A diversion condensing groove and a circulating water cooling and recovery device for waste heat power generation of an electric arc furnace

Abstract

The utility model embodiment provides a kind of diversion condensing tank and the circulating water cooling recovery device of electric power generation of residual heat of ore-heating furnace, it is related to industrial residual heat recovery technical field.The diversion condensing tank and the circulating water cooling recovery device of electric power generation of residual heat of ore-heating furnace, including diversion condensing tank, the diversion condensing tank is the tank body of cuboid, its one side is equipped with inlet, diversion condensing tank inside is provided with several condensing plate, condensing plate lower side is equipped with condensing water collecting groove on diversion condensing tank, the bottom of condensing water collecting groove is equipped with condensing water outlet.The utility model is combined by the way of forced flow, natural condensation and high efficiency reuse, significantly improves the cooling and recovery efficiency of circulating water in the electric power generation system of residual heat of ore-heating furnace, realizes the dual goal of energy saving and emission reduction and resource recycling.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste heat recovery technology, and in particular to a flow-guiding condensation tank and a circulating water cooling and recovery device for waste heat power generation in a submerged arc furnace. Background Technology

[0002] In industries such as metallurgy and chemical engineering, electric arc furnaces, as high-temperature smelting equipment, generate a large amount of waste heat resources during operation. In order to achieve efficient energy utilization, waste heat power generation technology is now widely used. This technology involves recovering the heat from the high-temperature flue gas or cooling water discharged from the electric arc furnace to heat water and generate steam, which then drives a steam turbine to generate electricity.

[0003] However, in the circulating water cooling process of this system, the cooling tower usually adopts an open structure. During the circulation process, the cooling water will generate a large amount of water vapor due to evaporation, resulting in the waste of water resources and the increase of environmental humidity. At present, traditional cooling systems mostly adopt natural cooling or spray cooling methods, lacking an effective mechanism for recovering evaporated water vapor, resulting in low condensation efficiency and low water resource utilization, which makes it difficult to meet the high standards of energy conservation and environmental protection required by modern industry. This waste problem is even more prominent in areas with high temperature, high humidity or water scarcity. Utility Model Content

[0004] To achieve the above objectives, this application provides a flow-guiding condensation tank, which is a rectangular prism-shaped tank with a steam inlet on one side. Several condensation plates are arranged inside the flow-guiding condensation tank, and a condensate collection tank is provided on the flow-guiding condensation tank below the condensation plates. A condensate outlet is provided at the bottom of the condensate collection tank.

[0005] Preferably, the condenser plates are arranged in a "V" shape and have a hydrophilic coating on their surface.

[0006] Preferably, the interior of the condensate collection tank is provided with a drainage slope that slopes toward the condensate outlet.

[0007] Preferably, the wall of the flow-guiding condensation tank is provided with a heat insulation layer, which is made of aluminum silicate fiber material and has a thickness of 50mm to 80mm, to prevent external heat from interfering with the condensation process.

[0008] Preferably, the upper end of the flow-guiding condensation tank is equipped with several long pipes, each long pipe is equipped with several spray heads, the inlets of the long pipes are connected to the outlets of the diversion pipes, and the inlets of the diversion pipes are connected to an external water source.

[0009] Preferably, in another aspect, this application also provides a circulating water cooling and recovery device for waste heat power generation in a submerged arc furnace with a guide flow condensation tank, including a cooling tower, a guide flow condensation tank, an axial flow fan, and a condensate return pipe. The cooling tower has an open structure, and a large amount of water vapor is generated during the downward flow of cooling water. An axial flow fan is provided on one side of the cooling tower to directionally transport the water vapor into the guide flow condensation tank. The guide flow condensation tank is located on the other side of the cooling tower and is equipped with a condensation heat exchange component inside to condense the water vapor into liquid water. The condensate is transported to the circulating water system for reuse through a condensate return pipe connected to the bottom of the guide flow condensation tank.

[0010] Preferably, the upper end of the cooling tower is provided with a steam collection hood, which is connected to an axial flow fan through a steam guide pipe. The outlet of the axial flow fan is connected to the steam inlet of the condensate guide tank through an air guide pipe.

[0011] Preferably, the condensate return pipe is connected to the condensate outlet, and the condensate return pipe is equipped with an automatic control valve and a flow meter, with the automatic control valve connected to the control system.

[0012] Preferably, the axial flow fan is mounted on a fan support, which is a steel structure and is fixedly connected to the side wall of the cooling tower by bolts.

[0013] Preferably, a bottom bracket is fixedly installed on one side of the fan bracket, and an extension bracket is connected to the upper end of the bottom bracket, which supports the flow guiding condensation tank.

[0014] This utility model provides a flow-guiding condensation tank and a circulating water cooling and recovery device for waste heat power generation in a submerged arc furnace, which, compared with the prior art:

[0015] 1. This utility model uses an axial flow fan installed on one side of the cooling tower to force a large amount of water vapor generated during the cooling process to the guide condensation tank. This forced flow method significantly improves the transmission efficiency of water vapor, ensuring that it can quickly and centrally enter the guide condensation tank for condensation. The guide condensation tank is equipped with "V"-shaped condensation plates. The surface of these condensation plates is coated with a hydrophilic material to enhance the water vapor condensation effect. In addition, the close cooperation between the steam collection hood, the steam guide pipe and the axial flow fan further optimizes the collection and transportation path of water vapor, reduces energy loss, and thus achieves efficient condensation.

[0016] 2. This utility model fully utilizes the principle of natural condensation through the design of the flow-guiding condensation tank. The insulation layer effectively isolates external heat interference, ensuring the optimal temperature conditions for the condensation process. The condensate collection tank set below the condensation plate has a drainage slope inclined towards the condensate outlet, which allows the condensed liquid water to be quickly collected and discharged. Finally, it is returned to the circulating water system for reuse through the condensate return pipe. The entire system uses automatic control valves and flow meters to precisely regulate the condensate return speed, ensuring stable operation of the system. This design not only improves the efficiency of water resource utilization and achieves the goal of energy conservation and emission reduction, but also reduces the cost of industrial production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic plan view of the overall structure of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the flow-guiding condensation tank structure according to an embodiment of the present utility model;

[0021] Figure 4 This is a top view of one embodiment of the flow-guiding condensation tank structure of this utility model;

[0022] Figure 5 This is an embodiment of the present utility model. Figure 4 Sectional view along point AA;

[0023] Figure 6 This is a second top view of the flow-guiding condensation tank structure according to an embodiment of the present utility model;

[0024] Figure 7 This is an embodiment of the present utility model. Figure 6 Sectional view along BB;

[0025] Figure 8 This is a schematic diagram of the structure of the fan bracket and other components according to an embodiment of the present utility model.

[0026] icon:

[0027] 1. Cooling tower; 2. Steam collection hood; 3. Steam guide pipe; 4. Axial flow fan; 5. Air guide duct; 6. Fan support; 7. Bottom support; 8. Extension support; 9. Condensation guide trough; 91. Condensation plate; 92. Condensate collection trough; 93. Condensate outlet; 94. Long pipe; 95. Spray head; 96. Condensate return pipe; 97. Automatic control valve; 98. Flow meter; 99. Insulation layer; 10. Diversion pipe. Detailed Implementation

[0028] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] Please refer to Figures 3 to 5 This utility model embodiment provides a flow guiding condensation tank, including a flow guiding condensation tank 9. The flow guiding condensation tank 9 is a cuboid structure tank with a steam inlet on one side for receiving water vapor transported from the outside.

[0030] Several condensing plates 91 are arranged inside the flow-guiding condensing tank 9 in a “V” shape to enhance condensation efficiency. The surface of the condensing plates is coated with a hydrophilic coating to improve the adhesion of water vapor to the surface, thereby accelerating the formation and shedding of condensate droplets.

[0031] A condensate collection tank 92 is provided on the inner wall of the condensation tank 9 below the condensation plate 91 to collect the liquid water formed by condensation. A condensate outlet 93 is provided at the bottom of the condensate collection tank 92 to discharge the condensate to the subsequent return system.

[0032] Furthermore, the condensate collection tank 92 is provided with a drainage slope, which is inclined towards the condensate outlet 93 to accelerate the collection and discharge of condensate and prevent water accumulation from affecting the condensation efficiency.

[0033] like Figure 6 and Figure 7 As shown, an insulation layer 99 is provided inside the wall of the flow-guiding condensation tank 9. The insulation layer 99 is made of aluminum silicate fiber material with a thickness of 50mm to 80mm. It can effectively isolate the interference of external heat on the condensation process, improve the condensation efficiency and maintain the temperature stability inside the tank.

[0034] Several long pipes 94 are installed on the upper part of the flow-guiding condensation tank 9. Each long pipe 94 is equipped with multiple spray heads 95. The water inlets of the multiple long pipes 94 are connected to the water outlets of the diversion pipes 10, and the water inlets of the diversion pipes 10 are connected to an external water source. This is used to spray and clean the condensation plate 91 or provide auxiliary cooling when needed, so as to prevent the condensation efficiency from being affected by the accumulation of dirt.

[0035] like Figure 1 and Figure 2As shown, this utility model also provides a circulating water cooling and recovery device for waste heat power generation in a submerged arc furnace, including a cooling tower 1, a flow guiding condensate tank 9, an axial flow fan 4, and a condensate return pipe 96.

[0036] The cooling tower 1 adopts an open structure. A large amount of water vapor is generated during the cooling water flow from top to bottom. An axial flow fan 4 is installed on one side of the cooling tower 1 to directionally transport the water vapor generated during the cooling process to the interior of the guide condensation tank 9.

[0037] The flow-guiding condensation tank 9 is located on the other side of the cooling tower 1 and is used to condense water vapor into liquid water. The condensed liquid water is then transported to the circulating water system through the condensate return pipe 96 connected to the bottom of the flow-guiding condensation tank 9, thereby realizing the recycling of water resources.

[0038] Furthermore, the top of the cooling tower 1 is equipped with a steam collection hood 2, which is connected to the axial flow fan 4 through the steam guide pipe 3. The air outlet of the axial flow fan 4 is connected to the steam inlet of the condensation tank 9 through the air guide pipe 5, forming a complete water vapor collection and transportation path.

[0039] The condensate return pipe 96 is connected to the condensate outlet 93. An automatic control valve 97 and a flow meter 98 are installed on the condensate return pipe 96. The automatic control valve 97 is electrically connected to the control system and is used to automatically adjust the return speed according to the condensate volume to ensure the stability and safety of the system operation.

[0040] like Figure 8 As shown, the axial flow fan 4 is installed on the fan bracket 6. The fan bracket 6 is made of steel and is fixedly connected to the side wall of the cooling tower 1 by bolts to ensure that the axial flow fan 4 is installed stably.

[0041] Furthermore, a bottom support 7 is fixedly installed on one side of the fan bracket 6, and an extension support 8 is connected to the upper end of the bottom support 7. The extension support 8 is used to support the flow guiding condensation tank 9 to ensure its structural stability and safety during operation.

[0042] In summary, during operation, a large amount of water vapor generated during the cooling water circulation process in the cooling tower 1 is collected by the top steam collection hood 2 and transported to the interior of the guide condensation tank 9 via the axial flow fan 4, steam guide pipe 3, and air guide pipe 5. The water vapor comes into contact with the condensation plate 91 in the guide condensation tank 9, and the hydrophilic coating on the surface of the condensation plate 91 promotes the rapid condensation of water vapor into droplets. The droplets slide down to the condensate collection tank 92 below and are collected by the structure with a drainage slope to the condensate outlet 93 for discharge. The condensate is then transported to the circulating water system for reuse via the condensate return pipe 96.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flow-guiding condensation tank, comprising a flow-guiding condensation tank (9), characterized in that: The flow guiding condensation tank (9) is a rectangular tank with a steam inlet on one side. Several condensation plates (91) are installed inside the flow guiding condensation tank (9). A condensate collection tank (92) is opened on the flow guiding condensation tank (9) below the condensation plates (91). A condensate outlet (93) is opened at the bottom of the condensate collection tank (92).

2. The flow-guiding condensation tank according to claim 1, characterized in that: The condenser plates (91) are arranged in a "V" shape and have a hydrophilic coating on their surface.

3. The flow-guiding condensation tank according to claim 2, characterized in that: The condensate collection tank (92) is provided with a drainage slope inside, which is inclined toward the condensate outlet (93).

4. The flow-guiding condensation tank according to claim 1, characterized in that: The wall of the flow-guiding condensation tank (9) is provided with a heat insulation layer (99), which is made of aluminum silicate fiber material and has a thickness of 50mm to 80mm. It is used to prevent external heat from interfering with the condensation process.

5. The flow-guiding condensation tank according to claim 4, characterized in that: The upper end of the flow-guiding condensation tank (9) is equipped with several long pipes (94), each long pipe (94) is equipped with several spray heads (95), the inlets of the long pipes (94) are connected to the outlet of the diversion pipe (10), and the inlet of the diversion pipe (10) is connected to the external water source.

6. A circulating water cooling and recovery device for waste heat power generation in a submerged arc furnace, comprising the flow guiding condensation tank as described in any one of claims 1-5, characterized in that: The system includes a cooling tower (1), a flow-guiding condensation tank (9), an axial flow fan (4), and a condensate return pipe (96). The cooling tower (1) has an open structure. A large amount of water vapor is generated during the downward flow of cooling water. An axial flow fan (4) is installed on one side of the cooling tower (1) to directionally transport the water vapor to the interior of the flow-guiding condensation tank (9). The flow-guiding condensation tank (9) is located on the other side of the cooling tower (1) and is equipped with a condensation heat exchange component to condense the water vapor into liquid water. The condensate is transported to the circulating water system for reuse through the condensate return pipe (96) connected to the bottom of the flow-guiding condensation tank (9).

7. The waste heat power generation circulating water cooling and recovery device for submerged arc furnaces according to claim 6, characterized in that: The cooling tower (1) is equipped with a steam collection hood (2) at the upper end. The steam collection hood (2) is connected to the axial flow fan (4) through the steam guide pipe (3). The outlet of the axial flow fan (4) is connected to the steam inlet of the condensation tank (9) through the air guide pipe (5).

8. The circulating water cooling and recovery device for waste heat power generation from a submerged arc furnace according to claim 7, characterized in that: The condensate return pipe (96) is connected to the condensate outlet (93). The condensate return pipe (96) is equipped with an automatic control valve (97) and a flow meter (98). The automatic control valve (97) is connected to the control system.

9. The waste heat power generation circulating water cooling and recovery device for submerged arc furnaces according to claim 8, characterized in that: The axial flow fan (4) is mounted on the fan support (6), which is a steel structure and is fixedly connected to the side wall of the cooling tower (1) by bolts.

10. The waste heat power generation circulating water cooling and recovery device for submerged arc furnaces according to claim 9, characterized in that: A bottom bracket (7) is fixedly installed on one side of the fan bracket (6), and an extension bracket (8) is connected to the upper end of the bottom bracket (7). The extension bracket (8) supports the flow condensation tank (9).

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