Purification elements and pneumatic emulsification treatment devices

Abstract

The present invention discloses a purification element and a pneumatic emulsification treatment device, wherein the purification element comprises a cyclone and a cyclone (7) arranged on the cyclone, wherein the cyclone comprises an inner cylinder (2) and an outer cylinder (3), wherein the cyclone (7) is arranged inside the inner cylinder (2); a slurry discharge space is formed between the inner cylinder (2) and the outer cylinder (3), wherein the inner cylinder (2) is provided with a slurry supply port (5), and wherein the inner cylinder (2) is provided with a slurry discharge portion (6) on a side wall between the slurry supply port (5) and the cyclone (7); wherein the slurry discharge space is provided with a slurry collection portion located below the slurry discharge portion (6), wherein the slurry collection portion is provided with a flow guide pipe (10). The purification element can significantly reduce the total resistance of the desulfurization system, thereby achieving the purpose of reducing the operating parameters of the fan and reducing energy consumption, and at the same time can improve the desulfurization capacity of a single tower, reduce the equipment scale, save investment, and save land.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas purification equipment, in particular to a purification element for purifying flue gas from industrial furnaces, boilers and other equipment using pneumatic emulsification technology. The present invention also relates to a pneumatic emulsification treatment device provided with the purification element. Background Art

[0002] Existing flue gas purification technologies are divided into dry, semi-dry and wet methods. Among them, there are more than ten types of dry flue gas purification technologies and dry flue gas purification devices. The electrostatic precipitator and bag filter are the main representatives on the market. The semi-dry method is represented by spray drying and flue gas circulating fluidized bed. The wet method is the most widely used desulfurization technology, accounting for about 85% of the world's total desulfurization installed capacity.

[0003] There are more than 200 types of wet flue gas desulfurization, most of which are inseparable from nozzles, such as empty tower spray, Venturi, swirl plate tower, bubbling tower, turbulent spherical tower, porous plate tower, water film tower, etc., all of which use spraying liquid. The pneumatic emulsification desulfurization tower developed based on the principles of aerodynamics is the only wet flue gas purification device on the market that does not require nozzles for liquid distribution.

[0004] In the past 20 years, more than 1,000 pneumatic emulsification desulfurization towers have been put into industrial operation. Due to their high desulfurization efficiency, low operating costs, and simple and compact absorption tower structure, they are widely used in the non-ferrous metal smelting industry. The highest desulfurization efficiency reaches 99.99%, the operating power consumption is only 20% of other methods, and the performance is very stable.

[0005] In 2008, the dual-cyclone pneumatic emulsification desulfurization tower was successfully developed. Since 2010, it has been gradually applied to industries other than non-ferrous smelting. In 2016, the pneumatic emulsification desulfurization tower that can adapt to flue gas volume changes was put into commercial use to meet the situation of unstable and flue gas volume fluctuations in steel metallurgy. Up to now, among the hundreds of thousands of boilers and tens of thousands of pellet sintering production equipment in China, more than 400 furnaces have been equipped with pneumatic emulsification desulfurization towers.

[0006] The existing pneumatic emulsification desulfurization tower treats high-sulfur flue gas in the form of a single tower with double cyclones and multi-stage absorption towers in series to meet the requirements of flue gas purification. The multi-cyclone pneumatic emulsification desulfurization tower has high desulfurization efficiency. Compared with wet methods such as spraying, semi-dry methods such as circulating fluidized beds, and dry methods such as activated carbon, the overall system equipment scale is small and the operating cost is low, which is very competitive in the market. However, in use, there are the following situations:

[0007] First, the multi-cyclone pneumatic emulsification desulfurization tower has large resistance and is designed to handle 70000mg / m 3 In the engineering practice of sulfur dioxide flue gas, the outlet sulfur dioxide reaches 100mg / m 3When the following requirements are met (desulfurization rate 99.86%), the actual double cyclone tower series resistance reaches 14000pa, which is much higher than the theoretically calculated resistance of 8000pa. The higher the overall resistance, the greater the work that the flue gas needs to do to overcome the tower resistance, and the higher the performance requirements of the fan that needs to be equipped. The rated power and actual operating power of the matching motor under the same flue gas conditions will be greater, and the energy consumption of the entire production line will be higher. Although the efficiency of pneumatic emulsification technology has been verified, it produces a large energy loss in actual production. When the fan capacity is insufficient, it may even affect production, making actual production operation difficult.

[0008] Secondly, the resistance of the desulfurization tower is uncontrollable. Pneumatic emulsification technology is widely used in the field of kiln exhaust gas treatment in the iron and steel metallurgy, non-ferrous smelting and other industries. In the kilns in the field of non-ferrous smelting and renewable resources, the kiln ingredients contain high levels of harmful substances such as sulfur, and the kiln load varies greatly. In the recycled lead industry, for example, in the oxygen-enriched side-blowing furnace in a company's factory area, the highest kiln sulfur dioxide emission reaches 70,000 mg / m 3 The average sulfur dioxide is 42000mg / m 3 The feeding period is 6 hours, from 7000mg / m 3 Sulfur dioxide concentration reaches 70000mg / m 3 It only takes 15 minutes. During this process, the amount of fresh circulating liquid instantly increases several times, the thickness of the emulsion layer increases accordingly, and the resistance increases accordingly. The maximum tower resistance reaches 13000pa.

[0009] Furthermore, the cyclone of the purification element is installed / welded / connected to a tubular container with an empty interior after production. Therefore, when the project requires a large-caliber filter element group, it is not convenient to transport it to the site for welding and installation after production in the factory (vehicle transportation is too wide and too high), and all materials can only be transported to the site for on-site processing. Although it has a time advantage compared to other environmental protection facilities such as wet spraying (construction period of 5-6 months), circulating fluidized bed semi-dry desulfurization and denitrification (average construction period of 5 months), and activated carbon desulfurization and denitrification (construction period of no less than 8 months), it is difficult to control the quality of on-site production, and the production efficiency is low under non-standardized production conditions. It cannot effectively shorten the production and installation time of the final product (pneumatic emulsification desulfurization tower). Moreover, the welding quality of the finished product is worse than that of the factory production, and it is even more impossible to use other materials as the main material of the desulfurization tower, and it is impossible to expand the adaptability and economy of pneumatic emulsification technology, which still does not meet the current market needs. Summary of the invention

[0010] The object of the present invention is to provide a purification element which can effectively reduce the running resistance of a pneumatic emulsification treatment device.

[0011] The present invention also provides a pneumatic emulsification treatment device provided with the purification element.

[0012] To achieve the above-mentioned purpose, the present invention provides a purification element, comprising a cyclone cylinder and a cyclone arranged in the cyclone cylinder, the cyclone cylinder comprising an inner cylinder and an outer cylinder, the cyclone being arranged inside the inner cylinder; a slurry discharge space is formed between the inner cylinder and the outer cylinder, the inner cylinder is provided with a slurry feeding port, and the inner cylinder is provided with a slurry discharge portion on a side wall located between the slurry feeding port and the cyclone for discharging the emulsion layer slurry from the inner cylinder to the slurry discharge space; the slurry discharge space is provided with a slurry collecting portion located below the slurry discharge portion for holding the emulsion layer slurry, and the slurry collecting portion is provided with a guide pipe for discharging the emulsion layer slurry.

[0013] Preferably, the side wall of the inner cylinder is provided with an extended pulp discharge hole corresponding to the guide vane of the cyclone.

[0014] Preferably, the slurry collecting part comprises an annular guide groove arranged between the inner tube and the outer tube, and a plurality of guide pipes are arranged at the lower part or the outer edge of the guide groove, and the guide pipes are connected to the slurry discharge pipe.

[0015] Preferably, the inner cylinder is provided with a plurality of slurry feeding ports distributed in the circumferential direction, and the slurry feeding ports feed slurry at a set angle in accordance with the inner wall of the inner cylinder, and the slurry feeding direction is the same as the direction of the rotating rising airflow of the cyclone.

[0016] Preferably, the pulp discharge portion includes a hole-like pulp discharge structure, a mesh-like pulp discharge structure or a screen-like pulp discharge structure provided on the side wall of the inner cylinder.

[0017] Preferably, the inner cylinder is provided with a slurry blocking component which cooperates with the slurry discharge portion to adjust the slurry discharge amount of the slurry discharge portion.

[0018] Preferably, the slurry blocking component comprises a movable slurry blocking plate which is arranged on the outside or inside of the inner tube and can move up and down, and the movable slurry blocking plate forms different degrees of shielding on the slurry discharge part by moving up and down to adjust the slurry discharge amount of the slurry discharge part.

[0019] Preferably, the upper end and the lower end of the inner cylinder and / or the outer cylinder are provided with quick-release connection parts.

[0020] Preferably, the quick-release connection portion includes at least one of a flange connection structure, a threaded connection structure, and a movable clamp connection structure, or a combination thereof.

[0021] To achieve the other purpose mentioned above, the present invention provides a pneumatic emulsification treatment device, including an air equalizing chamber provided with an air inlet pipe and a demister chamber provided with a smoke exhaust pipe, a purification element is provided between the air equalizing chamber and the demister chamber, and the purification element is the purification element described in any one of the above items.

[0022] The purification element provided by the present invention designs the cyclone tube to have a double-layer structure of an inner tube and an outer tube, and a slurry discharge part is provided on the side wall of the inner tube, and a slurry collection part is provided in the slurry discharge space formed between the inner tube and the outer tube. In this way, during operation, after the emulsion layer is formed inside the inner tube, the slurry of the earliest formed emulsion layer can be brought out of the inner tube by the pneumatic force from the inside to the outside, and after being collected by the slurry collection part in the slurry discharge space, it is discharged outward through the guide pipe, so that the slurry does not flow from the inner tube to the cyclone of the next layer of purification element by the gravity of the slurry itself, so that the resistance generated in the purification element is only the emulsion layer itself formed by the slurry supply of the current layer of purification element, which significantly reduces the increase of additional resistance brought by each layer of emulsion layer due to the increase of the actual liquid-gas ratio, reduces the total resistance of the desulfurization system, and achieves the purpose of reducing the operating parameters of the fan and saving energy and reducing consumption; at the same time, the multi-tower series connection can be changed to a single tower form, and each purification tower can be provided with a multi-stage purification element in series, which improves the desulfurization capacity of the single tower, reduces the equipment scale, saves investment, and saves land.

[0023] Moreover, since the slurry at each level of the single-tower multi-stage purification element can be controlled separately, the upper layer slurry does not fall to the lower layer, and the absorption effect of the emulsion layer in this layer can be optimized.

[0024] In addition, since each purification element can independently input and output slurry, the slurry within different parameter ranges can be discharged to different reaction containers for subsequent process adjustments, which can effectively control the reaction and generation quality of desulfurization by-products.

[0025] The pneumatic emulsification treatment device provided by the present invention is provided with the purification element. Since the purification element has the above-mentioned technical effects, the pneumatic emulsification treatment device provided with the purification element should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an isometric view of a purification element disclosed in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A side view of the purification element shown;

[0028] Figure 3 for Figure 1 Axonometric view of the inner cylinder, guide groove and guide pipe shown in FIG.

[0029] Figure 4 for Figure 3 A side view of the inner cylinder, guide groove and guide pipe shown;

[0030] Figure 5 A side view of an inner cylinder, a guide groove, and a guide pipe of another purification element disclosed in an embodiment of the present invention;

[0031] Figure 6 for Figure 5 A side view of the outer barrel of the purification element is shown.

[0032] In the figure:

[0033] 1. Purification element 2. Inner tube 3. Outer tube 4. First quick-fit connection 5. Slurry feeding port 6. Slurry discharge part 7. Cyclone 8. Outer slurry discharge hole 9. Diversion groove 10. Diversion pipe 11. Second quick-fit connection 12. Third quick-fit connection 13. Fourth quick-fit connection 14. Observation mirror 15. Inspection hole 16. Slurry inlet 17. Instrument 18. Slurry feeding pipeline 19. Movable baffle 20. Slurry control mechanism DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0036] The pneumatic emulsification principle of a typical purification element during operation is as follows: In the circular tubular device of the purification element, the accelerated flue gas to be treated enters the container from the lower end of the container at a certain angle, forming a rotating and rising turbulent airflow, which collides with the unstable solution flowing down from the upper end of the container. The flue gas high-speed rotary shears the flowing solution, the solution is chopped, the gas and liquid are fully mixed, and a dynamically stable emulsion layer is formed under the appropriate parameter matching. During the emulsification process, the emulsion layer gradually thickens, and the rising pneumatic support force reaches a balance with the gravity of the emulsion. As the flue gas flows, part of the emulsion is taken away, and the previously formed emulsion will be replaced by the newly formed emulsion. In the emulsion layer, the harmful substances carried by the flue gas come into contact with the fine liquid particles in the emulsion and are absorbed.

[0037] The pneumatic emulsification purification device is usually provided with a plurality of purification elements, each of which is provided with a cyclone, and the solution enters the purification element from the top of each cyclone. The inventor has found through research that in this case, the cyclone on the top layer accelerates the flue gas to form an emulsion layer with the solution supplied on the top layer according to the pneumatic emulsification principle, the pneumatic force reaches a balance, the solution is continuously supplied, the emulsion layer thickens, the previously formed emulsion is replaced by the newly formed emulsion, and the old emulsion falls to the top of the lower cyclone; fresh solution is also supplied above the lower cyclone at the same time, the upper emulsion is mixed with the fresh solution, and the flue gas is accelerated by the lower cyclone to form an emulsion layer with the mixed solution. The amount of the emulsion layer is the sum of the fresh solution and the emulsion falling from the upper layer. The pneumatic force is proportional to the square of the flue gas flow rate. The faster the flow rate of the flue gas accelerated by the rotation of the lower layer is, the greater upward pneumatic lifting force can be provided to achieve a balance with the gravity of the solution. Moreover, in the process of the slurry continuously falling, the resistance inside the filter element will be correspondingly increased. Therefore, the resistance of the thicker emulsion layer in the lower layer is greater than the theoretical value of the emulsion layer formed by the single-layer cyclone, resulting in a larger actual tower resistance of the multi-cyclone pneumatic emulsion desulfurization tower. When the flue gas volume and the pollutant content in the flue gas increase, the corresponding increase in the solution supply in the tower will inevitably increase the resistance in the tower exponentially, and the performance of the pneumatic emulsion desulfurization tower cannot be further improved.

[0038] In addition, the inventors have also found through research that the absorption efficiency of the slurry in the upper layer after absorbing pollutants in the flue gas is reduced or it has lost its ability to absorb again. After mixing with the slurry supplied from the lower layer, the absorption efficiency of the emulsion layer is further reduced, making it impossible for the working efficiency of the lower emulsion layer to reach the optimal state. The pollutants in the flue gas can only be removed by increasing the slurry supply. Increasing the slurry supply will increase the overall resistance in the tower. During use, the system resistance will be further increased as practice progresses, resulting in the kiln being unable to produce normally.

[0039] Therefore, a single-stage pneumatic emulsification desulfurization (filtration) tower rarely has more than two layers of purification elements, otherwise the system resistance will be several times the theoretical value. When treating flue gas with high pollutant content, multi-stage towers are generally connected in series. Under the same flue gas volume, the equipment manufacturing cost is much higher than that of a system with low pollutant content. Moreover, the pipe bends between the multi-stage series towers and the demisting section of the desulfurization tower will increase the tower resistance.

[0040] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 1 It is an isometric view of a purification element disclosed in an embodiment of the present invention; Figure 2 for Figure 1 A side view of the purification element shown; Figure 3 for Figure 1 Axonometric view of the inner cylinder, guide groove and guide pipe shown in FIG. Figure 4 for Figure 3 A side view of the inner cylinder, guide groove and guide pipe is shown.

[0041] In one embodiment, the purification element 1 (also called a filter element) provided by the present invention includes a cyclone tube and a flue gas acceleration device arranged in the cyclone tube, the cyclone tube includes an inner tube 2 and an outer tube 3, the inner tube 2 and the outer tube 3 are both circular tubular containers, wherein the flue gas acceleration device is installed in the inner tube 2, and the flue gas acceleration device shown in the figure is a cyclone 7.

[0042] The structures of the inner tube 2 are, from top to bottom, a first quick-fit connection section provided with a first quick-fit connection part 4, a solution slurry feeding section provided with a slurry feeding port 5, a slurry discharge section provided with a slurry discharge part 6, a flue gas acceleration section provided with a cyclone 7, a guide groove 9, a guide pipe 10 and a second quick-fit connection section provided with a second quick-fit connection part 11.

[0043] The first quick-release connection part 4 at the top can be a flange, a thread or a movable clamp. The corresponding connection method is selected according to the specifications. If the pipe diameter is large, a flange with bolts can be used for connection. If the pipe diameter is not large, threaded splicing or movable clamp docking can be used. The lower part of the first quick-release connection part 4 is a solution slurry feeding section. The slurry feeding section is provided with one or more slurry feeding ports 5. If a single slurry feeding port 5 is provided, it is easy to cause blockage. By providing multiple slurry feeding ports 5, uniform slurry feeding is ensured. At the same time, the slurry feeding port 5 can be set to feed slurry at a certain angle to the inner wall of the inner tube 2, and the angle is the same as the direction of the rotating upward airflow.

[0044] The lower part of the slurry feeding section is the slurry discharge section. The slurry discharge part 6 of the slurry discharge section can be set to a hole-shaped, mesh-shaped, or sieve-shaped structure according to different media. If the solid content of the medium is high, a hole-shaped structure with a relatively large pore size can be selected. The slurry discharge amount of the slurry discharge section is not less than the slurry feeding amount; the lower part of the slurry discharge section is the flue gas acceleration section. A cyclone 7 is arranged inside the flue gas acceleration section. The cyclone 7 can be an ordinary cyclone or a curved cyclone. The blades of the curved cyclone can be in the shape of a bucket, a spoon, a hook, a groove, etc., which can block the remaining slurry that has not been discharged from the slurry discharge section. The number and distribution of special-shaped blades are selected according to actual flue gas conditions.

[0045] A guide groove 9 is arranged between the outer wall of the inner tube 2 and the inner wall of the outer tube 3. The guide groove 9 is an annular structure, which is used to receive the slurry flowing out from the slurry discharge part 6. The final flow direction of the slurry can be independently controlled. If there are multiple stages of purification elements in series, each layer of slurry will not affect each other, and the process parameters of each layer of slurry can be independently controlled. The design of the guide groove 9 is based on the principle that the slurry can flow quickly and without liquid accumulation. A guide pipe 10 is arranged at the bottom or outer edge of the guide groove 9. Several guide pipes 10 can be arranged at the guide groove 9 to prevent single-tube blockage and ensure smooth slurry discharge. The slurry does not enter different reaction containers through the inside of the purification element 1. The second quick-release connection part 11 at the bottom of the purification element 1, its structure and selection can refer to the first quick-release connection part 4 to meet the needs of quick installation. It should be noted here that the second quick-release connection portion 11 can be the same as the first quick-release connection portion 4 or different from the first quick-release connection portion 4. For example, the first quick-release connection portion 4 and the second quick-release connection portion 11 are both threads, or the first quick-release connection portion 4 is a thread and the second quick-release connection portion 11 is a flange, and so on.

[0046] The outer tube 3 is also a circular tubular structure, whose height is consistent with that of the inner tube 2, and whose radius is larger than the diameter of the inner tube 2 plus the width of the guide groove 9. Similar to the inner tube 2, a third quick-release connection part 12 is provided at its uppermost end, and a fourth quick-release connection part 13 is provided at its lowermost end. An observation mirror 14 is provided on the external side wall, and opening the observation mirror 14 also has a maintenance function. The slurry inlet 16 matches the position of the solution slurry feeding section of the inner tube 2, and is used for supplying slurry to the inner tube 2 through an external pipeline. As shown in the figure, the slurry feeding port 5 of the inner tube 2 is provided with a slurry feeding pipeline 18, and the slurry feeding pipeline 18 passes through the slurry inlet 16 on the side wall of the outer tube 3 and is connected to the interior of the inner tube 2.

[0047] As for the slurry discharge space formed between the outer tube 3 and the inner tube 2, from top to bottom, they are respectively a slurry feeding pipe 18 (partial) passing through the slurry discharge space, a guide groove 9 and a guide pipe 10. If it is for the purpose of saving production and material costs, the guide groove 9 can be connected to the outer wall of the inner tube 2 and the inner wall of the outer tube 3, and the guide pipe 10 can also be attached to the outer wall of the inner tube 2 and the inner wall of the outer tube 3, or designed as an independent pipe.

[0048] The above-mentioned inner and outer double-tube design is easy for process control and is convenient for forming and maintaining the emulsion layer. The outer wall of the outer tube 3 integrates the control instrument 17 and related mechanical control motion mechanism, which is easy to realize automation, save materials, save installation time, and is also convenient for maintenance.

[0049] Please refer to Figure 5 , Figure 6 , Figure 5 A side view of an inner cylinder, a guide groove, and a guide pipe of another purification element disclosed in an embodiment of the present invention; Figure 6 for Figure 5 A side view of the outer barrel of the purification element is shown.

[0050] As shown in the figure, in another embodiment, the purification element provided is basically the same as the first embodiment described above, and the main difference is that the inner tube 2 is provided with a slurry blocking component that cooperates with the slurry discharge part 6 to adjust the slurry discharge amount of the slurry discharge part.

[0051] Specifically, the slurry blocking component can be a movable baffle 19, which is in the shape of a sleeve and can be movably arranged on the outside or inside of the inner cylinder 2 up and down. It can be moved up and down along the outer wall or inner wall of the inner cylinder 2, and is connected to the inner cylinder 2 or the outer cylinder 3 through an up and down sliding mechanism, and is provided with a driving mechanism that can drive the movable baffle 19 to move up and down relative to the inner cylinder 2 or the outer cylinder 3. When the movable slurry blocking plate 19 moves up and down, it can form different degrees of shielding on the slurry discharge part 6. The blocked part of the slurry discharge part 6 is sealed by the movable slurry blocking plate 19, and no slurry is discharged. The part not blocked by the movable slurry blocking plate 19 remains unobstructed and can continue to discharge slurry, thereby achieving the purpose of adjusting the slurry discharge amount of the slurry discharge part. By controlling the movable baffle 19, the adjustment effects of full opening, partial opening and full closing can be achieved. The structure for driving the movable baffle 19 can be in various ways. For example, the movable baffle 19 is installed on the outer wall of the inner tube 2 through a linear slide rail, and then the movable baffle 19 is driven to move up and down by a gear rack mechanism, or the movable baffle 19 is driven to move up and down by a cylinder or an oil cylinder, etc. Since it can be achieved by adopting general technology, it will not be described in detail in this article.

[0052] The movable baffle 19 is mainly used to adjust the total amount of slurry passing through the purification element 1. When the movable baffle 19 completely closes the slurry discharge part, the inner cylinder 2 and the outer cylinder 3 of the purification element 1 can also be used for online maintenance. At the same time, the emulsion layer can be ensured to be at a normal liquid level. In order to control the movable baffle 19, a slurry control mechanism 20 can be integrated on the outer wall of the outer cylinder 3 to automatically or manually control the movement of the movable slurry baffle. The position of the movable slurry baffle 19 is controlled by the liquid level of the inner emulsion layer, the slurry flow rate, the resistance generated by the emulsion layer in the filter element, and the flue gas pollutant parameters before and after purification.

[0053] In addition, in this embodiment, an extended slurry discharge hole 8 is provided on the side wall of the inner tube 2, and each of the extended slurry discharge holes 8 corresponds to the guide vanes of the cyclone 7. The guide vanes serve to block the remaining slurry that has not been discharged from the slurry discharge section. When the slurry that has not been discharged from the slurry discharge part 6 and collected by the guide vanes accumulates to a certain amount, it can be discharged outward from the extended slurry discharge hole 8 and enter the guide groove 9 below to prevent the slurry from falling to the next layer of purification elements.

[0054] The outer side wall is provided with an observation mirror 14, an inspection hole 15, a slurry inlet 16 and an instrument 17. The observation mirror 14 and the inspection hole 15 can be integrated together or separated according to actual needs. At the same time, opening the observation mirror 14 also has an inspection function. The instrument 17 includes but is not limited to a level meter, a flow meter, a pressure gauge, a pH meter, and an online monitoring device.

[0055] The above embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the height of the outer cylinder 3 is smaller than that of the inner cylinder 2, and both ends of the outer cylinder 3 are connected to the outer wall of the inner cylinder 1 in a closed form, and only the upper and lower ends of the inner cylinder 2 are provided with quick-release connection parts; or, the pulp discharge part 6 adopts the form of a combination of a net, a hole, and a sieve; or, the inner cylinder 2 or the outer cylinder 3 is designed into other shapes, etc. Since there are many possible implementation methods, they will not be explained one by one here.

[0056] The present invention utilizes the aerodynamic force (on the horizontal plane) from the inside to the outside of the turbulent airflow that is accelerated and rotated and ascended in the tubular container. After the emulsion layer is formed, the slurry of the earliest emulsion layer is taken out of the circular tubular container (i.e., the inner cylinder 2) by the aerodynamic force from the inside to the outside, and is discharged to an independent reaction container through the slurry discharge pipe through the outer cylinder 3, or is first transported downward for a distance between the outer cylinder 3 and the inner cylinder 2 and then discharged to an independent reaction container through the outer cylinder 3 of the lowest purification element, so that the slurry does not flow from the circular tubular container to the inner cylinder 2 by the gravity of the slurry itself. On the lower cyclone 7, the increase in additional resistance brought by each layer of emulsion due to the increase in the actual liquid-to-gas ratio can be significantly reduced. When the resistance of a single or single-layer purification element is reduced, the overall resistance of the tower is reduced, and each layer of purification elements can achieve the purpose of independent process reaction control. Each layer of purification elements is independently supplied with slurry and can independently discharge slurry. Such a design can reduce the liquid-to-gas ratio of the system, the selected pump power is smaller, and the overall energy consumption can be reduced more, which further improves the operating efficiency of the multi-layer cyclone pneumatic emulsification desulfurization tower and reduces the equipment scale, investment and operating costs of kiln production.

[0057] In addition, it also has the following beneficial effects:

[0058] 1. When the resistance of the purification element is only the resistance generated by the emulsion layer, a single-tower multi-stage purification element can be connected in series. The single-tower multi-stage design can be achieved. In theory, the pneumatic emulsification technology can treat pollutants in the flue gas, such as sulfur dioxide, with an infinitely high content. Under the condition of ensuring the proper selection of the fan, 100% pollutant removal efficiency can be achieved, which can further expand the application scope of the pneumatic emulsification technology, making it not only suitable for wet dust removal and deep purification, but also suitable for use in production lines in chemical, coal, coking and other industries, reducing the operating cost of ultra-low emissions.

[0059] 2. By monitoring the emulsion layer and flue gas parameters in the filter element, the operating state of the emulsion layer can be more finely controlled. Under the premise of ensuring the removal of pollutants, the electromechanical equipment can be operated with the lowest energy consumption, and the resistance of the filter element can be controlled to the lowest.

[0060] 3. Since each layer of slurry falls separately, it can be designed to flow into reaction vessels with different process parameters, so that the generation of by-products can be stably controlled.

[0061] 4. Since the slurry at each level of the single-tower multi-stage purification element can be controlled separately, the upper slurry does not fall to the lower layer, so the absorption effect of the emulsion layer in this layer can be optimized.

[0062] 5. It can reduce resistance and realize independent control of process conditions of each layer reaction in a single tower, realize the engineering implementation of single-tower high-sulfur removal, and reduce the investment in the desulfurization tower part, changing from multiple towers to a single tower, saving equipment investment.

[0063] 6. The upper and lower ends of the components are connected by flanges, threads, movable clamps, etc., and modular and quick installation can be achieved without on-site welding, shortening the installation and welding cycle that originally took dozens of days or months to a few days, while making it easier to control product quality.

[0064] 7. It can be designed and produced in a standardized manner in the factory to better control its product quality. In addition to the existing widely used fiberglass, plastic, various stainless steel and metal materials, plastic, ceramic, electroplated composite materials, etc. can also be used. These materials are difficult to process but have better material costs and performance, making pneumatic emulsification technology widely applicable to other fields besides environmental protection.

[0065] 8. A single tower can effectively reduce the total construction area and save land.

[0066] In addition to the above-mentioned purification element, the present invention also provides a pneumatic emulsification treatment device, including an air equalization chamber provided with an air inlet pipe and a demisting chamber provided with a smoke exhaust pipe, a purification element is provided between the air equalization chamber and the demisting chamber, wherein the purification element is the purification element described above. Regarding other structures of the pneumatic emulsification treatment device, please refer to the prior art, which will not be repeated in this article.

[0067] The purification element and the pneumatic emulsification treatment device provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A purification element, comprising a cyclone tube and a cyclone (7) arranged on the cyclone tube, characterized in that: The cyclone cylinder comprises an inner cylinder (2) and an outer cylinder (3), the cyclone (7) being arranged inside the inner cylinder (2); a slurry discharge space is formed between the inner cylinder (2) and the outer cylinder (3), the inner cylinder (2) being provided with a slurry supply port (5), and the inner cylinder (2) being provided with a slurry discharge portion (6) on a side wall located between the slurry supply port (5) and the cyclone (7) for discharging emulsion layer slurry from the inner cylinder to the slurry discharge space; the slurry discharge space is provided with a slurry collection portion located below the slurry discharge portion (6) for receiving the emulsion layer slurry, and the slurry collection portion is provided with a slurry discharge portion for discharging A guide pipe (10) for emulsion layer slurry; the side wall of the inner cylinder (2) is provided with an extended slurry discharge hole (8) corresponding to the guide blade of the cyclone (7); the inner cylinder (2) is provided with a slurry blocking component that cooperates with the slurry discharge part (6) to adjust the slurry discharge amount of the slurry discharge part (6); the slurry blocking component includes a movable slurry blocking plate (19) that is arranged on the outside or inside of the inner cylinder (2) and can move up and down, and the movable slurry blocking plate (19) forms different degrees of shielding on the slurry discharge part (6) by moving up and down to adjust the slurry discharge amount of the slurry discharge part (6).

2. The purification element according to claim 1, characterized in that: The slurry collection portion comprises an annular guide groove (9) provided between the inner tube (2) and the outer tube (3), a plurality of guide pipes (10) are provided at the lower part or outer edge of the guide groove (9), and the guide pipes (10) are connected to a slurry discharge pipe.

3. The purification element according to claim 1, characterized in that: The inner cylinder (2) is provided with a plurality of slurry feeding ports (5) distributed in the circumferential direction, each of the slurry feeding ports (5) feeds slurry at a set angle in accordance with the inner wall of the inner cylinder (2), and the slurry feeding direction is the same as the direction of the rotating ascending airflow of the cyclone (7).

4. The purification element according to claim 1, characterized in that: The pulp discharge portion (6) comprises a hole-shaped pulp discharge structure, a mesh-shaped pulp discharge structure or a screen-shaped pulp discharge structure provided on the side wall of the inner cylinder (2).

5. The purification element according to claim 1, characterized in that: The upper end and the lower end of the inner cylinder (2) and / or the outer cylinder (3) are provided with quick-install connection parts.

6. The purification element according to claim 5, characterized in that: The quick-connection portion includes at least one of a flange connection structure, a threaded connection structure, and a movable clamp connection structure, or a combination thereof.

7. A pneumatic emulsification treatment device, comprising an air-homogenizing chamber provided with an air inlet pipe and a demisting chamber provided with a smoke exhaust pipe, wherein a purification element (1) is provided between the air-homogenizing chamber and the demisting chamber, characterized in that: The purification element (1) is the purification element according to any one of claims 1 to 6.

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