Spray desulfurization and dust removal equipment with wastewater recovery structure and use method

Abstract

The present invention discloses a spray desulfurization and dust removal device with a wastewater recovery structure and a method for using the device, which relates to the technical field of desulfurization equipment, and includes a spray barrel, a wastewater recovery seat and a driving tipping seat, wherein the bottom end of the spray barrel is provided with a wastewater recovery seat, the driving tipping seat is provided on the bottom wall of the wastewater recovery seat, and the circulating liquid guide frame and the driving tipping seat are connected via a rotating shaft. The present invention provides a precipitation recovery component on the inner side of the wastewater recovery seat, and the chemical reagent in the precipitation reagent storage tank is added into the circulating liquid guide frame to react with sulfate in the waste liquid to generate an insoluble precipitate. In the spray desulfurization and dust removal process, adding reagents such as calcium salts and barium salts can not only promote the precipitation of sulfates, but also improve the efficiency of desulfurization and dust removal. The reagents react with harmful substances such as sulfur dioxide in the flue gas to generate insoluble compounds, thereby more effectively removing pollutants in the flue gas, and ensuring that the quality of the absorption liquid meets the requirements of recycling.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization equipment, and in particular to a spray desulfurization and dust removal equipment with a wastewater recovery structure and a use method thereof. Background Art

[0002] Spray desulfurization and dust removal equipment is an environmental protection equipment that integrates desulfurization and dust removal functions. It mainly uses alkaline water or other absorption liquid to contact dust and sulfur-containing flue gas by spraying to achieve the purpose of dust removal and desulfurization. Spray desulfurization and dust removal equipment is widely used in metallurgy, mining, building materials, casting, chemical industry, tobacco, asphalt, cement, grain, mechanical processing, boiler and other industries. It is particularly suitable for treating high-sulfur and high-dust flue gas, and can effectively reduce the concentration of sulfur oxides and particulate matter in the flue gas to meet environmental emission standards.

[0003] The defects of desulfurization equipment in the prior art are:

[0004] 1. Patent document KR101922362B1 discloses a spray pipe and a desulfurization device equipped with the spray pipe. The desulfurization device reacts and removes sulfate in the waste liquid. The deposition of sulfate and other salts inside the equipment will cause the performance of the equipment to decline and even cause failures, increase the risk of scaling and corrosion inside the desulfurization and dust removal equipment, and is not conducive to the subsequent recovery and purification of desulfurization wastewater.

[0005] 2. Patent document CN208975512U discloses a spray desulfurization device, which cannot add acidic or alkaline substances in appropriate amounts according to the pH value and composition of the absorption liquid for neutralization and adjustment, so as to keep the absorption liquid within a suitable pH range for reuse in desulfurization and dust removal, and cannot ensure that the quality of the absorption liquid meets the requirements of recycling.

[0006] 3. Patent document CN218853941U discloses a three-layer spray desulfurization tower, which cannot clean a small amount of sulfate or other reaction products attached to the inner wall of the spray cylinder, and cannot ensure the efficient and stable operation of the desulfurization and dust removal equipment. The desulfurization and dust removal efficiency of the desulfurization and dust removal equipment is low.

[0007] 4. Patent document CN213853872U discloses a safe, environmentally friendly and efficient dust removal spray desulfurization equipment. The desulfurization equipment cannot squeeze and discharge the liquid in the desulfurization product. The incompletely reacted alkaline substances or water are not conducive to recovery and reuse in the desulfurization and dust removal process. The utilization efficiency of the desulfurization absorption liquid is poor, and the continuous desulfurization and dust removal reaction cannot be guaranteed. Summary of the invention

[0008] The object of the present invention is to provide a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a spray desulfurization and dust removal equipment with a wastewater recovery structure, comprising a spray cylinder, a wastewater recovery seat and a driving tipping seat, wherein the bottom end of the spray cylinder is equipped with a wastewater recovery seat, and the top of the wastewater recovery seat is penetrated with a recovery opening;

[0010] A sedimentation recovery component is arranged on the inner side of the wastewater recovery seat, and the sedimentation recovery component includes a driving tipping seat, a feed groove, a threaded hinged seat, a circulating liquid guiding frame, a sedimentation reagent storage tank and a supply valve. The driving tipping seat is installed on the bottom wall of the wastewater recovery seat, the feed groove is opened on the top of the driving tipping seat, the threaded hinged seat is movably installed on the inner side of the feed groove, the circulating liquid guiding frame is connected to the driving tipping seat by a rotating shaft, the sedimentation reagent storage tank is installed on the outer side of the wastewater recovery seat, the supply valve is installed on the outer end of the sedimentation reagent storage tank, and the supply valve is located above the circulating liquid guiding frame.

[0011] Preferably, a threaded rod is installed on the inner side of the feed groove, a flip motor is installed on the front end of the driving tilting seat, and the output end of the flip motor is connected to the input end of the threaded rod, the threaded hinge seat is sleeved on the outer side of the threaded rod, and the outer end of the threaded hinge seat slides on the inner wall of the feed groove, and a rotating support column is installed on the inner side of the threaded hinge seat, and the bottom end of the rotating support column is hinged to the bottom end of the circulating liquid guide frame.

[0012] Preferably, a mixing reaction motor is installed on the outer side of the circulating liquid guiding frame, a rotating space groove is opened on the inner wall of one side of the wastewater recovery seat, a mixing liquid rack is installed on the output end of the mixing reaction motor, cleaning nozzles are symmetrically installed on the inner wall of the circulating liquid guiding frame, a long groove is opened through the back of the circulating liquid guiding frame, a separation filter is installed on the inner side of the long groove, a sediment discharge valve pipe is installed on the outer side of the circulating liquid guiding frame, a slag discharge barrel is installed on the outer side of the wastewater recovery seat, and the slag discharge barrel cooperates with the sediment discharge valve pipe.

[0013] Preferably, a top cone is installed at the top of the spray cylinder, an exhaust pipe is installed on the top of the top cone, an odor adsorption layer is installed on the inner wall of the spray cylinder, a spray rotating motor is symmetrically installed on the outside of the spray cylinder, a spray disk is installed at the output end of the spray rotating motor, a water mist nozzle is installed at the output end of the spray disk, and a smoke inlet is installed at the bottom of the outer end of the spray cylinder.

[0014] Preferably, a scraping and recovery slide rail is installed on the inner wall of the spray barrel, an electric slider is embedded on the outer side of the scraping and recovery slide rail, a stable socket is installed at the output end of the electric slider, and a product scraping ring is installed on the opposite side of the stable socket.

[0015] Preferably, a guide inclined plate is symmetrically installed on the inner wall of the top end of the wastewater recovery seat, an inclined guide rail is installed at the bottom of the guide inclined plate, a distance adjusting hand lever is installed at the output end of the inclined guide rail, a liquid pressure plate is installed at the telescopic end of the distance adjusting hand lever, a protective pressure pad is installed at the bottom of the liquid pressure plate, an electric rotating seat is installed on the inner wall of the wastewater recovery seat, a liquid pressure filter plate is installed at the output end of the electric rotating seat, and a filtrate hole is opened through the top of the liquid pressure filter plate.

[0016] Preferably, a return liquid collection frame is installed at the rear end of the wastewater recovery seat, a fine dust filter plate is installed on the inner wall of the return liquid collection frame, an ion exchange resin plate is installed on the inner wall of the return liquid collection frame, a water quality monitor is installed on the inner wall of the return liquid collection frame, a replenishing liquid tank is installed on the outside of the return liquid collection frame, a replenishing valve pipe is installed on the output end of the replenishing liquid tank, a circulating pump is installed on the outside of the return liquid collection frame, and the output end of the circulating pump is connected to the input end of the spray plate through a pipeline.

[0017] Preferably, a spray controller is installed on the front of the wastewater recovery seat, and the spray controller consists of a spray desulfurization module, a waste liquid recovery module and a waste liquid data analysis module. The spray desulfurization module is electrically connected to the spray rotating motor, the electric slider and the circulating pump. The waste liquid recovery module is electrically connected to the inclined guide rail, the distance adjustment handle, the sedimentation recovery assembly and the return liquid collection frame. The waste liquid data analysis module receives the output signal of the water quality monitor, and the waste liquid data analysis module is electrically connected to the neutralization replenishment unit.

[0018] A method for using a spray desulfurization and dust removal device with a wastewater recovery structure is applicable to a spray desulfurization and dust removal device with a wastewater recovery structure. Preferably, the method for using the desulfurization and dust removal device comprises the following steps:

[0019] Step S1, after the flue gas enters the spray barrel, the water mist nozzle evenly sprays the absorption liquid into the barrel to form a water film or water mist. During the process of the flue gas rotating and rising in the barrel, it will fully contact with the spray liquid and undergo a chemical reaction. The sulfur oxides in the flue gas will be absorbed by the absorption liquid and converted into sulfates, and the purified gas will be discharged into the atmosphere through the exhaust pipe;

[0020] Step S2, the chemical reagent in the precipitation reagent storage tank is added into the circulating liquid guide frame to react with the sulfate in the waste liquid to generate an insoluble precipitate, the turning motor is operated to turn the circulating liquid guide frame backward, and the waste liquid is filtered through the separation filter and poured into the return liquid collection frame;

[0021] Step S3, adding an appropriate amount of acidic or alkaline substances according to the pH value and composition of the absorption liquid for neutralization and adjustment, and regularly replenishing new absorbent according to the concentration of the absorption liquid.

[0022] Preferably, in step S1, the following steps are also included:

[0023] Step S11, dust particles in the flue gas are also captured by the water film and fall with the water flow, and the inclined guide rail and the distance adjustment lever cooperate to drive the liquid pressure plate to squeeze the liquid in the sulfate, and the squeezed liquid falls into the circulating liquid guide frame;

[0024] In the step S2, the following steps are also included:

[0025] Step S21, the precipitate filtered out from the waste liquid is discharged from the slag discharge barrel through the precipitate discharge valve pipe.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention provides a precipitation recovery component on the inner side of the wastewater recovery seat, and the chemical reagent in the precipitation reagent storage tank is added to the circulating liquid guide frame to react with the sulfate in the waste liquid to generate an insoluble precipitate. The flip motor works to flip the circulating liquid guide frame backward, and the waste liquid is filtered through the separation filter and poured into the return liquid collection frame. Adding reagents such as calcium salts and barium salts in the spray desulfurization and dust removal process can not only promote the precipitation of sulfate, but also improve the efficiency of desulfurization and dust removal. The reagents react with harmful substances such as sulfur dioxide in the flue gas to generate insoluble compounds, thereby more effectively removing pollutants in the flue gas. The deposition of salts such as sulfate inside the equipment will cause the performance of the equipment to decline and even cause failures. The reaction precipitation and separation treatment of sulfate in the waste liquid reduces the risk of scaling and corrosion inside the desulfurization and dust removal equipment, reduces the difficulty of subsequent wastewater recovery and purification, and resource utilization and reduction of environmental pollution promote the coordinated development of economy, society and environment, ensuring that the quality of the absorption liquid meets the requirements of recycling.

[0028] 2. The present invention installs a return liquid collection frame at the rear end of the wastewater recovery seat, utilizes the selective adsorption capacity of the ion exchange resin plate to exchange the sulfate ions in the wastewater with other ions on the resin to achieve the purpose of removing sulfate, and adds an appropriate amount of acidic or alkaline substances according to the pH value and composition of the absorption liquid for neutralization and adjustment, so that the absorption liquid is kept within a suitable pH range so that it can be used again for desulfurization and dust removal. The water quality of the absorption liquid is monitored, including indicators such as pH value, sulfate concentration, and suspended matter content, to further ensure that the quality of the absorption liquid meets the requirements of recycling and reuse. Since the absorption liquid consumes part of the alkaline substances during the reaction process, new absorbent is added to maintain the desulfurization capacity of the absorption liquid. The multiple removal and filtration of impurities in the wastewater after desulfurization ensure the good recycling performance of the absorption liquid.

[0029] 3. The present invention installs a product scraper ring on the opposite side of the stable seat. During the desulfurization process of the spray desulfurization and dust removal equipment, a small amount of sulfate or other reaction products will be adsorbed on the inner wall of the spray cylinder due to uneven distribution of the spray liquid, too fast flue gas flow speed or the inner wall material of the cylinder. The electric slider slides on the scraping and recovery slide rail to make the product scraper ring scrape the products attached to the inner wall of the spray cylinder. The scraping and cleaning of the products attached to the inner wall ensures the efficient and stable operation of the desulfurization and dust removal equipment, ensures the desulfurization and dust removal efficiency of the desulfurization and dust removal equipment, makes the precipitation recovery component collect and separate the desulfurization reaction products more thoroughly, prevents the residual products from falling in the subsequent wastewater recovery process and causing adverse effects on the wastewater recovery effect, and further improves the recovery quality of the desulfurization wastewater.

[0030] 4. The present invention installs a liquid pressure filter plate at the output end of the electric rotary seat, and the inclined guide rail cooperates with the distance adjustment hand lever to drive the liquid pressure plate to squeeze the liquid in the sulfate, and the squeezed liquid falls into the circulating liquid guide frame. The liquid in the sulfate can be squeezed to recover the incompletely reacted alkaline substances or water therein and reused in the desulfurization and dust removal process, thereby reducing the consumption of waste liquid and the discharge of waste water, and improving the utilization efficiency of the desulfurization absorption liquid. During the squeezing process, some of the incompletely reacted alkaline substances are released back into the circulating liquid, which helps to maintain the concentration of the alkaline substances in the spray liquid and ensure the continuous desulfurization and dust removal reaction. The extrusion process removes impurities and sediments in the circulating liquid to keep the spray system unobstructed, thereby improving the stability and reliability of the spray desulfurization and dust removal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the front internal structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0034] Figure 4 It is a schematic diagram of the three-dimensional structure of the precipitation recovery component of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of the circulating liquid guide frame of the present invention;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the scraper ring of the product of the present invention;

[0037] Figure 7 It is a schematic diagram of the connection structure of the liquid pressure plate of the present invention;

[0038] Figure 8 This is a schematic diagram of the internal structure of the liquid return collection frame of the present invention;

[0039] Fig. 9 It is a system diagram of the spray controller of the present invention;

[0040] Fig.10 It is the work flow chart of the present invention.

[0041] In the figure: 1. Spraying cylinder; 2. Wastewater recovery seat; 3. Scraping and recovery slide rail; 4. Driving tipping seat; 5. Guide inclined plate; 6. Circulating liquid guide frame; 7. Return liquid collection frame; 8. Top cone cylinder; 9. Exhaust cylinder; 10. Odor adsorption layer; 11. Spray rotating motor; 12. Spray plate; 13. Water mist nozzle; 14. Smoke inlet; 15. Spray controller; 16. Slag discharge cylinder; 17. Rotating space slot; 18. Electric rotating seat; 19. Liquid pressure filter plate; 20. Filtrate hole; 21. Precipitation reagent storage tank; 22. Supply valve; 23. Feed slot; 24. Threaded rod; 25. Flip motor; 26. Threaded hinge seat; 27. Rotating support column; 28. Electric slider; 29. ​​Stable seat; 30. Product scraper ring; 31. Inclined guide rail; 32. Adjustable distance lever; 33. Liquid pressure plate; 34. Protective pressure pad; 35. Mixing reaction motor; 36. Mixing rack; 37. Cleaning nozzle; 38. Recovery outlet; 39. Long groove; 40. Separation filter; 41. Sediment discharge valve pipe; 42. Fine dust filter plate; 43. Ion exchange resin plate; 44. Water quality monitor; 45. Supplementary liquid tank; 46. Feed valve pipe; 47. Circulation pump. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection or a movable connection, or a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an embodiment provided by the present invention: a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use;

[0046] The spray barrel 1 includes a wastewater recovery seat 2, a circulating liquid guide frame 6 and a precipitation reagent storage tank 21. The bottom end of the spray barrel 1 is equipped with a wastewater recovery seat 2. The top of the wastewater recovery seat 2 is penetrated with a recovery opening 38. The inner side of the wastewater recovery seat 2 is provided with a precipitation recovery component. The precipitation recovery component includes a driving tipping seat 4, a feed groove 23, a threaded hinge seat 26, a circulating liquid guide frame 6, a precipitation reagent storage tank 21 and a supply valve 22. The driving tipping seat 4 is installed on the bottom wall of the wastewater recovery seat 2. The feed groove 23 is opened on the top of the driving tipping seat 4. The threaded hinge seat 26 is movably installed on the inner side of the feed groove 23, the circulating liquid guide frame 6 is connected to the driving tipping seat 4 through a rotating shaft, the precipitation reagent storage tank 21 is installed on the outer side of the wastewater recovery seat 2, the supply valve 22 is installed on the outer end of the precipitation reagent storage tank 21, and the supply valve 22 is located above the circulating liquid guide frame 6, and a mixing reaction motor 35 is installed on the outer side of the circulating liquid guide frame 6. A rotating space groove 17 is opened on the inner wall of one side of the wastewater recovery seat 2, and a mixing liquid rack 36 is installed at the output end of the mixing reaction motor 35;

[0047] The wastewater recovery seat 2 is installed at the bottom of the spray barrel 1. The desulfurized wastewater and products in the spray barrel 1 fall into the wastewater recovery seat 2 through the recovery port 38. The precipitation reagent storage tank 21 stores calcium salt or barium salt. The chemical reagent in the precipitation reagent storage tank 21 is quantitatively added to the circulating liquid guide frame 6 through the supply valve 22 to react with the sulfate in the waste liquid to generate an insoluble precipitate. The mixing reaction motor 35 drives the mixing liquid frame 36 to rotate to stir the waste liquid and the chemical reagent so that the two are fully mixed. After mixing for a fixed time, the flip motor 25 works to flip the circulating liquid guide frame 6 backward. When the circulating liquid guide frame 6 flips, the rotating space tank 17 is mixed. The reaction motor 35 provides a moving space and will not adversely affect the rotation process of the circulating liquid guide frame 6. The addition of reagents such as calcium salts and barium salts in the spray desulfurization and dust removal process can not only promote the precipitation of sulfates, but also improve the efficiency of desulfurization and dust removal. The reagents react with harmful substances such as sulfur dioxide in the flue gas to generate insoluble compounds, thereby more effectively removing pollutants in the flue gas. By separating and recovering sulfates in the waste liquid, sulfates that may have been discharged with wastewater can be converted into valuable resources, realizing the conversion of waste into resources, effectively reducing sulfate pollution to the environment, and protecting the ecological environment.

[0048] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 , a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use;

[0049] It includes a driving tipping seat 4, a circulating liquid guide frame 6 and a sediment discharge valve pipe 41, a feed slot 23 is provided at the top of the driving tipping seat 4, a threaded hinge seat 26 is movably installed on the inner side of the feed slot 23, the circulating liquid guide frame 6 and the driving tipping seat 4 are connected by a rotating shaft, a threaded rod 24 is installed on the inner side of the feed slot 23, a flip motor 25 is installed on the front end of the driving tipping seat 4, and the output end of the flip motor 25 is connected to the input end of the threaded rod 24, the threaded hinge seat 26 is sleeved on the outer side of the threaded rod 24, and the outer end of the threaded hinge seat 26 slides on the inner wall of the feed slot 23, a rotating support column 27 is installed on the inner side of the threaded hinge seat 26, and the bottom end of the rotating support column 27 is hinged to the bottom end of the circulating liquid guide frame 6;

[0050] A cleaning nozzle 37 is symmetrically installed on the inner wall of the circulating liquid guide frame 6, a long groove 39 is penetrated through the back of the circulating liquid guide frame 6, a separation filter 40 is installed on the inner side of the long groove 39, a sediment discharge valve pipe 41 is installed on the outer side of the circulating liquid guide frame 6, and a slag discharge cylinder 16 is installed on the outer side of the wastewater recovery seat 2, and the slag discharge cylinder 16 cooperates with the sediment discharge valve pipe 41;

[0051] The flip motor 25 drives the threaded rod 24 to rotate so that the threaded hinge seat 26 can adjust its position in the horizontal direction on the inner side of the feed groove 23. When the threaded hinge seat 26 moves horizontally, the working support angle of the rotating support column 27 is continuously rotated to realize the pushing of the bottom end of the circulating liquid guiding frame 6. The circulating liquid guiding frame 6 is flipped backward along the rotating axis direction between the circulating liquid guiding frame 6 and the driving tilting seat 4. The long groove 39 provides an installation position for the separation filter 40. After the circulating liquid guiding frame 6 is flipped into place, the waste liquid is filtered by the separation filter 40 and poured into the return liquid collection frame 7. Sulfate and other reaction precipitates are blocked by the separation filter 40. After the waste liquid is discharged, the circulating liquid guiding frame 6 is reset, and the precipitates filtered out of the waste liquid are discharged from the slag unloading barrel 16 through the precipitate discharge valve pipe 41. The cleaning nozzle 37 works to make the external water source flush the circulating liquid guiding frame 6 after the waste liquid is discharged to rinse the residue clean.

[0052] See also Figure 1 , Figure 2 and Figure 6 , a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use;

[0053] It includes a top cone 8, a spray disc 12 and a product scraper ring 30. The top of the spray barrel 1 is equipped with a top cone 8, the top of the top cone 8 is equipped with an exhaust pipe 9, the inner wall of the spray barrel 1 is equipped with an odor adsorption layer 10, the outer side of the spray barrel 1 is symmetrically equipped with a spray rotating motor 11, the output end of the spray rotating motor 11 is equipped with a spray disc 12, the output end of the spray disc 12 is equipped with a water mist nozzle 13, the outer bottom of the spray barrel 1 is equipped with a smoke inlet 14, the inner wall of the spray barrel 1 is equipped with a scraping and recycling slide rail 3, the outer side of the scraping and recycling slide rail 3 is embedded with an electric slider 28, the output end of the electric slider 28 is equipped with a stable connection seat 29, and the opposite side of the stable connection seat 29 is equipped with a product scraper ring 30;

[0054] After the flue gas enters the spray barrel 1 through the flue gas inlet 14, the water mist nozzle 13 evenly sprays the absorption liquid into the barrel to form a water film or water mist. During the process of the flue gas rotating and rising in the barrel, it will fully contact with the spray liquid and undergo a chemical reaction. The sulfur oxides in the flue gas will be absorbed by the absorption liquid and converted into sulfates. The dust in the flue gas will fall into the wastewater recovery seat 2 with the water flow. The purified gas will be subjected to odor absorption treatment by the odor absorption layer 10 and then discharged into the atmosphere through the exhaust pipe 9.

[0055] During the desulfurization process of the spray desulfurization and dust removal equipment, a small amount of sulfate or other reaction products will be adsorbed on the inner wall of the spray cylinder 1 due to uneven distribution of the spray liquid, too fast flue gas flow speed or the material of the inner wall of the cylinder. The stable connector 29 ensures the stability of the connection between the electric slider 28 and the product scraper ring 30. The electric slider 28 slides on the scraping and recovery slide rail 3 to enable the product scraper ring 30 to scrape the products attached to the inner wall of the spray cylinder 1. The scraped products fall into the circulating liquid guide frame 6 for reaction separation treatment, thereby preventing the residual products from falling during the subsequent wastewater recovery process and causing adverse effects on the wastewater recovery effect.

[0056] See also Figure 2 , Figure 3 and Figure 7 , a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use;

[0057] It includes a guide inclined plate 5, a liquid pressure plate 33 and a circulating liquid guide frame 6. The guide inclined plate 5 is symmetrically installed on the inner wall of the top of the wastewater recovery seat 2. The bottom of the guide inclined plate 5 is installed with an inclined guide rail 31. The output end of the inclined guide rail 31 is installed with a distance adjustment hand lever 32. The telescopic end of the distance adjustment hand lever 32 is installed with a liquid pressure plate 33. The bottom of the liquid pressure plate 33 is installed with a protective pressure pad 34. An electric rotating seat 18 is installed on the inner wall of the wastewater recovery seat 2. The output end of the electric rotating seat 18 is installed with a liquid pressure filter plate 19. The top of the liquid pressure filter plate 19 is penetrated with a filtrate hole 20. The inner side of the wastewater recovery seat 2 is provided with a sedimentation recovery component. The driving tipping seat 4 is installed on the bottom wall of the wastewater recovery seat 2. The circulating liquid guide frame 6 is connected to the driving tipping seat 4 through a rotating shaft.

[0058] The guide inclined plate 5 guides the desulfurization wastewater, desulfurization products and residual scraping products to fall, while ensuring the stability of the inclined guide rail 31 and the adjustable distance handle 32 during operation. The inclined guide rail 31 cooperates with the adjustable distance handle 32 to drive the liquid pressure plate 33 to move so that the protective pressure pad 34 squeezes the liquid in the sulfate. The squeezed liquid falls into the circulating liquid guide frame 6 through the filtrate hole 20. The liquid pressure filter plate 19 filters and blocks the sulfate product. The liquid in the sulfate can be squeezed to recover the incompletely reacted alkaline substances or water therein and reuse them in the desulfurization and dust removal process. Part of the incompletely reacted alkaline substances are released into the circulating liquid during the squeezing process, which helps to maintain the concentration of alkaline substances in the spray liquid. The extrusion process removes impurities and sediments in the circulating liquid to keep the spray system unobstructed. The recovered liquid can be recycled in the spray system, reducing the need to add new liquid, thereby reducing the operating cost of the equipment. The clean circulating liquid can also more effectively capture and remove dust particles and sulfides in the flue gas.

[0059] After the liquid in the sulfate product is squeezed out, the electric rotation drives the liquid pressure filter plate 19 to flip upward. The liquid pressure filter plate 19 is high in the middle and low at the outer end. The sulfate product and other filtered impurities are discharged through the long strip opening that runs through the outer side of the wastewater recovery seat 2.

[0060] See also Figure 1 , Figure 2 , Figure 8 and Fig. 9 , a spray desulfurization and dust removal equipment with a wastewater recovery structure and a method of use;

[0061] It includes a return liquid collection frame 7, a water quality monitor 44 and a spray controller 15. A sediment recovery component is arranged on the inner side of the wastewater recovery seat 2. A return liquid collection frame 7 is installed at the rear end of the wastewater recovery seat 2. A fine dust filter plate 42 is installed on the inner wall of the return liquid collection frame 7. An ion exchange resin plate 43 is installed on the inner wall of the return liquid collection frame 7. A water quality monitor 44 is installed on the inner wall of the return liquid collection frame 7. A replenishing liquid tank 45 is installed on the outer side of the return liquid collection frame 7. A replenishing valve pipe 46 is installed on the output end of the replenishing liquid tank 45. A circulating pump 47 is installed on the outer side of the return liquid collection frame 7, and the output end of the circulating pump 47 is connected to the input end of the spray plate 12 through a pipeline.

[0062] A spray controller 15 is installed on the front of the wastewater recovery seat 2. The spray controller 15 consists of a spray desulfurization module, a waste liquid recovery module and a waste liquid data analysis module. The spray desulfurization module is electrically connected to the spray rotating motor 11, the electric slider 28 and the circulating pump 47. The waste liquid recovery module is electrically connected to the inclined guide rail 31, the distance adjustment lever 32, the sedimentation recovery component and the return liquid collection frame 7. The waste liquid data analysis module receives the output signal of the water quality monitor 44, and the waste liquid data analysis module is electrically connected to the neutralization supplement unit.

[0063] When the wastewater after reaction and separation enters the return liquid collection frame 7, the fine dust filter plate 42 first removes the suspended matter and sediment in the absorption liquid to further ensure the purity of the wastewater. The selective adsorption capacity of the ion exchange resin plate 43 is used to exchange the sulfate ions in the wastewater with other ions on the resin to achieve the purpose of removing sulfate. The multiple groups of replenishing liquid tanks 45 respectively store the acidic solution, alkaline solution and absorbent that can react with the absorbent. The feed valve pipe 46 accurately controls the dosage, and adds an appropriate amount of acidic or alkaline substances according to the pH and composition of the absorption liquid for neutralization and adjustment, so that the absorption liquid is kept within a suitable pH range for reuse in desulfurization and dust removal. The water quality monitor 44 monitors the water quality of the absorption liquid, including indicators such as pH value, sulfate concentration, and suspended matter content, to further ensure that the quality of the absorption liquid meets the requirements of recycling and reuse. Since the absorption liquid consumes part of the alkaline substances during the reaction process, new absorbent is added to maintain the desulfurization capacity of the absorption liquid;

[0064] The spray controller 15 drives and controls the working status of the spray rotating motor 11, the electric slider 28, the circulation pump 47, the inclined guide rail 31, the distance adjustment handle 32, the precipitation recovery component, the return liquid collection frame 7 and the water quality monitor 44 through the spray desulfurization module, the waste liquid recovery module and the waste liquid data analysis module. The water quality monitor 44 transmits the waste liquid pH value, sulfate concentration, suspended matter content and other indicators to the spray controller 15, and the neutralization and replenishment unit calculates the corresponding acid solution, alkaline solution or absorbent capacity that needs to be added according to the actual waste liquid pH value and waste liquid solution concentration, and accurately controls the dosage through the feed valve pipe 46.

[0065] The method for using the desulfurization and dust removal equipment includes the following steps:

[0066] Step S1, after the flue gas enters the spray barrel 1, the water mist nozzle 13 evenly sprays the absorption liquid into the barrel to form a water film or water mist. During the process of the flue gas rotating and rising in the barrel, it will fully contact with the spray liquid and undergo a chemical reaction. The sulfur oxides in the flue gas will be absorbed by the absorption liquid and converted into sulfates, and the purified gas will be discharged into the atmosphere through the exhaust pipe 9;

[0067] Step S2, the chemical reagent in the precipitation reagent storage tank 21 is added into the circulating liquid guide frame 6 to react with the sulfate in the waste liquid to generate an insoluble precipitate, the turning motor 25 is operated to turn the circulating liquid guide frame 6 backward, and the waste liquid is filtered through the separation filter 40 and poured into the return liquid collection frame 7;

[0068] Step S3, adding an appropriate amount of acidic or alkaline substances according to the pH value and composition of the absorption liquid for neutralization and adjustment, and regularly replenishing new absorbent according to the concentration of the absorption liquid.

[0069] In step S1, the following steps are also included:

[0070] Step S11, dust particles in the flue gas are also captured by the water film and fall with the water flow, the inclined guide rail 31 and the distance adjustment lever 32 cooperate to drive the liquid pressing plate 33 to squeeze the liquid in the sulfate, and the squeezed liquid falls into the circulating liquid guide frame 6;

[0071] In step S2, the following steps are also included:

[0072] Step S21 , the precipitate filtered out from the waste liquid is discharged from the slag discharge barrel 16 through the precipitate discharge valve pipe 41 .

[0073] Working principle: When using this device, first, after the flue gas enters the spray barrel 1, the water mist nozzle 13 evenly sprays the absorption liquid into the barrel to form a water film or water mist. During the process of the flue gas rotating and rising in the barrel, it will fully contact with the spray liquid and undergo a chemical reaction. The sulfur oxides in the flue gas will be absorbed by the absorption liquid and converted into sulfates. The purified gas will be discharged into the atmosphere through the exhaust pipe 9. The dust particles in the flue gas will also be captured by the water film and fall with the water flow. The inclined guide rail 31 and the distance adjustment lever 32 cooperate to drive the liquid pressure plate 33 to squeeze the liquid in the sulfate. The squeezed liquid falls into the circulating liquid guiding frame 6, and the chemical reagent in the precipitation reagent storage tank 21 is added into the circulating liquid guiding frame 6 to react with the sulfate in the waste liquid to generate an insoluble precipitate. The flip motor 25 works to flip the circulating liquid guiding frame 6 backward, and the waste liquid is filtered through the separation filter 40 and poured into the return liquid collection frame 7. The precipitate filtered out of the waste liquid is discharged from the slag discharge barrel 16 through the precipitate discharge valve pipe 41. Acidic or alkaline substances are added in appropriate amounts according to the pH and composition of the absorption liquid for neutralization and adjustment, and new absorbent is regularly added according to the concentration of the absorption liquid.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A spray desulfurization and dust removal device with a wastewater recovery structure, comprising a spray barrel (1), a wastewater recovery seat (2) and a driving tipping seat (4), characterized in that: A wastewater recovery seat (2) is installed at the bottom end of the spray barrel (1), and a recovery outlet (38) is provided through the top of the wastewater recovery seat (2); A sedimentation recovery assembly is arranged on the inner side of the wastewater recovery seat (2), and the sedimentation recovery assembly comprises a driving tipping seat (4), a feeding groove (23), a threaded hinge seat (26), a circulating liquid guide frame (6), a sedimentation reagent storage tank (21) and a supply valve (22), wherein the driving tipping seat (4) is mounted on the bottom wall of the wastewater recovery seat (2), the feeding groove (23) is opened on the top of the driving tipping seat (4), the threaded hinge seat (26) is movably mounted on the inner side of the feeding groove (23), the circulating liquid guide frame (6) and the driving tipping seat (4) are connected via a rotating shaft, the sedimentation reagent storage tank (21) is mounted on the outer side of the wastewater recovery seat (2), the supply valve (22) is mounted on the outer end of the sedimentation reagent storage tank (21), and the supply valve (22) is located above the circulating liquid guide frame (6); A threaded rod (24) is installed on the inner side of the feed groove (23), a tilting motor (25) is installed on the front end of the driving tilting seat (4), and the output end of the tilting motor (25) is connected to the input end of the threaded rod (24), a threaded hinge seat (26) is sleeved on the outer side of the threaded rod (24), and the outer end of the threaded hinge seat (26) slides on the inner wall of the feed groove (23), a rotating support column (27) is installed on the inner side of the threaded hinge seat (26), and the bottom end of the rotating support column (27) is hinged to the bottom end of the circulating liquid guide frame (6); A mixing reaction motor (35) is installed on the outer side of the circulating liquid guide frame (6), a rotating space groove (17) is provided on the inner wall of one side of the wastewater recovery seat (2), a mixing liquid rack (36) is installed on the output end of the mixing reaction motor (35), a cleaning nozzle (37) is symmetrically installed on the inner wall of the circulating liquid guide frame (6), a long groove (39) is provided through the back of the circulating liquid guide frame (6), a separation filter (40) is installed on the inner side of the long groove (39), a sediment discharge valve pipe (41) is installed on the outer side of the circulating liquid guide frame (6), and a slag discharge cylinder (16) is installed on the outer side of the wastewater recovery seat (2), and the slag discharge cylinder (16) cooperates with the sediment discharge valve pipe (41); A guide inclined plate (5) is symmetrically mounted on the inner wall at the top end of the wastewater recovery seat (2), an inclined guide rail (31) is mounted at the bottom of the guide inclined plate (5), an adjustable distance handle (32) is mounted at the output end of the adjustable distance handle (32), a liquid pressing plate (33) is mounted at the telescopic end of the liquid pressing plate (33), a protective pressure pad (34) is mounted at the bottom of the liquid pressing plate (33), an electric rotating seat (18) is mounted on the inner wall of the wastewater recovery seat (2), a liquid pressing filter plate (19) is mounted at the output end of the electric rotating seat (18), and a filtrate hole (20) is opened through the top of the liquid pressing filter plate (19).

2. The spray desulfurization and dust removal equipment with a wastewater recovery structure according to claim 1 is characterized in that: The top of the spray cylinder (1) is provided with a top cone cylinder (8), the top of the top cone cylinder (8) is provided with an exhaust pipe (9), the inner wall of the spray cylinder (1) is provided with an odor adsorption layer (10), the outer side of the spray cylinder (1) is symmetrically provided with a spray rotating motor (11), the output end of the spray rotating motor (11) is provided with a spray disc (12), the output end of the spray disc (12) is provided with a water mist nozzle (13), and the outer bottom of the spray cylinder (1) is provided with a smoke inlet (14).

3. The spray desulfurization and dust removal equipment with a wastewater recovery structure according to claim 1 is characterized in that: A scraping and recovery slide rail (3) is installed on the inner wall of the spray barrel (1), an electric slider (28) is installed on the outer side of the scraping and recovery slide rail (3), a stable socket (29) is installed on the output end of the electric slider (28), and a product scraping ring (30) is installed on the opposite side of the stable socket (29).

4. The spray desulfurization and dust removal equipment with a wastewater recovery structure according to claim 1 is characterized in that: A return liquid collection frame (7) is installed at the rear end of the wastewater recovery seat (2); a fine dust filter plate (42) is installed on the inner wall of the return liquid collection frame (7); an ion exchange resin plate (43) is installed on the inner wall of the return liquid collection frame (7); a water quality monitor (44) is installed on the inner wall of the return liquid collection frame (7); a replenishing liquid tank (45) is installed on the outer side of the return liquid collection frame (7); a replenishing valve pipe (46) is installed at the output end of the replenishing liquid tank (45); a circulation pump (47) is installed on the outer side of the return liquid collection frame (7); and the output end of the circulation pump (47) is connected to the input end of the spray plate (12) through a pipeline.

5. The spray desulfurization and dust removal equipment with a wastewater recovery structure according to claim 1 is characterized in that: A spray controller (15) is installed on the front of the wastewater recovery seat (2). The spray controller (15) consists of a spray desulfurization module, a waste liquid recovery module and a waste liquid data analysis module. The spray desulfurization module is electrically connected to the spray rotating motor (11), the electric slider (28) and the circulating pump (47). The waste liquid recovery module is electrically connected to the inclined guide rail (31), the distance adjustment lever (32), the sedimentation recovery component and the return liquid collection frame (7). The waste liquid data analysis module receives the output signal of the water quality monitor (44). The waste liquid data analysis module is electrically connected to the neutralization replenishment unit.

6. A method for using a spray desulfurization and dust removal device with a wastewater recovery structure, using the spray desulfurization and dust removal device with a wastewater recovery structure according to any one of claims 1 to 5, characterized in that: The method for using the desulfurization and dust removal equipment includes the following steps: Step S1, after the flue gas enters the spray barrel (1), the water mist nozzle (13) evenly sprays the absorption liquid into the barrel to form a water film or water mist. During the process of the flue gas rotating and rising in the barrel, it will fully contact with the spray liquid and undergo a chemical reaction. The sulfur oxides in the flue gas will be absorbed by the absorption liquid and converted into sulfates. The purified gas will be discharged into the atmosphere through the exhaust pipe (9); Step S2, the chemical reagent in the precipitation reagent storage tank (21) is added to the circulating liquid guide frame (6) to react with the sulfate in the waste liquid to generate an insoluble precipitate, the turning motor (25) is operated to turn the circulating liquid guide frame (6) backward, and the waste liquid is filtered through the separation filter (40) and poured into the return liquid collection frame (7); Step S3, adding an appropriate amount of acidic or alkaline substances according to the pH value and composition of the absorption liquid for neutralization and adjustment, and regularly replenishing new absorbent according to the concentration of the absorption liquid.

7. The method for using the spray desulfurization and dust removal equipment with a wastewater recovery structure according to claim 6 is characterized in that: In the step S1, the following steps are also included: Step S11, dust particles in the flue gas are also captured by the water film and fall with the water flow, the inclined guide rail (31) and the distance adjustment lever (32) cooperate to drive the liquid pressing plate (33) to squeeze the liquid in the sulfate, and the squeezed liquid falls into the circulating liquid guide frame (6); In the step S2, the following steps are also included: Step S21, the sediment filtered out from the waste liquid is discharged from the slag discharge barrel (16) through the sediment discharge valve pipe (41).

Images