second intake port and the second exhaust port.

[0053] In this embodiment, the vacuum pump 3 simultaneously performs negative pressure extraction on both the low-level degassing tank 21 and the high-level degassing tank 22. This balances the pressure within the two tanks and also prevents the efficiency reduction caused by oxygen re-incorporation into the water during the pre-degassing process. After the vacuum pump 3 reduces the internal pressure, the boiling point of the water also decreases. With the help of the heat storage body inside the degassing tank, energy waste can be effectively avoided, allowing the water to maintain boiling for a long time with low power consumption.

[0054] Furthermore, such as Figure 1 - Figure 2 As shown, it also includes a gas storage device 6, which is spaced apart from the low-level degassing tank 21;

[0055] The inflation device 5 includes an air inlet pipe 51, a nozzle 52, and a diffuser 53. The nozzle 52 and the air storage device 6 are connected through the air inlet pipe 51. The air inlet pipe 51 is threadedly connected to the nozzle 52. The diffuser 53 is detachably installed on the nozzle 52.

[0056] In this embodiment, the gas storage device 6 is mainly connected to the nozzle 52 and is used to cooperate with the air inlet pipe 51 to supply nitrogen to the water in a stable and rapid manner through the nozzle 52 and the diffuser 53 on the nozzle 52.

[0057] Furthermore, a discharge pump 7 is installed on the second outlet.

[0058] In this embodiment, the discharge pump 7 can extract the finished water that has undergone deoxygenation and degassing treatment in the high-level degassing tank 22 from the tank body and pump it to the next process, such as further purification or boiler water supply.

[0059] Furthermore, it also includes a liquid level detection device and a pressure detection device. The secondary deoxygenation device 2 is equipped with multiple liquid level detection devices and multiple pressure detection devices.

[0060] In this embodiment, the liquid level detection device can help the discharge pump 7, circulation pump 1 and other pumps ensure that their working efficiency and duration meet the requirements, while the pressure detection device can detect whether the internal pressure of the secondary degassing device meets the degassing requirements and whether the operation is safe.

[0061] Furthermore, it also includes a control device 8, which has a touch screen on its top and is electrically connected to multiple liquid level detection devices and multiple pressure detection devices via wires.

[0062] In this embodiment, the control device 8 is mainly for the convenience of user operation and parameter setting. The entire control system adopts a full Chinese display interface, which can effectively and conveniently generate reports of data during operation, and quickly output the recent status table of the corresponding data when an error occurs.

[0063] Furthermore, it also includes an observation platform 9, which includes an observation platform and a staircase. A first handrail is provided on the observation platform, and a second handrail is provided on the staircase.

[0064] In this embodiment, the main function of the observation platform 9 is to facilitate the observation and inspection of the high-level degassing tank 22. It also facilitates the inspection or maintenance of the equipment when the maintenance cycle is reached or a fault occurs. In addition, the observation platform 9 is also equipped with corresponding protective handrails to prevent accidental falls during the inspection process, thereby improving the safety during operation.

[0065] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0066] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. Vacuum deoxidizing system comprising a circulation pump (1) and a degassing tank, characterized in that: Two degassing tanks are arranged and assembled into a two-stage deoxidizing device (2); The two-stage deoxidizing device (2) comprises a low-position degassing tank (21) and a high-position degassing tank (22); The high-position degassing tank (22) is arranged above the low-position degassing tank (21), and a vacuum pump (3) is fixedly installed on the high-position degassing tank (22), and the suction port of the vacuum pump (3) is in communication with the interior of the high-position degassing tank (22); A first water inlet is arranged above the low-position degassing tank (21), a first exhaust port is arranged on the top of the low-position degassing tank (21), a circulation outlet is arranged below the low-position degassing tank (21), and a first water outlet is arranged at the bottom of the low-position degassing tank (21); A second water inlet is arranged above the high-position degassing tank (22), a second exhaust port is arranged on the top of the high-position degassing tank (22), a circulation inlet is arranged below the high-position degassing tank (22), a second water outlet is arranged at the bottom of the high-position degassing tank (22), and an air inlet is arranged on the high-position degassing tank (22); The first water outlet is in communication with the second water inlet; A communication pipeline is arranged between the circulation inlet and the circulation outlet, and a circulating pump (1) is fixedly installed on the communication pipeline; A spraying device (4) is further arranged at the first water inlet; An air charging device (5) is further fixedly installed at the air inlet of the high-position degassing tank (22).

2. The vacuum deoxidizing system according to claim 1, characterized by: A first exhaust port is arranged on the top of the low-position degassing tank (21), and a second exhaust port is arranged on the top of the high-position degassing tank (22); First and second suction ports are arranged on the vacuum pump (3); A first exhaust pipeline is arranged between the first suction port and the first exhaust port, and a second exhaust pipeline is arranged between the second suction port and the second exhaust port.

3. The vacuum deoxidizing system according to claim 2, characterized in that: A gas storage device (6) is further arranged at intervals with the low-position degassing tank (21); The air charging device (5) comprises an air inlet pipe (51), a nozzle (52) and a diffuser (53), the nozzle (52) and the gas storage device (6) are in communication through the air inlet pipe (51), the air inlet pipe (51) is threadedly connected with the nozzle (52), and the diffuser (53) is detachably installed on the nozzle (52).

4. The vacuum deoxidizing system according to claim 1, characterized by: A discharging pump (7) is arranged on the second water outlet.

5. The vacuum deoxidizing system according to claim 1, characterized by: A liquid level detection device and a pressure detection device are further arranged, and a plurality of liquid level detection devices and a plurality of pressure detection devices are arranged in the two-stage deoxidizing device (2).

6. The vacuum deoxidizing system according to claim 5, wherein: A control device (8) is further arranged, a touch screen is arranged above the control device (8), and the control device (8) is electrically connected with the plurality of liquid level detection devices and the plurality of pressure detection devices through wires.

7. The vacuum deoxidizing system of claim 1, wherein: An observation bench (9) is further arranged, and the observation bench (9) comprises an observation bench and a staircase, a first handrail is arranged on the observation bench, and a second handrail is arranged on the staircase.

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