Boiler water replenishing pretreatment device

Abstract

The utility model discloses a boiler water replenishing pretreatment device, and belongs to the technical field of boiler water replenishing treatment equipment. Comprising a water replenishing tank, a sterilization treatment unit, a multi-stage physical filtering unit and a deep treatment unit, the sterilization treatment unit comprises a bactericide adding module and a metering pump; the multi-stage physical filtering unit comprises a multi-medium filter, an activated carbon filter and a precision filter; the deep treatment unit comprises a high-pressure pump and a reverse osmosis membrane assembly; the multi-medium filter, the activated carbon filter, the precision filter, the high-pressure pump and the reverse osmosis membrane assembly are connected through a first pipeline, the water supplementing pool is connected with the multi-medium filter through a second pipeline, the bactericide adding module and the metering pump are connected into the second pipeline through a third pipeline, and a variable frequency water pump is arranged on the second pipeline; the boiler replenishment water pretreatment device can effectively sterilize raw water, remove suspended solids and residual hardness, avoid subsequent pollution of hollow fiber membranes, and improve the quality of boiler replenishment water.

Description

Technical Field

[0001] This utility model belongs to the technical field of boiler feedwater treatment equipment, and in particular relates to a boiler feedwater pretreatment device. Background Technology

[0002] In industrial production, boilers are crucial energy conversion devices, and the quality of boiler feedwater directly affects their safe operation and service life. Untreated or improperly treated feedwater may contain large amounts of microorganisms, suspended solids, hardness ions, and other impurities. These impurities can form scale inside the boiler, corrode boiler pipes, reduce boiler thermal efficiency, and even cause safety accidents.

[0003] Traditional boiler feedwater pretreatment devices suffer from poor treatment efficiency and are unable to effectively remove various impurities from the water. Furthermore, for boiler feedwater purification processes that require subsequent deoxygenation via hollow fiber membranes, traditional pretreatment devices lack effective measures to treat dissolved salts, residual hardness ions, and small-molecule organic matter in the water. This leads to contamination of the hollow fiber membrane, thereby affecting the effectiveness of boiler feedwater treatment.

[0004] Therefore, there is an urgent need for a boiler feedwater pretreatment device that can effectively treat various impurities, dissolved salts, residual hardness ions, and small molecule organic matter in water. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a boiler feedwater pretreatment device that can effectively sterilize raw water, remove suspended solids and residual hardness, avoid subsequent contamination of hollow fiber membranes, and improve the quality of boiler feedwater.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a boiler feedwater pretreatment device, comprising a feedwater tank and a sterilization treatment unit, a multi-stage physical filtration unit and a deep treatment unit connected in sequence.

[0007] The sterilization unit includes a sterilizing agent addition module and a metering pump; the multi-stage physical filtration unit includes a multi-media filter, an activated carbon filter, and a precision filter; and the deep treatment unit includes a high-pressure pump and a reverse osmosis membrane assembly.

[0008] The multi-media filter, the activated carbon filter, the precision filter, the high-pressure pump, and the reverse osmosis membrane assembly are connected through a first pipe. The water replenishment tank and the multi-media filter are connected through a second pipe. The bactericide addition module and the metering pump are connected to the second pipe through a third pipe. A variable frequency water pump is installed on the second pipe.

[0009] Optionally, a water quality testing module is also included, which is disposed at the outlet end of the multi-media filter, the activated carbon filter, the precision filter, and the reverse osmosis membrane assembly.

[0010] Optionally, the bactericide addition module, the metering pump, the water quality detection module, and the variable frequency water pump are all electrically connected to the control module.

[0011] Optionally, the control module can be connected to a remote monitoring center via a wireless communication module.

[0012] Optionally, the multi-media filter is filled with various particle sizes of quartz sand, anthracite, magnetite, manganese sand, ceramic filter media, garnet, and zeolite.

[0013] Optionally, the activated carbon in the activated carbon filter is fruit shell activated carbon or coconut shell activated carbon.

[0014] Optionally, the bactericide added to the bactericide addition module is chlorine dioxide or sodium hypochlorite.

[0015] Optionally, the reverse osmosis membrane assembly is a polyamide composite membrane.

[0016] Optionally, the raw water discharged through the reverse osmosis membrane module is connected to a buffer tank via a fourth pipe.

[0017] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This technical solution adds bactericide to the raw water through a bactericide addition module and a metering pump to kill bacteria and viruses and reduce the risk of biological contamination. Subsequently, the raw water passes through physical filtration equipment such as a multi-media filter to intercept or adsorb impurities, thereby improving its clarity. Then, a high-pressure pump provides pressure to force the water through a reverse osmosis membrane module to remove dissolved salts and other substances, ensuring that the raw water meets the high standards for boiler feedwater. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the boiler feedwater pretreatment device in a preferred embodiment of the present invention;

[0020] The components include: 1. Water replenishment tank; 2. Bactericide addition module; 3. Metering pump; 4. Multi-media filter; 5. Activated carbon filter; 6. Precision filter; 7. High-pressure pump; 8. Reverse osmosis membrane module; 9. First pipeline; 10. Second pipeline; 11. Third pipeline; 12. Variable frequency water pump; 13. Water quality testing module; 14. Fourth pipeline; and 15. Buffer tank. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] like Figure 1 As shown, a boiler feedwater pretreatment device includes a feedwater tank 1 and a sterilization unit, a multi-stage physical filtration unit, and a deep treatment unit connected in sequence; wherein, the sterilization unit includes a bactericide addition module 2 and a metering pump 3; the multi-stage physical filtration unit includes a multi-media filter 4, an activated carbon filter 5, and a precision filter 6; the deep treatment unit includes a high-pressure pump 7 and a reverse osmosis membrane module 8.

[0024] Specifically, the multi-media filter 4, activated carbon filter 5, precision filter 6, high-pressure pump 7, and reverse osmosis membrane module 8 are connected via a first pipe 9. The water replenishment tank 1 is connected to the multi-media filter 4 via a second pipe 10. The bactericide addition module 2 and metering pump 3 are connected to the second pipe 10 via a third pipe 11. A variable frequency water pump 12 is installed on the second pipe 10. The bactericide addition module 2, metering pump 3, multi-media filter 4, activated carbon filter 5, and precision filter 6 are all existing technologies. When the pretreatment device is working, the variable frequency water pump 12 can draw raw water from the water replenishment tank 1 to the multi-media filter 4, activated carbon filter 5, and precision filter 6. Before the raw water enters the multi-media filter 4, activated carbon filter 5, and precision filter 6, the bactericide addition module 2 can add a certain amount of bactericide to the raw water via the metering pump 3 to kill bacteria, viruses, and other microorganisms in the raw water, prevent microorganisms from growing and multiplying in subsequent treatment equipment and pipelines, and reduce the risk of biological contamination. The raw water then enters the multi-media filter 4, activated carbon filter 5, and precision filter 6, where suspended solids, organic matter, colloids, and other impurities are sequentially intercepted or adsorbed to gradually improve water clarity. Finally, the high-pressure pump 7 provides pressure, forcing the raw water through the reverse osmosis membrane module 8. The reverse osmosis membrane module 8 further removes dissolved salts, small-molecule organic matter, and residual hardness from the water, ensuring that the final product water meets the high standards required for boiler feedwater.

[0025] Furthermore, such as Figure 1 As shown, the boiler feedwater pretreatment device also includes a water quality detection module 13, which is located at the outlet of the multi-media filter 4, activated carbon filter 5, precision filter 6, and reverse osmosis membrane assembly 8, so as to detect and provide feedback on the purification progress of the raw water at each stage in real time.

[0026] Furthermore, such as Figure 1 As shown, the disinfectant addition module 2, metering pump 3, water quality detection module 13, and variable frequency water pump 12 are all electrically connected to the control module. The control module can precisely adjust the dosage of disinfectant added by the metering pump 3 based on data and information fed back from the water quality detection module 13. Simultaneously, it can dynamically adjust the speed of the variable frequency water pump 12 to regulate the pressure and flow rate of the raw water in the first pipe 9 and the second pipe 10, ensuring both the disinfection effect and treatment efficiency of the raw water while also saving energy and reducing consumption. Furthermore, the control module can be connected to a remote monitoring center via a wireless communication module, allowing operators to remotely monitor the treatment status of the raw water and issue timely warnings based on adverse signals fed back by the control module.

[0027] The multi-media filter 4 is filled with various particle sizes of quartz sand, anthracite, magnetite, manganese sand, ceramic filter media, garnet, and zeolite.

[0028] In this embodiment, the activated carbon in the activated carbon filter 5 is fruit shell activated carbon or coconut shell activated carbon. Fruit shell activated carbon or coconut shell activated carbon has a relatively large specific surface area and relatively strong adsorption capacity, resulting in better treatment effect.

[0029] Furthermore, in this embodiment, the bactericide added to the bactericide addition module 2 is chlorine dioxide or sodium hypochlorite.

[0030] Furthermore, the reverse osmosis membrane module 8 is a polyamide composite membrane.

[0031] Furthermore, in this technical solution, the raw water discharged through the reverse osmosis membrane module 8 is connected to the buffer water tank 15 through the fourth pipe 14.

[0032] Working Principle: When the pretreatment unit is working, the variable frequency water pump 12 can draw raw water from the makeup water tank 1 to the multi-media filter 4, activated carbon filter 5, and precision filter 6. Before the raw water enters the multi-media filter 4, activated carbon filter 5, and precision filter 6, the bactericide addition module 2 can add a certain amount of bactericide to the raw water through the metering pump 3 to kill bacteria, viruses, and other microorganisms in the raw water, prevent microorganisms from growing and multiplying in subsequent treatment equipment and pipelines, and reduce the risk of biological contamination. The raw water that then enters the multi-media filter 4, activated carbon filter 5, and precision filter 6 can be sequentially intercepted or adsorbed to remove suspended solids, organic matter, colloids, etc., to gradually improve the water clarity. Finally, the high-pressure pump 7 provides pressure to make the raw water pass through the reverse osmosis membrane module 8. The reverse osmosis membrane module 8 can further remove dissolved salts, small molecule organic matter, and residual hardness from the water, ensuring that the final product water meets the high standards required for boiler makeup water.

[0033] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A boiler feedwater pretreatment device, characterized in that: It includes a water replenishment tank (1) and a sterilization treatment unit, a multi-stage physical filtration unit and a deep treatment unit connected in sequence; The sterilization unit includes a bactericide addition module (2) and a metering pump (3); the multi-stage physical filtration unit includes a multi-media filter (4), an activated carbon filter (5), and a precision filter (6); the deep treatment unit includes a high-pressure pump (7) and a reverse osmosis membrane module (8). The multi-media filter (4), the activated carbon filter (5), the precision filter (6), the high-pressure pump (7), and the reverse osmosis membrane assembly (8) are connected through a first pipe (9). The water replenishment tank (1) is connected to the multi-media filter (4) through a second pipe (10). The bactericide addition module (2) and the metering pump (3) are connected to the second pipe (10) through a third pipe (11). A variable frequency water pump (12) is installed on the second pipe (10).

2. The boiler feedwater pretreatment device according to claim 1, characterized in that: It also includes a water quality testing module (13), which is located at the outlet of the multi-media filter (4), the activated carbon filter (5), the precision filter (6), and the reverse osmosis membrane assembly (8).

3. The boiler feedwater pretreatment device according to claim 2, characterized in that: The bactericide addition module (2), the metering pump (3), the water quality detection module (13), and the variable frequency water pump (12) are all electrically connected to the control module.

4. The boiler feedwater pretreatment device according to claim 3, characterized in that: The control module can be connected to a remote monitoring center via a wireless communication module.

5. The boiler feedwater pretreatment device according to claim 1, characterized in that: The multi-media filter (4) is filled with various particle sizes of quartz sand, anthracite, magnetite, manganese sand, ceramic filter media, garnet, and zeolite.

6. The boiler feedwater pretreatment device according to claim 1, characterized in that: The activated carbon in the activated carbon filter (5) is fruit shell activated carbon or coconut shell activated carbon.

7. The boiler feedwater pretreatment device according to claim 1, characterized in that: The bactericide added to the bactericide addition module (2) is filled with chlorine dioxide or sodium hypochlorite.

8. The boiler feedwater pretreatment device according to claim 1, characterized in that: The reverse osmosis membrane module (8) is a polyamide composite membrane.

9. The boiler feedwater pretreatment device according to claim 1, characterized in that: The raw water discharged through the reverse osmosis membrane module (8) is connected to the buffer tank (15) through the fourth pipe (14).

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