Condensation and collection system for moisture in wet flue gas after desulfurization of power plant

Abstract

The invention relates to the technical field of flue gas separation, in particular to a condensation and collection system for moisture in wet flue gas after desulfurization of a power plant, which comprises a chimney, a flow guide recovery assembly, a double-flow-channel spiral flow guide assembly and a self-cleaning impurity filtering assembly. The diversion recovery assembly is arranged in the chimney and comprises a condensation recovery tank, a baffle plate and a plurality of auxiliary condensation plates, the condensation recovery tank is fixedly connected with the inner wall of the chimney and is matched with the inner wall of the chimney to form a condensate collection flow channel, and the baffle plate is fixedly arranged above the condensation recovery tank. The double-flow-channel spiral flow guide assembly is arranged in the chimney, the double-flow-channel spiral flow guide assembly comprises a double-flow-channel flow guide cylinder, a pair of smoke exhaust pipes and a centrifugal turbulent flow part, and the pair of smoke exhaust pipes are arranged above the double-flow-channel flow guide cylinder in a circumferential mirror image mode and used for guiding out smoke in the lower smoke inlet flow channel in a double-flow-channel spiral mode. The device has the effect of improving separation, condensation and recovery of moisture in the flue gas after wet desulphurization.

Description

Technical Field

[0001] This application relates to the field of flue gas separation technology, and in particular to a moisture condensation and collection system for wet flue gas after desulfurization in power plants. Background Technology

[0002] Wet desulfurization is currently the main method used in thermal power plants to purify flue gas. Although the sulfur dioxide content in the flue gas is greatly reduced after wet desulfurization, the humidity and temperature of the flue gas increase after treatment. This makes it very easy for the flue gas to condense into droplets on the inner wall of the chimney during the discharge process. These droplets can then combine with residual sulfur dioxide, nitrogen oxides, or other media in the flue gas to form highly corrosive condensate, which will corrode the inner wall of the chimney. Furthermore, when the flue gas is directly discharged into the environment, it will come into contact with the low-temperature air and form droplets. The dripping of these droplets will cause secondary pollution to the surrounding environment and buildings.

[0003] Existing technologies mainly recover moisture from flue gas after wet desulfurization by installing condensers inside the chimney or by simply installing guide channels on the inner wall of the chimney. However, while installing condensers can effectively recover moisture from the flue gas, they are also susceptible to corrosion and damage from corrosive substances in the flue gas. Regular maintenance and replacement of the condensers are necessary, resulting in high operating costs and unstable recovery efficiency. On the other hand, simply installing guide channels is less effective at recovering moisture from the flue gas, especially for moisture located in the center of the chimney.

[0004] Therefore, neither installing a condenser inside the chimney nor simply setting up a guide channel can efficiently separate the moisture in the flue gas after wet desulfurization, resulting in poor condensation and recovery of moisture from the flue gas. Summary of the Invention

[0005] To address the issue of poor condensation and recovery of moisture in flue gas after wet desulfurization, this application provides a moisture condensation and collection system for wet flue gas after power plant desulfurization.

[0006] This application provides a moisture condensation and collection system for wet flue gas after desulfurization in power plants, which adopts the following technical solution: A moisture condensation and collection system for wet flue gas after desulfurization in a power plant includes: a chimney, a flow guiding and recovery component, a dual-channel spiral flow guiding component, and a self-cleaning filter component.

[0007] The flow guiding and recovery assembly is installed inside the chimney. The flow guiding and recovery assembly includes a condensate recovery tank, a baffle plate, and multiple auxiliary condensate plates. The condensate recovery tank is fixedly connected to the inner wall of the chimney and cooperates with the inner wall of the chimney to form a condensate collection channel. The baffle plate is fixedly installed above the condensate recovery tank and is inclined towards the inner wall of the chimney. The multiple auxiliary condensate plates are fixedly connected to the side of the baffle plate close to the condensate recovery tank.

[0008] The dual-channel spiral guide assembly is installed inside the chimney. The dual-channel spiral guide assembly includes a dual-channel guide cylinder, a pair of exhaust pipes, and a centrifugal turbulence component. The dual-channel guide cylinder is fixedly connected to the inner wall of the chimney. The pair of exhaust pipes are circumferentially mirrored above the dual-channel guide cylinder to guide the flue gas out in a dual-channel spiral. The centrifugal turbulence component is used to centrifuge and turbulently treat the flue gas in the upper centrifugal condensation channel.

[0009] The self-cleaning filter assembly is installed inside the chimney. The self-cleaning filter assembly includes a pair of filter guides and a vibrating dust removal component. The pair of filter guides are correspondingly arranged with a pair of exhaust pipes and are used to filter dust and adsorb corrosive substances in the flue gas transported in the dual-channel guide tube. The vibrating dust removal component is used to vibrate and remove dust from the filter guides.

[0010] The flow guiding and recovery component is disposed in the upper centrifugal condensation channel. The flow guiding and recovery component includes a condensation recovery tank, which is fixedly connected to the inner wall of the chimney and cooperates with the chimney to form a condensate collection channel for collecting and guiding the condensate condensed on the inner wall of the chimney.

[0011] By adopting the above technical solution, in practical application, the flue gas after desulfurization of the power plant is discharged through the chimney. During the discharge process, the flue gas first enters the lower flue gas inlet channel, and after being guided by the double-channel guide tube, it is discharged along a pair of exhaust pipes. The flue gas is inclined to be transported along the inner wall of the chimney through the pair of exhaust pipes, so that the flue gas is spirally discharged along the upper centrifugal condensation channel under the guidance of the double-channel guide tube and the exhaust pipes. This ensures the effective contact and condensation of the flue gas with the inner wall of the upper centrifugal condensation channel. At the same time, the liquid droplets contained in the flue gas can be thrown to the inner wall of the upper centrifugal condensation channel under the action of centrifugal force. The condensate water condensed on the inner wall of the upper centrifugal condensation channel can be collected and discharged under the guidance of the condensation recovery tank, thereby achieving the purpose of condensing and recovering moisture in the flue gas. In addition, during the process of guiding and transporting flue gas through the dual-channel guide tube, impurities and corrosive substances in the flue gas can be further adsorbed and treated by the self-cleaning filter components, which greatly reduces the corrosivity of the subsequent condensate and improves the effect of the condensate recovery tank in collecting condensate.

[0012] Optionally, at least one flue gas inlet is provided at the bottom of the chimney, and a flue gas outlet is provided at the top of the chimney. The flue gas inlet and the flue gas outlet are respectively connected to the lower flue gas inlet channel and the upper centrifugal condenser channel.

[0013] By adopting the above technical solution, during use, the flue gas to be discharged is conveyed into the chimney through the flue gas inlet, and the treated flue gas in the chimney is discharged through the flue gas outlet.

[0014] Optionally, the condensation recovery tank has an L-shaped cross-section, and the condensation recovery tank as a whole is spiral or annular, with an anti-corrosion coating on the inner wall of the condensation recovery tank.

[0015] By adopting the above technical solution and setting an anti-corrosion coating on the inner wall of the condensation recovery tank, the anti-corrosion performance of the condensation recovery tank is greatly improved, and the actual service life of the condensation recovery tank is extended.

[0016] Optionally, the density of the condensation recovery tank gradually increases as the horizontal height increases, the length of the multiple auxiliary condensation plates gradually decreases from the inside to the outside, a collection pipe is connected to one side of the condensation recovery tank, and a drain pipe is fixedly connected to the lower end of the collection pipe.

[0017] By adopting the above technical solution, during use, condensate at different heights within the chimney is guided and recovered through condensate recovery tanks of varying densities, ensuring effective condensate recovery and guidance. Simultaneously, the condensate collected in the condensate recovery tanks can be discharged through a collection pipe and a drain pipe.

[0018] Optionally, the dual-channel guide tube includes a cylinder body, a smoke inlet, and a pair of diversion limiting plates. The cylinder body is hollow, the smoke inlet is located at the center of the cylinder body and has an opening at the lower end, and the pair of diversion limiting plates are circumferentially mirror-arranged inside the cylinder body. The two ends of the pair of diversion limiting plates are respectively fixedly connected to the inner wall of the cylinder body and the outer wall of the smoke inlet.

[0019] By adopting the above technical solution, when in use, the flue gas in the lower flue gas inlet channel is guided and transported through the flue gas inlet, and the flue gas in the cylinder is guided and limited by the diversion and limiting plate.

[0020] Optionally, the smoke inlet and a pair of diversion limiting plates divide the cylinder into two flow guiding cavities. The smoke inlet is provided with a pair of circumferentially distributed smoke inlet holes on the outer side of one end of the cylinder. The pair of smoke inlet holes are respectively connected to the two flow guiding cavities. The pair of smoke exhaust pipes are respectively connected to the two flow guiding cavities, and the pair of smoke exhaust pipes are located on the side of the flow guiding cavity away from the smoke inlet holes.

[0021] By adopting the above technical solution, during use, a pair of smoke inlets allow the flue gas in the smoke inlet stack to be transported from bottom to top into two guide chambers under pressure. The two guide chambers then guide and limit the flow of the flue gas. By placing the exhaust pipe on the side of the guide chamber away from the smoke inlets, the flue gas in the pair of guide chambers will exhibit a rotating flow state under the limiting effect of the guide chambers. This allows the flue gas discharged from the pair of exhaust pipes to be transported in a bolt-like manner within the upper centrifugal condensation channel.

[0022] Optionally, the dual-channel spiral guide assembly further includes a smoke inlet guide pipe and a guide plate. The smoke inlet guide pipe is fixedly installed below the smoke inlet chimney, and the guide plate is sleeved on the outside of the smoke inlet guide pipe and fixedly connected to the inner wall of the chimney.

[0023] By adopting the above technical solution, the flue gas in the lower flue gas inlet channel can only be transported to the flue gas inlet stack along the flue gas inlet guide pipe through the cooperation of the flue gas inlet guide pipe, thus avoiding the occurrence of flue gas flow disorder.

[0024] Optionally, the centrifugal turbulence component includes a rotating shaft, a pair of turbulence plates, and an exhaust impeller. The rotating shaft is rotatably disposed inside the flue. The pair of turbulence plates are symmetrically disposed at the top of the rotating shaft, and the pair of turbulence plates are correspondingly disposed with a pair of exhaust pipes. The exhaust impeller is fixedly disposed at the lower end of the rotating shaft.

[0025] By adopting the above technical solution, the rotating shaft assembles, fixes, and controls the pair of baffles and the exhaust impeller. When the pair of baffles rotate under the influence of the airflow from the pair of exhaust pipes, the rotating shaft and the exhaust impeller can be driven to rotate synchronously. The rotation of the exhaust impeller can accelerate the rate at which the flue gas in the lower flue gas inlet channel enters the flue gas inlet stack. Furthermore, the rotation of the pair of baffles can turbulentize the flue gas in the upper centrifugal condensation channel, causing the flue gas in the upper centrifugal condensation channel to flow in a spiral diffusion pattern. This improves the sufficient contact between the flue gas and the inner wall of the upper centrifugal condensation channel, ensuring the effect of condensing and recovering moisture from the flue gas.

[0026] Optionally, a pair of filter guides are fixedly installed in two guide cavities and are corresponding to the exhaust pipe. The side of the pair of filter guides close to the exhaust pipe is arranged in a mesh pattern, and a material discharge hole is opened at the bottom of the pair of filter guides.

[0027] By adopting the above technical solution, the flue gas discharged along the exhaust pipe is filtered and treated with a filter guide, which greatly reduces the content of impurities in the subsequent condensate. At the same time, it reduces the risk of blockage in the condensate recovery tank or scaling on the inner wall of the upper centrifugal condensate channel. By opening a discharge hole at the bottom of the filter guide, it is easy to collect and guide the falling impurities.

[0028] Optionally, a pair of discharge pipes are fixedly connected to the bottom of the dual-channel guide tube. The discharge pipes are connected to the material discharge hole at the bottom of the filter guide. Both discharge pipes penetrate the chimney. The end of the pair of discharge pipes close to the material discharge hole is filled with adsorbent filter material. The end of the pair of discharge pipes outside the chimney is slidably inserted with a sealing plate.

[0029] By adopting the above technical solution, the impurities filtered out of the filter guide are guided out through the impurity discharge pipe, which simplifies the process of cleaning the impurities in the filter guide. At the same time, the impurity discharge pipe can be conveniently assembled with the adsorption filter material. By setting a sealing plate, the impurity discharge pipe can be sealed, preventing the flue gas from being discharged outside the chimney along the impurity discharge pipe.

[0030] In summary, the embodiments of the present invention provide a moisture condensation and collection system for wet flue gas after desulfurization in power plants, which includes at least one of the following beneficial technical effects: 1. By deploying condensate recovery tanks with adaptive density, condensate in different areas can be collected and guided at different levels according to actual conditions, reducing the loss of condensate during the flow process and greatly improving the effect of condensate guidance and recovery. 2. By setting up a dual-channel spiral guide assembly, the flue gas can be discharged in a spiral diffusion manner, which greatly improves the contact between the flue gas and the inner wall of the condenser, and significantly improves the effect of condensing and recovering moisture in the flue gas. 3. By setting up a self-cleaning filter component, impurities and corrosive substances in the flue gas can be further removed, greatly reducing the corrosivity of the subsequent condensate and improving the effect of subsequent condensate diversion and recovery. Attached Figure Description

[0031] Figure 1 This is a partial structural diagram of a flow-guiding and recovery component in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the first embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a flow-guiding and recovery component in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the first embodiment of the present invention. Figure 3 for Figure 2 Enlarged view of a portion of the structure at point A; Figure 4 This is a schematic diagram of the structure of a condensation recovery tank in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the first embodiment of the present invention. Figure 5 This is a schematic diagram of a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention. Figure 6 for Figure 5 Enlarged view of the structure at point B in the middle; Figure 7 This is a schematic diagram of the structure of a dual-channel spiral guide component in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention. Figure 8 This is a partial structural diagram of a dual-channel spiral guide assembly in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention. Figure 9 This is a partial structural diagram of a self-cleaning filter component in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention. Figure 10 for Figure 9 Enlarged view of the structure at point C; Figure 11 This is a top sectional view of a dual-channel spiral guide assembly in a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention. Figure 12 for Figure 11 Enlarged view of the structure at point D; Figure 13 This is a three-dimensional structural diagram of a moisture condensation and collection system in wet flue gas after desulfurization in a power plant, provided in the second embodiment of the present invention.

[0032] Explanation of the markings in the image: 1. Chimney; 101. Smoke inlet; 102. Smoke outlet; 2. Flow guiding and recovery assembly; 201. Condensation recovery tank; 202. Baffle plate; 203. Auxiliary condensation plate; 204. Manifold; 205. Drain pipe; 3. Dual-channel spiral guide assembly; 301. Dual-channel guide cylinder; 3011. Cylinder body; 3012. Smoke inlet; 3013. Diversion and limiting plate; 302. Smoke exhaust pipe; 303. Smoke inlet guide pipe; 304. Guide plate; 305. Rotating shaft; 306. Baffle plate; 307. Exhaust impeller; 4. Self-cleaning filter assembly; 401. Filter guide; 402. Discharge pipe; 403. Sealing plate; 404. Vibrating rod; 405. Impact block; 406. Return spring; 407. Collision ball; 408. Drive impeller. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0034] First embodiment: Combination Figure 1 and Figure 4This application discloses a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, comprising: a chimney 1, a flow guiding and recovery component 2, a dual-channel spiral flow guiding component 3, and a self-cleaning filter component 4. In practical applications, the flue gas after desulfurization is discharged through the chimney 1. During the discharge process, the flue gas comes into contact with the inner wall of the chimney 1, and condensation occurs due to the temperature difference. The condensation can be collected and discharged under the guidance of the flow guiding and recovery component 2, thereby achieving the purpose of condensing and recovering moisture from the flue gas.

[0035] The chimney 1 has at least one flue gas inlet 101 at its lower part and a flue gas outlet 102 at its upper part. The flue gas inlet 101 and the flue gas outlet 102 are respectively connected to the lower flue gas inlet channel and the upper centrifugal condenser channel. The flue gas to be discharged is introduced into the chimney 1 through the flue gas inlet 101, and the treated flue gas in the chimney 1 is discharged through the flue gas outlet 102.

[0036] Specifically, the flue gas inlet 101 can be eccentrically located on one side of the chimney 1, so that after the flue gas is transported into the chimney 1 through the flue gas inlet 101, it will be transported in the tangential direction of the inner wall of the chimney 1, thereby causing the continuously transported flue gas to rise in a spiral shape within the chimney 1.

[0037] Combination Figure 1 and Figure 4 The flow diversion and recovery component 2 is installed inside the chimney 1 to collect and divert the condensate water condensed on the inner wall of the chimney 1.

[0038] Combination Figure 2 and Figure 3 The flow diversion and recovery assembly 2 includes a condensate recovery tank 201, a baffle plate 202, and multiple auxiliary condensate plates 203. The condensate recovery tank 201 is fixedly connected to the inner wall of the chimney 1 and cooperates with the inner wall of the chimney 1 to form a condensate collection channel. It is used to divert and discharge the condensate condensed on the inner wall of the chimney 1.

[0039] Combination Figure 2 and Figure 3 A baffle plate 202 is fixedly installed above the condensate recovery tank 201 and inclined towards the inner wall of the chimney 1. By inclinedly installing the baffle plate 202 above the condensate recovery tank 201, the condensate flowing in the condensate recovery tank 201 can be protected, greatly reducing the possibility of condensate evaporation and escape due to the influence of the lower layer of flue gas in the condensate recovery tank 201 during the flow process, thus ensuring the effectiveness of condensate collection and guidance. At the same time, the baffle plate 202 limits the escape of flue gas in the condensate recovery tank 201, ensuring the effectiveness of flue gas condensation and recovery.

[0040] Combination Figure 2 and Figure 3Multiple auxiliary condensing plates 203 are fixedly connected to the baffle plate 202 on one side of the condensation recovery tank 201. The multiple auxiliary condensing plates 203 assist in the condensation recovery tank 201 to recover flue gas.

[0041] Specifically, the condensation recovery tank 201 has an L-shaped cross-section and is spiral-shaped as a whole. The inner wall of the condensation recovery tank 201 is provided with an anti-corrosion coating. By providing an anti-corrosion coating on the inner wall of the condensation recovery tank 201, the anti-corrosion performance of the condensation recovery tank 201 is greatly improved, and the actual service life of the condensation recovery tank 201 is extended.

[0042] It is worth noting that the condensation recovery tank 201 is made of titanium plate, which has good corrosion resistance. The anti-corrosion coating is made of 2296 polymer composite material or 418 ceramic composite material, and the coating thickness is greater than or equal to 0.5 mm.

[0043] Combination Figure 4 The density of the condensation recovery tanks 201 gradually increases with the increase of horizontal height. As is well known, the temperature of the lower half of the chimney 1 is greater than that of the upper half. In other words, as the horizontal height increases, the temperature difference between the flue gas and the side wall of the chimney 1 is greater, which makes the flue gas condensation effect better. The condensation recovery tanks 201 located at higher positions are set up more densely, which improves the effect of the condensation recovery tanks 201 in collecting and guiding condensate.

[0044] Combination Figure 2 and Figure 3 The length of the multiple auxiliary condensing plates 203 gradually decreases from the inside to the outside. This facilitates the auxiliary condensation and recovery of flue gas in the condensation recovery tank 201 through the multiple auxiliary condensing plates 203.

[0045] Combination Figure 4 A manifold 204 is connected to one side of the condensate recovery tank 201, and a drain pipe 205 is fixedly connected to the lower end of the manifold 204. The drain pipe 205 passes through the chimney 1. At the same time, the condensate collected in the condensate recovery tank 201 can be discharged through the manifold 204 and the drain pipe 205.

[0046] Second embodiment: Combination Figure 5 and Figure 13This application discloses a moisture condensation and collection system for wet flue gas after desulfurization in a power plant, further comprising: a dual-channel spiral guide assembly 3 and a self-cleaning filter assembly 4. In practical application, the desulfurized flue gas is discharged through a chimney 1. During discharge, the flue gas first enters the lower flue gas inlet channel, and after being guided by the dual-channel spiral guide assembly 3, it rises in a spiral shape and is discharged, thereby improving the contact condensation effect between the flue gas and the inner wall of the upper centrifugal condensation channel. Simultaneously, it can throw the liquid droplets contained in the flue gas onto the inner wall of the upper centrifugal condensation channel under centrifugal force, and the condensate condensed on the inner wall of the upper centrifugal condensation channel can be collected and discharged, thus achieving the purpose of condensing and recovering moisture from the flue gas. Furthermore, during the flow and transport of the flue gas by the dual-channel spiral guide assembly 3, the self-cleaning filter assembly 4 further adsorbs and treats impurities and corrosive substances in the flue gas, greatly reducing the corrosiveness of the subsequent condensate, thereby improving the collection effect of the condensate.

[0047] Combination Figure 7 and Figure 8 The dual-channel spiral guide assembly 3 includes a dual-channel guide tube 301, a pair of exhaust pipes 302, and a centrifugal turbulence component. In practical applications, the flue gas inside the chimney 1 is spirally discharged through the dual-channel guide tube 301 and exhaust pipes 302. During the discharge process, the centrifugal turbulence component assists in the diffusion and intake of the flue gas, ensuring the effective flow guidance and transportation of the flue gas by the dual-channel spiral guide assembly 3.

[0048] Combination Figure 5 The dual-channel guide tube 301 is fixedly connected to the inner wall of the chimney 1, dividing the chimney 1 into a lower flue gas inlet channel and an upper centrifugal condensation channel. The lower flue gas inlet channel is used for conveying and guiding the flue gas, while the upper centrifugal condensation channel is used to convey the flue gas in a spiral diffusion state, which greatly improves the contact effect between the flue gas and the inner wall of the chimney 1, thereby improving the effect of condensing and recovering moisture in the flue gas.

[0049] Combination Figure 5 , Figure 8 and Figure 11 The dual-channel guide tube 301 includes a cylinder body 3011, a smoke inlet 3012, and a pair of diversion and limiting plates 3013. The cylinder body 3011 is hollow, and the smoke inlet 3012 is located at the center of the cylinder body 3011 with an opening at its lower end. By providing an opening at the lower end of the smoke inlet 3012, it is convenient for the flue gas in the lower smoke inlet channel to be transported along the smoke inlet 3012 into the dual-channel guide tube 301.

[0050] Combination Figure 8 and Figure 11A pair of diversion and limiting plates 3013 are circumferentially mirror-arranged inside the cylinder 3011, and the two ends of the pair of diversion and limiting plates 3013 are fixedly connected to the inner wall of the cylinder 3011 and the outer wall of the smoke inlet duct 3012, respectively. The smoke inlet duct 3012 guides and transports the flue gas in the lower smoke inlet channel, and the diversion and limiting plates 3013 guide and limit the flue gas in the cylinder 3011.

[0051] Specifically, the smoke inlet 3012 and a pair of diversion and limiting plates 3013 divide the cylinder 3011 into two guide chambers. The smoke inlet 3012, located inside the cylinder 3011, has a pair of circumferentially distributed smoke inlet holes on its outer side, which are connected to the two guide chambers respectively. By providing the pair of smoke inlet holes, the flue gas in the smoke inlet 3012 can be transported from bottom to top into the two guide chambers under pressure, and then discharged through the two guide chambers via a dual-channel system.

[0052] The combination of two guide chambers and a pair of exhaust pipes 302 can separate the flue gas into two streams, and the two streams of flue gas are discharged at an angle along the same direction of rotation. This allows the flue gas to present a stable spiral upward state in the upper centrifugal condensation channel, which improves the effect of subsequent condensation and recovery of moisture in the flue gas.

[0053] Combination Figure 7 A pair of exhaust pipes 302 are circumferentially mirror-image positioned above the dual-channel guide cylinder 301. The dual-channel guide cylinder 301 is used to guide the flue gas in the lower flue gas inlet channel in a dual-channel spiral manner. The pair of exhaust pipes 302 are respectively connected to the two guide chambers, and the pair of exhaust pipes 302 are positioned on the side of the guide chamber away from the flue gas inlet. By positioning the exhaust pipes 302 on the side of the guide chamber away from the flue gas inlet, the flue gas in the pair of guide chambers will exhibit a rotating flow state under the limiting effect of the guide chambers, thereby enabling the flue gas discharged from the pair of exhaust pipes 302 to be transported in a bolt-like manner within the upper centrifugal condensation channel.

[0054] Combination Figure 5 , Figure 7 and Figure 8 The dual-channel spiral guide assembly 3 also includes an inlet guide pipe 303 and a guide plate 304. The inlet guide pipe 303 is fixedly installed below the inlet stack 3012, and the guide plate 304 is sleeved on the outside of the inlet guide pipe 303 and fixedly connected to the inner wall of the chimney 1. The cooperation between the inlet guide pipe 303 and the guide plate 304 ensures that the flue gas in the lower inlet channel can only be transported to the inlet stack 3012 along the inlet guide pipe 303, thus avoiding turbulent flue gas flow.

[0055] Combination Figure 5 , Figure 6 and Figure 9A centrifugal turbulence component is fixedly installed at the center of the dual-channel guide tube 301 to perform centrifugal turbulence treatment on the flue gas in the upper centrifugal condensation channel. The centrifugal turbulence component includes a rotating shaft 305, a pair of turbulence plates 306, and an extraction impeller 307. The rotating shaft 305 is rotatably installed inside the flue gas inlet 3012, and the rotating shaft 305 assembles, fixes, and controls the pair of turbulence plates 306 and the extraction impeller 307.

[0056] Combination Figure 5 , Figure 6 and Figure 9 A pair of baffles 306 are symmetrically arranged at the top of the rotating shaft 305, and the pair of baffles 306 are correspondingly arranged with a pair of exhaust pipes 302. When the pair of exhaust pipes 302 discharges flue gas, the flue gas will blow against the baffles 306. When the pair of baffles 306 rotate under the influence of the airflow force of the pair of exhaust pipes 302, the rotation of the pair of baffles 306 can turbulentize the flue gas in the upper centrifugal condensation channel, so that the flue gas in the upper centrifugal condensation channel flows in a spiral diffusion shape, which improves the sufficient contact between the flue gas and the inner wall of the upper centrifugal condensation channel, and ensures the effect of condensing and recovering moisture in the flue gas.

[0057] Combination Figure 5 and Figure 9 The exhaust impeller 307 is fixedly installed at the lower end of the rotating shaft 305. Under the action of the baffle 306, the rotating shaft 305 drives the exhaust impeller 307 to rotate synchronously. The rotation of the exhaust impeller 307 can accelerate the rate at which the flue gas in the lower flue enters the flue gas inlet 3012.

[0058] Combination Figure 8 and Figure 9 The self-cleaning filter assembly 4 is installed inside the chimney 1. The self-cleaning filter assembly 4 includes a pair of filter guides 401 and a vibrating dust removal component. In practical applications, the filter guides 401 can filter dust from the flue gas discharged along the exhaust pipe 302, greatly reducing the impurity content in the subsequent condensate. This also reduces the risk of scale formation on the inner walls of the chimney 1 and the condensate recovery tank 201 due to impurities, shortening the cleaning and maintenance cycle of the condensate recovery tank 201. At the same time, the vibrating dust removal component can shake off the impurities filtered out of the filter guides 401, facilitating subsequent cleaning of the impurities.

[0059] Combination Figure 8 and Figure 9A pair of filter guide elements 401 and a pair of exhaust pipes 302 are correspondingly arranged to filter dust and adsorb corrosive substances in the flue gas transported within the dual-channel guide cylinder 301. Simultaneously, corrosive substances such as sulfur dioxide contained in the flue gas discharged along the filter guide elements 401 can be adsorbed by filling the exhaust pipes 402 with adsorption filter media. This significantly reduces the corrosiveness of the subsequent condensate, thereby reducing the risk of corrosion of the inner wall of the chimney 1 and the condensate recovery tank 201 by the condensate.

[0060] Combination Figure 9 A pair of filter guide elements 401 are fixedly installed in the two guide chambers and are correspondingly arranged with respect to the exhaust pipe 302. The side of each filter guide element 401 close to the exhaust pipe 302 is arranged in a mesh pattern, and a discharge hole is opened at the bottom of each filter guide element 401. The filter guide elements 401 filter the dust of the flue gas discharged along the exhaust pipe 302, which greatly reduces the impurity content in the subsequent condensate. At the same time, it reduces the risk of blockage in the condensate recovery tank 201 or scaling on the inner wall of the upper centrifugal condensate channel. The discharge hole at the bottom of the filter guide element 401 facilitates the collection and guidance of the falling impurities.

[0061] Combination Figure 9 A pair of waste discharge pipes 402 are fixedly connected to the lower part of the dual-channel guide tube 301. The waste discharge pipes 402 are connected to the material discharge hole at the bottom of the waste filter guide 401, and both waste discharge pipes 402 are installed through the chimney 1. The end of the waste discharge pipes 402 close to the material discharge hole is filled with adsorbent filter material, and the end of the waste discharge pipes 402 outside the chimney 1 is slidably inserted with a sealing plate 403. The waste discharge pipes 402 guide and discharge the impurities filtered in the waste filter guide 401, simplifying the process of cleaning the impurities in the waste filter guide 401. At the same time, the waste discharge pipes 402 can be conveniently assembled with adsorbent filter material. The sealing plate 403 can seal the waste discharge pipes 402, preventing the flue gas from being discharged outside the chimney 1 along the waste discharge pipes 402.

[0062] Specifically, activated carbon cotton can be used as the adsorption filter material. Activated carbon is attached to a non-adhesive cotton substrate using a polymer binder, resulting in uniformly distributed micropores and a fast adsorption rate, effectively removing harmful gases such as sulfur dioxide. Simultaneously, the structure is designed with permeable pores, ensuring full contact between the flue gas and the adsorption layer without absorbing water, making it suitable for adsorbing and purifying flue gas with high humidity.

[0063] Combination Figure 9 , Figure 10 , Figure 11 and Figure 12The vibrating dust removal component is disposed inside the dual-channel guide tube 301 and is used to vibrate and remove dust from the filter guide component 401. The vibrating dust removal component includes a pair of vibrating rods 404, multiple striking blocks 405, multiple sets of return springs 406, and collision balls 407.

[0064] Among them, a pair of diversion limiting plates 3013 are provided with vibration avoidance grooves, which provide vibration avoidance space for the vibration rod 404.

[0065] Combination Figure 9 , Figure 10 , Figure 11 and Figure 12 The vibrating rod 404 is inserted into the vibration relief groove. At the same time, the vibrating rod 404 connects and fixes multiple striking blocks 405 and collision balls 407, which facilitates the subsequent synchronous control of the vibrating rod 404 and striking blocks 405 by applying force to the collision balls 407.

[0066] Combination Figure 9 , Figure 10 , Figure 11 and Figure 12 Multiple striking blocks 405 are fixedly installed on the side of the vibrating rod 404 close to the filter guide 401. By striking the filter guide 401 with the vibration of the vibrating rod 404, the multiple striking blocks 405 vibrate and shake the filter guide 401 to remove dust, thus preventing the filter guide 401 from being unable to exhaust air due to impurities during actual application.

[0067] Combination Figure 9 , Figure 10 , Figure 11 and Figure 12 Multiple sets of return springs 406 are disposed on the other side of the vibrating rod 404. The multiple sets of return springs 406 provide support and limit the movement of the vibrating rod 404.

[0068] Combination Figure 9 , Figure 10 , Figure 11 and Figure 12 The collision ball 407 is fixedly connected to one end of the vibrating rod 404 near the rotating shaft 305. The vibrating dust collection component also includes a drive impeller 408, which is fixedly sleeved on the outside of the rotating shaft 305 and adapted to the collision ball 407. During the rotation of the rotating shaft 305, the drive impeller 408 will be driven to rotate, and the vibration rod 404 will be driven to vibrate by controlling the swing of the collision ball 407 through the drive impeller 408.

[0069] The specific working principle of this application is as follows: First, the sealing plate 403 is opened to clean the impurities in the waste discharge pipe 402, and new adsorption filter media is replaced by pulling along the waste discharge pipe 402. Then, the flue gas after desulfurization is transported to the chimney 1 through the flue gas inlet 101, where it is temporarily stored in the lower flue gas inlet channel. During the continuous transport of the flue gas, the air pressure in the lower flue gas inlet channel continuously increases. Under the action of its own upward force and air pressure, the flue gas is transported along the guide plate 304, the inlet stack 3012, and the inlet hole to the two guide chambers respectively.

[0070] Subsequently, the flue gas continues to flow into the filter guide 401. After being filtered by the filter guide 401 and adsorbed by the adsorption filter material, the flue gas discharged along the pair of exhaust pipes 302 in a double stream and in the same direction of rotation blows towards the baffle 306, causing the baffle 306 to rotate under the continuous action of the flue gas. The rotation of the baffle 306 drives the rotating shaft 305 and the exhaust impeller 307 to rotate, thereby accelerating the guiding and conveying process of the flue gas in the lower flue gas inlet channel. Moreover, the rotation of the baffle 306 causes the flue gas in the upper centrifugal condenser channel to rise in a spiral diffusion pattern, thereby improving the contact between the flue gas and the inner wall of the upper centrifugal condenser channel and improving the effect of condensing and recovering moisture in the flue gas.

[0071] Then, the condensate on the inner wall of the upper centrifugal condensation channel can be collected and discharged through the cooperation of the condensation recovery tank 201, the collection pipe 204 and the drain pipe 205.

[0072] Furthermore, the rotation of the shaft 305 drives the impeller 408 to rotate synchronously. The rotation of the impeller 408 continuously controls the oscillation of the collision ball 407, which in turn drives the vibrating rod 404 to oscillate continuously. The oscillation of the vibrating rod 404 drives the striking block 405 to strike the filter guide 401, causing the filter guide 401 to vibrate and thus achieve the function of dust removal through vibration. This ensures the continuity of dust filtration in the flue gas by the filter guide 401. When it is necessary to clean the impurities in the filter guide 401, the sealing plate 403 can be opened, and then the filter guide 401 and the discharge pipe 402 can be cleaned. The adsorption filter material can also be replaced. This cleaning and replacement operation can be completed outside the chimney 1, making the self-cleaning filter assembly 4 easy to clean and replace.

[0073] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant, characterized in that, include: Chimney (1); A flow guiding and recovery assembly (2) is installed inside the chimney (1). The flow guiding and recovery assembly (2) includes a condensation recovery tank (201), a baffle plate (202), and multiple auxiliary condensation plates (203). The condensation recovery tank (201) is fixedly connected to the inner wall of the chimney (1) and cooperates with the inner wall of the chimney (1) to form a condensate collection channel. The baffle plate (202) is fixedly installed above the condensation recovery tank (201) and is inclined toward the inner wall of the chimney (1). The multiple auxiliary condensation plates (203) are fixedly connected to the side of the baffle plate (202) close to the condensation recovery tank (201). A dual-channel spiral guide assembly (3) is installed inside the chimney (1). The dual-channel spiral guide assembly (3) includes a dual-channel guide cylinder (301), a pair of exhaust pipes (302), and a centrifugal turbulence component. The dual-channel guide cylinder (301) is fixedly connected to the inner wall of the chimney (1). The pair of exhaust pipes (302) are circumferentially mirrored above the dual-channel guide cylinder (301) for discharging flue gas in a dual-channel spiral. The centrifugal turbulence component is used to centrifuge turbulence treatment of the flue gas in the upper centrifugal condensation channel. The self-cleaning filter assembly (4) is disposed inside the dual-channel guide tube (301). The self-cleaning filter assembly (4) includes a pair of filter guides (401) and a vibrating dust removal component. The pair of filter guides (401) are correspondingly disposed with a pair of exhaust pipes (302). The vibrating dust removal component is used to vibrate and remove dust from the filter guides (401).

2. The moisture condensation and collection system in wet flue gas after desulfurization in a power plant according to claim 1, characterized in that: At least one smoke inlet (101) is provided below the chimney (1), and a smoke outlet (102) is provided above the chimney (1). The smoke inlet (101) and the smoke outlet (102) are respectively connected to the lower smoke inlet channel and the upper centrifugal condenser channel.

3. The moisture condensation and collection system in the wet flue gas after desulfurization in a power plant according to claim 1, characterized in that: The condensation recovery tank (201) has an L-shaped cross-section and is arranged in a spiral or annular shape. The inner wall of the condensation recovery tank (201) is provided with an anti-corrosion coating.

4. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 3, characterized in that: The density of the condensation recovery tank (201) gradually increases as the horizontal height increases, and the length of the multiple auxiliary condensation plates (203) gradually decreases from the inside to the outside. A collection pipe (204) is connected to one side of the condensation recovery tank (201), and a drain pipe (205) is fixedly connected to the lower end of the collection pipe (204).

5. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 1, characterized in that: The dual-channel guide tube (301) divides the chimney (1) into a lower flue gas inlet channel and an upper centrifugal condensation channel. The dual-channel guide tube (301) includes a cylinder (3011), a flue gas inlet (3012), and a pair of diversion limiting plates (3013). The cylinder (3011) is hollow. The flue gas inlet (3012) is located at the center of the cylinder (3011) and has an opening at the lower end. The pair of diversion limiting plates (3013) are circumferentially mirror-arranged inside the cylinder (3011), and the two ends of the pair of diversion limiting plates (3013) are fixedly connected to the inner wall of the cylinder (3011) and the outer wall of the flue gas inlet (3012), respectively.

6. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 5, characterized in that: The inlet duct (3012) and a pair of diversion limiting plates (3013) divide the cylinder (3011) into two flow guiding cavities. The inlet duct (3012) has a pair of circumferentially distributed smoke inlet holes on the outer side of one end inside the cylinder (3011). The pair of smoke inlet holes are respectively connected to the two flow guiding cavities. The pair of exhaust pipes (302) are respectively connected to the two flow guiding cavities, and the pair of exhaust pipes (302) are located on the side of the flow guiding cavity away from the smoke inlet holes.

7. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 6, characterized in that: The dual-channel spiral guide assembly (3) further includes a smoke inlet guide pipe (303) and a guide plate (304). The smoke inlet guide pipe (303) is fixedly installed below the smoke inlet duct (3012), and the guide plate (304) is sleeved on the outside of the smoke inlet guide pipe (303) and fixedly connected to the inner wall of the chimney (1).

8. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 5, characterized in that: The centrifugal turbulence component includes a rotating shaft (305), a pair of turbulence plates (306), and an exhaust impeller (307). The rotating shaft (305) is rotatably disposed inside the smoke inlet (3012). The pair of turbulence plates (306) are symmetrically disposed at the top of the rotating shaft (305), and the pair of turbulence plates (306) are correspondingly disposed with a pair of exhaust pipes (302). The exhaust impeller (307) is fixedly disposed at the lower end of the rotating shaft (305).

9. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 8, characterized in that: A pair of filter guides (401) are fixedly installed in two guide cavities and are corresponding to the exhaust pipe (302). The side of the filter guides (401) close to the exhaust pipe (302) is arranged in a mesh pattern, and the bottom of the filter guides (401) is provided with a discharge hole.

10. A moisture condensation and collection system for wet flue gas after desulfurization in a power plant according to claim 9, characterized in that: A pair of discharge pipes (402) are fixedly connected to the bottom of the dual-channel guide tube (301). The discharge pipes (402) are connected to the material drop hole at the bottom of the filter guide (401). Both discharge pipes (402) penetrate the chimney (1). The end of the discharge pipes (402) close to the material drop hole is filled with adsorbent filter material. The end of the discharge pipes (402) outside the chimney (1) is slidably inserted with a sealing plate (403).

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