Wet desulphurization dust remover

Abstract

The invention discloses a wet desulphurization dust remover, and relates to the technical field of wet dust removal. The spherical filler layer is arranged below the spraying pipeline, the probability that solid impurities in the to-be-treated flue gas are attached to the spraying head is blocked through the spherical filler layer, meanwhile, alkaline limestone slurry sprayed out of the spraying head is further sputtered at the spherical filler layer, sufficient contact with sulfur-containing gas in the to-be-treated flue gas is facilitated, and the sulfur-containing gas in the to-be-treated flue gas is fully removed. After chemical reaction, crystals are formed, and sulfur-containing gas in the to-be-treated flue gas is treated; kinetic energy of flue gas is recovered by a kinetic energy recovery impeller to drive a rotating shaft to rotate, and an impact block moves along the top wall of a supporting seat, so that the impact block reciprocates in the vertical direction, and then impact force in the vertical direction is applied to a spherical filler layer, so that solid impurities attached to the spherical filler layer move towards the bottom wall of an inner cavity of a spraying tank, and the solid impurities are separated from the spherical filler layer. The probability that solid crystals are attached to the spray header is reduced, and the desulfurization and dust removal treatment efficiency of the to-be-treated flue gas is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of desulfurization and dust removal, and in particular to a wet desulfurization and dust removal device. Background Art

[0002] Industrial boiler flue gas desulfurization generally adopts post-combustion desulfurization. The post-combustion desulfurization methods include dry method, dry-wet method and wet method. Among these three desulfurization methods, the most commonly used is wet desulfurization. The basic process of wet desulfurization is to wash the flue gas with a desulfurizer solution in the desulfurization reaction tower to make the two react chemically to remove sulfides in the flue gas, thereby achieving the purpose of purifying the flue gas.

[0003] In the wet desulfurization and dust removal method used in the prior art, the flue gas to be desulfurized and dusted is sent to the desulfurization tower, and is countercurrently contacted with the alkaline limestone slurry droplets sprayed from top to bottom in the desulfurization tower, so that the acidic oxide SO2 and other pollutants such as HCL and HF are absorbed, and then the flue gas is dusted by electrostatic dust removal, and finally the flue gas is fully purified; and the slurry after absorbing SO2 reacts to generate CaSO3, which is forced to oxidize and crystallize in situ to generate CaSO4·2H2O, and the desulfurization byproduct gypsum is obtained after dehydration, and finally the comprehensive treatment of sulfur-containing flue gas is achieved.

[0004] The inventors believe that in the desulfurization tower disclosed in the prior art, the flue gas to be desulfurized and dust-removed forms crystals after entering the desulfurization tower and coming into contact with the alkaline limestone slurry. The solid impurities formed by the crystals will adhere to the spray port of the alkaline limestone slurry, causing the spray head to gradually become blocked, thereby reducing the efficiency of desulfurization and dust removal. Summary of the invention

[0005] The embodiment of the present application provides a wet desulfurization and dust removal device, which solves the defect in the prior art that the flue gas to be desulfurized and dust removed forms crystals after entering the desulfurization tower and contacting with the alkaline limestone slurry, causing the spray head to be blocked, thereby achieving the purpose of ensuring the treatment efficiency of the desulfurization and dust removal of the flue gas to be desulfurized and dust removed. In the wet desulfurization and dust removal device provided by the present application, a spherical packing layer is arranged below the spray pipe, and the spherical packing layer is used to block the probability of solid impurities in the flue gas to be treated from adhering to the spray head. At the same time, the alkaline limestone slurry sprayed from the spray head is further sputtered at the spherical packing layer, so as to fully contact with the sulfur-containing gas in the flue gas to be treated, and form crystals after chemical reaction, so as to treat the sulfur-containing gas in the flue gas to be treated; further, the kinetic energy recovery impeller is used to recover the kinetic energy of the flue gas during movement, thereby driving the rotation of the rotating shaft, and the impact block is used to move along the top wall of the support seat, so as to realize the reciprocating motion of the impact block in the vertical direction, thereby realizing the application of vertical impact force to the spherical packing layer, so that the solid impurities attached to the spherical packing layer move toward the bottom wall of the inner cavity of the spray tank, thereby reducing the probability of solid crystals adhering to the spray head, and ensuring the treatment efficiency of desulfurization and dust removal of the flue gas to be treated.

[0006] The present application provides a wet desulfurization dust collector, which includes:

[0007] The spray tank comprises a hollow inner cavity, the top of the spray tank is provided with a vertically arranged air outlet, and the lower side wall of the spray tank is provided with an air inlet for connecting with the smoke to be treated;

[0008] A spherical packing layer is fixedly connected to the inner cavity of the spray tank, and the spherical packing layer is provided with a through hole;

[0009] At least one spray pipe is arranged in the inner cavity of the spray tank and is located above the spherical packing layer, and a plurality of spray heads are arranged at intervals on one side of the spray pipe toward the bottom of the spray tank;

[0010] A rotating shaft passes through the spherical filler layer along the through hole;

[0011] A kinetic energy recovery impeller is disposed at the air outlet on the top of the spray tank and is fixedly connected to the rotating shaft, and is used to drive the rotating shaft to rotate under the impetus of the smoke;

[0012] A water supply tank is connected to the inner cavity of the spray tank, and a circulation pump is also connected between the water supply tank and the spray pipe;

[0013] Among them, the top of the spherical filler layer is fixedly connected with a support seat near the circumference of the through hole, and the top of the support seat at least includes a vertical descent section and a slow rise section; the circumference of the rotating shaft is fixedly connected with an impact block, and the impact block is also provided with a protrusion for fitting the top wall of the support seat, and the impact block is used to move along the top wall of the support seat driven by the rotating shaft.

[0014] In some embodiments, it also includes:

[0015] The stirring rod is fixedly connected to a side of the rotating shaft away from the kinetic energy recovery impeller.

[0016] In some embodiments, it also includes:

[0017] The protective cover is fixedly connected to the spherical filler layer and is arranged on the peripheral side of the support seat. A connecting hole for the shaft to pass through is opened on the top of the protective cover. The protective cover is used to accommodate the impact block and the support seat in its own cavity.

[0018] In some embodiments, the protective cover comprises:

[0019] A cap body, the bottom of which is open, and the connecting hole is opened at the top of the cap body, and the inner diameter of the connecting hole is smaller than the outer diameter of the impact block;

[0020] The accordion connection part is arranged at the bottom of the cap body and is fixedly connected to the cap body. One end of the accordion connection part away from the cap body is fixedly connected to the spherical filler layer.

[0021] In some embodiments, a first connecting pipe is fixedly connected to the lower portion of the spray tank, a second connecting pipe is connected to the water supply tank, and the first connecting pipe is in communication with the second connecting pipe.

[0022] In some embodiments, a filter is further disposed between the first connecting tube and the second connecting tube.

[0023] In some embodiments, a locking valve is also provided on the first connecting pipe.

[0024] In some embodiments, a spoiler is fixedly connected to the inner cavity of the spray tank, and the spoiler is arranged below the air inlet. The area between the spoiler and the bottom wall of the spray tank is used to accommodate solid impurities.

[0025] In some embodiments, the lower outer wall of the spray tank is also connected to a water outlet pipe communicating with the inner cavity, and the water outlet pipe is also connected to a water outlet valve.

[0026] In some embodiments, the bottom wall of the spray tank is configured as an inclined surface, and the water outlet pipe is disposed at a lower position of the bottom wall of the spray tank.

[0027] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0028] 1. Reduce the probability of solid impurities adhering to the sprinkler head by setting a spherical packing layer under the sprinkler pipe, and use the spherical packing layer to block the probability of solid impurities in the flue gas to be treated adhering to the sprinkler port. At the same time, the alkaline limestone slurry sprayed from the sprinkler head is further sputtered at the spherical packing layer, which is convenient for full contact with the sulfur-containing gas in the flue gas to be treated, and forms crystals after chemical reaction, thereby treating the sulfur-containing gas in the flue gas to be treated;

[0029] 2. The kinetic energy recovery impeller is used to recover the kinetic energy of the flue gas during movement, thereby driving the rotation of the shaft, and the impact block is used to move along the top wall of the support seat, so as to realize the reciprocating motion of the impact block in the vertical direction, thereby exerting a vertical impact force on the spherical packing layer, so that the solid impurities attached to the spherical packing layer move toward the bottom wall of the inner cavity of the spray tank, reducing the probability of solid crystallization attached to the spray head, and ensuring the treatment efficiency of desulfurization and dust removal of the flue gas to be treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 A structural cross-sectional view of a wet desulfurization dust collector provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the outer wall of a support base of a wet desulfurization dust collector provided in an embodiment of the present application;

[0033] Figure 3 A three-dimensional structural diagram of an impact block of a wet desulfurization dust collector provided in an embodiment of the present application;

[0034] Figure 4 A schematic structural diagram of a protective cover for a wet desulfurization dust collector provided in an embodiment of the present application.

[0035] Figure numerals: 1, spray tank; 101, inner cavity; 102, air outlet; 102, air inlet; 2, spherical filler layer; 3, spray pipe; 31, spray head; 4, rotating shaft; 5, kinetic energy recovery impeller; 6, water supply tank; 7, circulating pump; 8, support seat; 81, vertical drop section; 82, slow rise section; 9, impact block; 91, protrusion; 10, stirring rod; 11, protective cover; 111, connecting hole; 112, cap body; 113, accordion connecting part; 12, first connecting pipe; 13, second connecting pipe; 14, filter; 15, locking valve; 16, spoiler layer; 17, water outlet pipe; 18, water outlet valve. DETAILED DESCRIPTION

[0036] 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 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.

[0037] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application 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 a limitation on the present application. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, 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 a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] Reference Figure 1 , Figure 2 and Figure 3 , the embodiment of the present application provides a wet desulfurization dust collector, which includes:

[0039] The spray tank 1 comprises a hollow inner cavity 101, a vertically arranged air outlet 102 is provided on the top of the spray tank 1, and an air inlet 102 for connecting with the smoke to be treated is provided on the lower side wall of the spray tank 1;

[0040] The spherical packing layer 2 is fixedly connected to the inner cavity 101 of the spray tank 1, and the spherical packing layer 2 is provided with a through hole;

[0041] At least one spray pipe 3 is arranged in the inner cavity 101 of the spray tank 1 and is located above the spherical packing layer 2. The spray pipe 3 is also provided with a plurality of spray heads 31 at intervals on one side toward the bottom of the spray tank 1;

[0042] A rotating shaft 4 passes through the spherical filler layer 2 along the through hole;

[0043] The kinetic energy recovery impeller 5 is disposed at the gas outlet 102 at the top of the spray tank 1 and is fixedly connected to the rotating shaft 4, and is used to drive the rotating shaft 4 to rotate under the impetus of the smoke;

[0044] A water supply tank 6 is connected to the inner cavity 101 of the spray tank 1, and a circulation pump 7 is also connected between the water supply tank 6 and the spray pipe;

[0045] Among them, the top of the spherical filler layer 2 is fixedly connected with a support seat 8 near the circumference of the through hole, and the top of the support seat 8 at least includes a vertical drop section 81 and a slow rise section 82; the circumference of the rotating shaft 4 is fixedly connected with an impact block 9, and the impact block 9 is also provided with a protrusion 91 for fitting the top wall of the support seat 8, and the impact block 9 is used to move along the top wall of the support seat 8 driven by the rotating shaft 4.

[0046] The spray tank 1 and the water supply tank 6 contain alkaline limestone slurry for treating the flue gas to be treated. The spherical filler layer 2 is horizontally arranged in the spray tank 1 to slow down the movement speed of the flue gas to be treated and absorb solid impurities in the flue gas to be treated.

[0047] The spray pipe 3 may be provided with one or more spray pipes. When the spray pipes 3 are provided with more than one spray pipe, each spray pipe 3 is spaced apart along the height direction of the spray tank 1. The spray pipe 3 is annular and is fixed to the upper part of the inner cavity 101 of the spray tank 1 by a pipe clamp.

[0048] In this embodiment, three spray heads 31 are provided, and the spray heads 31 are evenly distributed on the spray pipe 3. The water inlet of the circulation pump 7 is connected to the inner cavity 101 of the water supply tank 6, and the water outlet of the circulation pump 7 is connected to the spray pipe 3 through a pipe.

[0049] The rotating shaft 4 is vertically arranged in the inner cavity 101 of the spray tank 1 , and the kinetic energy recovery impeller 5 is horizontally arranged. The kinetic energy recovery impeller 5 and the rotating shaft 4 are connected as a whole by bolts.

[0050] The bottom wall of the support seat 8 is connected to the top of the spherical filler layer 2 by bolts, and the top wall of the support seat 8 includes at least a vertical drop section 81 and a slow rise section 82; at the same time, the impact block 9 is integrally formed with the rotating shaft 4, and the bottom of the impact block 9 is provided with a protrusion 91 for fitting the top wall of the support seat 8. The number of protrusions 91 on the impact block 9 is the same as the number of the vertical drop section 81 and the slow rise section 82 on the top of the support seat 8. In the present embodiment, the number of protrusions 91 on the impact block 9 is two.

[0051] When the kinetic energy recovery impeller 5 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the impact block 9 to rotate. When the protrusion 91 of the impact block 9 moves along the slow-rising section 82 of the support seat 8, the vertical height of the rotating shaft 4 gradually increases under the support of the impact block 9. When the protrusion 91 of the impact block 9 moves to the vertical descending part of the support seat 8, the impact block 9 and the support seat 8 lose support instantly. The rotating shaft 4 drives the impact block 9 to transmit the vertical impact force to the support seat 8 under the action of its own gravity. At the same time, the support seat 8 transmits the impact force to the spherical packing layer 2, thereby causing the spherical packing layer 2 to vibrate and cause the solid impurities attached to the spherical packing layer 2 to fall to the bottom of the inner cavity 101 of the spray tank 1.

[0052] When the alkaline limestone slurry in the spray head 31 is sprayed out, it splashes on the spherical packing layer 2, so that the alkaline limestone slurry is evenly distributed on the spherical packing layer 2, and the sputtered alkaline limestone slurry is used to treat the sulfur-containing gas in the flue gas to be treated through a chemical reaction. At the same time, the subsequent sprayed alkaline limestone slurry can continuously impact the spherical packing layer 2, so that the crystals and solid impurities on the spherical packing layer 2 are driven to the bottom of the inner cavity 101 of the spray tank 1.

[0053] In the embodiment of the present application, a spherical packing layer 2 is arranged below the spray pipe 3, and the spherical packing layer 2 is used to block the probability of solid impurities in the flue gas to be treated from adhering to the spray head 31. At the same time, the alkaline limestone slurry sprayed from the spray head 31 is further sputtered at the spherical packing layer 2, so as to fully contact with the sulfur-containing gas in the flue gas to be treated, and form crystals after chemical reaction, so as to treat the sulfur-containing gas in the flue gas to be treated; further, the kinetic energy recovery impeller 5 is used to recover the kinetic energy of the flue gas during movement, thereby driving the rotating shaft 4 to rotate, and the impact block 9 is used to move along the top wall of the support seat 8, so as to realize the reciprocating motion of the impact block 9 in the vertical direction, thereby realizing the application of a vertical impact force to the spherical packing layer 2, so that the solid impurities attached to the spherical packing layer 2 move toward the bottom wall of the inner cavity 101 of the spray tank 1, thereby reducing the probability of solid crystals adhering to the spray head 31, and ensuring the treatment efficiency of desulfurization and dust removal of the flue gas to be treated.

[0054] In some embodiments, in order to further ensure the desulfurization and dust removal effect of the flue gas to be treated, the wet desulfurization and dust removal device provided in the present application also includes:

[0055] The stirring rod 10 is fixedly connected to a side of the rotating shaft 4 away from the kinetic energy recovery impeller 5 .

[0056] The stirring rod 10 is in the shape of an elongated strip and is horizontally arranged at the bottom of the inner cavity 101 of the spray tank 1 . The stirring rod 10 is integrally connected to an end of the rotating shaft 4 away from the kinetic energy recovery impeller 5 by bolts.

[0057] When the alkaline limestone slurry sprayed by the spray head 31 falls on the spherical packing layer 2, the alkaline lime water molten salt reacts chemically with the sulfur-containing gas in the flue gas to be treated, and at the same time passes through the spherical packing layer 2 and drives the solid impurities to move toward the bottom of the spray tank 1. The alkaline limestone slurry gathers at the bottom of the inner cavity 101 of the spray tank 1, and the stirring rod 10 driven by the rotating shaft 4 rotates, thereby driving the alkaline limestone slurry to move, ensuring that the sulfur-containing gas in the flue gas to be treated introduced into the air inlet pipe is fully in contact with the alkaline limestone slurry and chemically reacts, thereby further improving the treatment effect of the sulfur-containing gas.

[0058] Reference Figure 4 In some embodiments, the wet desulfurization dust collector provided by the present application further includes:

[0059] The protective cover 11 is fixedly connected to the spherical filler layer 2 and is arranged on the peripheral side of the support seat 8. A connecting hole 111 for the rotating shaft 4 to pass through is opened on the top of the protective cover 11. The protective cover 11 is used to accommodate the impact block 9 and the support seat 8 in its own cavity.

[0060] Exemplarily, the protective cover 11 in the wet desulfurization dust collector provided by the present invention includes a cap body 112 and an accordion connecting part 113 .

[0061] The cap body 112 is open at the bottom and the connecting hole 111 is opened at the top. The inner diameter of the connecting hole 111 is smaller than the outer diameter of the impact block 9.

[0062] The accordion connection part 113 is disposed at the bottom of the cap body 112 and fixedly connected to the cap body 112 . One end of the accordion connection part 113 away from the cap body 112 is fixedly connected to the spherical filler layer 2 .

[0063] The accordion connection part 113 is made of rubber material, and is integrally formed with the cap body 112, and is used to wrap the impact block 9 and the support seat 8 in its internal space, reducing the corrosion of the support seat 8 and the impact block 9 by the alkaline limestone slurry in the outside world. At the same time, the ductility of the accordion connection part 113 is utilized to change according to the height change of the impact block 9, thereby reducing the resistance generated by the up and down movement of the impact block 9.

[0064] In some embodiments, a first connecting pipe 12 is fixedly connected to the lower portion of the spray tank 1 , a second connecting pipe 13 is connected to the water supply tank 6 , and the first connecting pipe 12 is in communication with the second connecting pipe 13 .

[0065] In some embodiments, a filter 14 is further disposed between the first connecting pipe 12 and the second connecting pipe 13 . The filter 14 may be implemented as a filter tank or a filter plate. In the embodiment of the present application, the filter 14 is implemented as a filter plate.

[0066] The flue gas to be treated is passed into the spray tank 1 through the air inlet 102. After entering the spray tank 1, the flue gas to be treated comes into contact with the alkaline limestone slurry stored in the lower part of the inner cavity 101 of the spray tank 1. At the same time, the solid impurities in the flue gas to be treated are suspended in the alkaline limestone slurry stored in the lower part of the inner cavity 101 of the spray tank 1. When passing through the spherical filler layer 2, the flue gas to be treated is further contacted with the alkaline limestone slurry sprayed by the spray head 31, and chemical reactions and crystallization are carried out. In order to improve the utilization rate of water resources, the alkaline limestone slurry stored in the spray pipe is returned to the water supply tank 6 through the first connecting pipe 12. The solid impurities in the spray tank 1 are filtered by the filter 14 when passing through the first connecting pipe 12, thereby reducing the probability of clogging the spray head 31 through the circulation pump 7, thereby ensuring the treatment effect of the flue gas to be treated.

[0067] In some embodiments, a locking valve 15 is further provided on the first connecting pipe 12 .

[0068] By adopting the above technical solution, the locking valve 15 can be implemented as a ball valve, and the locking valve 15 can seal the alkaline limestone slurry in the first connecting pipe 12, thereby facilitating the replacement of the filter 14 with reduced filtering performance, thereby ensuring the filtering effect of solid impurities in the alkaline limestone slurry in the spray tank 1.

[0069] In some embodiments, a spoiler is fixedly connected to the inner cavity 101 of the spray tank 1, and the spoiler is arranged below the air inlet 102. The area between the spoiler and the bottom wall of the spray tank 1 is used to accommodate solid impurities.

[0070] The spoiler layer 16 can be implemented as a porous plate for the solid impurities crystallized in the flue gas to be treated to adhere and be deposited at the bottom of the inner cavity 101 of the spray tank 1. By limiting the solid impurities to the area between the spoiler layer 16 and the bottom wall of the spray tank 1, the effect of the alkaline limestone slurry on the top of the spoiler layer 16 on treating sulfur-containing gases is improved.

[0071] In some embodiments, the lower outer wall of the spray tank 1 is also connected to a water outlet pipe 17 communicating with the inner cavity 101 , and the water outlet pipe 17 is also connected to a water outlet valve 18 .

[0072] By adopting the above technical solution, the spray head 31 in the spray tank 1 will gradually accumulate solid impurities at the bottom of the inner cavity 101 after long-term use. By opening the water outlet valve 18, the solid impurities precipitated in the spray tank 1 leave the inner cavity 101 of the spray tank 1 under the drive of the alkaline limestone slurry in the inner cavity 101 of the spray tank 1, which is convenient for users to recycle the solid precipitation and at the same time reduces the pressure of the spoiler 16 for filtering solid impurities.

[0073] In some embodiments, the bottom wall of the spray tank 1 is arranged as an inclined surface, and the water outlet pipe 17 is arranged at a lower position of the bottom wall of the spray tank 1 .

[0074] The bottom wall of the spray tank 1 is set as an inclined surface. The alkaline limestone slurry accumulated at the bottom of the inner cavity 101 of the spray tank 1 reacts chemically with the sulfur-containing gas to generate solid impurities. The generated solid impurities pass through the turbulence layer 16 and settle to the bottom of the inner cavity 101 of the spray tank 1. Then, the solid impurities move along the inclined bottom wall of the inner cavity 101 of the spray tank 1 toward the water outlet pipe 17, so that the pressure of the alkaline limestone slurry can be used to discharge the solid impurities from the inner cavity 101 of the spray tank 1 through the water outlet pipe 17, thereby improving the desulfurization and dust removal treatment effect of the spray tank 1 on the flue gas to be treated.

[0075] Furthermore, in the embodiment of the present application, an observation window for observing the precipitation state of solid impurities in the inner cavity 101 of the spray tank 1 can be provided at the bottom of the spray tank 1 .

[0076] By adopting the above technical solution, the precipitation state of the solid impurities in the inner cavity 101 of the spray tank 1 can be observed through the observation window, so that the user can accurately judge the time to clean the solid impurities in the alkaline limestone slurry.

[0077] The technical solution provided in the embodiments of the present application has the following technical effects:

[0078] 1. Reduce the probability of solid impurities adhering to the spray head 31 by setting a spherical packing layer 2 below the spray pipe 3, and use the spherical packing layer 2 to block the probability of solid impurities in the flue gas to be treated adhering to the spray port. At the same time, the alkaline limestone slurry sprayed from the spray head 31 is further sputtered at the spherical packing layer 2, which is convenient for full contact with the sulfur-containing gas in the flue gas to be treated, and forms crystals after chemical reaction, thereby treating the sulfur-containing gas in the flue gas to be treated;

[0079] 2. The kinetic energy recovery impeller 5 is used to recover the kinetic energy of the flue gas during movement, thereby driving the rotating shaft 4 to rotate, and the impact block 9 is used to move along the top wall of the support seat 8, so that the impact block 9 can reciprocate in the vertical direction, thereby exerting a vertical impact force on the spherical packing layer 2, so that the solid impurities attached to the spherical packing layer 2 move toward the bottom wall of the inner cavity 101 of the spray tank 1, reducing the probability of solid crystals attached to the spray head 31, and ensuring the treatment efficiency of desulfurization and dust removal of the flue gas to be treated.

[0080] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0081] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A wet desulfurization dust collector, characterized in that: include: A spray tank (1) comprises a hollow inner cavity (101), a vertically arranged air outlet (102) is provided on the top of the spray tank (1), and an air inlet (102) for communicating with the flue gas to be treated is provided on the lower side wall of the spray tank (1); A spherical filler layer (2) is fixedly connected to the inner cavity (101) of the spray tank (1), and the spherical filler layer (2) is provided with a through hole; At least one spray pipe (3) is arranged in the inner cavity (101) of the spray tank (1) and is located above the spherical filler layer (2); a plurality of spray heads (31) are arranged at intervals on one side of the spray pipe (3) facing the bottom of the spray tank (1); A rotating shaft (4) passes through the spherical filler layer (2) along the through hole; A kinetic energy recovery impeller (5) is arranged at the air outlet (102) at the top of the spray tank (1) and is fixedly connected to the rotating shaft (4) and is used to drive the rotating shaft (4) to rotate under the impetus of the smoke; A water supply tank (6) is in communication with the inner cavity (101) of the spray tank (1), and a circulation pump (7) is also connected between the water supply tank (6) and the spray pipe; Wherein, a support seat (8) is fixedly connected to the top of the spherical filler layer (2) near the circumference of the through hole, and the top of the support seat (8) includes at least a vertical drop section (81) and a slow rise section (82); an impact block (9) is fixedly connected to the circumference of the rotating shaft (4), and the impact block (9) is also provided with a protrusion (91) for fitting against the top wall of the support seat (8), and the impact block (9) is used to move along the top wall of the support seat (8) driven by the rotating shaft (4).

2. The wet desulfurization dust collector according to claim 1, characterized in that: Also includes: The stirring rod (10) is fixedly connected to a side of the rotating shaft (4) away from the kinetic energy recovery impeller (5).

3. The wet desulfurization dust collector according to claim 1, characterized in that: Also includes: A protective cover (11) is fixedly connected to the spherical filler layer (2) and is arranged on the peripheral side of the support seat (8). A connecting hole (111) for the rotating shaft (4) to pass through is provided on the top of the protective cover (11). The protective cover (11) is used to accommodate the impact block (9) and the support seat (8) in its own cavity.

4. The wet desulfurization dust collector according to claim 3, characterized in that: The protective cover (11) comprises: The cap body (112) is open at the bottom, and the connecting hole (111) is opened at the top, and the inner diameter of the connecting hole (111) is smaller than the outer diameter of the impact block (9); The accordion connection part (113) is arranged at the bottom of the cap body (112) and is fixedly connected to the cap body (112); one end of the accordion connection part (113) away from the cap body (112) is fixedly connected to the spherical filler layer (2).

5. The wet desulfurization dust collector according to claim 1, characterized in that: The lower part of the spray tank (1) is fixedly connected to a first connecting pipe (12), the water supply box (6) is connected to a second connecting pipe (13), and the first connecting pipe (12) is in communication with the second connecting pipe (13).

6. The wet desulfurization dust collector according to claim 1, characterized in that: A filter (14) is also provided between the first connecting pipe (12) and the second connecting pipe (13).

7. The wet desulfurization dust collector according to claim 1, characterized in that: The first connecting pipe (12) is also provided with a locking valve (15).

8. The wet desulfurization dust collector according to claim 1, characterized in that: A spoiler is also fixedly connected to the inner cavity (101) of the spray tank (1), and the spoiler is arranged below the air inlet (102). The area between the spoiler and the bottom wall of the spray tank (1) is used to accommodate solid impurities.

9. The wet desulfurization dust collector according to claim 8, characterized in that: The lower outer wall of the spray tank (1) is also connected to a water outlet pipe (17) communicating with the inner cavity (101), and the water outlet pipe (17) is also connected to a water outlet valve (18).

10. The wet desulfurization dust collector according to claim 9, characterized in that: The bottom wall of the spray tank (1) is arranged as an inclined surface, and the water outlet pipe (17) is arranged at a lower position of the bottom wall of the spray tank (1).

Images