A wet desulfurization flue gas condensate water cascade purification collection and reuse system and process

Abstract

This invention provides a wet desulfurization flue gas condensate cascade purification, collection, and reuse system and process, relating to the field of flue gas treatment and water resource recycling technology. It includes: a cooling box, a collection and filtration assembly, a neutralization assembly, a purification assembly, and a monitoring assembly. The cooling box has an internal cavity containing the collection and filtration assembly, which includes a U-shaped collection pipe fixedly installed in the cavity. One end of the collection pipe is fixedly connected to an air inlet pipe, and the other end is fixedly connected to an exhaust pipe. By setting up the collection and filtration assembly and using the U-shaped collection pipe in conjunction with the cooling box, flue gas cooling and condensation are achieved, and desulfurization condensate is efficiently collected by gravity. The filter holes of the interceptor cylinder effectively intercept large particulate impurities such as slurry droplets and dust. The sealing cover and the connecting inclined cylinder are connected by a threaded engagement, facilitating quick disassembly and removal of the interceptor cylinder for cleaning impurities, making operation convenient and improving maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment and water resource recycling technology, and in particular to a wet desulfurization flue gas condensate cascade purification, collection and reuse system and process. Background Technology

[0002] In industrial production, the combustion of fossil fuels in coal-fired boilers and industrial kilns produces large amounts of flue gas containing sulfur dioxide, which must be desulfurized before being emitted. Wet desulfurization has become the mainstream method due to its high efficiency and mature technology. However, the flue gas after desulfurization is saturated with water vapor and carries a large number of slurry droplets, heavy metals, and other impurities. When exposed to low temperatures or forced condensation by a flue gas whitening device, desulfurization condensate is produced. This condensate is highly acidic and contains many impurities. Direct discharge of this condensate not only wastes water resources but also corrodes pipelines and pollutes the environment, failing to meet environmental protection and resource recycling requirements.

[0003] Based on the above, the condensate from existing wet desulfurization processes is usually directly fed into subsequent purification stages after collection. However, in actual purification processes, because the collected condensate is not pre-filtered, large particles of slurry droplets, dust, and other impurities it contains will directly enter core purification units such as neutralization and adsorption. This not only easily causes equipment blockage and wear, but also affects the sufficiency of subsequent reactions and purification effects, resulting in decreased purification efficiency, difficulty in achieving stable water quality standards, and increased equipment maintenance costs and operating burden. Summary of the Invention

[0004] In view of this, the present invention provides a wet desulfurization flue gas condensate cascade purification, collection and reuse system and process, which can achieve flue gas cooling and condensation by setting up collection and filtration components and using U-shaped collection pipes in conjunction with cooling boxes, and efficiently collect desulfurization condensate by gravity; the filter holes of the interception cylinder can effectively intercept large particulate impurities such as slurry droplets and dust, and the sealing cover and connecting inclined cylinder are connected by threaded engagement, which facilitates quick disassembly and extraction of the interception cylinder to clean impurities, making operation convenient and improving maintenance efficiency.

[0005] This invention provides a wet desulfurization flue gas condensate cascade purification, collection and reuse system and process, including: a cooling box, a collection and filtration assembly, a neutralization assembly, a purification assembly and a monitoring assembly; The cooling box has an internal cavity, and a collection and filtration assembly is installed inside the cavity. The collection and filtration assembly includes the following components: The collecting tube is fixedly installed in the inner cavity. The collecting tube has a U-shaped structure. One end of the collecting tube is fixedly connected to the air inlet pipe, and the other end of the collecting tube is fixedly connected to the exhaust pipe. The discharge pipe is fixedly connected to the bottom of the collection pipe. A connecting inclined cylinder is fixedly connected to the middle of the discharge pipe. A guide groove is provided on the inner side wall of the connecting inclined cylinder. A connecting protruding ring is fixedly connected to the outer side of the connecting inclined cylinder. A threaded ring groove is provided on the connecting protruding ring. An interceptor tube is located inside the connecting inclined tube. Positioning protrusions are fixedly connected to both sides of the interceptor tube. A leakage hole is opened at the top of the interceptor tube, and a filter hole is opened at the bottom of the interceptor tube. A sealing cap is located at one end of the connecting inclined cylinder. The sealing cap is provided with a threaded protrusion ring, which engages with a threaded ring groove. A neutralization component is provided on one side of the bottom of the discharge pipe, a monitoring component is provided on one side of the neutralization component, and a purification component is provided between the neutralization component and the monitoring component.

[0006] Furthermore, the neutralization assembly includes a neutralization tank and a drive shaft. The neutralization tank is located on one side of the bottom of the discharge pipe. A connecting support frame is fixedly connected to one side of the neutralization tank. The connecting support frame is fixedly connected to the cooling box through a fixed vertical rod. A flow guide cavity is provided inside the connecting support frame. A through slot is opened on one side of the neutralization tank. A feed inlet is fixedly connected to the top of one side of the neutralization tank. A drive shaft is rotatably installed in the middle of the neutralization tank.

[0007] Furthermore, a first stirring rod is fixedly connected to the outer side of the drive shaft, and a first bevel gear is fixedly connected to the top of the drive shaft.

[0008] Furthermore, a retaining cylinder is rotatably mounted on the outer side of the drive shaft, a second bevel gear is fixedly connected to the top outer side of the retaining cylinder, connecting frames are fixedly connected to both sides of the retaining cylinder, and a second stirring rod that is offset from the first stirring rod is fixedly connected to the inner side of the connecting frame.

[0009] Furthermore, a reduction gear frame is fixedly connected to the top of the neutralization tank, a drive motor is fixedly installed on one side of the reduction gear frame, and a third bevel gear is fixedly connected to the drive end of the drive motor. The third bevel gear meshes with the first bevel gear and the second bevel gear.

[0010] Furthermore, the purification component includes a drain pipe and a connecting side frame. The drain pipe is fixedly connected to one side of the bottom of the neutralization tank. A connecting frame is fixedly connected to the middle of the drain pipe. A positioning clip is fixedly connected inside the connecting frame. Connecting side frames are fixedly connected to both sides of the connecting frame. A connecting slot is provided at the top of the connecting side frame. A fixing crossbar is fixedly connected in the connecting slot. A spring is provided on the outside of the fixing crossbar.

[0011] Furthermore, the connecting frame has a movable groove, in which a movable slide frame is movably installed. The movable slide frame has a movable groove inside, in which a limiting plate is provided. A fixed crossbar passes through the movable slide frame and is fixedly connected to the limiting plate. A locking wedge is fixedly connected to the top of the movable slide frame. An activated carbon plate is provided between the positioning strips. A fixed top plate is fixedly connected to the top of the activated carbon plate. A docking arm is fixedly connected to both sides of the fixed top plate. A locking wedge groove is provided on the docking arm, and the locking wedge groove engages with the locking wedge.

[0012] Furthermore, the monitoring component includes a water collection tank and a float plate. The water collection tank is fixedly connected to the other end of the drain pipe. A fixed base is fixedly connected to the bottom of the water collection tank. A fixed support plate is fixedly connected to one side of the fixed base. A connecting vertical rod is fixedly connected to the top of the fixed support plate. A limiting top plate is fixedly connected to the top of the connecting vertical rod. A float plate is provided inside the water collection tank. Fixed arc blocks are fixedly connected to both sides of the float plate. A connecting slide rod is fixedly connected to the top of the fixed arc blocks. The connecting slide rod passes through a perforation on the water collection tank and is fixedly connected to the connecting support rod on the outside.

[0013] Furthermore, a first movable plate is provided between the fixed base and the limiting top plate. The front end of the first movable plate is fixedly connected to the connecting support rod, and the bottom of the first movable plate is fixedly connected to the bottom second movable plate through a fixed vertical plate. Limiting sliding holes are provided on the first and second movable plates. The first and second movable plates are slidably installed on the outside of the connecting vertical rod through the limiting sliding holes. Contact blocks are provided on the top of the first movable plate and the bottom of the second movable plate. Switches are provided on the top of the fixed base and the bottom of the limiting top plate. A water outlet pipe is fixedly connected to one side of the water tank, and a control valve is installed on the water outlet pipe.

[0014] A method for using a wet desulfurization flue gas condensate cascade purification, collection, and reuse system includes the following steps: S1: The desulfurized flue gas enters the U-shaped collection pipe through the inlet pipe. The flue gas flows in the U-shaped collection pipe. The external cooling box cools the collection pipe through the cooling medium in the inner cavity. As the flue gas temperature decreases, the water vapor in it condenses into liquid water, forming desulfurization condensate. The condensate uses gravity in the U-shaped structure to collect water droplets at the bottom of the collection pipe. The flue gas after condensation is discharged through the exhaust pipe. S2: The condensate collected at the bottom of the collection pipe flows downward through the discharge pipe. The condensate first flows through the interception cylinder and is filtered through the filter holes at the bottom of the interception cylinder, so that large particles such as slurry droplets and dust are intercepted in the cylinder. If it is necessary to clean the impurities, simply unscrew the sealing cap that is connected to the discharge pipe through the threaded groove and threaded convex ring, and the interception cylinder can be pulled out for quick maintenance. S3: The condensate after preliminary filtration flows into the neutralization tank through the discharge pipe. Then, the neutralizing agent is quantitatively added from the feed port at the top of the neutralization tank and mixed with the condensate. Next, the drive motor is started to drive the third bevel gear to rotate. The third bevel gear simultaneously meshes with and drives the first bevel gear and the second bevel gear to rotate in opposite directions. The first bevel gear drives the drive shaft and the first stirring rod on the outside to rotate. The second bevel gear drives the rotating shaft and the connected second stirring rod to rotate, so that the two sets of stirring rods form bidirectional stirring, ensuring that the condensate and the neutralizing agent are fully mixed in a short time to remove acidic substances from the water. S4: After the neutralization reaction is completed, the water flows out from the drain pipe on one side of the bottom of the neutralization tank. When the water flows through the connecting frame in the middle of the drain pipe, it passes through the activated carbon plate inside. The activated carbon plate adsorbs the trace organic matter, heavy metal ions and odors remaining in the water, further improving the water quality. The purified water enters the collection tank for storage. S5: As the water level rises, the float slides upward under the action of buoyancy. The float is connected to the first movable plate through the connecting slide rod, which moves synchronously. When the water level in the collection tank is too high, the float drives the first movable plate to rise to the contact position, causing the contact block to trigger the switch above. The system automatically opens the control valve on the outlet pipe to discharge the water in the collection tank. As the water level drops, the float drops synchronously, causing it to drive the second movable plate and the contact block to touch the switch on the fixed base. The switch sends a signal to close the control valve, realizing the reuse of condensate.

[0015] The wet desulfurization flue gas condensate cascade purification, collection, and reuse system and process provided by this invention have the following beneficial effects. 1. This invention sets up a collection and filtration assembly, and uses a U-shaped collection pipe in conjunction with a cooling box to achieve flue gas cooling and condensation, and uses gravity to efficiently collect desulfurization condensate; the filter holes of the interception cylinder can effectively intercept large particulate impurities such as slurry droplets and dust; the sealing cover and the connecting inclined cylinder are connected by a threaded engagement, which facilitates quick disassembly and extraction of the interception cylinder to clean impurities, making operation convenient and improving maintenance efficiency.

[0016] 2. This invention, by setting up a neutralization component, uses a drive motor to drive the third bevel gear to drive the first and second bevel gears to rotate in opposite directions, causing the first and second stirring rods to be misaligned and stirred bidirectionally, which greatly improves the neutralization reaction speed and mixing uniformity, ensures that the acidity and alkalinity of the condensate quickly reach the standard, and improves the neutralization treatment effect and stability.

[0017] 3. This invention further purifies water quality by setting up a purification component and utilizing activated carbon plates to deeply adsorb residual organic matter, heavy metal ions, and odors in the water. In addition, it adopts an elastic locking structure of locking wedges, locking wedge grooves, and springs to achieve quick disassembly and replacement of activated carbon plates without tools, making operation simple and ensuring continuous and stable purification effect.

[0018] 4. By setting up a monitoring component, the present invention utilizes the buoyancy of the float plate as it rises and falls with the water level to drive the first and second movable plates to move synchronously, thereby triggering a switch action and automatically controlling the opening and closing of the control valve. This achieves intelligent regulation of the purified water level, ensuring the safe storage and stable reuse of purified water, effectively preventing overflow, and improving the reliability and automation of the system operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram: Figure 1 A schematic diagram of the overall structure according to the present invention is shown; Figure 2 A schematic diagram of the collection and filtering assembly structure according to the present invention is shown; Figure 3 A schematic diagram of the partial component breakdown structure in the collection and filtering assembly according to the present invention is shown; Figure 4 A schematic diagram of the neutralizing component structure according to the present invention is shown; Figure 5 A schematic diagram of the structure of some components in the neutralization assembly according to the present invention is shown; Figure 6 A schematic diagram of the purification component structure according to the present invention is shown; Figure 7 A schematic diagram of the structure of the first part of the purification assembly according to the present invention is shown; Figure 8 A schematic diagram of the structure of the second part of the purification assembly according to the present invention is shown; Figure 9 A schematic diagram of the monitoring component structure according to the present invention is shown; Figure 10 A schematic diagram of the system steps according to the present invention is shown; List of reference numerals 1. Cooling box; 101. Internal cavity; 2. Collect filter components; 201. Collection pipe; 2011. Intake pipe; 2012. Exhaust pipe; 202. Discharge pipe; 2021. Connecting inclined cylinder; 2022. Guide groove; 2023. Connecting convex ring; 2024. Threaded ring groove; 203. Interception tube; 2031. Positioning protrusion; 2032. Leakage hole; 2033. Filter hole; 204. Sealing cap; 2041. Threaded protruding ring; 3. Neutralizing components; 301. Neutralization tank; 3011. Connecting support frame; 3012. Fixing vertical rod; 3013. Flow guide cavity; 3014. Through groove; 3015. Feed inlet; 302, drive shaft; 3021, first stirring rod; 3022, first bevel gear; 303, Rotary shaft cylinder; 3031, Second bevel gear; 3032, Connecting frame; 3033, Second stirring rod; 304, reduction gear; 3041, drive motor; 3042, third bevel gear; 4. Purification components; 401. Drain pipe; 4011. Connecting frame; 4012. Positioning clip; 402. Connecting side frame; 4021. Connecting slot; 4022. Fixing crossbar; 4023. Spring; 403. Moving slot; 4031. Moving slide frame; 4032. Movable slot; 4033. Limiting plate; 4034. Locking wedge; 404, activated carbon plate; 4041, fixed top plate; 4042, connecting arm; 4043, locking wedge groove; 5. Monitoring components; 501. Water collection tank; 5011. Fixed base; 5012. Fixed support plate; 5013. Connecting vertical rod; 5014. Limiting top plate; 502, float plate; 5021, fixed arc block; 5022, connecting slide bar; 5023, perforation; 5024, connecting support rod; 503, First movable plate; 5031, Fixed vertical plate; 5032, Second movable plate; 5033, Limiting sliding hole; 5034, Contact block; 504, switch; 5041, water outlet pipe; 5042, control valve. Detailed Implementation

[0022] Example 1: Please refer to Figures 1 to 10 : This invention proposes a wet desulfurization flue gas condensate cascade purification, collection, and reuse system and process, comprising: a cooling box 1, a collection and filtration assembly 2, a neutralization assembly 3, a purification assembly 4, and a monitoring assembly 5; The cooling box 1 has an inner cavity 101, and a collection and filtration assembly 2 is provided in the inner cavity 101. The collection and filtration assembly 2 includes the following components: The collection pipe 201 is fixedly installed in the inner cavity 101. The collection pipe 201 has a U-shaped structure. One end of the collection pipe 201 is fixedly connected to the air inlet pipe 2011, and the other end of the collection pipe 201 is fixedly connected to the exhaust pipe 2012. The discharge pipe 202 is fixedly connected to the bottom of the collection pipe 201. A connecting inclined cylinder 2021 is fixedly connected to the middle of the discharge pipe 202. A guide groove 2022 is provided on the inner side wall of the connecting inclined cylinder 2021. A connecting protruding ring 2023 is fixedly connected to the outer side of the connecting inclined cylinder 2021. A threaded ring groove 2024 is provided on the connecting protruding ring 2023. An intercepting cylinder 203 is located inside the connecting inclined cylinder 2021. Positioning protrusions 2031 are fixedly connected to both sides of the intercepting cylinder 203. A leakage hole 2032 is opened at the top of the intercepting cylinder 203, and a filter hole 2033 is opened at the bottom of the intercepting cylinder 203. A sealing cover 204 is provided at one end of the connecting inclined cylinder 2021. A threaded protrusion ring 2041 is provided on the sealing cover 204, and the threaded protrusion ring 2041 engages with the threaded ring groove 2024. A neutralization component 3 is provided on one side of the bottom of the discharge pipe 202, a monitoring component 5 is provided on one side of the neutralization component 3, and a purification component 4 is provided between the neutralization component 3 and the monitoring component 5.

[0023] After desulfurization, the flue gas enters the collection pipe 201 through the inlet pipe 2011. The flue gas flows in the U-shaped collection pipe 201. The external cooling box 1 cools the collection pipe 201 through the cooling medium in the inner cavity 101, which lowers the temperature of the flue gas. Subsequently, water vapor condenses into liquid water, forming desulfurization condensate. The condensate is collected at the bottom of the collection pipe 201 by gravity in the U-shaped structure. The discharged condensate flows downward through the discharge pipe 202. The condensate first flows through the interception cylinder 203 and is filtered by the filter holes 2033 at the bottom of the interception cylinder 203, which intercepts large particles of impurities such as slurry droplets and dust inside the cylinder. If it is necessary to clean the impurities, simply unscrew the sealing cap 204 connected to the discharge pipe 202 through the threaded annular groove 2024 and the threaded convex ring 2041, and the interception cylinder 203 can be pulled out for quick maintenance.

[0024] Example 2: Based on Example 1, wherein... Figure 4 and Figure 5 As shown, the neutralization assembly 3 includes a neutralization tank 301 and a drive shaft 302. The neutralization tank 301 is located on one side of the bottom of the discharge pipe 202. A connecting support frame 3011 is fixedly connected to one side of the neutralization tank 301. The connecting support frame 3011 is fixedly connected to the cooling box 1 through a fixed vertical rod 3012. A guide cavity 3013 is provided inside the connecting support frame 3011. A through groove 3014 is opened on one side of the neutralization tank 301. An inlet 3015 is fixedly connected to the top of one side of the neutralization tank 301. The drive shaft 302 is rotatably installed in the middle of the neutralization tank 301.

[0025] A first stirring rod 3021 is fixedly connected to the outer side of the drive shaft 302, and a first bevel gear 3022 is fixedly connected to the top of the drive shaft 302.

[0026] A locking shaft cylinder 303 is rotatably mounted on the outer side of the drive shaft 302. A second bevel gear 3031 is fixedly connected to the top outer side of the locking shaft cylinder 303. A connecting frame 3032 is fixedly connected to both sides of the locking shaft cylinder 303. A second stirring rod 3033, which is offset from the first stirring rod 3021, is fixedly connected to the inner side of the connecting frame 3032.

[0027] A deceleration frame 304 is fixedly connected to the top of the neutralization tank 301. A drive motor 3041 is fixedly installed on one side of the deceleration frame 304. A third bevel gear 3042 is fixedly connected to the drive end of the drive motor 3041. The third bevel gear 3042 meshes with the first bevel gear 3022 and the second bevel gear 3031.

[0028] By starting the drive motor 3041, the third bevel gear 3042 is driven to rotate. The third bevel gear 3042 meshes with the first bevel gear 3022 and the second bevel gear 3031, causing the first bevel gear 3022 and the second bevel gear 3031 to rotate in opposite directions. Then, the first bevel gear 3022 drives the drive shaft 302 and the first stirring rod 3021 to rotate, while the second bevel gear 3031 drives the rotating shaft cylinder 303 and the second stirring rod 3033 on the connecting frame 3032 to rotate in opposite directions, so that bidirectional stirring is formed, which accelerates the neutralization speed.

[0029] Example 3: Based on Examples 1 and 2, wherein, as follows Figures 6 to 8 As shown, the purification component 4 includes a drain pipe 401 and a connecting side frame 402. The drain pipe 401 is fixedly connected to the bottom side of the neutralization tank 301. A connecting frame 4011 is fixedly connected to the middle of the drain pipe 401. A positioning clip 4012 is fixedly connected inside the connecting frame 4011. Connecting side frames 402 are fixedly connected to both sides of the connecting frame 4011. A connecting slot 4021 is provided at the top of the connecting side frame 402. A fixing crossbar 4022 is fixedly connected in the connecting slot 4021. A spring 4023 is provided on the outside of the fixing crossbar 4022.

[0030] A movable groove 403 is provided on the connecting frame 4011. A movable slide frame 4031 is movably installed in the movable groove 403. A movable groove 4032 is provided inside the movable slide frame 4031. A limiting plate 4033 is provided in the movable groove 4032. A fixed crossbar 4022 passes through the movable slide frame 4031 and is fixedly connected to the limiting plate 4033. A locking wedge 4034 is fixedly connected to the top of the movable slide frame 4031. An activated carbon plate 404 is provided between the positioning clips 4012. A fixed top plate 4041 is fixedly connected to the top of the activated carbon plate 404. A docking arm 4042 is fixedly connected to both sides of the fixed top plate 4041. A locking wedge groove 4043 is provided on the docking arm 4042. The locking wedge groove 4043 engages with the locking wedge 4034.

[0031] After the neutralization reaction is complete, the water flows out from the drain pipe 401 on one side of the bottom of the neutralization tank 301. When the water flows through the connecting frame 4011 in the middle of the drain pipe 401, it passes through the activated carbon plate 404 inside. The activated carbon plate 404 adsorbs residual trace organic matter, heavy metal ions and odors in the water, further improving the water quality. If the activated carbon plate 404 needs maintenance, simply press the sliding frame 4031 to disengage the locking wedge 4034 from the locking wedge groove 4043, and the activated carbon plate 404 can be removed and replaced. During installation, insert the activated carbon plate 404 into the positioning clip 4012 and fix the top. The mating arms 4042 on both sides of the plate 4041 are inserted into the connecting slots 4021. During the movement, the mating arms 4042 press the locking wedge 4034 to move. The locking wedge 4034 then drives the moving slide frame 4031 to move inward, so that it presses the spring 4023. When the activated carbon plate 404 is fully inserted, the mating arms 4042 can no longer press the locking wedge 4034, so the spring 4023 loses pressure and generates a reaction force to push the moving slide frame 4031 to move outward. The moving slide frame 4031 drives the locking wedge 4034 to be engaged in the locking wedge groove 4043.

[0032] Example 4: Based on Examples 1, 2, and 3, wherein, as follows... Figure 9 As shown, the monitoring component 5 includes a water collection tank 501 and a float plate 502. The water collection tank 501 is fixedly connected to the other end of the drain pipe 401. A fixed base 5011 is fixedly connected to the bottom of the water collection tank 501. A fixed support plate 5012 is fixedly connected to one side of the fixed base 5011. A connecting vertical rod 5013 is fixedly connected to the top of the fixed support plate 5012. A limiting top plate 5014 is fixedly connected to the top of the connecting vertical rod 5013. The float plate 502 is provided inside the water collection tank 501. Fixed arc blocks 5021 are fixedly connected to both sides of the float plate 502. A connecting slide rod 5022 is fixedly connected to the top of the fixed arc blocks 5021. The connecting slide rod 5022 passes through the perforation 5023 on the water collection tank 501 and is fixedly connected to the connecting support rod 5024 on the outside.

[0033] A first movable plate 503 is provided between the fixed base 5011 and the limiting top plate 5014. The front end of the first movable plate 503 is fixedly connected to the connecting support rod 5024. The bottom of the first movable plate 503 is fixedly connected to the bottom second movable plate 5032 through the fixed vertical plate 5031. Limiting sliding holes 5033 are provided on the first movable plate 503 and the second movable plate 5032. The first movable plate 503 and the second movable plate 5032 are slidably installed on the outside of the connecting vertical rod 5013 through the limiting sliding holes 5033. Contact blocks 5034 are provided on the top of the first movable plate 503 and the bottom of the second movable plate 5032. A switch 504 is provided on the top of the fixed base 5011 and the bottom of the limiting top plate 5014. A water outlet pipe 5041 is fixedly connected to one side of the water collection tank 501. A control valve 5042 is installed on the water outlet pipe 5041.

[0034] The purified water enters the collection tank 501 for storage. As the water level rises, the float 502 slides upward under the action of buoyancy. The float 502 is connected to the first movable plate 503 through the connecting slide rod 5022, so that it drives the first movable plate 503 and the second movable plate 5032 to move synchronously. When the water level in the collection tank 501 is too high, the float 502 drives the first movable plate 503 to rise to the contact position, so that the contact block 5034 triggers the switch 504 above. The system automatically opens the control valve 5042 on the water outlet pipe 5041 to discharge the water in the collection tank 501. As the water level drops, the float 502 drops synchronously, so that it drives the second movable plate 5032 and the contact block 5034 to touch the switch 504 on the fixed base 5011. The switch 504 sends a signal to close the control valve 5042.

[0035] The specific usage and function of this embodiment: In this invention, the desulfurized flue gas enters the collection pipe 201 through the inlet pipe 2011. The flue gas flows in the U-shaped collection pipe 201. The external cooling box 1 cools the collection pipe 201 through the cooling medium in the inner cavity 101, thereby lowering the temperature of the flue gas. Subsequently, water vapor condenses into liquid water, forming desulfurization condensate. The condensate flows in the U-shaped collection pipe 201. The structure utilizes gravity to collect water droplets at the bottom of the collection pipe 201. The discharged condensate flows downwards through the discharge pipe 202. The condensate first flows through the interception cylinder 203, where it is filtered through the filter holes 2033 at the bottom, trapping large particles such as slurry droplets and dust. The filtered condensate then enters the neutralization tank 301. A neutralizing agent is quantitatively added through the inlet 3015 at the top of the neutralization tank 301, mixing with the condensate. Then, the drive motor 3041 is activated, driving the third bevel gear 3042 to rotate. The third bevel gear 3042 meshes with the first bevel gear 3022 and the second bevel gear 3031, causing the first bevel gear 3022 and the second bevel gear 3031 to engage and transmit power. The two bevel gears 3031 rotate in opposite directions, and then the first bevel gear 3022 drives the drive shaft 302 and the first stirring rod 3021 to rotate. Meanwhile, the second bevel gear 3031 drives the rotating shaft cylinder 303 and the second stirring rod 3033 on the connecting frame 3032 to rotate in opposite directions, forming bidirectional stirring and accelerating the neutralization speed. After the neutralization reaction is completed, the water flows out from the drain pipe 401 on one side of the bottom of the neutralization tank 301. When the water flows through the connecting frame 4011 in the middle of the drain pipe 401, it passes through the activated carbon plate 404 inside. The activated carbon plate 404 adsorbs the trace organic matter, heavy metal ions and odors remaining in the water, further improving the water quality. Finally, the purified water enters the water collection tank 501 for storage.

Claims

1. A wet desulfurization flue gas condensate cascade purification, collection, and reuse system, characterized in that, include: Cooling box (1), collection and filtration assembly (2), neutralization assembly (3), purification assembly (4) and monitoring assembly (5); The cooling box (1) has an inner cavity (101) inside, and a collection and filtration assembly (2) is provided in the inner cavity (101). The collection and filtration assembly (2) includes the following components: The collecting pipe (201) is fixedly installed in the inner cavity (101). The collecting pipe (201) has a U-shaped structure. One end of the collecting pipe (201) is fixedly connected to the air inlet pipe (2011), and the other end of the collecting pipe (201) is fixedly connected to the exhaust pipe (2012). The discharge pipe (202) is fixedly connected to the bottom of the collection pipe (201). A connecting inclined cylinder (2021) is fixedly connected to the middle of the discharge pipe (202). A guide groove (2022) is provided on the inner side wall of the connecting inclined cylinder (2021). A connecting protruding ring (2023) is fixedly connected to the outer side of the connecting inclined cylinder (2021). A threaded ring groove (2024) is provided on the connecting protruding ring (2023). An interceptor tube (203) is located inside the connecting inclined tube (2021). Positioning protrusions (2031) are fixedly connected to both sides of the interceptor tube (203). A leakage hole (2032) is opened at the top of the interceptor tube (203), and a filter hole (2033) is opened at the bottom of the interceptor tube (203). A sealing cap (204) is provided at one end of the connecting inclined cylinder (2021). The sealing cap (204) is provided with a threaded protrusion ring (2041), which engages with the threaded ring groove (2024). A neutralization component (3) is provided on one side of the bottom of the discharge pipe (202), a monitoring component (5) is provided on one side of the neutralization component (3), and a purification component (4) is provided between the neutralization component (3) and the monitoring component (5).

2. The wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 1, characterized in that: The neutralization assembly (3) includes a neutralization tank (301) and a drive shaft (302). The neutralization tank (301) is located on one side of the bottom of the discharge pipe (202). A connecting support frame (3011) is fixedly connected to one side of the neutralization tank (301). The connecting support frame (3011) is fixedly connected to the cooling box (1) through a fixed vertical rod (3012). A flow guide cavity (3013) is provided inside the connecting support frame (3011). A through groove (3014) is opened on one side of the neutralization tank (301). An inlet (3015) is fixedly connected to the top of one side of the neutralization tank (301). The drive shaft (302) is rotatably installed in the middle of the neutralization tank (301).

3. The wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 2, characterized in that: The first stirring rod (3021) is fixedly connected to the outside of the drive shaft (302), and the first bevel gear (3022) is fixedly connected to the top of the drive shaft (302).

4. The wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 2, characterized in that: A locking cylinder (303) is rotatably mounted on the outer side of the drive shaft (302). A second bevel gear (3031) is fixedly connected to the top outer side of the locking cylinder (303). A connecting frame (3032) is fixedly connected to both sides of the locking cylinder (303). A second stirring rod (3033) that is offset from the first stirring rod (3021) is fixedly connected to the inner side of the connecting frame (3032).

5. A wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 2, characterized in that: The top of the neutralization tank (301) is fixedly connected to a deceleration frame (304), and a drive motor (3041) is fixedly installed on one side of the deceleration frame (304). The drive end of the drive motor (3041) is fixedly connected to a third bevel gear (3042), which meshes with the first bevel gear (3022) and the second bevel gear (3031).

6. The wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 1, characterized in that: The purification component (4) includes a drain pipe (401) and a connecting side frame (402). The drain pipe (401) is fixedly connected to the bottom side of the neutralization tank (301). A connecting frame (4011) is fixedly connected to the middle of the drain pipe (401). A positioning clip (4012) is fixedly connected inside the connecting frame (4011). Connecting side frames (402) are fixedly connected to both sides of the connecting frame (4011). A connecting slot (4021) is provided at the top of the connecting side frame (402). A fixing crossbar (4022) is fixedly connected in the connecting slot (4021). A spring (4023) is provided on the outside of the fixing crossbar (4022).

7. A wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 6, characterized in that: The connecting frame (4011) is provided with a movable groove (403), and a movable slide frame (4031) is movably installed in the movable groove (403). The movable slide frame (4031) is provided with a movable groove (4032) inside, and a limiting plate (4033) is provided in the movable groove (4032). A fixed crossbar (4022) passes through the movable slide frame (4031) and is fixedly connected to the limiting plate (4033). A locking wedge (4034) is fixedly connected to the top of the movable slide frame (4031). An activated carbon plate (404) is provided between the positioning strips (4012). A fixed top plate (4041) is fixedly connected to the top of the activated carbon plate (404). A docking arm (4042) is fixedly connected to both sides of the fixed top plate (4041). A locking wedge groove (4043) is provided on the docking arm (4042). The locking wedge groove (4043) engages with the locking wedge (4034).

8. A wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 1, characterized in that: The monitoring component (5) includes a water collection tank (501) and a float plate (502). The water collection tank (501) is fixedly connected to the other end of the drain pipe (401). A fixed base (5011) is fixedly connected to the bottom of the water collection tank (501). A fixed support plate (5012) is fixedly connected to one side of the fixed base (5011). A connecting vertical rod (5013) is fixedly connected to the top of the fixed support plate (5012). A limiting top plate (5014) is fixedly connected to the top of the connecting vertical rod (5013). A float plate (502) is provided inside the water collection tank (501). Fixed arc blocks (5021) are fixedly connected to both sides of the float plate (502). A connecting slide rod (5022) is fixedly connected to the top of the fixed arc blocks (5021). The connecting slide rod (5022) passes through the perforation (5023) on the water collection tank (501) and is fixedly connected to the connecting support rod (5024) on the outside.

9. A wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claim 8, characterized in that: A first movable plate (503) is provided between the fixed base (5011) and the limiting top plate (5014). The front end of the first movable plate (503) is fixedly connected to the connecting support rod (5024). The bottom of the first movable plate (503) is fixedly connected to the bottom second movable plate (5032) through a fixed vertical plate (5031). Limiting sliding holes (5033) are provided on the first movable plate (503) and the second movable plate (5032). (5032) is slidably installed on the outside of the connecting vertical rod (5013) through the limiting sliding hole (5033). The top of the first movable plate (503) and the bottom of the second movable plate (5032) are provided with contact blocks (5034); the top of the fixed base (5011) and the bottom of the limiting top plate (5014) are provided with switches (504); the side of the water collection tank (501) is fixedly connected to a water outlet pipe (5041), and a control valve (5042) is installed on the water outlet pipe (5041).

10. The method of using a wet desulfurization flue gas condensate cascade purification, collection, and reuse system according to claims 1-9, characterized in that: Includes the following steps: S1: The desulfurized flue gas enters the U-shaped collection pipe (201) through the inlet pipe (2011). The flue gas flows in the U-shaped collection pipe (201). The external cooling box (1) cools the collection pipe (201) through the cooling medium in the inner cavity (101). The flue gas temperature decreases, and the water vapor in it condenses into liquid water to form desulfurization condensate. The condensate uses gravity in the U-shaped structure to make the water droplets collect at the bottom of the collection pipe (201). The flue gas after condensation is discharged through the exhaust pipe (2012). S2: The condensate collected at the bottom of the collection pipe (201) flows downward through the discharge pipe (202). The condensate first flows through the interception cylinder (203) and is filtered by the filter holes (2033) at the bottom of the interception cylinder (203), so that large particles such as slurry droplets and dust are intercepted in the cylinder. If it is necessary to clean the impurities, simply unscrew the sealing cap (204) connected to the discharge pipe (202) through the threaded ring groove (2024) and the threaded convex ring (2041) to pull out the interception cylinder (203) for quick maintenance. S3: The condensate after preliminary filtration flows into the neutralization tank (301) through the discharge pipe (202). Then, the neutralizing agent is quantitatively added from the feed port (3015) at the top of the neutralization tank (301) and mixed with the condensate. Then, the drive motor (3041) is started to drive the third bevel gear (3042) to rotate. The third bevel gear (3042) simultaneously meshes and drives the first bevel gear (3022) and the second bevel gear (3031) to rotate in opposite directions. The first bevel gear (3022) drives the drive shaft (302) and the first stirring rod (3021) on the outside to rotate. The second bevel gear (3031) drives the rotating shaft cylinder (303) and the connected second stirring rod (3033) to rotate, so that the two sets of stirring rods form bidirectional stirring, ensuring that the condensate and the neutralizing agent are fully mixed in a short time to remove acidic substances in the water. S4: After the neutralization reaction is completed, the water flows out from the drain pipe (401) on one side of the bottom of the neutralization tank (301). When the water flows through the connecting frame (4011) in the middle of the drain pipe (401), it passes through the activated carbon plate (404) inside. The activated carbon plate (404) adsorbs the trace organic matter, heavy metal ions and odors remaining in the water, further improving the water quality. The purified water enters the water collection tank (501) for storage. S5: As the water level rises, the float (502) slides upward under the action of buoyancy. The float (502) is connected to the first movable plate (503) through the connecting slide rod (5022), and moves synchronously. When the water level in the collection tank (501) is too high, the float (502) drives the first movable plate (503) to rise to the contact position, so that the contact block (5034) triggers the switch (504) above. The system automatically opens the control valve (5042) on the outlet pipe (5041) to discharge the water in the collection tank (501). As the water level drops, the float (502) drops synchronously, so that it drives the second movable plate (5032) and the contact block (5034) to touch the switch (504) on the fixed base (5011). The switch (504) sends a signal to close the control valve (5042) to realize the reuse of condensate.

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