A cement waste heat power generation device that can increase the concentration of circulating water

Abstract

This utility model discloses a cement waste heat power generation device that can increase the concentration of circulating water, relating to the field of cement production waste heat power generation technology. It includes an electrocoagulation tank, an electro-oxidation tank on one side of the electrocoagulation tank, and an electro-deionization tank on one side of the electro-oxidation tank. Mounting frames A, B, and C are respectively mounted on the top of the electrocoagulation tank, electro-oxidation tank, and electro-deionization tank. An electrode plate is mounted on the bottom of mounting frame A, and an electrode assembly A is mounted on the bottom of mounting frame B. This utility model adopts a treatment process integrating the electrocoagulation tank, electro-oxidation tank, and electro-deionization tank, reducing the use of chemical agents and minimizing secondary pollution to the environment. Simultaneously, by increasing the concentration ratio, it significantly reduces the amount of makeup water and wastewater, lowering energy consumption. Furthermore, it effectively inhibits scaling and corrosion in the circulating water system, maintains the high efficiency of heat exchanger heat transfer, and improves the overall operating efficiency and stability of the waste heat power generation system.

Description

Technical Field

[0001] This utility model relates to the field of waste heat power generation technology in cement production, specifically a cement waste heat power generation device that can increase the concentration of circulating water. Background Technology

[0002] With increasing global awareness of energy efficiency and environmental protection, exploring and utilizing waste heat resources from industrial production processes has become a key approach to energy conservation and emission reduction. The cement industry, as a major energy consumer, considers the large amounts of low-temperature waste heat emitted from its production lines as valuable renewable resources. Waste heat power generation technology, especially cement waste heat power generation systems, not only improves the overall efficiency of energy utilization by recovering and converting this waste heat into electricity, but also significantly reduces greenhouse gas emissions, making it an important measure for achieving the green transformation of the cement industry.

[0003] However, with the increasing demand for efficient operation of waste heat power generation systems, the water quality management issues faced by the supporting circulating cooling water systems are becoming increasingly prominent. Under long-term high-temperature and high-load operating environments, circulating water is susceptible to factors such as calcium and magnesium hardness, excessive alkalinity, and excessive microbial growth, leading to scale formation and accelerated corrosion. This, in turn, affects heat exchange efficiency, increases maintenance costs, and even threatens the stable operation of the entire system. While traditional water treatment methods relying on chemical agents can alleviate these problems to some extent, they have limitations such as high agent consumption, high costs, and the potential for secondary pollution.

[0004] Currently, the existing waste heat power generation system has a maximum circulating water volume of 1970 m³. 3 / h, with a water holding capacity of 500m³ 3 (Including water stored in pipelines), the makeup water is groundwater. Currently, this system uses traditional chemical treatment, resulting in high salt content (mainly calcium and magnesium salts) and excessive alkalinity in the circulating water. This leads to a low concentrate ratio and a relatively large discharge volume. Traditional chemical treatment of circulating water cannot improve water quality itself and can only delay corrosion and scaling of condensers and pipelines, which poses certain pollution and dangers. It also has varying degrees of scaling and corrosion tendency. At the same time, some scale, microbial secretions, and sludge can easily deposit on the surface of the condenser, affecting the heat transfer effect. In severe cases, it can cause condenser blockage, resulting in increased system resistance, increased energy consumption, decreased working efficiency, and accelerated system corrosion. In addition, the discharged concentrate contains chemical components and generally needs to undergo secondary deep treatment before it can be discharged or reused. The sewage discharge volume is relatively large, and the reuse cost is particularly high. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a cement waste heat power generation device that can increase the concentration of circulating water, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cement waste heat power generation device capable of increasing the concentration of circulating water, comprising an electrocoagulation tank, an electro-oxidation tank disposed on one side of the electrocoagulation tank, an electro-deionization tank disposed on one side of the electro-oxidation tank, and mounting frames A, B, and C respectively disposed at the top of the electrocoagulation tank, the electro-oxidation tank, and the electro-deionization tank, an electrode plate mounted at the bottom of mounting frame A, an electrode assembly A mounted at the bottom of mounting frame B, and an electrode assembly B mounted at the bottom of mounting frame C, a stirrer disposed between the two mounting frames A on the inner side of the electrocoagulation tank, and a selective permeable membrane disposed between the two mounting frames C inside the electro-deionization tank.

[0007] Preferably, one end of each of the electrode plate, electrode assembly A, and electrode assembly B is connected to a wire, and the wire passes through mounting bracket A, mounting bracket B, and mounting bracket C respectively.

[0008] Preferably, water pumps are installed on the support plates on one side of the electrocoagulation tank and the electrooxidation tank, and connecting pipes are connected between the water pumps and the electrocoagulation tank and the electrooxidation tank, as well as between the water pumps and the electrodeionization tank.

[0009] Preferably, the electrode assembly A consists of an anode A and a cathode A, and the anode A and cathode A are respectively mounted at the bottom end of the mounting frame B.

[0010] Preferably, the electrode assembly B consists of an anode B and a cathode B, and the anode B and cathode B are respectively mounted at the bottom end of the mounting frame C.

[0011] Preferably, an inlet pipe is provided at the bottom of one side of the electrocoagulation tank, and an outlet pipe is provided at the bottom of one side of the electrodeionization tank.

[0012] Preferably, the stirrer consists of a drive motor, a horizontal plate, and a stirring shaft.

[0013] Preferably, the inner side of the electro-deionization cell is provided with positioning mechanisms at both ends of the selective permeable membrane. The positioning mechanisms consist of a positioning frame, a positioning plate, a support shaft, and an elastic pad.

[0014] Preferably, the positioning frame is symmetrically arranged inside the electro-deionization cell, the positioning plate is rotatably connected to the top of the electro-deionization cell via a support shaft, and the elastic pad is arranged at the end of the positioning plate near the selective permeable membrane.

[0015] In summary, the present invention has the following main advantages:

[0016] 1. This utility model adopts a treatment process that integrates an electrocoagulation tank, an electro-oxidation tank, and an electro-deionization tank, reducing the use of chemical agents and reducing secondary pollution to the environment. At the same time, by increasing the concentration ratio, it significantly reduces the amount of water replenishment and drainage, thereby reducing energy consumption. It also effectively inhibits scaling and corrosion in the circulating water system, maintains the high efficiency of heat transfer in the heat exchanger, and improves the overall operating efficiency and stability of the waste heat power generation system.

[0017] 2. This utility model has a positioning mechanism. Since the positioning plate and the electro-deionization cell are rotatably connected by a support shaft, the positioning plate can be rotated 90 degrees to separate it from the selective permeable membrane. The selective permeable membrane can be moved upward to separate it from the positioning frame, which facilitates the replacement of the selective permeable membrane and improves the convenience of the cement waste heat power generation equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-person perspective;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0020] Figure 3 This is an exploded perspective view of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the stirrer of this utility model.

[0022] In the diagram: 1. Electrocoagulation tank; 2. Electrooxidation tank; 3. Electrodeionization tank; 4. Mounting frame A; 5. Mounting frame B; 6. Mounting frame C; 7. Electrode plate; 8. Electrode assembly A; 9. Electrode assembly B; 10. Selective permeable membrane; 11. Stirrer; 12. Wire; 13. Positioning mechanism; 1301. Positioning frame; 1302. Positioning plate; 1303. Support shaft; 1304. Elastic pad; 14. Inlet pipe; 15. Water pump; 16. Connecting pipe. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] A cement waste heat power generation device that can increase the concentration of circulating water, such as Figures 1-4As shown, the system includes an electrocoagulation tank 1, an electro-oxidation tank 2 on one side of the electrocoagulation tank 1, and an electro-deionization tank 3 on one side of the electro-oxidation tank 2. An inlet pipe 14 is located at the bottom of one side of the electrocoagulation tank 1, and an outlet pipe is located at the bottom of one side of the electro-deionization tank 3. Mounting frames A4, B5, and C6 are respectively mounted on the top of the electrocoagulation tank 1, electro-oxidation tank 2, and electro-deionization tank 3. An electrode plate 7 is mounted on the bottom of mounting frame A4, and an electrode assembly A8, consisting of an anode A and a cathode A, is mounted on the bottom of mounting frame B5. The mounting frame C6... An electrode assembly B9 is installed at the bottom, which consists of an anode B and a cathode B. The anode B and cathode B are respectively installed at the bottom of the mounting frame C6. A selective permeable membrane 10 is provided inside the electrodeionization cell 3 between the two mounting frames C6. One end of the electrode plate 7, electrode assembly A8 and electrode assembly B9 are all connected to a wire 12, which passes through the mounting frames A4, B5 and C6 respectively. A water pump 15 is installed on the support plate on one side of the electrocoagulation cell 1 and the electrooxidation cell 2. The water pump 15 is connected to the electrocoagulation cell 1 and the electrooxidation cell 2 and to the electrooxidation cell 2 and the electrodeionization cell 3 by a connecting pipe 16.

[0026] See Figures 1-4 It can be seen that the circulating water enters the electrocoagulation tank 1 through the inlet pipe 14. The electrode plate 7 achieves an electrochemical effect through electron transfer in the circulating water, generating metal cation flocculants. At the same time, the stirrer 11 accelerates the reaction and promotes the precipitation of pollutants. The circulating water treated by electrocoagulation enters the electro-oxidation tank 2 through the cooperation of the water pump 15 and the connecting pipe 16. The anode A and cathode A of the electrode assembly A8 generate an electrochemical reaction in the electro-oxidation tank 2, which oxidizes and decomposes pollutants, reducing BOD5, COD, NH3-N, etc. in the circulating water. Then, it is circulated into the electro-deionization tank 3 through the cooperation of the water pump 15 and the connecting pipe 16. The anions and cations in the water migrate through the applied DC electric field and selectively permeate through the selective permeation membrane 10 to remove calcium and magnesium ions and other dissolved salts in the water, thereby improving the purity of the water.

[0027] See Figure 1 and Figure 4 It is known that an agitator 11 is provided on the inner side of the electrocoagulation tank 1 between the two mounting frames A4. The agitator 11 consists of a drive motor, a horizontal plate, and a stirring shaft. When the agitator 11 is working, it can accelerate the reaction and promote the precipitation of pollutants.

[0028] See Figures 1-3It is known that a positioning mechanism 13 is provided on the inner side of the electrodeionization cell 3 at both ends of the selective permeation membrane 10. The positioning mechanism 13 is composed of a positioning frame 1301, a positioning plate 1302, a support shaft 1303 and an elastic pad 1304. The positioning frame 1301 is symmetrically arranged on the inner side of the electrodeionization cell 3. The positioning plate 1302 is rotatably connected to the top of the electrodeionization cell 3 through the support shaft 1303. The elastic pad 1304 is arranged at the end of the positioning plate 1302 near the selective permeation membrane 10.

[0029] See Figures 1-3 As can be seen, since the positioning plate 1302 and the electro-deionization cell 3 are rotatably connected through the support shaft 1303, the positioning plate 1302 can be rotated 90 degrees to separate it from the selective permeable membrane 10, and the selective permeable membrane 10 can be moved upward to separate it from the positioning frame 1301. This makes it easier to replace the selective permeable membrane 10 and improves the convenience of the cement waste heat power generation equipment.

[0030] The working principle of this utility model is as follows: When using the cement waste heat power generation equipment that can increase the concentration of circulating water, the circulating water enters the electrocoagulation tank 1 through the inlet pipe 14. The electrode plate 7 achieves an electrochemical effect through electron transfer in the circulating water, generating metal cation flocculants. At the same time, the stirrer 11 accelerates the reaction and promotes the precipitation of pollutants. The circulating water treated by electrocoagulation enters the electrooxidation tank 2 through the cooperation of the water pump 15 and the connecting pipe 16. The anode A and cathode A of the electrode assembly A8 generate an electrochemical reaction in the electrooxidation tank 2, causing the pollutants to be oxidized and decomposed, reducing BOD5, COD, NH3-N, etc. in the circulating water. Then, it is circulated through the cooperation of the water pump 15 and the connecting pipe 16 into the electrodeionization tank. Sub-pool 3 uses an external DC electric field to cause the anions and cations in the water to migrate and selectively permeate through the selective permeation membrane 10, removing calcium and magnesium ions and other dissolved salts from the water, thus improving water purity. By adopting a treatment process that integrates electrocoagulation tank 1, electrooxidation tank 2, and electrodeionization tank 3, the use of chemical agents is reduced, and secondary pollution to the environment is minimized. At the same time, by increasing the concentration ratio, the amount of water replenishment and drainage is significantly reduced, thus lowering energy consumption. It also effectively inhibits scaling and corrosion in the circulating water system, maintains the high efficiency of heat transfer in the heat exchanger, and improves the overall operating efficiency and stability of the waste heat power generation system. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, but such modifications, substitutions, and variations are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A cement waste heat power generation device capable of increasing the concentration of circulating water, comprising an electrocoagulation tank (1), characterized in that: An electro-oxidation tank (2) is provided on one side of the electro-coagulation tank (1), and an electro-deionization tank (3) is provided on one side of the electro-oxidation tank (2). Mounting frames A (4), B (5), and C (6) are respectively provided at the top of the electro-coagulation tank (1), the electro-oxidation tank (2), and the electro-deionization tank (3). An electrode plate (7) is installed at the bottom of the mounting frame A (4), an electrode assembly A (8) is installed at the bottom of the mounting frame B (5), and an electrode assembly B (9) is installed at the bottom of the mounting frame C (6). A stirrer (11) is provided on the inner side of the electro-coagulation tank (1) between the two mounting frames A (4), and a selective permeable membrane (10) is provided inside the electro-deionization tank (3) between the two mounting frames C (6).

2. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: One end of each of the electrode plate (7), electrode assembly A (8) and electrode assembly B (9) is connected to a wire (12), and the wire (12) passes through the mounting bracket A (4), mounting bracket B (5) and mounting bracket C (6) respectively.

3. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: Water pumps (15) are installed on the support plates on one side of the electrocoagulation tank (1) and the electrooxidation tank (2). The water pumps (15) are connected to the electrocoagulation tank (1) and the electrooxidation tank (2) and to the electrooxidation tank (2) and the electrodeionization tank (3) by connecting pipes (16).

4. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: The electrode assembly A (8) consists of an anode A and a cathode A, and the anode A and cathode A are respectively installed at the bottom of the mounting bracket B (5).

5. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: The electrode assembly B (9) consists of an anode B and a cathode B, and the anode B and cathode B are respectively mounted on the bottom end of the mounting bracket C (6).

6. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: An inlet pipe (14) is provided at the bottom of one side of the electrocoagulation tank (1), and an outlet pipe is provided at the bottom of one side of the electrodeionization tank (3).

7. A cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: The stirrer (11) consists of a drive motor, a horizontal plate, and a stirring shaft.

8. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 1, characterized in that: The inner side of the electrodeionization cell (3) is provided with positioning mechanisms (13) at both ends of the selective permeable membrane (10). The positioning mechanism (13) consists of a positioning frame (1301), a positioning plate (1302), a support shaft (1303), and an elastic pad (1304).

9. The cement waste heat power generation device capable of increasing circulating water concentration according to claim 8, characterized in that: The positioning frame (1301) is symmetrically arranged inside the electrodeionization cell (3), the positioning plate (1302) is rotatably connected to the top of the electrodeionization cell (3) through the support shaft (1303), and the elastic pad (1304) is arranged at one end of the positioning plate (1302) near the selective permeable membrane (10).

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