Indirect cooling system for polluted water of spray tower

Abstract

The utility model discloses a spray tower polluted water indirect cooling system in the polluted water cooling field, comprising a spray tower comprising a spray tower body which is provided with a waste gas inlet, a waste gas outlet, a polluted water outlet and a plurality of polluted water inlets; the heat exchanger comprises a hot water inlet, a hot water outlet, a cold water inlet and a cold water outlet; the cooling tower comprises a cooling tower body, and a cooling water inlet and a cooling water outlet are formed in the cooling tower body; the circulating pipeline comprises a hot water outlet pipe, a hot water inlet pipe, a cold water inlet pipe and a cold water outlet pipe; the hot water outlet pipe and the hot water inlet pipe form a first cycle with the polluted water outlet and the plurality of polluted water inlets through the spraying water pump, and the cold water inlet and the cold water outlet form a second cycle with the cooling water inlet and the cooling water outlet through the circulating water pump. According to the utility model, the heat exchanger is additionally arranged, so that high-temperature circulating water in the spray tower does not directly enter the cooling tower, and the purpose of cooling can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polluted water cooling, and particularly relates to an indirect cooling system for polluted water in a spray tower. Background Art

[0002] In the existing motor production process, in order to ensure the insulation performance of the motor, after the winding is wound, the rotor or stator needs to be sprayed or immersed in insulating paint, and then a drying process is carried out. The exhaust gas generated during drying contains a large amount of volatile organic compounds and moisture. The spray tower, as a common exhaust gas treatment equipment, can also be called a washing tower, a water washing tower, or a purification tower. It is a commonly used equipment in a gas-liquid reaction system. The exhaust gas contacts the liquid in reverse, and the gas is purified, dust-removed, and cooled after washing.

[0003] During the use of the spray tower, high-temperature exhaust gas passes through the spray tower for a long time. While the water in the spray tower absorbs heat from the gas, its own temperature rises and covers the pollutants. At this time, the polluted water contains harmful gases. If it is directly connected to a cooling tower for cooling, it is easy to cause secondary pollution. Therefore, how to efficiently cool down the polluted water in the spray tower has become an urgent problem to be solved. Utility Model Content

[0004] The utility model aims to provide an indirect cooling system for polluted water in a spray tower, which can efficiently cool the polluted water in the spray tower.

[0005] The purpose of the utility model is achieved as follows: a spray tower polluted water indirect cooling system, comprising: a spray tower, comprising a spray tower body, the spray tower body is provided with an exhaust gas inlet, an exhaust gas outlet, a polluted water outlet and a plurality of polluted water inlets; a heat exchanger, comprising a hot water inlet, a hot water outlet, a cold water inlet and a cold water outlet; a cooling tower, comprising a cooling tower body, the cooling tower body is provided with a cooling water inlet and a cooling water outlet; a circulating pipeline, comprising a hot water outlet pipe, a hot water inlet pipe, a cold water inlet pipe and a cold ... Water outlet pipe; one end of the hot water outlet pipe is connected to the contaminated water outlet, and the other end is connected to the water inlet of the spray water pump, the water outlet of the spray water pump is connected to the hot water inlet, one end of the hot water inlet pipe is connected to the hot water outlet, and the other end is respectively connected to several contaminated water inlets, one end of the cold water inlet pipe is connected to the cooling water outlet, and the other end is connected to the cold water inlet, one end of the cold water outlet pipe is connected to the cooling water inlet, and the other end is connected to the water outlet of the circulating water pump, and the water inlet of the circulating water pump is connected to the cold water outlet.

[0006] When the utility model is used, the spray water pump and the circulating water pump are started, and the high-temperature polluted water in the spray tower passes through the polluted water outlet, the spray water pump, and the hot water outlet pipe in sequence, and then enters the heat exchanger to exchange energy with the cooling water. The polluted water after cooling passes through the hot water inlet pipe and the polluted water inlet in sequence, exchanges energy with the exhaust gas and thus becomes high-temperature polluted water again. This is the first cycle; at the same time, the cooling water in the cooling tower passes through the cooling water outlet, the cold water inlet pipe, and the cold water inlet in sequence, and then enters the heat exchanger to exchange energy with the polluted water. The cooling water after heating passes through the cold water outlet, the circulating water pump, the cold water outlet pipe, and the cooling water inlet in sequence, and then enters the cooling tower to reduce the temperature of the coolant. This is the second cycle. Compared with the prior art, the beneficial effects of the utility model are: the polluted water circulating in the spray tower exchanges energy with the cooling water circulating in the cooling tower through the heat exchanger, and the high-temperature polluted water in the spray tower can achieve the purpose of cooling by passing through the heat exchanger without directly entering the cooling tower. The water in the spray tower and the cooling tower are both independently circulated. The whole process does not generate secondary pollution or wastewater, and is safe and effective.

[0007] As a further improvement of the utility model, the spray tower body is provided with a first partition, a second partition and a third partition in sequence from bottom to top, the upper sides of the first partition, the second partition and the third partition are provided with a packing layer, the lower sides of the second partition and the third partition are provided with a spray device, the spray device includes a spray pipe, and a plurality of spray heads are evenly spaced on the spray pipe and are connected to the corresponding contaminated water inlets.

[0008] As a further improvement of the utility model, the exhaust gas inlet is located below the first partition plate, and the exhaust gas outlet is located at the top of the spray tower body.

[0009] As a further improvement of the utility model, a water collecting tank, a supporting layer, a packing layer, a plurality of spray heads and a fan are sequentially arranged in the cooling tower body from bottom to top. The plurality of spray heads are connected to the cooling water inlet through a water distribution pipe, and the bottom of the water collecting tank is connected to the cooling water outlet.

[0010] As a further improvement of the utility model, a plurality of the spray heads are evenly distributed above the filler layer at equal intervals.

[0011] As a further improvement of the utility model, a water remover is provided between the fan and the spray head. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the circulation pipeline of the utility model.

[0014] Among them, 1 spray tower body, 101 exhaust gas inlet, 102 exhaust gas outlet, 103 polluted water outlet, 104 polluted water inlet, 2 heat exchanger, 201 hot water inlet, 202 hot water outlet, 203 cold water inlet, 204 cold water outlet, 3 cooling tower body, 301 cooling water inlet, 302 cooling water outlet, 4 circulating pipe, 401 hot water outlet pipe, 402 hot water inlet pipe, 403 cold water inlet pipe, 404 cold water outlet pipe, 5 spray water pump, 6 circulating water pump, 7 first partition, 8 second partition, 9 third partition, 10 first packing layer, 11 second packing layer, 12 third packing layer, 13 spray head, 14 collecting tank, 15 fourth packing layer, 16 spray head, 17 fan. DETAILED DESCRIPTION

[0015] like Figure 1 and 2 As shown, a spray tower polluted water indirect cooling system comprises: a spray tower, comprising a spray tower body 1, on which a waste gas inlet 101, a waste gas outlet 102, a polluted water outlet 103 and two polluted water inlets 104 are arranged; a heat exchanger 2, preferably a plate heat exchanger 2 comprising a hot water inlet 201, a hot water outlet 202, a cold water inlet 203 and a cold water outlet 204; a cooling tower, comprising a cooling tower body 3, on which a cooling water inlet 301 and a cooling water outlet 302 are arranged; a circulation pipeline 4, comprising a hot water outlet pipe 401, a hot water inlet pipe 402, a cold water inlet pipe 403 and a cold water outlet 204. 3 and the cold water outlet pipe 404; one end of the hot water outlet pipe 401 is connected to the polluted water outlet 103, and the other end is connected to the water inlet end of the spray water pump 5, the water outlet end of the spray water pump 5 is connected to the hot water inlet 201, one end of the hot water inlet pipe 402 is connected to the hot water outlet 202, and the other end is respectively connected to the two polluted water inlets 104, one end of the cold water inlet pipe 403 is connected to the cooling water outlet 302, and the other end is connected to the cold water inlet 203, one end of the cold water outlet pipe 404 is connected to the cooling water inlet 301, and the other end is connected to the water outlet end of the circulating water pump 6, and the water inlet end of the circulating water pump 6 is connected to the cold water outlet 204.

[0016] In this embodiment, the first partition plate 7, the second partition plate 8 and the third partition plate 9 are sequentially arranged from bottom to top in the spray tower body 1, the first partition plate 7, the second partition plate 8 and the third partition plate 9 are respectively provided with a first filler layer 10, a second filler layer 11 and a third filler layer 12 on the upper side, and the second partition plate 8 and the third partition plate 9 are provided with a spray device on the lower side. The spray device includes a spray pipe, and a plurality of spray heads 13 are evenly spaced on the spray pipe and are connected to the corresponding contaminated water inlet 104; the exhaust gas inlet 101 is located below the first partition plate 7, and the exhaust gas outlet 102 is located at the top of the spray tower body 1.

[0017] In this embodiment, a water collecting tank 14, a supporting layer, a fourth packing layer 15, a plurality of spray heads 16 and a fan 17 are sequentially arranged in the cooling tower body 3 from bottom to top. The plurality of spray heads 16 are connected to the cooling water inlet 301 through a water distribution pipe, and the bottom of the water collecting tank 14 is connected to the cooling water outlet 302; the plurality of spray heads 16 are evenly distributed above the packing layer at equal intervals; and a dewatering device is arranged between the fan 17 and the spray head 16.

[0018] When the utility model is in use, when the waste gas enters the spray tower from the waste gas inlet 101, it first passes through the first packing layer 10, and the pollutants in the waste gas come into contact with the packing, so that part of the pollutants are adsorbed and removed by the purification liquid; the pollutants that are not removed will continue to rise with the waste gas and enter the first spray area; the spray head 13 sprays water evenly on the waste gas to cool the waste gas for the first time; after the first cooling, the waste gas continues to rise, and then enters the second spray area after passing through the second packing layer 11, and cools the waste gas for the second time. After the second cooling, the waste gas continues to rise and passes through the third packing layer 12 and is discharged from the waste gas outlet 102; at the same time, the cooling water is circulated The circulating water pump 6 presses the cooling water into the water distribution pipe of the cooling tower, and the cooling water is evenly sprinkled on the filler with the help of the spray head 16 to form a water film. At the same time, the dry air entering from the bottom of the ventilation tower undergoes heat exchange and evaporates into the air and takes away the heat. The cooling water drips into the bottom water collection tank 14 and continues to be recycled. As the air humidity increases, when the air on the water vapor contact surface reaches saturation, the water molecules cannot evaporate. The humid hot air can be sent to high altitudes through the fan 17 to prevent backflow. At the same time, dry air is continuously inhaled from the bottom of the cooling tower to provide a constant dry air flow. The water eliminator can separate the water droplets carried in the discharged humid hot air from the air to reduce water loss.

[0019] The advantages of the utility model are: by arranging multiple layers of fillers and spraying areas in the spray tower, the exhaust gas can be absorbed and filtered. After several layers of treatment, the purpose of exhaust gas washing can be achieved, and it can also play a good cooling effect; the plate heat exchanger 2 ensures the efficiency of the exchanger to be above 80% through reasonable internal control of the water flow. It adopts a 304 plate structure with reasonable layout, so that the water in the spray tower and the water in the cooling tower are fully in contact for energy replacement. The plate heat exchanger 2 is arranged to be detachable for convenient regular cleaning; the cooling tower is a device that uses water as a circulating coolant, absorbs heat from the circulating water in the spray tower and discharges it into the atmosphere, thereby reducing the temperature. The whole process does not generate secondary pollution and is safe and effective.

[0020] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A spray tower polluted water indirect cooling system, characterized in that: include: The spray tower comprises a spray tower body, wherein the spray tower body is provided with an exhaust gas inlet, an exhaust gas outlet, a polluted water outlet and a plurality of polluted water inlets; A heat exchanger, comprising a hot water inlet, a hot water outlet, a cold water inlet and a cold water outlet; A cooling tower, comprising a cooling tower body, wherein the cooling tower body is provided with a cooling water inlet and a cooling water outlet; Circulation pipes, including a hot water outlet pipe, a hot water inlet pipe, a cold water inlet pipe and a cold water outlet pipe; One end of the hot water outlet pipe is connected to the contaminated water outlet, and the other end is connected to the water inlet of the spray water pump. The water outlet of the spray water pump is connected to the hot water inlet. One end of the hot water inlet pipe is connected to the hot water outlet, and the other end is connected to several contaminated water inlets respectively. One end of the cold water inlet pipe is connected to the cooling water outlet, and the other end is connected to the cold water inlet. One end of the cold water outlet pipe is connected to the cooling water inlet, and the other end is connected to the water outlet of the circulating water pump. The water inlet of the circulating water pump is connected to the cold water outlet.

2. The indirect cooling system for polluted water in a spray tower according to claim 1, characterized in that: The spray tower body is provided with a first partition, a second partition and a third partition in sequence from bottom to top, the upper sides of the first partition, the second partition and the third partition are provided with a packing layer, the lower sides of the second partition and the third partition are provided with a spray device, the spray device includes a spray pipe, a plurality of spray heads are evenly spaced on the spray pipe and are connected to the corresponding contaminated water inlets.

3. The indirect cooling system for polluted water in a spray tower according to claim 2, characterized in that: The waste gas inlet is located below the first partition plate, and the waste gas outlet is located at the top of the spray tower body.

4. The indirect cooling system for polluted water in a spray tower according to claim 1, characterized in that: The cooling tower body is provided with a water collecting tank, a supporting layer, a packing layer, a plurality of spray heads and a fan in sequence from bottom to top. The plurality of spray heads are connected to the cooling water inlet through a water distribution pipe, and the bottom of the water collecting tank is connected to the cooling water outlet.

5. The indirect cooling system for polluted water in a spray tower according to claim 4, characterized in that: The plurality of spray heads are evenly distributed above the filler layer at equal intervals.

6. The indirect cooling system for polluted water in a spray tower according to claim 4, characterized in that: A dewatering device is arranged between the fan and the spraying head.

Images