Cooling device for viscose defoaming circulating water

Abstract

The application relates to a viscose fiber processing technology, in particular to a cooling device for viscose defoaming circulating water. The device comprises a steam spraying device, a cooling tower, a defoaming circulating water bucket, a defoaming water circulating pump, a heat exchange plate frame and a refrigerator. The steam spraying device is connected with the defoaming bucket. The steam spraying device is connected with the cooling tower and the defoaming circulating water bucket through a first circulating water pipe and a second circulating water pipe respectively. The cooling tower is connected with the defoaming circulating water bucket through a third circulating water pipe. The defoaming circulating water bucket is connected with the defoaming water circulating pump. The defoaming water circulating pump is connected with the first input end of the heat exchange plate frame. The refrigerator is connected with the second input end of the heat exchange plate frame. The first output end of the heat exchange plate frame is connected with the steam spraying device through a sixth circulating water pipe. The steam spraying device is located at a high position. The defoaming circulating water bucket is located at a low position. The cooling tower is located at an intermediate position. The cooling device for viscose defoaming circulating water can improve the defoaming cooling circulating cooling effect and stability, so as to meet the needs of viscose fiber production.

Description

Technical Field

[0001] This application relates to viscose fiber processing technology, and in particular to a cooling device for viscose degassing circulating water. Background Technology

[0002] In adhesive production, most processes utilize chilled water supplied by compressors or cooling tower systems to cool the deaeration circulating water. For example, CN203798195U discloses a device for treating deaeration circulating water using a cooling tower system. This device absorbs heat from the circulating system through water evaporation and releases it into the atmosphere, achieving cooling through the interaction of external air and water evaporation to reach the required production temperature. This addresses the issues of high energy consumption and manufacturing costs associated with traditional electric cooling methods. However, this method is significantly affected by seasons and temperatures. In summer, due to higher outdoor temperatures, the cooling effect of the cooling tower is poor, resulting in large temperature fluctuations and unstable deaeration performance during continuous deaeration operation.

[0003] During the degassing process of adhesives, a large amount of waste gas such as hydrogen sulfide is generated. When the degassing water is recycled, it carries away the waste gas such as hydrogen sulfide from the adhesive. Over time, this accumulation causes the water in the degassing circulating water tank to become acidic. If not treated, this can easily cause environmental pollution.

[0004] Therefore, it has become an urgent task to provide a cooling and cooling device for viscose defoaming circulating water that has low energy consumption, ensures the cooling effect of the cooling tower, and avoids environmental pollution caused by the acidity of the defoaming circulating water. Summary of the Invention

[0005] In view of this, this application provides a cooling and temperature reduction device for viscose degassing circulating water, which can improve the degassing cooling and temperature reduction effect and stability to meet the needs of viscose fiber production.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] A cooling and temperature reduction device for adhesive degassing circulating water, characterized in that it includes a steam spray device, a cooling tower, a degassing circulating water tank, a degassing water circulating pump, a heat exchange plate and frame, and a chiller;

[0008] The steam spraying device is connected to the deaeration tank, creating a negative pressure environment inside the deaeration tank; the outlet of the steam spraying device is connected to the cooling tower and the deaeration circulating water tank respectively through the first circulating water pipe and the second circulating water pipe, so that the circulating water in the steam spraying device flows into the cooling tower and the deaeration circulating water tank respectively through the first circulating water pipe and the second circulating water pipe.

[0009] The outlet of the cooling tower is connected to the deaeration circulating water tank through the third circulating water pipe, so that the circulating water in the cooling tower flows into the deaeration circulating water tank through the third circulating water pipe.

[0010] The outlet of the defoaming circulating water tank is connected to the defoaming water circulating pump via the fourth circulating water pipe. The defoaming water circulating pump is connected to the first input end of the heat exchange plate frame via the fifth circulating water pipe. The chiller is connected to the second input end of the heat exchange plate frame via the first cooling water pipe to provide cold water. A first valve is installed on the first cooling water pipe to adjust the opening of the pipe. The first output end of the heat exchange plate frame is connected to the steam spraying device via a branch of the sixth circulating water pipe, so that the cooled circulating water flows into the steam spraying device. The second output end of the heat exchange plate frame is connected to the chiller via the second cooling water pipe, so that the cooling water flows back to the chiller.

[0011] The cooling tower is equipped with a fan for air cooling. The steam spraying device is located at a high position, the deaeration circulating water tank is located at a low position, and the cooling tower is located in the middle. The circulating water in the steam spraying device flows into the deaeration circulating water tank through the second circulating water pipe under the action of gravity, and then flows into the cooling tower through the first circulating water pipe. The cooled circulating water automatically flows into the deaeration circulating water tank under the action of gravity. A second valve is installed on the first circulating water pipe for opening and closing the pipe or adjusting the opening of the pipe.

[0012] The cooling and temperature reduction device for the adhesive degassing circulating water described in this application controls the cooling tower inlet water flow and the on / off state of the pipeline via a second valve on the first circulating water pipe. During seasons with higher temperatures, a combination of heat exchanger plate and frame cooling water heat exchange and cooling tower air cooling is employed to ensure a stable degassing circulating water temperature. During seasons with lower temperatures, the second valve is closed, allowing the heat exchanger plate and frame to operate independently, ensuring stable operation of the degassing system while also saving energy. Furthermore, the first valve on the first cooling water pipe precisely controls the chilled water flow rate, thereby controlling the heat exchange effect of the heat exchanger plate and frame, resulting in more precise and stable temperature adjustment of the degassing circulating water.

[0013] Furthermore, the cooling tower of this application is located in the middle and uses gravity flow to allow the circulating water after passing through the steam spray device to flow into the cooling tower. After being cooled by air, the water flows out of the cooling tower by gravity. This helps to reduce the equipment investment cost from the cooling tower to the steam spray device pump and also helps to save electricity.

[0014] In some embodiments, the cooling device further includes a water ring vacuum pump for providing negative pressure to the degassing tank, the water ring vacuum pump being connected to the outlet of the steam spraying device via a first suction pipe.

[0015] The third cooling water pipe is connected to the water ring vacuum pump to provide sealing water. The water ring vacuum pump is also connected to the deaeration circulating water tank via a sealing water return pipe, allowing the sealing water in the water ring vacuum pump to flow back to the deaeration circulating water tank. This third cooling water pipe is a branch pipe for the deaeration circulating water after cooling by the heat exchange plate frame. A fire water pipe is also connected to the water ring vacuum pump to provide backup water. The fact that both the sealing water and the deaeration cooling water from the water ring vacuum pump are recycled back to the deaeration circulating water tank helps save water consumption and improve the deaeration effect.

[0016] In some embodiments, the defoaming circulating water tank is also connected to an alkali replenishment pipe, which is equipped with a third valve and is used to replenish alkali to the defoaming circulating water tank.

[0017] During the recycling process, defoaming water carries away waste gases such as hydrogen sulfide from the adhesive. Over time, this accumulation causes the water in the defoaming circulating water tank to become acidic, easily leading to environmental pollution. By adding an alkali replenishment pipe to the circulating water tank and periodically opening a third valve, the pH of the defoaming water is ensured to be slightly acidic, guaranteeing the continuous and stable operation of the defoaming water circulating cooling device, reducing waste gas pollution, and improving the workshop environment.

[0018] In some embodiments, the cooling tower includes a tower body, within which a water distribution component for spraying water is provided. The water distribution component is connected to a first circulating water pipe. A fan is installed inside the tower body and above the water distribution component. The tower body also includes a water collector for collecting water, a packing chamber located below the water collector, and a water collection tray located below the packing chamber. The water collection tray is connected to a third circulating water pipe. The packing chamber is filled with packing material. An air inlet is also provided on the tower body.

[0019] During operation, the deaeration circulating water is sprayed out from the water distribution component by gravity. The fan rotates to generate cooling air, which cools the deaeration circulating water. The water flow is collected by the water collector and flows downward into the packing. The packing increases the contact area and residence time of the water flow, thereby improving the cooling effect. Finally, the water converges in the water collection pan and flows into the deaeration circulating water tank through the third circulating water pipe.

[0020] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0021] 1. This application adopts a combination of heat exchange plate and frame heat exchange and cooling tower air cooling to provide a more stable cooling effect for deaeration circulating water, so that the deaeration system can meet the needs of continuous high-capacity viscose fiber production.

[0022] 2. This application rationally selects the installation location of the cooling tower, allowing circulating water to enter the cooling tower system and the deaerator water circulation tank separately by gravity flow, and the selection and flow rate are adjusted by switching via a second valve. Flexible adjustment of the water volume entering the cooling tower under different seasons or temperature conditions is beneficial for energy conservation and consumption reduction.

[0023] 3. This application adds an alkali replenishment pipe and a third valve to the circulating water tank to replenish alkali regularly, preventing the escape of waste gas from the degassing circulating water, reducing waste gas pollution, and improving the workshop environment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the cooling tower structure in an embodiment of this application.

[0026] Labeling Explanation: 1. Steam spray device; 2. Cooling tower; 21. Tower body; 22. Water distribution components; 23. Fan; 24. Water collector; 25. Packing chamber; 26. Water collection tray; 27. Air inlet; 3. Deaeration circulating water tank; 4. Deaeration water circulating pump; 5. Heat exchange plate frame; 6. Refrigeration unit; 7. Water ring vacuum pump; 8. Deaeration tank; 91. First circulating water pipe; 92. Second circulating water pipe; 93. Third circulating water pipe; 94. Fourth circulating water pipe; 95. Fifth circulating water pipe; 96. Sixth circulating water pipe; 101. First cooling water pipe; 102. Second cooling water pipe; 103. Third cooling water pipe; 104. Sealing water return pipe; 105. First exhaust pipe; 106. First valve; 107. Second valve; 108. Alkali replenishment pipe; 109. Third valve; 110. Fire water pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0028] See Figures 1 to 2 This application provides a cooling and temperature reduction device for adhesive degassing circulating water, including a steam spray device 1, a cooling tower 2, a degassing circulating water tank 3, a degassing water circulating pump 4, a heat exchange plate frame 5, and a chiller 6.

[0029] The steam spray device 1 is connected to the deaeration tank 8, so that a negative pressure environment is formed inside the deaeration tank 8; the outlet of the steam spray device 1 is connected to the cooling tower 2 and the deaeration circulating water tank 3 through the first circulating water pipe 91 and the second circulating water pipe 92 respectively, so that the circulating water in the steam spray device 1 flows into the cooling tower 2 and the deaeration circulating water tank 3 through the first circulating water pipe 91 and the second circulating water pipe 92 respectively.

[0030] The outlet of the cooling tower 2 is connected to the deaeration circulating water tank 3 through the third circulating water pipe 93, so that the circulating water in the cooling tower 2 flows into the deaeration circulating water tank 3 through the third circulating water pipe 93.

[0031] The outlet of the defoaming circulating water tank 3 is connected to the defoaming water circulating pump 4 via the fourth circulating water pipe 94. The defoaming water circulating pump 4 is connected to the first input end of the heat exchange plate frame 5 via the fifth circulating water pipe 95. The chiller 6 is connected to the second input end of the heat exchange plate frame 5 via the first cooling water pipe 101 to provide cold water. The first cooling water pipe 101 is equipped with a first valve 106 for adjusting the opening of the pipe. The first output end of the heat exchange plate frame 5 is connected to the steam spray device 1 via a branch pipe of the sixth circulating water pipe 96, so that the cooled circulating water flows into the steam spray device 1. The second output end of the heat exchange plate frame 5 is connected to the chiller 6 via the second cooling water pipe 102 to return the cooling water to the chiller 6.

[0032] The cooling tower 2 is equipped with a fan 23 for air cooling. The steam spray device 1 is located at a high position, the deaeration circulating water tank 3 is located at a low position, and the cooling tower 2 is located in the middle. The circulating water in the steam spray device 1 flows into the deaeration circulating water tank 3 through the second circulating water pipe 92 under the action of gravity, and flows into the cooling tower 2 through the first circulating water pipe 91. The cooled circulating water automatically flows into the deaeration circulating water tank 3 under the action of gravity. The first circulating water pipe 91 is equipped with a second valve 107 for opening and closing the pipe or adjusting the opening of the pipe.

[0033] The cooling and temperature reduction device for the adhesive degassing circulating water can control the water inlet flow of the cooling tower 2 and the on / off state of the pipeline via the second valve 107 on the first circulating water pipe 91. During seasons with higher temperatures, a combination of cooling water heat exchange in the heat exchange plate and frame 5 and air cooling in the cooling tower 2 is used to ensure a stable degassing circulating water temperature. During seasons with lower temperatures, the second valve 107 is closed, allowing the heat exchange plate and frame 5 to operate independently, ensuring stable operation of the degassing system while also saving energy. Furthermore, the first valve 106 on the first cooling water pipe 101 can precisely control the chilled water flow rate to regulate the heat exchange effect of the heat exchange plate and frame 5, resulting in more precise and stable temperature adjustment of the degassing circulating water.

[0034] Furthermore, the cooling tower 2 of this application is located in the middle and uses gravity flow to allow the circulating water after passing through the steam spray device 1 to flow into the cooling tower 2. After being cooled by air, the water flows out of the cooling tower 2 by gravity. This helps to reduce the equipment investment cost of the pump from the cooling tower 2 to the steam spray device 1 and also helps to save electricity.

[0035] The cooling device also includes a water ring vacuum pump 7 for providing negative pressure to the degassing tank 8, the water ring vacuum pump 7 being connected to the outlet of the steam spraying device 1 via a first suction pipe 105.

[0036] The third cooling water pipe 103 is connected to the water ring vacuum pump 7 and is used to supply sealing water to the water ring vacuum pump 7. The water ring vacuum pump 7 is also connected to the deaeration circulating water tank 3 through the sealing water return pipe 104, which is used to return the sealing water in the water ring vacuum pump 7 to the deaeration circulating water tank 3. The third cooling water pipe 103 is a branch pipe of the deaeration circulating water after the heat exchange plate frame 5 is cooled. The fire water pipe 110 is also connected to the water ring vacuum pump 7 to provide backup water so that the sealing water in the third cooling water pipe 103 can be replenished in time if the flow is interrupted due to equipment failure.

[0037] The sealing water and deaeration cooling water of the water ring vacuum pump 7 are both recycled into the deaeration water circulation tank, which helps to save water consumption and improve the deaeration effect.

[0038] The defoaming circulating water tank 3 is also connected to the alkali replenishment pipe 108, which is equipped with a third valve 109. The alkali replenishment pipe 108 is used to replenish alkali to the defoaming circulating water tank 3.

[0039] During the recycling process, the defoaming water carries away waste gases such as hydrogen sulfide from the adhesive. Long-term accumulation causes the water in the defoaming circulating water tank 3 to become acidic, easily leading to environmental pollution. By adding an alkali replenishment pipe 108 to the circulating water tank and periodically opening the third valve 109, the pH of the defoaming water is ensured to be slightly acidic, guaranteeing the continuous and stable operation of the defoaming water circulating cooling device, reducing waste gas pollution, and improving the workshop environment.

[0040] The cooling tower 2 includes a tower body 21, inside which a water distribution component 22 for spraying water is provided. The water distribution component 22 is connected to a first circulating water pipe 91. A fan 23 is installed inside the tower body 21 and above the water distribution component 22. The tower body 21 also includes a water collector 24 for collecting water, a packing chamber 25 located below the water collector 24, and a water collection tray 26 located below the packing chamber 25. The water collection tray 26 is connected to a third circulating water pipe 93. The packing chamber 25 is filled with packing material. An air inlet 27 is also provided on the tower body 21.

[0041] During operation, the deaeration circulating water is sprayed out from the water distribution component 22 by gravity. The fan 23 rotates to generate cooling air, which cools the deaeration circulating water. The water flow is collected by the water collector 24 and flows downward into the packing. The packing increases the contact area and residence time of the water flow, thereby improving the cooling effect. Finally, the water flows into the deaeration circulating water tank 3 through the third circulating water pipe 93 after converging in the water collection pan 26.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cooling and temperature reduction device for circulating water for adhesive degassing, characterized in that: It includes a steam spray device (1), a cooling tower (2), a defoaming circulating water tank (3), a defoaming water circulating pump (4), a heat exchange plate and frame (5), and a chiller (6); The steam spray device (1) is connected to the deaerator (8) to create a negative pressure environment inside the deaerator (8); the outlet of the steam spray device (1) is connected to the cooling tower (2) and the deaerator circulating water tank (3) through the first circulating water pipe (91) and the second circulating water pipe (92) respectively, so that the circulating water in the steam spray device (1) flows into the cooling tower (2) and the deaerator circulating water tank (3) through the first circulating water pipe (91) and the second circulating water pipe (92) respectively. The outlet of the cooling tower (2) is connected to the deaeration circulating water tank (3) through the third circulating water pipe (93), so that the circulating water in the cooling tower (2) flows into the deaeration circulating water tank (3) through the third circulating water pipe (93); The outlet of the defoaming circulating water tank (3) is connected to the defoaming water circulating pump (4) through the fourth circulating water pipe (94). The defoaming water circulating pump (4) is connected to the first input end of the heat exchange plate frame (5) through the fifth circulating water pipe (95). The chiller (6) is connected to the second input end of the heat exchange plate frame (5) through the first cooling water pipe (101) to provide cold water. The first cooling water pipe (101) is equipped with a first valve (106) for adjusting the opening of the pipe. The first output end of the heat exchange plate frame (5) is connected to the steam spray device (1) through a branch pipe of the sixth circulating water pipe (96) so that the cooled circulating water flows into the steam spray device (1). The second output end of the heat exchange plate frame (5) is connected to the chiller (6) through the second cooling water pipe (102) so that the cooling water flows back to the chiller (6). The cooling tower (2) is equipped with a fan (23) for air cooling. The steam spray device (1) is located at a high position, the deaeration circulating water tank (3) is located at a low position, and the cooling tower (2) is located in the middle. The circulating water in the steam spray device (1) flows into the deaeration circulating water tank (3) through the second circulating water pipe (92) under the action of gravity, and flows into the cooling tower (2) through the first circulating water pipe (91). The cooled circulating water automatically flows into the deaeration circulating water tank (3) under the action of gravity. The first circulating water pipe (91) is equipped with a second valve (107) for opening and closing the pipe or adjusting the opening of the pipe.

2. The cooling and temperature reduction device for adhesive defoaming circulating water according to claim 1, characterized in that: The cooling device also includes a water ring vacuum pump (7) for providing negative pressure to the degassing tank (8), the water ring vacuum pump (7) being connected to the outlet of the steam spraying device (1) via a first suction pipe (105); The third cooling water pipe (103) is connected to the water ring vacuum pump (7) to provide sealing water to the water ring vacuum pump (7). The water ring vacuum pump (7) is also connected to the deaeration circulating water tank (3) through the sealing water return pipe (104) to return the sealing water in the water ring vacuum pump (7) to the deaeration circulating water tank (3). The third cooling water pipe (103) is a branch pipe of the deaeration circulating water after the heat exchange plate frame (5) is cooled. The fire water pipe (110) is also connected to the water ring vacuum pump (7) to provide backup water.

3. The cooling and temperature reduction device for adhesive defoaming circulating water according to claim 1, characterized in that: The defoaming circulating water tank (3) is also connected to the alkali replenishment pipe (108), and the alkali replenishment pipe (108) is also equipped with a third valve (109). The alkali replenishment pipe (108) is used to replenish alkali to the defoaming circulating water tank (3).

4. The cooling and temperature reduction device for adhesive defoaming circulating water according to claim 1, characterized in that: The cooling tower (2) includes a tower body (21), a water distribution component (22) for spraying water is provided inside the tower body (21), the water distribution component (22) is connected to the first circulating water pipe (91), the fan (23) is installed inside the tower body (21) and above the water distribution component (22), the tower body (21) is also provided with a water collector (24) for collecting water, a packing chamber (25) located below the water collector (24) and a water collection tray (26) located below the packing chamber (25), the water collection tray (26) is connected to the third circulating water pipe (93), the packing chamber (25) is provided with packing, and the tower body (21) is also provided with an air inlet (27).

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