Method and device for improving waste heat power generation cooling effect

Abstract

The method for improving the waste heat power generation cooling effect solves the problem that the waste heat power generation cooling effect is poor and comprises the steps that S1, a cooling tower is arranged according to the requirement for liquid flow, and a draught fan is arranged on the upper portion of the cooling tower; s2, spraying heat circulation liquid in the cooling tower; s3, an S-wave type filler is arranged in the cooling tower; s4, an air inlet is formed in the cooling tower; and S5, cold circulation liquid is collected at the bottom of the cooling tower. The invention further provides a device for improving the waste heat power generation cooling effect, the device comprises a cooling tower, a draught fan, the S-wave-shaped filler, an air inlet and a nozzle, a bent through hole is formed in the S-wave-shaped filler, the through hole penetrates through the upper end and the lower end of the S-wave-shaped filler, and due to the fact that sprayed heat circulation liquid stays on the surface of the S-wave-shaped filler, the heat circulation liquid is sprayed out. In this way, the collecting area of the cooling tower collects the cold circulation liquid, the cold circulation liquid flows back to the waste heat power generation system, and therefore the problem that the waste heat power generation cooling effect is poor is solved.

Description

Technical Field

[0001] The invention relates to the metallurgical industry, and in particular to a method and a device for improving the cooling effect of waste heat power generation. Background Art

[0002] In the existing waste heat power generation, during the high temperature season, the cooling circulating water supply temperature of the condenser (heat exchanger) is high, reaching about 36.6°C, the condenser vacuum is as low as -86.5KPa, and the condenser terminal difference reaches about 10°C, affecting the thermal efficiency and economic operation of the turbine.

[0003] The power station adopts waste heat power generation, mainly using the waste heat flue gas from the sintering ring cooler and the main flue The waste heat boiler is used to exchange heat and generate steam to drive the steam turbine to generate electricity. The cooling tower is adjacent to the sintering belt corridor area. During the convection heat exchange process, sintered ore powder is often brought into the tower by the airflow and accumulates in the packing layer for a long time, seriously affecting the heat exchange efficiency. During the annual overhaul, a thick layer of sludge formed by the accumulation of sintered ore powder was found at the bottom of the cooling tower pool when cleaning it.

[0004] The axial flow fan with the original design water volume cannot effectively dissipate heat during high temperature periods, causing the inlet water temperature to be Drops to the design value, which is another important reason for the low vacuum degree of the condenser in summer. Summary of the invention

[0005] The purpose of the present invention is to provide a method for improving the cooling effect of waste heat power generation, thereby solving the problem of poor cooling effect of waste heat power generation.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a method for improving the cooling effect of waste heat power generation, comprising: S1. A cooling tower is set up according to the needs of liquid flow, and a fan is set up on the top of the cooling tower; S2. Spraying hot circulating liquid in the cooling tower. The hot circulating liquid comes from the waste heat power generation system. A water collector is arranged above the spraying area. The air suction end of the fan is aligned with the air outlet end of the water collector. S3. An S-shaped filler is arranged in the cooling tower, the S-shaped filler is located below the spraying area, and the heat circulation liquid passes through the S-shaped filler; S4. An air inlet is provided on the cooling tower, and the air inlet is located below the S-shaped wave filler; S5. Collect cold circulating liquid at the bottom of the cooling tower, and use the cold circulating liquid to supply waste heat for power generation and heat dissipation.

[0007] Optionally, in S1, a wind duct is provided on the cooling tower, and the fan is located in the wind duct.

[0008] Furthermore, in S1, the air duct is made of glass fiber reinforced plastic, the air duct is a curved body, and the outer wall of the air duct is provided with reinforcing ribs.

[0009] Optionally, in S2, the water collector includes a plurality of water collecting plates, the plurality of water collecting plates are connected together at intervals, and the water collecting plates are bent in different directions for multiple times.

[0010] Optionally, in S2, a plurality of nozzles are arranged in the cooling tower, the nozzles are externally connected to a heat circulating liquid, and the nozzles are used to spray the heat circulating liquid onto the S-shaped filler.

[0011] Optionally, in S3, the surface of the S-shaped filler is uneven, and a plurality of curved through holes are arranged on the S-shaped filler, and the through holes are used for the thermal circulation liquid to flow downward and the gas to flow upward.

[0012] Furthermore, in S3, the outer periphery of the S-shaped filler is in contact with the inner wall of the cooling tower.

[0013] The present invention also provides a device for improving the cooling effect of waste heat power generation, comprising a cooling tower, a fan, an S-shaped filler, an air inlet and a nozzle, characterized in that: The upper part of the cooling tower is connected to a water supply pipe, the bottom part of the cooling tower is connected to a water return pipe, the fan is arranged on the top of the cooling tower, the S-shaped filler is arranged in the middle part of the cooling tower, the S-shaped filler is provided with curved through holes, the through holes penetrate the upper and lower ends of the S-shaped filler, the air inlet is arranged at the lower part of the cooling tower, the air suction end of the fan is aligned with the inside of the cooling tower, the air outlet end of the fan is aligned with the outside of the cooling tower, the nozzle is arranged on the water supply pipe, and the nozzle is located above the S-shaped filler.

[0014] Optionally, a water collector is provided above the nozzle.

[0015] Optionally, the air inlet is located below the S-shaped filler, and an air regulating plate is rotatably provided in the air inlet, and the air regulating plate adjusts its angle with the air inlet direction by rotating.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides a method for improving the cooling effect of waste heat power generation. The heat circulation liquid comes from the waste heat power generation system. Since the sprayed heat circulation liquid stays on the surface of the S-wave filler, the surface of the S-wave filler is uneven, thereby increasing the contact area and contact time between the heat circulation liquid and the gas. Then the heat circulation liquid flows downward to the collection area of ​​the cooling tower. During this process, the fan is turned on, the fan absorbs the gas in the cooling tower, the gas in the cooling tower rises, and the atomized heat circulation liquid falls. The S-wave filler has high thermal conductivity. The atomized heat circulation liquid is mixed with cold air, so that heat exchange is achieved at the S-wave filler. The hot air is discharged to the outside of the cooling tower through the fan. In this way, the collection area of ​​the cooling tower collects the cold circulation liquid, and the cold circulation liquid flows back to the waste heat power generation system, so that the waste heat power generation system is cooled to meet the process requirements, thereby solving the problem of poor cooling effect of waste heat power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 is an external view of a method for improving the cooling effect of waste heat power generation and a device according to an embodiment of the present invention; Figure 2 yes Figure 1 Interior view shown; Figure 3 is an enlarged view of the drift eliminator.

[0018] The reference numerals are described as follows: 1. Cooling tower; 2. Fan; 3. Water collector; 4. S-shaped filler; 5. Air inlet; 6. Air duct; 7. Reinforcing ribs; 8. Water collecting plate; 9. Nozzle; 10. Air regulating plate; 11. Through hole; 12. Gap; 13. Collecting chamber; 14. Water supply pipe; 15. Return pipe. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1 and Figure 2 and Figure 3 As shown, a method for improving the cooling effect of waste heat power generation includes: S1. A cooling tower 1 is set according to the need of liquid flow, and a fan 2 is set on the upper part of the cooling tower 1; the fan 2 is turned on, and the fan 2 absorbs the gas in the cooling tower 1, and the hot gas in the cooling tower 1 is discharged through the fan 2.

[0023] S2. Spray hot circulating liquid in the cooling tower 1. The hot circulating liquid comes from the waste heat power generation system. The cooling tower 1 is connected to the waste heat power generation system. The waste heat power generation system generates heat when generating electricity, and needs to have a coolant circulation to cool down. Otherwise, the waste heat power generation system will produce abnormal conditions. The hot circulating liquid is sprayed downward in an atomized state. A water collector 3 is arranged above the spraying area. Because the fan 2 is absorbing the gas from the cooling tower 1, a small amount of high-temperature atomized hot circulating liquid drifts upward with the gas. In order to reduce the loss of water in the gas, the air intake end of the fan is aligned with the air outlet end of the water collector, so that the gas with the atomized hot circulating liquid will pass through the water collector.

[0024] As more and more atomized hot circulating liquid is added, the gas in the cooling tower 1 is filled with more and more water to form water vapor. When the water vapor passes through the water collector, part of the water in the water vapor stays in the water collector. After the water is blocked in the water collector, cold circulating liquid is formed and the water flows downward from the water collector. The cold circulating liquid is collected at the bottom of the cooling tower 1.

[0025] S3. An S-shaped filler 4 is arranged in the cooling tower 1. The S-shaped filler 4 is located below the spraying area. The atomized heat circulating liquid falls downward onto the S-shaped filler 4. The surface of the S-shaped filler 4 has a curved surface. A plurality of through holes 11 are arranged on the S-shaped filler 4. The plurality of through holes 11 penetrate the upper and lower ends of the S-shaped filler. The heat circulating liquid passes through the S-shaped filler 4. The atomized heat circulating liquid falls onto the surface of the S-shaped filler 4 and accumulates into liquid. The heat circulating liquid flows downward along the through holes 11. The heat circulating liquid will not completely fill the through holes 11, so that gas flows from bottom to top in the through holes 11.

[0026] S4. An air inlet 5 is provided on the wall of the cooling tower 1. The air inlet 5 is located below the S-shaped filler 4. The air inlet 5 is used for gas to enter the cooling tower 1. When the fan 2 is turned on, the fan 2 absorbs hot air from the top of the cooling tower 1 and discharges the hot air. In this way, the gas in the cooling tower 1 flows from top to top. Cold air enters the cooling tower 1 from the air inlet 5. The cold air passes through the through hole 11 upward. In this way, the heat circulating liquid and the cold air realize heat exchange in the through hole 11. After the cold air absorbs heat, hot air is formed and flows upward. The hot air contains moisture. When the hot air passes through the water collector 3, the moisture part of the hot air will stay in the water collector 3. After the moisture is blocked, liquid is formed and finally flows downward to the S-shaped filler 4.

[0027] An air regulating plate 10 is rotatably provided at the air inlet 5. By rotating the air regulating plate 10, the air volume at the air inlet 5 can be adjusted. The rotation angle of the air regulating plate 10 is adjusted according to the cooling requirement of the heat circulation liquid.

[0028] S5. Collect cold circulating liquid at the bottom of the cooling tower 1. The cold circulating liquid is used to supply heat to the waste heat power generation system. The temperature of the cold circulating liquid is low. The cold circulating liquid is connected to the waste heat power generation system through a pipeline. After passing through the waste heat power generation system, the temperature of the cold circulating liquid increases to form a hot circulating liquid, which is then connected to the upper part of the cooling tower 1 through a pipeline.

[0029] In S1, a wind duct 6 is provided on the cooling tower 1, and the fan 2 is located in the wind duct 6. The wind duct 6 guides the hot air discharged by the fan 2 to a higher position, so that the discharged hot air rises to a higher position, which has a protective effect on the environment.

[0030] In S1, the wind duct 6 is made of fiberglass, the wind duct 6 has a curved surface, and the outer wall of the wind duct 6 is provided with reinforcing ribs 7. The wind duct 6 made of fiberglass has the advantages of light weight, corrosion resistance, and good thermal performance. The light weight is suitable for the wind duct 6 to be set at the top, so that the wind duct 6 reduces the pressure on the cooling tower 1, because the wind duct 6 is set in the natural environment, especially in this case in the industrial area, the industrial area has corrosive gases, so the corrosion resistance can make the wind duct 6 not easily damaged, and the good thermal performance means that the wind duct 6 is made of insulating material, which has a protective effect on the operation of on-site workers.

[0031] Usually, the position of the wind tube 6 is high, and the wind tube 6 may encounter stormy weather. In order to prevent the wind tube 6 from shaking and effectively guide the gas, the reinforcing rib 7 has a fixing effect on the wind tube 6. The reinforcing rib 7 is a hollow strip shape, so that the reinforcing rib 7 fits better on the outer wall of the wind tube 6. The reinforcing rib 7 is more easily matched with the curved body on the wind tube 6. The wind tube 6 has a curved body, so when there is a strong wind, the gas is more likely to flow away from the outer wall of the wind tube 6. The wind tube 6 has a curved body, which helps the gas circulation.

[0032] In S2, the water collector 3 includes a plurality of water collecting sheets 8, and the plurality of water collecting sheets 8 are connected together at intervals, that is, there is a gap 12 between adjacent water collecting sheets 8, and the water collecting sheets 8 are bent in multiple directions, so that the gap 12 is bent. In the process of gas rising, the moisture in the gas will be blocked on the adjacent water collecting sheets 8. As more and more moisture is blocked on the water collecting sheets 8, it accumulates into liquid and drips downward, and finally falls on the S-shaped filler 4.

[0033] In S2, a plurality of nozzles 9 are arranged in the cooling tower 1, the plurality of nozzles 9 are located in the spraying area, the nozzles 9 are externally connected to the heat circulation liquid, the plurality of nozzles 9 are arranged on the pipeline, the pipeline is connected to the waste heat power generation system, the nozzles 9 spray out the atomized heat circulation liquid, the nozzles 9 are used to spray the heat circulation liquid onto the S-shaped filler 4, and the atomized heat circulation liquid falls on the S-shaped filler 4.

[0034] In S3, the surface of the S-shaped filler 4 is uneven, and the uneven surface of the S-shaped filler 4 can accumulate the heat circulation liquid, which is also beneficial to the flow of the heat circulation liquid. A plurality of curved through holes 11 are arranged on the S-shaped filler 4, and the through holes 11 are used for the heat circulation liquid to flow downward and the gas to flow upward. Because the through holes 11 are curved, the heat circulation liquid and the gas flow in the through holes 11 for a long time, which is beneficial to the heat exchange between the heat circulation liquid and the gas. In this example, the gas is cold air, that is, the gas whose temperature is lower than the temperature of the heat circulation liquid.

[0035] In this example, the S-shaped filler 4 is arranged in three layers in the vertical direction, so that after multiple layers of heat exchange, the temperature of the heat circulating liquid will drop lower.

[0036] In S3 , the outer periphery of the S-shaped filler 4 fits the inner wall of the cooling tower 1 , that is, the interior of the cooling tower 1 is divided into two upper and lower areas by the S-shaped filler 4 , and the heat circulation liquid and gas can only flow through the through hole 11 .

[0037] A device for improving the cooling effect of waste heat power generation, comprising a cooling tower 1, a fan 2, an S-shaped filler 4 and an air inlet 5, wherein the upper portion of the cooling tower 1 is externally connected to a water supply pipe 14, and the waste heat power generation system provides hot circulating liquid to the upper portion of the cooling tower 1 through a pipeline, and the bottom of the cooling tower 1 is used for externally connecting to a return water pipe 15, and the bottom of the cooling tower 1 is provided with a collecting chamber 13, and the collecting chamber 13 is used for collecting cold circulating liquid, and the bottom of the cooling tower 1 then provides cold circulating liquid to the waste heat power generation system through a pipeline, and the cold circulating liquid is used for heat dissipation of the waste heat power generation system.

[0038] The fan 2 is arranged at the top of the cooling tower 1, the air intake end of the fan 2 is aimed at the inside of the cooling tower 1, and the air outlet end of the fan 2 is aimed at the outside of the cooling tower 1. The S-shaped filler 4 is arranged in the middle of the cooling tower 1, and the nozzle 9 is arranged on the water supply pipe 14. The nozzle 9 is located above the S-shaped filler 4. The nozzle 9 sprays out atomized hot circulating liquid. A curved through hole 11 is arranged in the S-shaped filler 4, and the through hole 11 runs through the upper and lower ends of the S-shaped filler 4. In this way, the hot circulating liquid sprayed out falls on the S-shaped filler 4. The surface of the S-shaped filler 4 is uneven and has a curved surface. The air inlet 5 is arranged at the lower part of the cooling tower 1, and the normal temperature gas can enter the bottom of the cooling tower 1 through the air inlet 5. The normal temperature gas here is cold air with a temperature lower than that of the hot circulating liquid.

[0039] The S-shaped filler 4 has a plurality of through holes 11. When the fan 2 is turned on and aimed at the inside of the cooling tower 1 to inhale air, the cold air will flow from bottom to top. The cold air passes through the surface of the S-shaped filler 4 and the through holes 11. The heat circulating liquid realizes heat exchange on the surface of the S-shaped filler 4. The heat circulating liquid dissipates heat from the inside of the cooling tower 1 in the form of atomization. After the heat circulating liquid is atomized, it falls on the S-shaped filler 4 and slowly accumulates into liquid again. In this way, the heat circulating liquid flows downward through the surface of the S-shaped filler after cooling, or flows downward through the through holes 11 after cooling. The heat circulating liquid will not completely fill the through holes 11 after cooling, and heat exchange is realized in the through holes 11 with the upward cold air and the downward heat circulating liquid after cooling.

[0040] The curved through hole 11 can increase the heat exchange time between the cooled heat circulating liquid and the cold air, so that the cooled heat circulating liquid can be cooled again more fully.

[0041] The spraying direction of the nozzle 9 points to the S-shaped filler 4. A water collector 3 is arranged above the nozzle 9. After the thermal circulation liquid is atomized, part of it rises with the airflow. The airflow contains enough atomized thermal circulation liquid. When the airflow passes through the water collector 3, part of the liquid in the airflow will stay in the water collector 3. The water collector 3 blocks the water mist from rising, and the accumulated liquid falls down onto the S-shaped filler 4.

[0042] The air inlet 5 is located below the S-shaped filler 4. An air regulating plate 10 is rotatably provided at the air inlet 5. The air regulating plate 10 adjusts its angle with the air inlet direction by rotating. By rotating the air regulating plate 10, the air regulating plate 10 can block or release the gas flow. The air inlet 5 can be blocked or opened at a rotating angle. Rotating the air regulating plate 10 can adjust the gas flow at the air inlet 5 to cooperate with thermal cycle liquid cooling.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for improving the cooling effect of waste heat power generation, characterized in that: include: S1. A cooling tower is set up according to the needs of liquid flow, and a fan is set up on the top of the cooling tower; S2. Spraying hot circulating liquid in the cooling tower. The hot circulating liquid comes from the waste heat power generation system. A water collector is arranged above the spraying area. The air suction end of the fan is aligned with the air outlet end of the water collector. S3. An S-shaped filler is arranged in the cooling tower, the S-shaped filler is located below the spraying area, and the heat circulation liquid passes through the S-shaped filler; S4. An air inlet is provided on the wall of the cooling tower, and the air inlet is located below the S-shaped wave filler; S5. Collect cold circulating liquid at the bottom of the cooling tower, and use the cold circulating liquid to supply heat to the waste heat power generation system.

2. The method for improving the cooling effect of waste heat power generation according to claim 1, characterized in that: In S1, a wind tube is provided on the cooling tower, and a fan is located in the wind tube.

3. The method for improving the cooling effect of waste heat power generation according to claim 2, characterized in that: In S1, the air duct is made of glass fiber reinforced plastic, has a curved surface, and has reinforcing ribs on the outer wall of the air duct.

4. The method for improving the cooling effect of waste heat power generation according to claim 1, characterized in that: In S2, the water collector includes a plurality of water collecting plates, the plurality of water collecting plates are connected together at intervals, and the water collecting plates are bent in multiple directions.

5. The method for improving the cooling effect of waste heat power generation according to claim 1, characterized in that: In S2, a plurality of nozzles are arranged in the cooling tower, and the nozzles are externally connected to a heat circulating liquid, and the nozzles are used to spray the heat circulating liquid onto the S-shaped wave filler.

6. The method for improving the cooling effect of waste heat power generation according to claim 1, characterized in that: In S3, the surface of the S-shaped packing is uneven, and a plurality of curved through holes are arranged on the S-shaped packing, and the through holes are used for the downward flow of the heat circulation liquid and the upward flow of the gas.

7. The method for improving the cooling effect of waste heat power generation according to claim 6, characterized in that: In S3, the outer periphery of the S-shaped filler fits the inner wall of the cooling tower.

8. A device for improving the cooling effect of waste heat power generation, comprising a cooling tower (1), a fan (2), an S-shaped filler (4), an air inlet (5) and a nozzle (9), characterized in that: The upper part of the cooling tower (1) is externally connected to a water supply pipe, the lower part of the cooling tower (1) is externally connected to a water return pipe, the fan (2) is arranged at the top of the cooling tower (1), the S-shaped filler (4) is arranged in the middle of the cooling tower (1), a curved through hole (11) is arranged in the S-shaped filler (4), and the through hole (11) runs through the upper and lower ends of the S-shaped filler (4), the air inlet (5) is arranged at the lower part of the cooling tower (1), the air intake end of the fan (2) is aligned with the inside of the cooling tower (1), and the air outlet end of the fan (2) is aligned with the outside of the cooling tower (1), and the nozzle (9) is arranged on the water supply pipe, and the nozzle (9) is located above the S-shaped filler (4).

9. The device for improving the cooling effect of waste heat power generation according to claim 8, characterized in that: A water collector (3) is provided above the nozzle (9).

10. The device for improving the cooling effect of waste heat power generation according to claim 9, characterized in that: The air inlet (5) is located below the S-shaped filler (4), and an air regulating plate (10) is rotatably arranged in the air inlet (5), wherein the air regulating plate (10) is rotatably arranged to adjust its angle with respect to the air inlet direction.

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