Flue gas treatment flow equalizing mechanism and desulfurization spray tower

Abstract

The invention discloses a flue gas treatment flow equalizing mechanism and a desulfurization spray tower, and particularly relates to flue gas treatment equipment, the flue gas treatment flow equalizing mechanism further comprises a rising diffusion plate movably arranged on the central axis of a body and directly facing a gas inlet; and the hedging gas equalizing assembly comprises energy storage cylinders arranged along diagonal lines, the four energy storage cylinders face the same center point, and the center point is located above the rising diffusion plate by a preset distance. Flue gas output by the gas inlet is subjected to rising diffusion through the rising diffusion plate, the rising diffused flue gas is moved to the center point, at the moment, the two opposite-angle energy storage cylinders emit airflow, the flue gas at the center point is scattered, homogenization treatment of the flue gas is achieved, the two sets of energy storage cylinders are arranged in an inclined and opposite-angle mode, and the energy storage cylinders are arranged in an inclined and opposite-angle mode. And as the two groups of energy storage cylinders alternately discharge gas, the flue gas at the center point is scattered for compensation, so that the flue gas is further homogenized, flue gas accumulation is reduced, and the subsequent vulcanization treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment, and more particularly to a flue gas treatment flow equalizing mechanism and a desulfurization spray tower. Background Art

[0002] Wet flue gas desulfurization with gypsum is a mature desulfurization technology for combustion flue gas. The gypsum liquid is atomized by an atomizing nozzle to form water mist, and the flue gas to be pickled is desulfurized by contact.

[0003] According to the patent number CN101301574B, publication (announcement) date: September 14, 2011, the desulfurization spray tower type disclosed is designed and improved, and reasonably optimized. The technical solution of the present invention is to provide a multi-stage flue gas desulfurization spray tower, including a primary desulfurization scrubber and a secondary desulfurization spray tower. The outlet of the primary desulfurization scrubber is connected to the inlet of the secondary desulfurization spray tower. The primary desulfurization scrubber includes a primary desulfurization absorption slurry spray layer for spraying the absorption slurry to react with the flue gas. This multi-stage flue gas desulfurization spray tower also includes a reflux pipe connected between the bottom of the primary desulfurization scrubber and the secondary desulfurization spray tower. Thus, the absorption slurry is refluxed to the secondary desulfurization spray tower through this reflux pipe. The technical effect that can be achieved by the multi-stage flue gas desulfurization spray tower of the present invention is: primary desulfurization is carried out in the primary desulfurization scrubber, and secondary desulfurization is carried out in the secondary desulfurization spray tower, thereby greatly reducing the external dimensions of the spray tower, reducing the liquid-gas ratio and the flow rate and head of the circulation pump, while reducing energy consumption and saving costs.

[0004] In the prior art including the above patent, the flue gas enters from above the liquid level of the spray tower after dust removal treatment. However, during the natural upward floating process, since the size of the inlet of the spray tower is often smaller than the size of the spray tower, the flue gas is likely to rise concentrated along the central axis of the desulfurization spray tower, resulting in less gas near the inner wall of the desulfurization spray tower on the outside, and the flue gas on the central axis cannot be fully contacted with the water mist sprayed by the nozzles, affecting the desulfurization efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a flue gas treatment flow equalizing mechanism and a desulfurization spray tower, aiming to solve the above problems.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A flue gas treatment flow equalizing mechanism includes a body and an air inlet provided on the body, and further includes: An ascending diffuser plate, which is movably arranged on the central axis of the body and faces the air inlet; A counter-flushing air equalizing assembly, which includes energy storage cylinders arranged along the diagonal, and the four energy storage cylinders face the same center point, and the center point is located at a predetermined distance above the ascending diffuser plate; Among them, the diagonal energy storage cylinders are in a group, and the two groups of energy storage cylinders intermittently and alternately discharge gas towards the center point.

[0007] Preferably, the ascending diffuser plate includes a plurality of propeller blades arranged in a circumferential array. The propeller blades include a large end and a small end, and the large end faces the center point. The ascending diffuser plate rotates along the central axis.

[0008] Preferably, the energy storage cylinder intermittently jets vortex rings towards the center point.

[0009] Preferably, the energy storage cylinder includes a round-hole cylinder. One end of the round-hole cylinder is provided with a round hole facing the center point, and a pushing plate is arranged inside the round-hole cylinder. The pushing plate is driven to move quickly towards the round hole to eject a vortex ring.

[0010] Preferably, the intermittent gas discharge frequency of the energy storage cylinder increases as the intake speed of the intake port increases.

[0011] Preferably, a gas collecting hood is arranged inside the intake port, and an outer ring channel is formed between the two. The gas collecting hood is conical, and the small end of the gas collecting hood faces the bottom of the ascending diffuser plate.

[0012] Preferably, it further includes an intermittent gas discharge assembly, which includes a bearing cover respectively communicating with the two groups of energy storage cylinders. A rotating air guiding shaft is arranged inside the bearing cover. The rotating air guiding shaft rotates as the ascending diffuser plate rotates to supply gas to a group of energy storage cylinders separately.

[0013] Preferably, a limiting protrusion is arranged on the bearing cover, and a limiting plate is arranged on the rotating air guiding shaft. The limiting plate stops being restricted by the two limiting protrusions as it rotates with the rotating air guiding shaft.

[0014] Preferably, a transmission chain is arranged between the ascending diffuser plate and the rotating air guiding shaft to drive the rotating air guiding shaft to rotate.

[0015] A desulfurization spray tower, which is applied to the above-mentioned flue gas treatment uniform flow mechanism, further includes a demisting plate arranged inside the body. Connecting frames are symmetrically arranged on the demisting plate. The connecting frames are arranged on the energy storage cylinders and transmit vibrations as the energy storage cylinders discharge gas.

[0016] In the above technical solution, a flue gas treatment uniform flow mechanism and a desulfurization spray tower provided by the present invention have the following beneficial effects: The flue gas output from the air inlet is diffused upward through the upward diffuser plate, and the upward diffused flue gas is moved towards the center point. At this time, airflows are emitted from two diagonal energy storage cylinders to disperse the flue gas at the center point, realizing the uniform treatment of the flue gas. The number of energy storage cylinders is two groups, and they are arranged diagonally and obliquely. As the two groups of energy storage cylinders alternate in discharging air, the flue gas at the center point is compensated for dispersion, thereby further realizing the uniform treatment of the flue gas, reducing the accumulation of flue gas, and improving the subsequent vulcanization treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Overall schematic diagram of the counterflush air equalizing component provided by the embodiment of the present invention; Figure 2 Schematic diagram of the housing provided by the embodiment of the present invention; Figure 3 Partial structural schematic diagram of the demisting plate and the counterflush air equalizing component provided by the embodiment of the present invention; Figure 4 For Figure 3 Enlarged schematic diagram at position A in Figure 5 Explosion schematic diagram of the counterflush air equalizing component provided by the embodiment of the present invention; Figure 6 For Figure 5 Enlarged schematic diagram at position B in Figure 7 Schematic sectional view of the housing provided by the embodiment of the present invention; Figure 8 For Figure 7 Enlarged schematic diagram at position C in Figure 9 Overall sectional schematic diagram provided by the embodiment of the present invention; Figure 10 Schematic sectional view of the counterflush air equalizing component and the counterflush air flow direction provided by the embodiment of the present invention.

[0019] Description of the reference numerals: 1. Housing; 10. Air inlet; 11. Stirring base; 12. Demisting plate; 121. Connecting frame; 13. Purification outlet; 14. Slurry atomization part; 141. Partition; 2. Counter-jet air equalizing assembly; 21. Energy storage cylinder; 211. Round hole cylinder; 212. Bottom cover; 213. Pushing plate; 2131. Spring; 22. First air duct; 221. First extension port; 23. Second air duct; 231. Second extension port; 3. Air collecting hood; 31. Flow guiding strip; 311. Connecting bracket; 32. Rising diffuser plate; 321. Fixing plate; 322. Fixing cover; 4. Intermittent air outlet assembly; 41. Vent pipe; 410. Bearing cover; 4101. Limiting projection; 411. Four-way joint; 412. Plug; 42. Rotating air guiding shaft; 421. Air guiding groove; 43. Limiting plate; 44. Transmission chain. Detailed implementation manners

[0020] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure. Embodiment 1

[0021] As Figure 1-10 shown, a flue gas treatment air flow equalizing mechanism includes a main body and an air inlet 10 provided on the main body, and further includes: A rising diffuser plate 32, which is movably arranged on the central axis of the main body and faces the air inlet 10; A counter-jet air equalizing assembly 2, which includes energy storage cylinders 21 arranged along the diagonal, and the four energy storage cylinders 21 face the same center point, and the center point is at a predetermined distance above the rising diffuser plate 32; Among them, the diagonal energy storage cylinders 21 are in a group, and the two groups of energy storage cylinders 21 intermittently and alternately discharge air to the center point.

[0022] Specifically, the air inlet 10 is horizontally arranged on the main body and is 50 mm or more above the liquid level in the main body. The energy storage cylinders 21 are arranged along the diagonal. The center point of the diagonal is at a predetermined distance (the predetermined distance is 34 mm to 78 mm) above the rising diffuser plate 32 (taking Figure 10 as a reference, the above direction is the direction towards the top of the main body). The diagonal on which the energy storage cylinders 21 are located needs to be rectangular, that is, the distance between the two energy storage cylinders 21 on the same side is less than the distance between the two energy storage cylinders 21 in the horizontal direction.

[0023] The energy storage cylinders 21 of the same group release gas at the same time to offset the scattered airflow. The directions of the scattered airflows of the two groups of energy storage cylinders 21 are symmetrically arranged along the central axis, thereby achieving the effect of equalizing the flow.

[0024] In the above technical solution, the flue gas output from the air inlet 10 is diffused upward by the rising diffuser plate 32, and the rising and diffused flue gas is moved toward the center point. At this time, airflow is emitted by two diagonal energy storage cylinders 21 to disperse the flue gas at the center point, thereby achieving uniform treatment of the flue gas. The number of energy storage cylinders 21 is two groups, and they are arranged diagonally. As the two groups of energy storage cylinders 21 alternately discharge air, the flue gas at the center point is dispersed and compensated, thereby further achieving uniform treatment of the flue gas, reducing the accumulation of flue gas at the center, and improving the efficiency of subsequent vulcanization treatment.

[0025] As an embodiment provided by the present invention, the rising diffuser plate 32 includes a plurality of propeller blades arranged in a circular array, the propeller blades include a large end and a small end, the large end faces the center point, and the rising diffuser plate 32 rotates along the center axis.

[0026] Specifically, the propeller blades are Figure 3 As shown, the bottom of the rising diffuser 32 is a small end and the top is a large end, and the air inlet 10 faces the rising diffuser 32, so that when the airflow rushes toward the rising diffuser 32, the airflow is guided upward along the small end by the spiral rising diffuser 32, and at the same time, the rising diffuser 32 is driven by the airflow to rotate, so as to guide the airflow while diffusing it, and to assist the airflow in lifting while diffusing it.

[0027] As an embodiment provided by the present invention, the energy storage cylinder 21 intermittently sprays a vortex ring toward the center point.

[0028] Specifically, the energy storage cylinder 21 releases gas intermittently and rapidly, and sprays vortex rings intermittently toward the center point. When the two vortex rings collide, they collide with each other. Compared with conventional air masses, the vortex rings have greater kinetic energy. When the two vortex rings collide with each other, they can disperse denser smoke, thereby achieving a better flow balancing effect.

[0029] Furthermore, the energy storage cylinder 21 includes a round hole barrel 211, and one end of the round hole barrel 211 is provided with a round hole facing the center point, such as Figure 6As shown in the figure, a pushing plate 213 is arranged inside the round-hole cylinder 211. A spring 2131 is arranged on the pushing plate 213. The device further includes a first air duct 22 and a second air duct 23 which are respectively communicated with two groups of energy storage cylinders 21. Both the first air duct 22 and the second air duct 23 are three-way pipes. Bottom covers 212 are arranged at both ends of the three-way pipe facing the round-hole cylinder 211. The bottom covers 212 discharge air towards the round-hole cylinder 211, and the bottom covers 212 are connected with the spring 2131. When generating a vortex ring, the bottom covers 212 discharge air towards the round-hole cylinder 211, so that the pushing plate 213 is driven to move quickly towards the round hole to eject the vortex ring. Subsequently, the bottom covers 212 cut off the air supply, and the spring 2131 pulls the pushing plate 213 back to its original position for the next use.

[0030] Furthermore, the structure for the energy storage cylinder 21 to eject a vortex ring can also be a round-hole cylinder 211. An elastic membrane is arranged inside the round-hole cylinder 211. The elastic membrane is driven to expand rapidly by the inflation of the bottom cover 212 to eject the vortex ring. Subsequently, the elastic membrane rebounds and returns to its original position for the next use.

[0031] As an embodiment provided by the present invention, the alternating air outlet frequency of the energy storage cylinder 21 increases with the increase of the air intake speed of the air intake port 10.

[0032] Specifically, when the amount of flue gas entering through the air intake port 10 increases, the air flow speed discharged from the air intake port 10 increases, so that the alternating air outlet frequency of the energy storage cylinder 21 also increases accordingly. Thus, the counter-flushing speed is adjusted according to the air intake amount to achieve targeted uniform flow for different air intake amounts.

[0033] As an embodiment provided by the present invention, a gas collecting hood 3 is arranged inside the air intake port 10, and an outer ring channel is formed between the two. The gas collecting hood 3 is conical, and the small end of the gas collecting hood 3 faces the bottom of the upward diffusing plate 32.

[0034] Specifically, the conical gas collecting hood 3 has a compressing effect when collecting flue gas. The flue gas is collected along the large end of the cone, and the small end outputs the flue gas towards the bottom of the upward diffusing plate 32. When the compressed flue gas is output from the small end, it will diffuse and be evenly flowed by the upward diffusing plate 32. The purpose of flue gas compression is to condense small particles in the flue gas and increase the efficiency of sulfidation treatment. Another part of the flue gas directly enters the body through the outer ring channel and is evenly flowed by subsequent vortex counter-flushing.

[0035] Further, the gas collecting hood 3 and the air intake port 10 are connected by a plurality of connecting brackets 311 arranged in a circumferential array. Guide strips 31 are arranged in a circumferential array inside the gas collecting hood 3 to guide the air flow.

[0036] As an embodiment provided by the present invention, it further includes an intermittent air outlet assembly 4, which includes a bearing cover 410 respectively communicated with two groups of energy storage cylinders 21. A rotating air guiding shaft 42 is arranged inside the bearing cover 410. The rotating air guiding shaft 42 rotates with the rotation of the upward diffusing plate 32 to supply air to a group of energy storage cylinders 21 alone.

[0037] Specifically, the main body is a desulfurization spray tower. A compressed air source is arranged on the desulfurization spray tower. A trachea 41 communicating with the compressed air source is fixedly connected to the bearing cover 410. An air guide groove 421 is formed on the rotating air guide shaft 42. The rotating air guide shaft 42 is rotatably connected to the trachea 41. One end of the air guide groove 421 communicates with the trachea 41. A four-way joint 411 is fixedly connected to the bearing cover 410. A first extension port 221 is arranged on the first trachea 22. A second extension port 231 is arranged on the second trachea 23. The second extension port 231 and the first extension port 221 communicate with two horizontal ports of the four-way joint 411. A plug 412 is arranged on the vertical head of the four-way joint 411. When the rotating air guide shaft 42 rotates, the air guide groove 421 discharges air towards the second extension port 231 and the first extension port 221 respectively, so as to separately supply air to a group of energy storage cylinders 21. And the rotation speed of the rotating air guide shaft 42 increases with the rotation of the upward diffuser plate 32.

[0038] Furthermore, a limiting protrusion 4101 is arranged on the bearing cover 410. A limiting plate 43 is arranged on the rotating air guide shaft 42. The limiting plate 43 is rotatably connected to the rotating air guide shaft 42. An elastic plate is arranged between the two. The limiting plate 43 stops rotating under the limitation of the two limiting protrusions 4101 as the rotating air guide shaft 42 rotates. When the rotating air guide shaft 42 rotates, the limiting plate 43 will rotate and fit the limiting protrusion 4101 to stop. And as the rotating force continuously increases, the elastic plate is pulled, so as to rotate the rotating air guide shaft 42 over the limiting protrusion 4101, and supply air to one group of energy storage cylinders 21. As the limiting plate 43 fits another limiting protrusion 4101 and stops, the air supply is fast and short, assisting in the formation of a vortex ring.

[0039] Even further, the upward diffuser plate 32 is rotatably connected to the inner wall of the main body through a fixing plate 321. A transmission chain 44 is arranged between the upward diffuser plate 32 and the rotating air guide shaft 42. A fixed cover 322 is arranged on the inner wall of the main body. A coupling disc for coupling the transmission chain 44 is rotatably connected to the rotating air guide shaft 42. An energy storage member (the energy storage member can be a tension spring, etc.) is arranged between the coupling disc and the rotating air guide shaft 42. The transmission chain 44 rotates with the upward diffuser plate 32 to rotate the rotating air guide shaft 42, driving the rotating air guide shaft 42.

[0040] First, the flue gas enters along the air inlet 10. At this time, the flue gas is collected from the large end of the conical shape and output from the small end, rising towards the bottom of the upward diffuser plate 32. The air flow is guided to rise along the small end by the spiral upward diffuser plate 32. The upward diffuser plate 32 is pushed by the air flow to rotate, so as to diffuse while guiding the air flow. At the same time, the transmission chain 44 rotates with the upward diffuser plate 32 to drive the rotating air guide shaft 42 to rotate, driving the rotating air guide shaft 42 to rotate, and discharging the air guide grooves 421 towards the second extension port 231 and the first extension port 221 respectively, resulting in the bottom cover 212 discharging air towards the circular hole cylinder 211, so that the pushing plate 213 is driven to move quickly towards the circular hole to eject the vortex ring. The two vortex rings collide towards the center point, and the flue gas rising and diffusing along the upward diffuser plate 32 is scattered to achieve uniform flow. As the two groups of energy storage cylinders 21 discharge air alternately, the flue gas at the center point where it is scattered is compensated, thereby further realizing the uniform treatment of the flue gas, reducing the accumulation of flue gas at the center, and improving the subsequent vulcanization treatment efficiency. Embodiment 2

[0041] As Figure 1-10 shown, a desulfurization spray tower further includes a demisting plate 12 arranged inside the body. Connecting frames 121 are symmetrically arranged on the demisting plate 12. The connecting frames 121 are arranged on the energy storage cylinder 21 and transmit vibration as the energy storage cylinder 21 discharges air.

[0042] Specifically, the demisting plate 12 is fixed by the energy storage cylinder 21. When the energy storage cylinder 21 sprays out the eddy current, it will vibrate, thereby transmitting the vibration to the demisting plate 12 to assist the condensation of small water droplets on the demisting plate 12 to converge and timely recover the slurry on the demisting plate 12.

[0043] Furthermore, the body includes a housing 1. A purification outlet 13, an air inlet 10 and a stirring base 11 are arranged on the housing 1. The stirring base 11 stirs the slurry through a compressed air source. A slurry atomization part 14 and a partition 141 are arranged inside the housing 1 to carry out desulfurization treatment on the flue gas.

[0044] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A flue gas treatment flow equalization mechanism, comprising a body and an air inlet (10) arranged on the body, characterized in that: Also includes: An ascending diffuser plate (32) movably disposed on the central axis of the body and facing the air inlet (10); A counter-pressure equalizing gas assembly (2), comprising energy storage cylinders (21) arranged along a diagonal line, wherein four energy storage cylinders (21) face the same center point, and the center point is located a predetermined distance above the ascending diffuser plate (32); The diagonally disposed energy storage cylinders (21) form a group, and the two groups of energy storage cylinders (21) discharge gas toward the central point intermittently and alternately.

2. A flue gas treatment flow equalization mechanism according to claim 1, characterized in that: The ascending diffuser plate (32) comprises a plurality of propeller blades arranged in a circumferential array, the propeller blades comprising a large end and a small end, the large end facing the central point, and the ascending diffuser plate (32) rotates along the central axis.

3. A flue gas treatment flow equalization mechanism according to claim 1, characterized in that: The energy storage cylinder (21) intermittently sprays a vortex ring toward the central point.

4. A flue gas treatment flow equalization mechanism according to claim 3, characterized in that: The energy storage cylinder (21) comprises a round hole barrel (211), one end of the round hole barrel (211) is provided with a round hole facing the center point, a push plate (213) is provided inside the round hole barrel (211), and the push plate (213) is driven to move quickly toward the round hole to push out the vortex ring.

5. A flue gas treatment flow equalization mechanism according to claim 1, characterized in that: The frequency of alternating gas discharge from the energy storage cylinder (21) increases as the air intake speed of the air intake port (10) increases.

6. A flue gas treatment flow equalization mechanism according to claim 1, characterized in that: An air collecting hood (3) is arranged inside the air inlet (10), and an outer ring channel is formed therebetween. The air collecting hood (3) is conical, and the small end of the air collecting hood (3) faces the bottom of the ascending diffuser plate (32).

7. A flue gas treatment flow equalization mechanism according to claim 5, characterized in that: It also includes an intermittent gas outlet assembly (4), which includes a bearing cover (410) respectively connected to two groups of the energy storage cylinders (21), and a rotating gas guide shaft (42) is arranged in the bearing cover (410). The rotating gas guide shaft (42) rotates with the rotation of the rising diffuser plate (32) to supply gas to one group of the energy storage cylinders (21) separately.

8. A flue gas treatment flow equalization mechanism according to claim 7, characterized in that: The bearing cover (410) is provided with a limiting protrusion (4101), and the rotating air guide shaft (42) is provided with a limiting plate (43), and the limiting plate (43) rotates with the rotating air guide shaft (42) and is limited and stopped by the two limiting protrusions (4101).

9. A flue gas treatment flow equalization mechanism according to claim 7, characterized in that: The ascending diffuser plate (32) and the rotating air guide shaft (42) are provided with a transmission chain (44) to drive the rotating air guide shaft (42) to rotate.

10. A desulfurization spray tower, characterized in that: The flue gas treatment flow equalization mechanism applied to claims 1 to 9 comprises an energy storage cylinder (21), and also comprises a demister plate (12) arranged in a main body, a connecting frame (121) being symmetrically arranged on the demister plate (12), and the connecting frame (121) being arranged on the energy storage cylinder (21) and transmitting vibration along with the exhaust of the energy storage cylinder (21).

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