A high-quality turbine fluid recovery and treatment device

Abstract

This utility model discloses a high-quality turbine liquid recovery and treatment device, relating to the field of industrial water treatment technology. The device includes a reducer, a flow meter, a check valve, a first iron removal filter, a second iron removal filter, a first low-pressure deaerator, a second low-pressure deaerator, and a third low-pressure deaerator. One end of the reducer is connected to the high-quality turbine condensate outlet, and the other end is connected sequentially to the flow meter, the check valve, and the first and second iron removal filters (connected in parallel) via a pipeline. The filtered liquid is transported through pipelines to the first, second, and third low-pressure deaerators for deoxygenation treatment. This utility model recovers high-quality turbine condensate to the low-pressure deaerator through pipelines and an iron removal filtration system, achieving efficient recovery and utilization of waste heat and water resources. While ensuring safe system operation, it achieves energy saving, water saving, and consumption reduction.

Description

Technical Field

[0001] This utility model relates to the field of industrial water treatment technology, and in particular to a high-quality turbine liquid recovery and treatment device. Background Technology

[0002] In industries such as petrochemicals, power, and chemicals, turbine units generate a large amount of high-quality steam condensate during operation. This condensate is pure and has a high temperature (usually above 100°C), making it a valuable secondary energy resource. In traditional processes, this condensate is often used directly as flushing water for mechanical seals of pumps and is then discharged into the wastewater system, resulting in a waste of a large amount of heat energy and high-quality water resources. This "high-quality, low-use" treatment method not only increases the demand for fresh water replenishment but also increases the wastewater treatment load, which is inconsistent with the current technological orientation of energy conservation, emission reduction, and green development.

[0003] Existing systems generally lack a mechanism for the graded utilization and recycling of turbine condensate. In particular, when the condensate contains trace amounts of rust or metal particles, there is a tendency to discharge it directly to avoid clogging or corrosion of downstream equipment, which further exacerbates the waste of resources. Although some companies have tried to reuse the condensate in the boiler feedwater system, due to the lack of effective iron removal, purification and stable conveying devices, there are problems such as unstable water quality, easy scaling and impaired deoxygenation, making it difficult to achieve safe and continuous operation. Utility Model Content

[0004] This utility model provides a high-quality turbine fluid recovery and treatment device, including a reducer, a flow meter, a check valve, a first iron removal filter, a second iron removal filter, a first low-pressure deaerator, a second low-pressure deaerator, and a third low-pressure deaerator.

[0005] One end of the reducer is connected to the high-quality turbine condensate outlet, and the other end is connected in sequence to a flow meter, a check valve, and a first and second iron removal filter arranged in parallel through a pipeline. The filtered liquid is then transported through pipelines to a first low-pressure deaerator, a second low-pressure deaerator, and a third low-pressure deaerator for deoxygenation treatment.

[0006] Preferably, the first iron removal filter is provided with an air vent on top, and the second iron removal filter is provided with an air vent on top. Automatic air vent valves are installed on the air vents and the air vent valves to automatically discharge internal air when the system is started.

[0007] Preferably, both the first and second iron removal filters are provided with a drain outlet, which is connected to a main drain pipe. The main drain pipe is provided with a drain valve for centralized discharge of system sediments.

[0008] Preferably, the first and second iron removal filters are provided with inlet valves on their inlet branches and outlet valves on their outlet branches.

[0009] Preferably, a sampling valve is provided on each branch before the inlet valve and after the outlet valve for collecting water samples before and after filtration.

[0010] Preferably, an isolation main valve is provided on the pipeline between the reducer and the high-quality turbine condensate outlet to cut off the incoming liquid during system maintenance.

[0011] Preferably, a bypass pipe is provided in parallel between the upstream main pipe and the downstream main pipe of the check valve, and a shut-off valve is provided on the bypass pipe.

[0012] Preferably, a filter housing is connected to the pipe upstream of the flow meter, and a filter screen is installed inside the filter housing.

[0013] Preferably, the pipe is made of stainless steel and is supported by pipe supports, which are fixed to a concrete foundation.

[0014] Preferably, the flow meter is an electromagnetic flow meter, and its signal output end is connected to the monitoring system in the central control room via a cable to realize real-time flow monitoring and recording.

[0015] This utility model provides a high-quality turbine fluid recovery and treatment device, which, compared with the prior art, offers the following advantages:

[0016] This invention guides high-quality turbine condensate to an iron removal filter for purification via a pipeline system, and then transports it to a low-pressure deaerator for thermal deoxygenation. This achieves efficient recovery and resource utilization of the high-quality turbine condensate. This technical solution not only effectively removes iron impurities from the condensate, ensuring the safe and stable operation of subsequent equipment, but also fully recovers waste heat and high-quality water resources, avoiding energy waste and increased water consumption caused by direct discharge into the sewage system. The device has a reasonable structure and reliable operation, and can be widely applied to condensate recovery systems in industries such as petrochemicals, power, and chemicals. It achieves comprehensive benefits of energy saving, water saving, and reduced consumption, and has good economic value and environmental significance. 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 2This is a partial schematic diagram of the structure of the first iron removal filter according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the first and second iron removal filters connected in parallel according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structural connections of the main sewage pipe and other components in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the bypass pipe and other structures in an embodiment of the present utility model;

[0023] Figure 6 This is a cross-sectional schematic diagram of the filter shell structure according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the pipe support structure according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 1. Reducer; 2. Flow meter; 3. Check valve; 4. First iron removal filter; 5. Exhaust port one; 6. Second iron removal filter; 7. Exhaust port two; 8. First low-pressure deaerator; 9. Second low-pressure deaerator; 10. Third low-pressure deaerator; 11. Sewage outlet; 12. Inlet valve; 13. Outlet valve; 14. Sampling valve; 15. Automatic exhaust valve; 16. Main sewage discharge pipe; 17. Sewage discharge valve; 18. Isolation main valve; 19. Bypass pipe; 20. Shut-off valve; 21. Filter housing; 22. Filter screen; 23. Pipe support. Detailed Implementation

[0027] 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.

[0028] Please refer to Figures 1-7 This utility model provides a high-quality turbine liquid recovery and treatment device, including a reducer 1, a flow meter 2, a check valve 3, a first iron removal filter 4, a second iron removal filter 6, a first low-pressure deaerator 8, a second low-pressure deaerator 9, and a third low-pressure deaerator 10.

[0029] A reducer 1 is connected at the condensate outlet to achieve a smooth transition between different pipe diameters, ensuring that the fluid enters the recovery system smoothly. An isolation main valve 18 is installed on the main pipeline between the reducer 1 and the condensate outlet. The isolation main valve 18 can quickly cut off the incoming liquid during system maintenance or emergency, ensuring operational safety.

[0030] After the condensate enters the main pipeline through the reducer 1, it first flows through the filter housing 21. The filter housing 21 is a cylindrical structure that is connected to the main pipeline. Inside it is a filter screen 22, which is used to intercept large particulate impurities such as pipe rust and welding slag that may be carried in the condensate, thus playing a primary protection role and preventing the subsequent flow meter 2 from being contaminated or damaged.

[0031] Subsequently, the condensate enters the pipe section where the flow meter 2 is located. In this embodiment, the flow meter 2 is an electromagnetic flow meter, which has the advantages of high measurement accuracy, low pressure loss and corrosion resistance. The flow meter 2 monitors the instantaneous flow rate and cumulative flow rate of the condensate in real time, and transmits the 4-20mA standard signal to the monitoring system in the central control room through a cable to realize remote data acquisition, real-time monitoring and operation recording, which facilitates process management and energy consumption analysis.

[0032] To prevent backflow of the medium in the system and ensure unidirectional flow, a check valve 3 is installed downstream of the flow meter 2. This device has a bypass pipe 19 connected in parallel between the upstream and downstream main pipes of the check valve 3. A shut-off valve 20 is installed on the bypass pipe 19. When the check valve 3 needs maintenance or malfunctions, the main valve can be closed and the shut-off valve 20 on the bypass pipe 19 can be opened, allowing the condensate to bypass the check valve 3 and continue to be transported, thus achieving maintenance without shutting down the system and improving the continuity and reliability of system operation.

[0033] After passing through check valve 3, the condensate enters the first iron removal filter 4 and the second iron removal filter 6. The first iron removal filter 4 and the second iron removal filter 6 are connected in parallel. The two filters can operate independently. Each filter has an inlet valve 12 on its inlet branch and an outlet valve 13 on its outlet branch. By switching the valves, the isolation, backwashing or filter replacement of a single filter can be achieved without affecting the overall operation of the system.

[0034] like Figure 2 As shown, to facilitate water quality monitoring, sampling valves 14 are installed before the inlet valve 12 and after the outlet valve 13 of each filter. Operators can collect water samples before and after filtration through the sampling valves 14 to test indicators such as iron ion content and turbidity, evaluate the filtration effect, and ensure that the effluent water quality meets the inlet water requirements of the low-pressure deaerator.

[0035] like Figure 3 and Figure 4 As shown, during system startup or operation, in order to prevent gas accumulation and the formation of "air blockage" that affects flow efficiency, each iron removal filter is equipped with a venting structure at the top: the first iron removal filter 4 has a vent 1 5 at the top, and the second iron removal filter 6 has a vent 2 7 at the top. An automatic air vent valve 15 is installed on the vent, which can automatically discharge the internal air when the system is filled with water, without the need for manual intervention.

[0036] During operation, rust, sediment and other impurities trapped by the first iron removal filter 4 and the second iron removal filter 6 will accumulate at the bottom. Therefore, the first iron removal filter 4 and the second iron removal filter 6 are equipped with drain ports 11 at the bottom. Multiple drain ports 11 are connected to the main drain pipe 16 through pipes, and a drain valve 17 is installed on the main pipe, which can be opened periodically for centralized drainage to remove system sediment and maintain filter processing efficiency.

[0037] The high-quality turbine condensate, after filtration and purification, is transported through the main pipeline to the subsequent first low-pressure deaerator 8, second low-pressure deaerator 9, and third low-pressure deaerator 10. The three devices operate in parallel and can be flexibly started and stopped according to the load, improving the system adaptability. After the condensate is atomized by the deaerator nozzles, it comes into countercurrent contact with low-pressure steam, removing dissolved oxygen and non-condensable gases from the water through thermal deaeration, generating qualified deoxygenated water for use in boiler feedwater or other process systems, realizing the cascade utilization of energy.

[0038] The entire piping system is made of stainless steel, which has excellent corrosion resistance and high temperature strength, making it suitable for conveying high-quality condensate. The pipes are supported and fixed by multiple pipe supports 23, which are installed on concrete foundations or steel frame structures.

[0039] In summary, the working principle of the high-quality turbine liquid recovery and treatment device of this utility model embodiment is as follows: the condensate enters the recovery system from the turbine unit outlet through the reducer 1. First, the on / off state is controlled by the isolation main valve 18, and then it undergoes primary filtration through the filter screen 22 in the filter shell 21. Subsequently, the flow rate is monitored in real time by the electromagnetic flow meter 2 and the signal is transmitted to the central control room. The fluid is prevented from flowing back by the check valve 3. If necessary, it can bypass through the bypass pipe 19 and the shut-off valve 20 and enter the first iron removal filter 4 and the second iron removal filter 6 set in parallel for deep iron removal. During the filtration process, air is discharged through the automatic exhaust valve 15. Sludge is discharged periodically through the sewage discharge main pipe 16 and the sewage discharge valve 17. The operator can use the sampling valve 14 to collect water samples to monitor the water quality. The purified condensate is transported to the first low-pressure deaerator 8, the second low-pressure deaerator 9 and the third low-pressure deaerator 10 for thermal deoxygenation, and finally produces qualified deoxygenated water.

[0040] 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 high-quality turbine fluid recovery and treatment device, characterized in that: It includes reducer (1), flow meter (2), check valve (3), first iron removal filter (4), second iron removal filter (6), first low-pressure deaerator (8), second low-pressure deaerator (9) and third low-pressure deaerator (10); One end of the reducer (1) is connected to the high-quality turbine condensate outlet, and the other end is connected in sequence to the flow meter (2), check valve (3), first iron removal filter (4) and second iron removal filter (6) set in parallel through the pipeline. The filtered liquid is transported through the pipeline to the first low-pressure deaerator (8), the second low-pressure deaerator (9) and the third low-pressure deaerator (10) for deoxygenation treatment.

2. The high-quality turbine fluid recovery and treatment device according to claim 1, characterized in that: The first iron removal filter (4) is provided with an air vent (5) on top, and the second iron removal filter (6) is provided with an air vent (7) on top. Automatic air vent valves (15) are installed on the air vent (5) and the air vent (7) to automatically discharge internal air when the system is started.

3. The high-quality turbine fluid recovery and treatment device according to claim 2, characterized in that: Both the first iron removal filter (4) and the second iron removal filter (6) are provided with a drain port (11), the drain port (11) is connected to a main drain pipe (16), and the main drain pipe (16) is provided with a drain valve (17) for centralized discharge of system sediments.

4. The high-quality turbine fluid recovery and treatment device according to claim 3, characterized in that: The first iron removal filter (4) and the second iron removal filter (6) are provided with an inlet valve (12) on the liquid inlet branch and an outlet valve (13) on the liquid outlet branch.

5. The high-quality turbine fluid recovery and treatment device according to claim 4, characterized in that: Sampling valves (14) are provided on the branches before each inlet valve (12) and after each outlet valve (13) for collecting water samples before and after filtration.

6. The high-quality turbine fluid recovery and treatment device according to claim 1, characterized in that: An isolation main valve (18) is installed on the pipeline between the reducer (1) and the high-quality turbine condensate outlet to cut off the incoming liquid during system maintenance.

7. The high-quality turbine fluid recovery and treatment device according to claim 6, characterized in that: A bypass pipe (19) is connected in parallel between the upstream main pipe and the downstream main pipe of the check valve (3), and a shut-off valve (20) is provided on the bypass pipe (19).

8. The high-quality turbine fluid recovery and treatment device according to claim 1, characterized in that: A filter housing (21) is connected to the pipe upstream of the flow meter (2), and a filter screen (22) is installed inside the filter housing (21).

9. The high-quality turbine fluid recovery and treatment device according to claim 8, characterized in that: The pipe is made of stainless steel and is supported by a pipe bracket (23), which is fixed to a concrete foundation.

10. The high-quality turbine fluid recovery and treatment device according to claim 9, characterized in that: The flow meter (2) is an electromagnetic flow meter, and its signal output end is connected to the monitoring system in the central control room via a cable to realize real-time flow monitoring and recording.

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