Plate heat exchanger device based on condensate and single water treatment

Abstract

The utility model relates to a kind of plate heat exchanger device based on condensate and single water treatment, belong to condensate and single water treatment equipment technical field, including pelletizer, the pelletizer lower end is equipped with with pelletizer phase pipeline intercommunication's slice collection tank, the slice collection tank outside is equipped with plate heat exchanger component, the slice collection tank lower part and plate heat exchanger component between, slice collection tank lower part and pelletizer between are equipped with single water recovery pipe, the single water recovery pipe is equipped with single water recovery pump on, the slice collection tank lower end is equipped with slice extraction delivery pipe, the slice extraction delivery pipe is equipped with slice delivery pump on.With compact structure, high efficiency, energy saving and emission reduction and the characteristics of good operating stability. Through plate heat exchanger, heat recovery between single water and process condensate is realized, while completing the preliminary delivery and extraction preparation to slice.

Description

Technical Field

[0001] This utility model relates to the technical field of condensate and single-water treatment equipment, specifically to a plate heat exchanger device based on condensate and single-water treatment. Background Technology

[0002] In chemical production processes, the treatment and recovery of medium- and low-pressure steam condensate and water containing monohydrates are crucial. Traditional treatment systems suffer from low heat exchange efficiency, low water resource recovery and utilization rates, and high system energy consumption. Existing heat exchange equipment struggles to meet the demands for high efficiency, energy saving, and stable operation, and cannot adequately adapt to increasingly stringent environmental protection and production efficiency requirements. For example, in existing condensate and monohydrate recovery systems, heat cannot be fully recovered and utilized, leading to energy waste, and the treated water quality often fails to meet ideal reuse standards, impacting production continuity and water resource recycling. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a plate heat exchanger based on condensate and single-aqueous water treatment. It features a compact structure, high efficiency, energy saving and emission reduction, and good operational stability. The plate heat exchanger achieves heat recovery between single-aqueous water and process condensate, while simultaneously completing the initial transport and extraction preparation of the slices.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions:

[0005] A plate heat exchanger based on condensate and single-water treatment includes a pelletizer. The lower end of the pelletizer is provided with a slice collection tank connected to the pelletizer by a pipeline. A plate heat exchanger assembly is provided on the outside of the slice collection tank. A single-water recovery pipe is provided between the lower part of the slice collection tank and the plate heat exchanger assembly, and between the lower part of the slice collection tank and the pelletizer. A single-water recovery pump is provided on the single-water recovery pipe. A slice extraction and conveying pipe is provided at the lower end of the slice collection tank. A slice conveying pump is provided on the slice extraction and conveying pipe.

[0006] Preferably, the outer side of the plate heat exchanger assembly is provided with a medium-low pressure steam condensate pipe, an extraction water recovery pump, and a recycled water tank. A condensate delivery pump is provided between the plate heat exchanger assembly and the medium-low pressure steam condensate pipe. A condensate collection tank is provided between the medium-low pressure steam condensate pipe and the condensate delivery pump. A pressure gauge is provided on the condensate collection tank.

[0007] Preferably, an extraction water collection tank is provided between the plate heat exchanger assembly and the extraction water recovery pump. A thermometer connected to the pipeline is provided between the plate heat exchanger assembly and the extraction water recovery pump, between the condensate collection tank and the plate heat exchanger assembly, on the lower side of the extraction water collection tank, and between the single water recovery pump and the slice collection tank. A flow meter is provided between the plate heat exchanger assembly and the single water recovery pipe, and between the plate heat exchanger assembly and the condensate delivery pump.

[0008] Preferably, one-way valves are provided between the condensate collection tank and the thermometer, between the extraction water collection tank and the thermometer, between the plate heat exchanger assembly and the recycled water tank, between the plate heat exchanger assembly and the flow meter, between the flow meter and the single-water recovery pump, on the slice extraction delivery pipe, between the single-water recovery pump and the thermometer, and between the flow meter and the condensate delivery pump.

[0009] Preferably, the heat exchanger assembly includes a fixed clamping plate and a movable clamping plate. A plurality of heat exchange plates are provided between the fixed clamping plate and the movable clamping plate. Each heat exchange plate has a guide rod at its upper and lower ends that is inserted into the heat exchange plate. The two ends of the guide rod are threadedly fixed to the fixed clamping plate and the movable clamping plate. A plurality of clamping screws are provided on both sides of the fixed clamping plate and the movable clamping plate and are locked with nuts.

[0010] Preferably, the heat exchange plate end face is provided with a sealing gasket, the sealing gasket faces the movable clamping plate, and the inner end face of the fixed clamping plate is provided with a rubber plate.

[0011] This invention can achieve the following effects:

[0012] This invention provides a plate heat exchanger based on condensate and single-aqueous water treatment, which, compared with existing technologies, features a compact structure, high efficiency, energy saving and emission reduction, and good operational stability. The plate heat exchanger achieves heat recovery between single-aqueous water and process condensate, while simultaneously completing the initial transport and extraction preparation of the slices.

[0013] Significant energy savings: This is the greatest value of the system. Instead of using additional steam or electric heaters to heat the condensate, it recovers the waste heat from the condensate that might otherwise be directly discharged or wasted, greatly reducing production energy consumption and operating costs.

[0014] High-efficiency water resource utilization: High-quality steam condensate is recycled to the reuse water pool 8, realizing the recycling of water resources and reducing the consumption of fresh water and wastewater discharge.

[0015] Process optimization: Heating the water containing monomers to a suitable temperature can significantly improve the efficiency of subsequent monomer recovery or wastewater treatment, thereby enhancing the economic benefits of the entire production line.

[0016] The system is safe and reliable: the extensive use of check valves effectively prevents fluid backflow, pump damage, and crosstalk between systems. The dense arrangement of thermometers and flow meters provides operators with comprehensive monitoring data, facilitating timely problem detection and adjustment of operating conditions, ensuring stable system operation.

[0017] Plate heat exchangers are compact in structure, have high heat exchange efficiency, and are easy to maintain.

[0018] Integrated design: It organically integrates multiple functional units such as slice collection, transportation, single water treatment, and condensate recovery, resulting in a compact layout, high degree of automation, and reduced floor space and manual intervention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the plate heat exchanger assembly in this utility model.

[0021] In the diagram: 1. Medium and low pressure steam condensate pipe; 2. Pressure gauge; 3. Condensate collection tank; 4. Extraction water collection tank; 5. Thermometer; 6. Plate heat exchanger assembly; 7. Extraction water recovery pump; 8. Reclaimed water tank; 9. Flow meter; 10. Single water recovery pipe; 11. Check valve; 12. Single water recovery pump; 13. Slice extraction conveying pipe; 14. Slice conveying pump; 15. Slice collection tank; 16. Pelletizer; 17. Condensate conveying pump; 18. Fixed clamping plate; 19. Guide rod; 20. Heat exchange plate; 21. Movable clamping plate; 22. Sealing gasket; 23. Clamping screw; 24. Rubber plate. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0023] Example: Figure 1 and Figure 2As shown, a plate heat exchanger device based on condensate and single-water treatment includes a pelletizer 16. A slice collection tank 15 connected to the lower end of the pelletizer 16 via a pipeline is provided. A plate heat exchanger assembly 6 is provided on the outside of the slice collection tank 15. The plate heat exchanger assembly 6 includes a fixed clamping plate 18 and a movable clamping plate 21. Five heat exchange plates 20 are provided between the fixed clamping plate 18 and the movable clamping plate 21. Guide rods 19 are provided at the upper and lower ends of the heat exchange plates 20 and are inserted into the heat exchange plates 20. The two ends of the guide rods 19 are threadedly fixed to the fixed clamping plate 18 and the movable clamping plate 21. Several clamping screws 23 are provided on both sides of the fixed clamping plate 18 and the movable clamping plate 21, which penetrate the fixed clamping plate 18 and the movable clamping plate 21 and are locked with nuts. A sealing gasket 22 is provided on the end face of the heat exchange plate 20, facing the movable clamping plate 21. A rubber plate 24 is provided on the inner end face of the fixed clamping plate 18. A single water recovery pipe 10 is provided between the lower part of the slice collection tank 15 and the plate heat exchanger assembly 6, and between the lower part of the slice collection tank 15 and the pelletizer 16. A single water recovery pump 12 is provided on the single water recovery pipe 10. A slice extraction conveying pipe 13 is provided at the lower end of the slice collection tank 15. A slice conveying pump 14 is provided on the slice extraction conveying pipe 13. A medium and low pressure steam condensate pipe 1, an extraction water recovery pump 7, and a recycled water tank 8 are respectively provided on the outside of the plate heat exchanger assembly 6. A condensate conveying pump 17 is provided between the plate heat exchanger assembly 6 and the medium and low pressure steam condensate pipe 1. A condensate collection tank 3 is provided between the medium and low pressure steam condensate pipe 1 and the condensate conveying pump 17. A pressure gauge 2 is provided on the condensate collection tank 3. An extraction water collection tank 4 is provided between the plate heat exchanger assembly 6 and the extraction water recovery pump 7. A thermometer 5 connected to the pipeline is provided between the plate heat exchanger assembly 6 and the extraction water recovery pump 7, between the condensate collection tank 3 and the plate heat exchanger assembly 6, on the lower side of the extraction water collection tank 4, and between the single-water recovery pump 12 and the slice collection tank 15. A flow meter 9 is provided between the plate heat exchanger assembly 6 and the single-water recovery pipe 10, and between the plate heat exchanger assembly 6 and the condensate delivery pump 17. A one-way valve 11 is provided between the condensate collection tank 3 and the thermometer 5, between the extraction water collection tank 4 and the thermometer 5, between the plate heat exchanger assembly 6 and the recycled water tank 8, between the plate heat exchanger assembly 6 and the flow meter 9, between the flow meter 9 and the single-water recovery pump 12, on the slice extraction delivery pipe 13, between the single-water recovery pump 12 and the thermometer 5, and between the flow meter 9 and the condensate delivery pump 17.

[0024] The workflow is explained in detail below:

[0025] I. Thermal fluid path (heat release):

[0026] Source: Condensate from medium and low pressure steam in the production unit is collected in condensate collection tank 3 through pipelines.

[0027] Pressurization: The condensate transfer pump 17 starts to extract the condensate from the tank.

[0028] Metering: The flow rate passing through flow meter 9 is recorded.

[0029] Heat exchange (heat release): High-temperature condensate enters the designated flow channel of plate heat exchanger assembly 6. Inside the plate heat exchanger, heat is transferred through metal plates to the low-temperature water-containing condensate on the other side, and the temperature of the condensate itself decreases.

[0030] Destination: The cooled condensate leaves the heat exchanger, flows through the one-way valve 11, and finally enters the recycled water tank 8, where it is reused as high-quality recycled water.

[0031] II. Cold fluid path (heat absorption):

[0032] Source: In the slice collection tank 15, the slices are separated from the water, and the resulting water containing monohydrate accumulates at the bottom of the tank or at a specific location.

[0033] Pressurization: The single-water recovery pump 12 is started to extract the single-water from the tank.

[0034] Metering: The flow rate passing through flow meter 9 is recorded.

[0035] Heat exchange (heat absorption): Low-temperature water containing single-phase water enters another set of channels in plate heat exchanger assembly 6 (alternating with the condensate channels). Inside the plate heat exchanger, it absorbs heat from the high-temperature condensate, and its own temperature rises significantly.

[0036] Destination: The heated water containing monohydrate leaves the heat exchanger and enters the extraction water collection tank 4 for buffering.

[0037] Subsequent processing: Extraction water recovery pump 7 draws the heated monomer-containing water from collection tank 4 and sends it to subsequent monomer recovery units (such as distillation columns) or wastewater treatment units. Heating helps improve monomer recovery efficiency or accelerate biochemical reaction rates.

[0038] III. Slice Processing Path (Related Process): Hot slices from pelletizer 16 fall into slice collection tank 15. Slice delivery pump 14 at the bottom of the tank is started, and the slices are mixed with some water through slice extraction delivery pipe 13 to form a slurry, which is then pumped to the extraction tower for further processing.

[0039] In summary, this plate heat exchanger based on condensate and single-phase water treatment features a compact structure, high efficiency, energy saving and emission reduction, and good operational stability. It achieves heat recovery between single-phase water and process condensate through plate heat exchange, while simultaneously completing the initial transport and extraction preparation of the slices.

[0040] Using a plate heat exchanger as the core, the system couples the treatment of waste heat (steam condensate) and wastewater (including single-phase water) generated during the production process, turning waste into treasure—recovering heat and saving energy, recycling water resources, and optimizing subsequent processes. Meanwhile, through sophisticated instrumentation and valve design, the system's safe, stable, and efficient operation is ensured.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A plate heat exchanger device based on condensate and single water treatment, characterized by: Including the dicer (16), the lower end of the dicer (16) is equipped with the slice collection tank (15) which is communicated with the dicer (16), the outside of the slice collection tank (15) is equipped with the plate heat exchanger assembly (6), the lower part of the slice collection tank (15) and the plate heat exchanger assembly (6) and the lower part of the slice collection tank (15) and the dicer (16) are equipped with the single water recovery pipe (10), the single water recovery pump (12) is equipped on the single water recovery pipe (10), the lower end of the slice collection tank (15) is equipped with the slice extraction delivery pipe (13), the slice delivery pump (14) is equipped on the slice extraction delivery pipe (13).

2. The condensate and single water treatment based plate exchanger device according to claim 1, characterized in that: The outside of the plate heat exchanger assembly (6) is respectively equipped with the low-pressure steam condensate pipe (1), the extraction water recovery pump (7) and the reuse water pool (8), the condensate delivery pump (17) is equipped between the plate heat exchanger assembly (6) and the low-pressure steam condensate pipe (1), the condensate collection tank (3) is equipped between the low-pressure steam condensate pipe (1) and the condensate delivery pump (17), the pressure gauge (2) is equipped on the condensate collection tank (3).

3. The condensate and single water treatment based plate exchanger device according to claim 2, characterized in that: The extraction water collection tank (4) is equipped between the plate heat exchanger assembly (6) and the extraction water recovery pump (7), the thermometer (5) is equipped between the plate heat exchanger assembly (6) and the extraction water recovery pump (7), the condensate collection tank (3) and the plate heat exchanger assembly (6), the lower part side of the extraction water collection tank (4), the single water recovery pump (12) and the slice collection tank (15) are all communicated with the pipeline, the flow meter (9) is equipped between the plate heat exchanger assembly (6) and the single water recovery pipe (10) and between the plate heat exchanger assembly (6) and the condensate delivery pump (17).

4. The condensate and single water treatment based plate exchanger device according to claim 3, characterized in that: The one-way valve (11) is equipped between the condensate collection tank (3) and the thermometer (5), between the extraction water collection tank (4) and the thermometer (5), between the plate heat exchanger assembly (6) and the reuse water pool (8), between the plate heat exchanger assembly (6) and the flow meter (9), between the flow meter (9) and the single water recovery pump (12), on the slice extraction delivery pipe (13), between the single water recovery pump (12) and the thermometer (5), between the flow meter (9) and the condensate delivery pump (17).

5. The condensate and single water treatment based plate exchanger device according to claim 2, characterized in that: The plate heat exchanger assembly (6) includes the fixed clamping plate (18) and the movable clamping plate (21), the heat exchange plate (20) is equipped between the fixed clamping plate (18) and the movable clamping plate (21), the guide rod (19) is embedded and connected on the upper and lower ends of the heat exchange plate (20), the two ends of the guide rod (19) are threadedly connected with the fixed clamping plate (18) and the movable clamping plate (21), the clamping screw rod (23) is equipped between the two sides of the fixed clamping plate (18) and the movable clamping plate (21), and the clamping screw rod (23) penetrates the fixed clamping plate (18) and the movable clamping plate (21) and is locked and connected by the nut.

6. The condensate and single water treatment based plate exchanger device according to claim 5, characterized in that: The end face of the heat exchange plate (20) is equipped with the sealing rubber pad (22), the sealing rubber pad (22) faces the movable clamping plate (21), and the inner side of the fixed clamping plate (18) is equipped with the rubber plate (24).

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