A desulfurization tower for petroleum coke calcination flue gas

Abstract

This invention belongs to the field of waste gas treatment technology, and in particular to a desulfurization tower for petroleum coke calcination flue gas. It includes a tower body with several circumferentially arrayed and equidistantly distributed stirring blades. A dual-spray system is installed on each stirring blade. The tower body also includes a switching mechanism for driving the stirring blades to rotate and activating a dry powder mode during rotation. The dual-spray system allows external aqueous agents to sequentially pass through a water pipe, an aqueous agent channel within an annular shaft, a first semi-circular channel, and a bend pipe, ultimately being sprayed out through a nozzle. External dry powder sequentially passes through a powder pipe, a dry powder channel within the annular shaft, and a second semi-circular channel, ultimately being thrown out through a transverse support rod, thus solving the problem of the relatively limited usage of traditional desulfurization towers.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a desulfurization tower for petroleum coke calcination flue gas. Background Technology

[0002] Petroleum coke is a black or dark gray hard solid with a metallic luster and a porous structure. Its composition includes 90%-97% carbon, 1.5%-8% hydrogen, and also contains nitrogen, chlorine, sulfur, and heavy metal compounds. Calcined petroleum coke is a carbon material produced by calcining petroleum coke at a high temperature of approximately 1300℃.

[0003] A desulfurization tower is a tower-type device used to treat industrial waste gas for desulfurization. Initially, desulfurization towers were most widely used when constructed of granite. They utilize the principle of water film desulfurization and dust removal and are also known as granite water film desulfurization and dust removal devices or marble water film desulfurization and dust removal devices.

[0004] Existing desulfurization towers either spray water or spray dry powder. Powder spray desulfurization does not produce desulfurization wastewater and does not require a wastewater treatment system, thus reducing environmental pressure. However, its desulfurization efficiency is significantly lower than that of water-based desulfurization, making it more suitable for use in situations where water resources are scarce. Aqueous desulfurization involves adding alkaline desulfurizing agents, such as limestone, to the water. The desulfurization efficiency can reach 95%+, making it suitable for high-concentration flue gas. However, the desulfurization wastewater contains heavy metals, chloride ions, etc., which require treatment and are costly. Existing desulfurization towers use a relatively simple desulfurization method, making it difficult to cope with various situations and needs. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a petroleum coke calcination flue gas desulfurization tower, which more accurately solves the problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: This invention proposes a desulfurization tower for petroleum coke calcination flue gas, comprising a tower body, wherein a plurality of stirring blades arranged in a circumferential array and equidistantly distributed are provided in the tower body, wherein a dual-spray system is provided on the stirring blades, and wherein a switching mechanism is provided in the tower body for driving the stirring blades to rotate and enabling the dry powder mode to be activated during rotation.

[0007] Preferably, the dual-spray system includes two transverse support rods that are longitudinally slidably connected to the inner wall of the tower body and distributed vertically. The two transverse support rods are rotatably connected to the same annular shaft. A fixed shaft is fixedly connected to the surface of the annular shaft, passing through and fixedly connected to the stirring blade. An annular cover plate is provided on the upper edge of the annular shaft and fits against it. A water pipe and a powder pipe are installed on the annular cover plate. The water pipe and the powder pipe pass through the side wall of the tower body and are fixedly connected to the tower body.

[0008] Preferably, the annular shaft has a liquid channel corresponding to each water pipe and a dry powder channel corresponding to each powder pipe. Each fixed shaft has a first semicircular channel and a second semicircular channel. The first semicircular channel is connected to the liquid channel, and the second semicircular channel is connected to the dry powder channel.

[0009] Preferably, a bent pipe connected to the first semicircular channel is fixedly installed on one side wall of the stirring blade, a nozzle is installed at the free end of the bent pipe, and a dry powder discharge channel connected to the second semicircular channel is started on the side of the stirring blade away from the bent pipe.

[0010] Preferably, the sidewall of the stirring blade is slidably connected to a sealing plate for covering the dry powder discharge channel, and the sealing plate has a round hole at the beginning.

[0011] Preferably, the switching mechanism includes a gear one rotatably connected to a horizontal support rod located above and driven by an external motor, and a gear two fixedly connected to the annular shaft, wherein the gear two and the gear one mesh with each other.

[0012] Preferably, each of the stirring blades corresponds to a rectangular frame that passes through the side wall of the annular shaft and is telescopically connected to the annular shaft. The inner wall of the rectangular frame is integrally formed with a rack. The lower edge of the annular shaft is fixedly connected to a base plate. A gear three is rotatably connected to the base plate. Each of the rectangular frames is provided with a gear four that meshes with the rack and is rotatably connected to the base plate. Each gear four meshes with gear three.

[0013] Preferably, a rectangular pipe adapted to the rectangular frame is integrally fixed to the surface of the annular shaft. A support bar is integrally fixed to the open end of one of the rectangular pipes. A linkage rod that is telescopically connected to the support bar passes through the support bar. One end of the linkage rod is fixedly connected to the corresponding rectangular frame. A spring is sleeved on the surface of the linkage rod. One end of the spring is fixedly connected to the linkage rod, and the other end is fixedly connected to the surface of the support bar. A bending rod is fixedly connected between each rectangular frame and its corresponding sealing plate.

[0014] Preferably, an extension rod is fixedly connected to the inner wall of the tower body, and a semi-circular rod is fixedly connected to one end of the extension rod. The center of the semi-circular rod is the same as the center of the annular shaft, and both ends of the semi-circular rod are inclined. A vibration mechanism is provided on the stirring blade. The vibration mechanism includes a sleeve shaft rotatably connected to one of the transverse support rods and sleeved on the annular shaft. Several equidistantly distributed spring rods are fixedly installed on the sleeve shaft. An inclined triangular block is fixedly connected to the side of each stirring blade near the annular shaft.

[0015] Preferably, the tower body is provided with a lifting mechanism for driving the stirring blades to move vertically. The lifting mechanism includes a threaded rod rotatably connected to the tower body and passing through an annular shaft. A strip plate is fixedly connected to the inner wall of the tower body. An internal gear ring is fixedly connected to one end of the strip plate. A gear five is provided at the upper end of the threaded rod and fixedly connected to it via an electric telescopic rod. The gear five is adapted to the internal gear ring. An internal threaded sleeve adapted to the thread of the threaded rod is fixedly connected to the inner wall of the annular shaft.

[0016] Compared with the prior art, the present invention provides a petroleum coke calcination flue gas desulfurization tower, which has the following beneficial effects: The dual-spray system allows external liquid to pass sequentially through the water pipe, the liquid channel inside the annular shaft, the first semi-circular channel, and the bend pipe, and finally be sprayed out through the nozzle; The external dry powder will pass through the powder pipe, the dry powder channel inside the annular shaft and the second semi-circular channel in sequence, and finally be thrown out through the horizontal support rod, thus solving the problem of the relatively simple use of traditional desulfurization towers. The switching mechanism can drive the stirring blades to rotate, and the stirring blades can drive the bending pipe and nozzle to rotate while spraying the water agent, so that the water agent can be fully mixed with the flue gas. At the same time, the stirring blades can rotate while spraying dry powder, so that the dry powder is sprayed more evenly, thereby effectively improving the overall efficiency of the device in treating flue gas. At the same time, the switching mechanism can also drive the sealing plate to slide along the side wall of the mixing blade, so that the dry powder discharge channel and the round hole are connected to each other, and the dry powder can be thrown out from the dry powder discharge channel to complete the switching of the dry powder mode. The vibration mechanism can make the mixing blades vibrate, thereby preventing the dry powder discharge channel and the round hole from becoming blocked; The lifting mechanism can move the stirring blades downward into the wastewater to stir it, preventing substances in the wastewater from settling and clumping inside the tower, which would lead to problems that are difficult to treat later. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the tower body of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a cross-sectional view of the fixed shaft in this invention. Figure 5 This is a structural schematic diagram showing the location of the annular cover plate in this invention; Figure 6This is a structural diagram showing the location of the gear in this invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 8 This is a structural diagram showing the location of the bending rod in this invention; Figure 9 This is a structural schematic diagram showing the location of the semi-circular rod in this invention; Figure 10 For the present invention Figure 9 A magnified structural diagram at point C.

[0018] In the diagram: 1. Tower body; 2. Stirring blade; 31. Horizontal support rod; 32. Annular shaft; 33. Fixed shaft; 34. Annular cover plate; 35. Water pipe; 36. Powder pipe; 37. Bent pipe; 38. Nozzle; 39. First semicircular channel; 310. Second semicircular channel; 311. Dry powder discharge channel; 41. Sealing plate; 42. Circular hole; 51. Gear one; 52. Gear two; 53. Rectangular frame; 5 4. Rack; 55. Base plate; 56. Gear three; 57. Gear four; 58. Rectangular pipe; 59. Support bar; 510. Linkage rod; 511. Spring one; 512. Bending rod; 513. Extension rod; 514. Semicircular rod; 61. Sleeve shaft; 62. Spring rod; 63. Inclined triangular block; 71. Threaded rod; 72. Strip plate; 73. Internal gear ring; 74. Gear five; 75. Internal threaded sleeve. Detailed Implementation

[0019] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Example

[0020] like Figures 1-5 As shown, an embodiment of the present invention provides a desulfurization tower for petroleum coke calcination flue gas, comprising a tower body 1, wherein a plurality of stirring blades 2 arranged in a circumferential array and equidistantly distributed are provided inside the tower body 1, and a dual-spray system is provided on the stirring blades 2.

[0021] The dual-spray system includes two transverse support rods 31 that are longitudinally slidably connected to the inner wall of the tower body 1 and distributed vertically. The two transverse support rods 31 are rotatably connected to the same annular shaft 32. A fixed shaft 33 is fixedly connected to the surface of the annular shaft 32, passing through and fixedly connected to the stirring blade 2. An annular cover plate 34 is provided on the upper edge of the annular shaft 32 and fits against it. A water pipe 35 and a powder pipe 36 are installed on the annular cover plate 34. The water pipe 35 and the powder pipe 36 pass through the side wall of the tower body 1 and are fixedly connected to the tower body 1.

[0022] Each stirring blade 2 corresponds to a water pipe 35 and a powder pipe 36.

[0023] The annular shaft 32 has a liquid channel corresponding to each water pipe 35 and a dry powder channel corresponding to each powder pipe 36. Each fixed shaft 33 has a first semicircular channel 39 and a second semicircular channel 310. The first semicircular channel 39 is connected to the liquid channel, and the second semicircular channel 310 is connected to the dry powder channel.

[0024] A bent pipe 37, which communicates with the first semicircular channel 39, is fixedly installed on one side wall of the stirring blade 2. A nozzle 38 is installed at the free end of the bent pipe 37. A dry powder discharge channel 311, which communicates with the second semicircular channel 310, is started on the side of the stirring blade 2 away from the bent pipe 37.

[0025] The dual-spray system allows external water to pass sequentially through the water pipe 35, the water channel in the annular shaft 32, the first semi-circular channel 39, and the bent pipe 37, and finally be sprayed out through the nozzle 38. The external dry powder will pass through the powder pipe 36, the dry powder channel in the annular shaft 32 and the second semi-circular channel 310 in sequence, and finally be thrown out through the horizontal support rod 31, thus solving the problem of the relatively simple use of traditional desulfurization towers.

[0026] like Figures 3-4 As shown, the side wall of the stirring blade 2 is slidably connected to a sealing plate 41 for covering the dry powder discharge channel 311, and the sealing plate 41 has round holes 42.

[0027] The sealing plate 41 is set to seal the dry powder discharge channel 311 to prevent water from entering the dry powder discharge channel 311 when working with water. When the sealing plate 41 slides to connect the dry powder discharge channel 311 and the round hole 42, the dry powder can be sprayed out from the dry powder discharge channel 311.

[0028] The tower body 1 is equipped with a switching mechanism for driving the stirring blade 2 to rotate and for activating the dry powder mode during rotation.

[0029] The switching mechanism can drive the stirring blade 2 to rotate, and the stirring blade 2 can drive the bending pipe 37 and the nozzle 38 to rotate while spraying the water agent, so that the water agent can be fully mixed with the flue gas. At the same time, the stirring blade 2 can rotate while spraying dry powder, so that the dry powder is sprayed more evenly, thereby effectively improving the overall efficiency of the device in treating flue gas. At the same time, the switching mechanism can also drive the sealing plate 41 to slide along the side wall of the stirring blade 2, so that the dry powder discharge channel 311 and the round hole 42 are connected to each other, and the dry powder can be thrown out from the dry powder discharge channel 311 to complete the switching of the dry powder mode.

[0030] like Figure 2 As shown, the switching mechanism includes a gear 51 rotatably connected to a horizontal support rod 31 located above and driven by an external motor, and a gear 52 fixedly connected to the annular shaft 32, the gear 52 and the gear 51 meshing with each other.

[0031] An external motor drives gear 51 to rotate, which in turn drives gear 52, which meshes with it, to rotate. Gear 52 then drives annular shaft 32 to rotate, which in turn drives agitator 2 to rotate via a fixed shaft 33 on its surface. Agitator 2 then drives bend pipe 37 and nozzle 38 to rotate, thereby making the sprayed liquid or the dry powder conveyed from the dry powder discharge channel 311 more uniform and better mixed with the exhaust gas.

[0032] like Figures 6-7 As shown, each of the stirring blades 2 corresponds to a rectangular frame 53 that passes through the side wall of the annular shaft 32 and is telescopically connected to the annular shaft 32. The inner wall of the rectangular frame 53 is integrally formed with a rack 54. The lower edge of the annular shaft 32 is fixedly connected to a base plate 55. A gear 3 56 is rotatably connected to the base plate 55. Each of the rectangular frames 53 is provided with a gear 4 57 that meshes with the rack 54 and is rotatably connected to the base plate 55. Each gear 4 57 meshes with the gear 3 56.

[0033] like Figures 6-10 As shown, a rectangular pipe 58 adapted to a rectangular frame 53 is integrally fixed to the surface of the annular shaft 32. A support bar 59 is integrally fixed to the opening of one of the rectangular pipes 58. A linkage rod 510 that is telescopically connected to the support bar 59 passes through it. One end of the linkage rod 510 is fixedly connected to the corresponding rectangular frame 53. A spring 511 is sleeved on the surface of the linkage rod 510. One end of the spring 511 is fixedly connected to the linkage rod 510, and the other end is fixedly connected to the surface of the support bar 59. A bending rod 512 is fixedly connected between each rectangular frame 53 and its corresponding sealing plate 41.

[0034] An extension rod 513 is fixedly connected to the inner wall of the tower body 1. A semi-circular rod 514 is fixedly connected to one end of the extension rod 513. The center of the semi-circular rod 514 is the same as the center of the annular shaft 32, and both ends of the semi-circular rod 514 are inclined.

[0035] When dry powder is needed for desulfurization, the annular shaft 32 drives the linkage rod 510 to rotate closer to the semi-circular rod 514. The linkage rod 510 will gradually contact the inclined surface at the end of the semi-circular rod 514. Restricted by the inclined surface, the linkage rod 510 will move closer to the annular shaft 32, thereby driving a rectangular frame 53 fixedly connected to it to move into the annular shaft 32. The rack 54 on the inner wall of the rectangular frame 53 can drive the fourth gear 57 to rotate, and the fourth gear 57 can drive the third gear 56 to rotate accordingly. Gear 3 56 can drive other meshing gear 4 57 to rotate, and gear 4 57 can push the rectangular frame 53 to move towards the center of the annular shaft 32 through rack 54. Thus, all rectangular frames 53 can drive the sealing plate 41 to move closer to the annular shaft 32 through bending rod 512, so that the round hole 42 on the sealing plate 41 is connected to the dry powder discharge channel 311 on the stirring blade 2, allowing the dry powder to be thrown out from the dry powder discharge channel 311 and the round hole 42. The dry powder discharge channel 311 can only be in an open state when the linkage rod 510 is restricted by the semi-circular rod 514. Therefore, during the dry powder scattering process, it is necessary to ensure that the rotation range of the linkage rod 510 does not leave the semi-circular rod 514. Thus, the annular shaft 32 and all the stirring blades 2 should be in a reciprocating rotation state.

[0036] like Figure 10 As shown, the stirring blade 2 is provided with a vibration mechanism, which includes a sleeve shaft 61 rotatably connected to one of the transverse support rods 31 and sleeved on the annular shaft 32. Several equidistantly distributed spring rods 62 are fixedly installed on the sleeve shaft 61, and each stirring blade 2 is fixedly connected to an inclined triangular block 63 on the side near the annular shaft 32.

[0037] In use, when the stirring blade 2 drives the inclined triangular block 63 fixed on one side to rotate clockwise, the spring rod 62 will be shortened due to the restriction of the inclined surface of the inclined triangular block 63. When the spring rod 62 is no longer restricted, it can give the stirring blade 2 an impact force through its own rebound force, causing the stirring blade 2 to vibrate, thereby preventing the dry powder discharge channel 311 and the round hole 42 from being blocked. When the stirring blade 2 drives the inclined triangular block 63 fixed on one side to rotate counterclockwise, the inclined triangular block 63 can drive the sleeve shaft 61 and the sleeve shaft 61 to rotate accordingly, so that the device does not vibrate when using water-based desulfurization.

[0038] like Figure 2 As shown, the tower body 1 is equipped with a lifting mechanism for driving the stirring blade 2 to move in the vertical direction.

[0039] The lifting mechanism can move the stirring blade 2 downward into the wastewater to stir the wastewater and prevent substances in the wastewater from precipitating and clumping in the tower body 1, which would lead to problems that are difficult to treat later.

[0040] When the stirring blade 2 enters the wastewater for stirring, it is necessary that no new waste gas enters the tower body 1, and the waste gas in the tower body 1 has been desulfurized. The stirring blade 2 intermittently enters the wastewater to stir it.

[0041] The lifting mechanism includes a threaded rod 71 rotatably connected inside the tower body 1 and passing through an annular shaft 32. A strip plate 72 is fixedly connected to the inner wall of the tower body 1. An internal gear ring 73 is fixedly connected to one end of the strip plate 72. A gear 74 is fixedly connected to the upper end of the threaded rod 71 via an electric telescopic rod. The gear 74 and the internal gear ring 73 are mutually adapted. An internal threaded sleeve 75 that is threadedly adapted to the threaded rod 71 is fixedly connected to the inner wall of the annular shaft 32.

[0042] When the stirring blade 2 needs to move vertically, the electric telescopic rod drives the gear five 74 to rise into the internal gear ring 73, thus blocking the rotatable state of the threaded rod 71 and preventing it from rotating. At this time, when the annular shaft 32 drives the internal threaded sleeve 75 fixed on its inner wall to rotate, the internal threaded sleeve 75 can drive the annular shaft 32 to move along the threaded rod 71, thereby enabling the stirring blade 2 to move vertically to the preset position. When the stirring blade 2 rotates in the wastewater, it can stir the wastewater and prevent impurities in the wastewater from settling and clumping. When the stirring blade 2 needs to rotate at a certain position without moving up and down, the gear 74 is disengaged from the internal gear ring 73 by the electric telescopic rod. Then, when the annular shaft 32 rotates, it can drive the threaded rod 71 to rotate through the internal threaded sleeve 75. In this case, the internal threaded sleeve 75 cannot move up and down along the threaded rod 71.

[0043] Working principle: The dual-spray system allows external liquid to pass sequentially through water pipe 35, liquid channel in annular shaft 32, first semicircular channel 39 and bend pipe 37, and finally be sprayed out through nozzle 38; The external dry powder will pass through the powder pipe 36, the dry powder channel in the annular shaft 32 and the second semi-circular channel 310 in sequence, and finally be thrown out through the horizontal support rod 31, thus solving the problem of the relatively simple use of traditional desulfurization towers. An external motor drives gear 51 to rotate, which in turn drives gear 52, which meshes with it, to rotate. Gear 52 drives annular shaft 32 to rotate, which in turn drives agitator 2 to rotate via fixed shaft 33. Agitator 2 drives bend pipe 37 and nozzle 38 to rotate, thereby making the sprayed liquid or the dry powder conveyed from dry powder discharge channel 311 more uniform and better mixed with the exhaust gas. In the initial state, the dry powder discharge channel 311 is sealed by the sealing plate 41 to prevent water from entering the dry powder discharge channel 311 when working with water. When dry powder is needed for desulfurization, the annular shaft 32 drives the linkage rod 510 to rotate closer to the semi-circular rod 514. The linkage rod 510 will gradually contact the inclined surface at the end of the semi-circular rod 514. Restricted by the inclined surface, the linkage rod 510 will move closer to the annular shaft 32, thereby driving a rectangular frame 53 fixedly connected to it to move into the annular shaft 32. The rack 54 on the inner wall of the rectangular frame 53 can drive the fourth gear 57 to rotate, and the fourth gear 57 can drive the third gear 56 to rotate accordingly. Gear 3 56 can drive other meshing gear 4 57 to rotate, and gear 4 57 can push the rectangular frame 53 to move towards the center of the annular shaft 32 through rack 54. Thus, all rectangular frames 53 can drive the sealing plate 41 to move closer to the annular shaft 32 through bending rod 512, so that the round hole 42 on the sealing plate 41 is connected to the dry powder discharge channel 311 on the stirring blade 2, allowing the dry powder to be thrown out from the dry powder discharge channel 311 and the round hole 42. Among them, the dry powder discharge channel 311 can only be in an open state when the linkage rod 510 is restricted by the semi-circular rod 514. Therefore, during the dry powder scattering process, it is necessary to ensure that the rotation range of the linkage rod 510 does not leave the semi-circular rod 514. Thus, the annular shaft 32 and all the stirring blades 2 should be in a reciprocating rotation state. When the stirring blade 2 drives the inclined triangular block 63 fixed on one side to rotate clockwise, the spring rod 62 will be restricted by the inclined surface of the inclined triangular block 63 and thus shorten. When the spring rod 62 is no longer restricted, it can give the stirring blade 2 an impact force through its own rebound force, causing the stirring blade 2 to vibrate, thereby preventing the dry powder discharge channel 311 and the round hole 42 from being blocked. When the stirring blade 2 drives the inclined triangular block 63 fixed on one side to rotate counterclockwise, the inclined triangular block 63 can drive the sleeve shaft 61 and the sleeve shaft 61 to rotate accordingly, so that the device does not vibrate when using water-based desulfurization. When the stirring blade 2 needs to move vertically, the electric telescopic rod drives the gear five 74 to rise into the internal gear ring 73, thus blocking the rotatable state of the threaded rod 71 and preventing it from rotating. At this time, when the annular shaft 32 drives the internal threaded sleeve 75 fixed on its inner wall to rotate, the internal threaded sleeve 75 can drive the annular shaft 32 to move along the threaded rod 71, thereby enabling the stirring blade 2 to move vertically to the preset position. When the stirring blade 2 rotates in the wastewater, it can stir the wastewater and prevent impurities in the wastewater from settling and clumping.

[0044] When the stirring blade 2 needs to rotate at a certain position without moving up and down, the gear 74 is disengaged from the internal gear ring 73 by the electric telescopic rod. Then, when the annular shaft 32 rotates, it can drive the threaded rod 71 to rotate through the internal threaded sleeve 75. In this case, the internal threaded sleeve 75 cannot move up and down along the threaded rod 71.

[0045] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A desulfurization tower for petroleum coke calcination flue gas, characterized in that, The tower body (1) includes a number of stirring blades (2) arranged in a circular array and equidistantly distributed. The stirring blades (2) are equipped with a dual spray system. The tower body (1) is equipped with a switching mechanism for driving the stirring blades (2) to rotate and enabling the dry powder mode to be activated during rotation.

2. The petroleum coke calcination flue gas desulfurization tower according to claim 1, characterized in that, The dual-spray system includes two transverse support rods (31) that are longitudinally slidably connected to the inner wall of the tower body (1) and distributed vertically. The two transverse support rods (31) are connected to the same annular shaft (32) and are rotatably connected to the annular shaft (32). A fixed shaft (33) is fixedly connected to the surface of the annular shaft (32) that passes through the stirring blade (2) and is fixedly connected to the stirring blade (2). An annular cover plate (34) is provided on the upper edge of the annular shaft (32) and fits against it. A water pipe (35) and a powder pipe (36) are installed on the annular cover plate (34). The water pipe (35) and the powder pipe (36) pass through the side wall of the tower body (1) and are fixedly connected to the tower body (1).

3. A petroleum coke calcination flue gas desulfurization tower according to claim 2, characterized in that, The annular shaft (32) has a water-based channel corresponding to each water pipe (35) and a dry powder channel corresponding to each powder pipe (36). Each fixed shaft (33) has a first semicircular channel (39) and a second semicircular channel (310). The first semicircular channel (39) is connected to the water-based channel, and the second semicircular channel (310) is connected to the dry powder channel.

4. A petroleum coke calcination flue gas desulfurization tower according to claim 3, characterized in that, One side wall of the stirring blade (2) is fixedly installed with a bent pipe (37) that communicates with the first semicircular channel (39). A nozzle (38) is installed at the free end of the bent pipe (37). A dry powder discharge channel (311) that communicates with the second semicircular channel (310) begins on the side of the stirring blade (2) away from the bent pipe (37).

5. A petroleum coke calcination flue gas desulfurization tower according to claim 4, characterized in that, The sidewall of the stirring blade (2) is slidably connected to a sealing plate (41) for covering the dry powder discharge channel (311), and the sealing plate (41) has round holes (42).

6. A petroleum coke calcination flue gas desulfurization tower according to claim 5, characterized in that, The switching mechanism includes a gear 1 (51) rotatably connected to a horizontal support rod (31) located above and driven by an external motor, and a gear 2 (52) fixedly connected to the annular shaft (32), the gear 2 (52) and the gear 1 (51) meshing with each other.

7. A petroleum coke calcination flue gas desulfurization tower according to claim 6, characterized in that, Each of the stirring blades (2) has a corresponding rectangular frame (53) that passes through the side wall of the annular shaft (32) and is telescopically connected to the annular shaft (32). The inner wall of the rectangular frame (53) is integrally formed with a rack (54). The lower edge of the annular shaft (32) is fixedly connected to a base plate (55). A gear three (56) is rotatably connected to the base plate (55). Each of the rectangular frames (53) is provided with a gear four (57) that meshes with the rack (54) and is rotatably connected to the base plate (55). Each gear four (57) meshes with gear three (56).

8. A petroleum coke calcination flue gas desulfurization tower according to claim 7, characterized in that, The annular shaft (32) has a rectangular pipe (58) that is adapted to the rectangular frame (53) integrally fixed on its surface. A support bar (59) is integrally fixed at the opening of one of the rectangular pipes (58). A linkage rod (510) that is telescopically connected to the support bar (59) passes through it. One end of the linkage rod (510) is fixedly connected to the corresponding rectangular frame (53). A spring (511) is sleeved on the surface of the linkage rod (510). One end of the spring (511) is fixedly connected to the linkage rod (510), and the other end is fixedly connected to the surface of the support bar (59). A bending rod (512) is fixedly connected between each rectangular frame (53) and its corresponding sealing plate (41).

9. A petroleum coke calcination flue gas desulfurization tower according to claim 8, characterized in that, An extension rod (513) is fixedly connected to the inner wall of the tower body (1). A semi-circular rod (514) is fixedly connected to one end of the extension rod (513). The center of the semi-circular rod (514) is the same as the center of the annular shaft (32). Both ends of the semi-circular rod (514) are inclined. A vibration mechanism is provided on the stirring blade (2). The vibration mechanism includes a sleeve shaft (61) rotatably connected to one of the transverse support rods (31) and sleeved on the annular shaft (32). Several equidistant spring rods (62) are fixedly installed on the sleeve shaft (61). An inclined triangular block (63) is fixedly connected to the side of each stirring blade (2) near the annular shaft (32).

10. A petroleum coke calcination flue gas desulfurization tower according to claim 2, characterized in that, The tower body (1) is provided with a lifting mechanism for driving the stirring blade (2) to move in the vertical direction. The lifting mechanism includes a threaded rod (71) rotatably connected inside the tower body (1) and passing through the annular shaft (32). A strip plate (72) is fixedly connected to the inner wall of the tower body (1). One end of the strip plate (72) is connected to an internal gear ring (73) fixedly connected thereto. A gear five (74) is provided at the upper end of the threaded rod (71) and is fixedly connected thereto by an electric telescopic rod. The gear five (74) is adapted to the internal gear ring (73). An internal thread sleeve (75) adapted to the thread of the threaded rod (71) is fixedly connected to the inner wall of the annular shaft (32).

Images