Novel slag flushing water self-cooling device

Abstract

The utility model discloses a novel slag flushing water self-cooling device which comprises an automatic filtering device, a waste heat refrigerating unit and a closed cooling tower, the waste heat refrigerating unit comprises a generator, a condenser and an evaporator, a generator water inlet pipe is connected between the generator and the automatic filtering device, and a generator water outlet pipe is connected between the generator and the evaporator. A cooling tower water inlet pipe and a cooling tower water outlet pipe are connected between the condenser and the closed cooling tower, an evaporator water outlet pipe is connected to one side of the evaporator, a filter water inlet pipe is connected to the upper end of the automatic filtering device, an electric three-way valve is arranged on the filter water inlet pipe, and the filter water inlet pipe is connected with the evaporator water outlet pipe through the electric three-way valve. Energy recovery and reutilization are achieved through the waste heat refrigerating unit, slag flushing water enters the generator of the waste heat refrigerating unit after impurities are removed through the automatic filtering device, the slag flushing water serves as a driving heat source to heat a refrigerating working medium, heat needing to be discharged originally is converted into power of a refrigerating system, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of self-cooling of slag flushing water, and more specifically, to a novel self-cooling device for slag flushing water. Background Technology

[0002] In the processes of iron and steel smelting and coal-fired power generation, a large amount of high-temperature slag (usually above 800°C) is generated, which needs to be quenched (rapidly cooled) to form granular slag material (such as water-quenched blast furnace slag). This process generates a large amount of high-temperature flushing water (60-90°C), and direct discharge will cause energy waste and thermal pollution. Traditional flushing water treatment relies on natural cooling or external cooling equipment, which is inefficient and energy-intensive. With the tightening of environmental regulations and the promotion of the circular economy, efficient and low-energy cooling technology is needed to realize the recycling of flushing water. (8) It can reduce the blockage caused by suspended solids and scale in the slag water, and the heat exchange efficiency decays quickly. The concept of self-cooling is proposed to reduce the external energy input by using the residual pressure or heat energy of the flushing water itself to drive the cooling process (such as evaporative cooling and spray cooling). System integration combines the cooling device with the slag water treatment system (such as sedimentation tank and filter module) to realize the "cooling-purification-reuse" closed loop.

[0003] Therefore, this application provides a novel self-cooling device for slag flushing water to solve the problems mentioned in the background art. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a novel self-cooling device for slag flushing water. It can realize the recovery and reuse of energy through a waste heat refrigeration unit. After the slag flushing water passes through an automatic filtration device to remove impurities, it enters the generator of the waste heat refrigeration unit as a driving heat source to heat the refrigerant, converting the heat that would otherwise need to be discharged into the power of the refrigeration system, realizing the cascade utilization of energy and greatly improving energy utilization efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A novel self-cooling device for slag flushing water includes an automatic filtration device, a waste heat refrigeration unit, and a closed-loop cooling tower. The waste heat refrigeration unit includes a generator, a condenser, and an evaporator. A generator inlet pipe connects the generator to the automatic filtration device, and a generator outlet pipe connects the generator to the evaporator. A cooling tower inlet pipe and a cooling tower outlet pipe connect the condenser to the closed-loop cooling tower. An evaporator outlet pipe is connected to one side of the evaporator. A filter inlet pipe is connected to the upper end of the automatic filtration device, and an electric three-way valve is installed on the filter inlet pipe. The filter inlet pipe is connected to the evaporator outlet pipe via the electric three-way valve. This device enables energy recovery and reuse through the waste heat refrigeration unit. After impurities are removed by the automatic filtration device, the slag flushing water enters the generator of the waste heat refrigeration unit, serving as a driving heat source to heat the refrigerant. This converts the heat that would otherwise be discharged into power for the refrigeration system, achieving cascaded energy utilization and significantly improving energy efficiency.

[0007] As a further improvement of this utility model, an electrical control cabinet is provided on one side of the device.

[0008] As a further improvement of this utility model, both the filter inlet pipe and the generator inlet pipe are equipped with flow sensors, and the generator inlet pipe is equipped with a valve.

[0009] As a further improvement of this utility model, water pumps are installed on both the generator inlet pipe and the cooling tower outlet pipe.

[0010] As a further improvement of this utility model, temperature sensors are installed on the filter inlet pipe, generator inlet pipe, generator outlet pipe, evaporator outlet pipe, cooling tower inlet pipe, and automatic filtration device.

[0011] As a further embodiment of this utility model: the bottom end of the automatic filtration device is connected to a drain pipe, an electric drain valve is installed on the drain pipe, and a material sensor is installed inside the automatic filtration device.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] 1. This device filters impurities from the flushing water using an automatic filtration system before sending it to the generator of a waste heat refrigeration unit. This generator acts as a heat source to heat the refrigerant. During this process, the flushing water releases high-temperature heat, causing the refrigerant to concentrate and separate, completing the initial energy conversion. Subsequently, the cooled flushing water enters the evaporator to exchange heat with the refrigerant, achieving secondary cooling and releasing heat again. Through this multi-stage energy recovery and utilization method, the device fully utilizes the heat that would otherwise be wasted, converting it into effective power for the refrigeration system, greatly improving energy efficiency.

[0014] 2. This device features highly automated operation, with all components working in concert. Through advanced sensors and control systems, it achieves precise monitoring and adjustment. The material sensors installed in the automatic filtration device can monitor the accumulation of waste residue in real time. When the waste residue reaches a certain amount, the electric drain valve automatically opens to discharge the waste. The entire process requires no manual intervention, avoiding errors and delays that may be caused by manual operation, and ensuring the continuous and efficient operation of the filtration device.

[0015] 3. This device uses a closed-loop cooling tower to cool the water after the condenser absorbs heat. The closed-loop cooling tower reduces the direct contact between water and air through indirect heat exchange, thereby greatly reducing the amount of water evaporation and effectively saving water resources. In addition, in traditional treatment methods, the waste heat carried by the slag flushing water is directly discharged into the environment, which not only wastes energy but also causes thermal pollution to the surrounding environment. This device recovers and utilizes the waste heat in the slag flushing water through a waste heat refrigeration unit, converting it into power for the refrigeration system, reducing the disorderly emission of heat and reducing thermal pollution to the environment. Attached Figure Description

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Explanation of the labels in the diagram:

[0018] 1. Filter inlet pipe; 2. Generator inlet pipe; 3. Generator outlet pipe; 4. Evaporator outlet pipe; 5. Cooling tower inlet pipe; 6. Cooling tower outlet pipe; 7. Electric drain valve; 8. Automatic filtration device; 9. Drain pipe; 10. Electrical control cabinet; 11. Waste heat refrigeration unit; 12. Generator; 13. Condenser; 14. Evaporator; 15. Water pump; 16. Closed-circuit cooling tower; 17. Electric three-way valve; 18. Material sensor; 19. Flow sensor; 20. Temperature sensor; 21. Valve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] Please see Figure 1 A novel self-cooling device for slag flushing water includes an automatic filtration device 8, a waste heat refrigeration unit 11, and a closed-loop cooling tower 16. The waste heat refrigeration unit 11 includes a generator 12, a condenser 13, and an evaporator 14. A generator inlet pipe 2 connects the generator 12 to the automatic filtration device 8, and a generator outlet pipe 3 connects the generator 12 to the evaporator 14. A cooling tower inlet pipe 5 and a cooling tower outlet pipe 6 connect the condenser 13 to the closed-loop cooling tower 16. An evaporator outlet pipe 4 is connected to one side of the evaporator 14. The automatic filtration device... The filter device 8 is connected to the filter inlet pipe 1 at the upper end. The filter inlet pipe 1 is equipped with an electric three-way valve 17. The filter inlet pipe 1 is connected to the evaporator outlet pipe 4 through the electric three-way valve 17. This enables the recovery and reuse of energy through the waste heat refrigeration unit. After the slag flushing water passes through the automatic filtration device to remove impurities, it enters the generator of the waste heat refrigeration unit as a driving heat source to heat the refrigerant. This converts the heat that was originally to be discharged into the power of the refrigeration system, realizing the cascade utilization of energy and greatly improving energy utilization efficiency.

[0023] An electrical control cabinet 10 is provided on one side of the device. Flow sensors 19 are provided on both the filter inlet pipe 1 and the generator inlet pipe 2. A valve 21 is provided on the generator inlet pipe 2. Water pumps 15 are installed on both the generator inlet pipe 2 and the cooling tower outlet pipe 6. Temperature sensors 20 are installed on the filter inlet pipe 1, the generator inlet pipe 2, the generator outlet pipe 3, the evaporator outlet pipe 4, the cooling tower inlet pipe 5, and the automatic filter device 8. A drain pipe 9 is connected to the bottom of the automatic filter device 8. An electric drain valve 7 is installed on the drain pipe 9. A material sensor 18 is installed inside the automatic filter device 8.

[0024] Working principle: The automatic filter 8 filters out impurities from the flushing water, leaving the waste residue in the automatic filter 8. When the waste residue reaches a certain amount as detected by the material sensor 18, the electric drain valve 7 opens to discharge the waste residue. The filtered hot water is pumped by the water pump 15 to the generator 12 of the waste heat refrigeration unit 11 as a driving heat source to heat the refrigerant. During this process, the hot water releases high-temperature heat, and the refrigerant concentrates and separates after being heated, initially reducing the temperature of the hot water. The cooled hot water is then pumped by the water pump 15 through the generator inlet pipe 2 into the evaporator 14, where it exchanges heat with the refrigerant, such as chilled water. Inside the evaporator 14, the refrigerant absorbs heat and evaporates, further absorbing waste heat from the hot water. This invention achieves secondary cooling of hot water. After the condenser 13 absorbs heat from the hot water, it is sent to the closed cooling tower 16 through the cooling tower inlet pipe 5 for cooling. The water cooled in the closed cooling tower 16 is then sent back to the condenser 13 by the water pump 15 as a low-temperature refrigerant. In this process, the closed cooling tower 16 is used to reduce water evaporation. Compared with the prior art, this invention can realize the recovery and reuse of energy through the waste heat refrigeration unit. After the slag flushing water passes through the automatic filtration device to remove impurities, it enters the generator of the waste heat refrigeration unit as a driving heat source to heat the refrigerant, converting the heat that originally needed to be discharged into the power of the refrigeration system, realizing the cascade utilization of energy and greatly improving energy utilization efficiency.

[0025] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A new type of slag flushing water self-cooling device, comprising an automatic filtering device (8), a waste heat refrigeration unit (11) and a closed cooling tower (16), characterized in that, The waste heat refrigeration unit (11) includes a generator (12), a condenser (13) and an evaporator (14). The generator (12) is connected to the automatic filter device (8) by a generator inlet pipe (2). The generator (12) is connected to the evaporator (14) by a generator outlet pipe (3). The condenser (13) is connected to the closed cooling tower (16) by a cooling tower inlet pipe (5) and a cooling tower outlet pipe (6). One side of the evaporator (14) is connected to an evaporator outlet pipe (4). The upper end of the automatic filter device (8) is connected to a filter inlet pipe (1). The filter inlet pipe (1) is equipped with an electric three-way valve (17). The filter inlet pipe (1) is connected to the evaporator outlet pipe (4) through the electric three-way valve (17).

2. A novel water quenching device for slag according to claim 1, characterized in that, An electrical control cabinet (10) is provided on one side of the device.

3. A novel water quenching device for slag according to claim 1, characterized in that, Both the filter inlet pipe (1) and the generator inlet pipe (2) are equipped with flow sensors (19), and the generator inlet pipe (2) is equipped with a valve (21).

4. A novel water quenching device for slag according to claim 1, characterized in that, Water pumps (15) are installed on both the generator inlet pipe (2) and the cooling tower outlet pipe (6).

5. A novel water quenching device for slag according to claim 1, characterized in that, Temperature sensors (20) are installed on the filter inlet pipe (1), generator inlet pipe (2), generator outlet pipe (3), evaporator outlet pipe (4), cooling tower inlet pipe (5) and automatic filter device (8).

6. A novel water quenching device for slag according to claim 1, characterized in that, The automatic filter device (8) is connected to a drain pipe (9) at its bottom end. An electric drain valve (7) is installed on the drain pipe (9). A material sensor (18) is installed inside the automatic filter device (8).

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