Condensed water recycling treatment equipment used in cooperation with condenser

Abstract

Condensed water recycling treatment equipment used in cooperation with a condenser comprises a buffer tank, a treatment tank and a heat exchange jacket used for being arranged on a water supply pipeline of a steam turbine boiler in a sleeving mode, and a heat exchange gap is reserved between the heat exchange jacket and the water supply pipeline of the steam turbine boiler; a water inlet used for being communicated with a condenser condensed water output pipeline is formed in the bottom of one side of the heat exchange jacket, a water outlet used for being communicated with a buffer tank is formed in the top of the other side of the heat exchange jacket, a filter screen is installed at the position, at the water outlet, of the heat exchange jacket, and a first stirring device is further installed at the bottom of the heat exchange jacket. The treatment tank is communicated with the buffer tank through a water inlet pipeline, the treatment tank is communicated with a steam turbine boiler water supply pipeline through a water outlet pipeline, and a second stirring device and a dosing pipeline are further mounted on the treatment tank. According to the utility model, the treatment flow of the condensed water can be optimized, the treatment efficiency is improved, and the treatment cost is reduced, so that efficient and low-cost cyclic utilization of the condensed water is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of condensate water reuse treatment of condensers, in particular to a condensate water reuse treatment device for use in conjunction with a condenser. Background Technique

[0002] In the current steam turbine operation system, the condenser plays a crucial role. Its core function is to convert the high-temperature steam after the steam turbine completes its work into condensate water. This process not only effectively recovers heat but also promotes the recycling of water resources.

[0003] However, since the temperature of the condensate water is relatively high when it is just discharged from the condenser, it is often difficult to achieve an ideal purification effect through direct chemical treatment. This is because the high-temperature environment may interfere with the activity of chemical agents, affecting the reaction efficiency between them and pollutants, thereby limiting the treatment effect.

[0004] Traditional practices usually involve waiting for the condensate water to cool naturally to an appropriate temperature or introducing additional cooling equipment for rapid cooling, followed by chemical treatment. However, both of these methods have obvious drawbacks: natural cooling takes a long time, affecting the timeliness of condensate water recycling; while using cooling equipment increases additional energy consumption and costs, which is not conducive to improving the overall economic efficiency. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide, in view of the deficiencies of the prior art, a condensate water reuse treatment device for use in conjunction with a condenser that can optimize the treatment process of condensate water, improve the treatment efficiency, and reduce the treatment cost to achieve the high-efficiency and low-cost recycling of condensate water.

[0006] The technical problem to be solved by the utility model is realized through the following technical solutions. The utility model is a condensate water reuse treatment device for use in conjunction with a condenser, including a buffer tank, a treatment tank, and a heat exchange jacket for sleeving on the steam turbine boiler feed water pipeline, with a heat exchange gap left between the heat exchange jacket and the steam turbine boiler feed water pipeline; at the bottom on one side of the heat exchange jacket, there is an inlet for connecting with the condensate water output pipeline of the condenser, at the top on the other side of the heat exchange jacket, there is an outlet for connecting with the buffer tank, a filter screen is installed on the heat exchange jacket at the outlet, and a first stirring device is also installed at the bottom of the heat exchange jacket; the treatment tank is connected to the buffer tank through a water inlet pipeline, a water inlet control valve is installed on the water inlet pipeline, the treatment tank is connected to the steam turbine boiler feed water pipeline through a water outlet pipeline, a water outlet pump and a water outlet control valve are installed on the water outlet pipeline, and a second stirring device and a chemical dosing pipeline are also installed on the treatment tank.

[0007] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, heat exchange fins are also installed on the steam turbine boiler feed water pipe at the heat exchange gap.

[0008] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, a flushing pipe is installed at the top of the heat exchange jacket, a flushing control valve is installed on the flushing pipe, a sewage discharge pipe is also installed at the bottom of the heat exchange jacket, and a sewage discharge control valve is installed on the sewage discharge pipe.

[0009] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, a check valve is also installed at the connection of the water outlet pipe and the steam turbine boiler feed water pipe.

[0010] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, a check valve is also installed in the heat exchange jacket at the water inlet.

[0011] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, the first stirring device includes a first stirring shaft installed at the bottom of the heat exchange jacket and a first driving motor. The top of the first stirring shaft is arranged inside the heat exchange jacket and is provided with stirring rods. The bottom of the first stirring shaft is arranged outside the heat exchange jacket and is in transmission connection with the motor shaft of the first driving motor through transmission gears. A rotary dynamic seal is also installed at the connection of the first stirring shaft and the heat exchange jacket.

[0012] The technical problem to be solved by the present utility model can also be further realized by the following technical solution. For the condensate water reuse treatment device used in conjunction with a condenser described above, the second stirring device includes a second stirring shaft installed at the top of the treatment tank through bearings and bearing seats and a second driving motor for driving the second stirring shaft to rotate. The bottom of the second stirring shaft is arranged inside the treatment tank and is provided with stirring paddles.

[0013] Compared with the prior art, the beneficial effects of the present utility model:

[0014] 1. Efficient heat energy recovery: By setting up a heat exchange jacket on the feed water pipeline of the steam turbine boiler and using the condensate water output from the condenser as the heat source, it helps to reduce the energy consumption during the boiler heating process, achieve efficient heat energy recovery. Moreover, this design can reduce the temperature of the condensate water, making it convenient for subsequent direct chemical treatment and helping to improve the treatment efficiency of the condensate water;

[0015] 2. Water quality purification and protection: The filter screen at the outlet of the heat exchange jacket effectively intercepts impurities and particulate matters in the condensate water, reducing the burden on the subsequent treatment system. At the same time, it protects the boiler feed water pipeline from pollution and extends the service life of the equipment;

[0016] 3. Buffer and water quality stabilization: The setting of the buffer tank plays a role in buffering and stabilizing the water quality, capable of regulating the fluctuations in the condensate water flow rate, ensuring that the water quality entering the treatment tank is more stable, and providing good conditions for subsequent treatment;

[0017] 4. Flexible treatment and dosing control: The second stirring device in the treatment tank ensures the uniform mixing of treatment chemicals, improving the treatment efficiency. At the same time, different types of treatment chemicals can be flexibly added through the dosing pipeline to meet the treatment requirements of different water qualities, enhancing the adaptability and flexibility of the equipment;

[0018] 5. Environmental protection and economy: By recycling and utilizing the condensate water of the condenser, wastewater discharge is reduced, meeting environmental protection requirements. At the same time, the efficient operation of this equipment reduces the boiler operation cost and improves the overall economic efficiency. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of the present utility model. Detailed Embodiments

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Refer to Figure 1A condensate recycling and treatment device for use with a condenser includes a buffer tank 1, a treatment tank 2, and a heat exchange jacket 3 for being mounted on a steam turbine boiler feed water pipe 4. A heat exchange gap 5 is left between the heat exchange jacket 3 and the steam turbine boiler feed water pipe 4, so that condensate enters the heat exchange jacket 3 from the condenser through the water inlet, exchanges heat with the steam turbine boiler feed water pipe 4 in the heat exchange gap 5, and after the temperature is reduced, enters the buffer tank 1 through the water outlet. After being temporarily stored in the buffer tank 1, it enters the treatment tank 2 through the water inlet pipe 12. A chemical is added to the treatment tank 2 for water quality treatment. The treated water is sent to the steam turbine boiler feed water pipe 4 through the water outlet pipe 13 and the water outlet pump for reuse.

[0022] Specifically, a water inlet for communicating with the condensate output pipe 6 of the condenser is provided at the bottom of one side of the heat exchange jacket 3, so that the condensate in the condenser is input into the heat exchange jacket 3 from the condenser. In order to prevent the condensate from flowing back, a one-way valve is also installed in the heat exchange jacket 3 at the water inlet, and a water outlet for communicating with the buffer tank 1 is provided at the top of the other side of the heat exchange jacket 3, so that the condensate in the heat exchange jacket 3 is output into the buffer tank 1. A filter screen 7 is installed on the heat exchange jacket 3 at the water outlet to filter the output condensate to remove suspended matter and impurities in the water. A filter screen 7 is also installed at the bottom of the heat exchange jacket 3. a stirring device 8 for stirring the condensate in the heat exchange jacket 3, enhancing the fluidity of the condensate, and facilitating comprehensive, uniform, and sufficient heat exchange between the condensate and the feed water in the steam turbine boiler feed water pipe 4. Preferably, the first stirring device 8 comprises a first stirring shaft and a first drive motor installed at the bottom of the heat exchange jacket 3. The top of the first stirring shaft is arranged in the heat exchange jacket 3 and is equipped with a stirring rod. The bottom of the first stirring shaft is arranged outside the heat exchange jacket 3 and is connected to the motor shaft of the first drive motor through a transmission gear. A rotary dynamic seal is also installed at the junction of the first stirring shaft and the heat exchange jacket 3.

[0023] The treatment tank 2 is connected to the buffer tank 1 through an inlet pipe 12, so that the condensate in the buffer tank 1 can be input into the treatment tank 2. A water inlet control valve is installed on the inlet pipe 12. The treatment tank 2 is connected to the steam turbine boiler feed water pipe 4 through an outlet pipe 13, so that the treated condensate in the treatment tank 2 can be returned to the steam turbine boiler feed water pipe 4 for recycling. An outlet pump and an outlet control valve are installed on the outlet pipe 13. In order to prevent the boiler feed water from entering the outlet pipe 13, a one-way valve is also installed at the connection between the outlet pipe 13 and the steam turbine boiler feed water pipe 4.

[0024] A second stirring device 14 and a dosing pipe 15 are also installed on the treatment tank 2. The setting of the dosing pipe 15 is convenient for adding chemical agents (such as deoxidizers) into the treatment tank 2 as needed to ensure the discharge effect of the condensate water. The second stirring device 14 is used to ensure that the agents in the treatment tank 2 are fully mixed with the condensate water to improve the water quality treatment effect. Preferably, the second stirring device 14 includes a second stirring shaft installed on the top of the treatment tank 2 through a bearing and a bearing seat and a second drive motor for driving the second stirring shaft to rotate. The bottom of the second stirring shaft is arranged in the treatment tank 2 and is equipped with a stirring paddle. The top of the second stirring shaft is connected to the motor shaft of the second drive motor through a transmission gear.

[0025] In actual use, in order to further improve the heat exchange efficiency, heat exchange fins 11 are also installed on the turbine boiler feed water pipe 4 at the heat exchange gap 5; in order to regularly clean the inside of the heat exchange jacket 3, a flushing pipe 9 is installed on the top of the heat exchange jacket 3, and a flushing control valve is installed on the flushing pipe 9; a sewage pipe 10 is also installed at the bottom of the heat exchange jacket 3, and a sewage control valve is installed on the sewage pipe 10.

[0026] The working process of this utility model:

[0027] 1. Condensate collection and preliminary treatment

[0028] The condensed water flows out from the condensate output pipe of the condenser and enters the heat exchange jacket 3 through the water inlet provided at the bottom of one side of the heat exchange jacket 3;

[0029] In the heat exchange jacket 3, heat exchange is performed between the condensate and the steam turbine boiler feed water pipe 4. Here, the design of the heat exchange fins 11 and the first stirring device 8 enhances the heat exchange efficiency, thereby reducing the temperature of the condensate.

[0030] The condensed water after heat exchange passes through the top water outlet on the other side of the heat exchange jacket 3, and then passes through the filter screen 7 installed there to preliminarily remove suspended matter and impurities in the water;

[0031] The condensate after preliminary treatment enters the buffer tank 1 for temporary storage. The buffer tank 1 is designed to balance the flow, stabilize the pressure, and provide a buffer space for subsequent water quality treatment;

[0032] 2. Water treatment

[0033] The condensate in the buffer tank 1 enters the treatment tank 2 through the water inlet pipe 12. A water inlet control valve is installed on the water inlet pipe 12 to adjust the amount of water entering the treatment tank 2.

[0034] In the treatment tank 2, the medicament is fully mixed with the condensate water by the stirring paddle of the second stirring device 14. The dosing amount of the medicament is precisely controlled by the metering pump on the dosing pipeline 15 and automatically adjusted according to the water quality monitoring results;

[0035] For the condensate water after being treated with the medicament, substances such as suspended solids, colloids, corrosion products, and oils are effectively removed, and the water quality is improved;

[0036] III. Reuse and discharge

[0037] The treated water is pumped through the outlet pipeline 13 and the outlet water pump to the steam turbine boiler feed water pipeline 4 for reuse. An outlet control valve and a check valve are installed on the outlet pipeline 13 to ensure the correct water flow direction and controllable flow rate;

[0038] Meanwhile, a water quality monitoring device is also installed at the connection between the outlet pipeline 13 and the steam turbine boiler feed water pipeline 4 to monitor in real time whether the quality of the treated water meets the reuse requirements;

[0039] A drain pipeline 10 and a drain control valve are also installed at the bottom of the heat exchange jacket 3. When it is necessary to clean the heat exchange jacket 3 or discharge the accumulated impurities, the drain control valve can be opened for draining operation;

[0040] In addition, a flushing pipeline 9 and a flushing control valve are installed at the top of the heat exchange jacket 3. By periodically flushing the heat exchange jacket 3 through the flushing pipeline 9, the dirt and impurities attached to the heat exchange fins 11 and the pipe wall can be further removed, maintaining the heat exchange efficiency.

Claims

1. A condensate water reuse treatment device for use in conjunction with a condenser, characterized in that: It includes a buffer tank, a treatment tank, and a heat exchange jacket for being sleeved on the feed water pipeline of a steam turbine boiler, with a heat exchange gap left between the heat exchange jacket and the feed water pipeline of the steam turbine boiler; an inlet for communicating with the condensate output pipeline of a condenser is arranged at the bottom on one side of the heat exchange jacket, an outlet for communicating with the buffer tank is arranged at the top on the other side of the heat exchange jacket, a filter screen is installed on the heat exchange jacket at the outlet, and a first stirring device is also installed at the bottom of the heat exchange jacket; the treatment tank is communicated with the buffer tank through a water inlet pipeline, a water inlet control valve is installed on the water inlet pipeline, the treatment tank is communicated with the feed water pipeline of the steam turbine boiler through a water outlet pipeline, a water outlet pump and a water outlet control valve are installed on the water outlet pipeline, and a second stirring device and a chemical addition pipeline are also installed on the treatment tank.

2. The condensate water reuse treatment equipment for use in conjunction with a condenser according to claim 1, characterized in that: Heat exchange fins are also installed on the feed water pipeline of the steam turbine boiler at the heat exchange gap.

3. The condensate water reuse treatment device for use in conjunction with a condenser according to claim 1 or 2, characterized in that: A flushing pipeline is installed at the top of the heat exchange jacket, a flushing control valve is installed on the flushing pipeline, a sewage discharge pipeline is also installed at the bottom of the heat exchange jacket, and a sewage discharge control valve is installed on the sewage discharge pipeline.

4. The condensate water reuse treatment equipment for use in conjunction with a condenser according to claim 1, characterized in that: A check valve is also installed at the connection between the water outlet pipeline and the feed water pipeline of the steam turbine boiler.

5. The condensate water reuse treatment device for use in conjunction with a condenser according to claim 1 or 4, characterized in that: A check valve is also installed inside the heat exchange jacket at the inlet.

6. The condensate water reuse treatment device for use in conjunction with a condenser according to claim 1, characterized in that: The first stirring device includes a first stirring shaft installed at the bottom of the heat exchange jacket and a first driving motor, the top of the first stirring shaft is arranged inside the heat exchange jacket and is installed with stirring rods, the bottom of the first stirring shaft is arranged outside the heat exchange jacket and is in transmission connection with the motor shaft of the first driving motor through transmission gears, and a rotary dynamic seal is also installed at the connection between the first stirring shaft and the heat exchange jacket.

7. The condensate water reuse treatment device for use in conjunction with a condenser according to claim 1 or 6, characterized in that: The second stirring device includes a second stirring shaft installed at the top of the treatment tank through bearings and bearing seats and a second driving motor for driving the second stirring shaft to rotate, the bottom of the second stirring shaft is arranged inside the treatment tank and is installed with stirring paddles.

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