A dry desulfurization device
By using a combination of heating rings and high-intensity pulsed airflow in the dry desulfurization unit, the problem of caking caused by deliquescence during the dry desulfurization process was solved, achieving anti-clogging and efficient cleaning of the discharge pipe.
Patent Information
- Application Number
- CN202522583034.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-05
AI Technical Summary
During dry desulfurization, dry byproducts are easily affected by ambient humidity and moisture entrained in flue gas. Under low-temperature conditions, the materials easily absorb moisture and deliquesce, forming a hard, caking layer that can lead to pipe blockage.
Using a preheating component and an impact component, the discharge pipe is heated by a heating ring to break up the slab structure. At the same time, a high-intensity pulsed airflow is used to impact the ash accumulation area, breaking up the clumps and bridging, and reducing the adhesion between particles.
It effectively prevents ash accumulation and blockage on the inner wall of the discharge pipe, restores material flowability, reduces pipe damage, improves unblocking efficiency, and extends equipment service life.
Smart Images
Figure CN224937974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of desulfurization technology, specifically a dry desulfurization device. Background Technology
[0002] Dry desulfurization refers to a flue gas treatment technology that uses solid desulfurizing agents as the core reaction medium and achieves pollutant removal by allowing the sulfur dioxide in the flue gas to react chemically or be physically adsorbed with the desulfurizing agent through full contact between the gas and solid phases. When using desulfurization towers for dry desulfurization, the dry by-products are easily affected by ambient humidity and moisture entrained in flue gas during transportation. Especially under low-temperature conditions, the materials easily absorb moisture and deliquesce, which in turn forms a hard, hardened layer on the inner wall of the pipeline. Utility Model Content
[0003] The purpose of this invention is to provide a dry desulfurization device to solve the problem in the background art where, when using a desulfurization tower for dry desulfurization, the dry by-products are easily affected by ambient humidity and moisture entrained in the flue gas during transportation, especially under low-temperature conditions, the material easily absorbs moisture and deliquesces, thus forming a hard caking layer on the inner wall of the pipeline.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dry desulfurization device, including a desulfurization tower and a discharge pipe, wherein a preheating component is provided on the outside of the discharge pipe and an impact component is provided on the outside of the discharge pipe; The preheating component includes a reciprocating lead screw, and the reciprocating lead screw is connected to a threaded block through a ball nut pair. A movable ring is fixedly connected to one side of the outer surface of the threaded block, and multiple springs are fixedly connected to one side of the outer surface of the movable ring. A heating ring is fixedly connected to one end of the outer surface of the multiple springs, and a heating coil is provided inside the heating ring. The impact assembly includes an air cylinder, and a sliding rod is slidably embedded inside the air cylinder. The discharge pipe has multiple air rings inside, and each of the multiple air rings has a directional injection nozzle inside. The air cylinder has an air delivery pipe inside, and a pressure valve is installed inside the air delivery pipe.
[0005] Preferably, two sets of fixing plates are fixedly connected to the outer surface of the discharge pipe, and the reciprocating screw is rotatably embedded inside the fixing plates.
[0006] Preferably, a limiting rod is fixedly connected to one side of the outer surface of the two sets of fixing plates, and the threaded block is slidably sleeved on the outer surface of the limiting rod.
[0007] Preferably, a drive motor is fixedly connected to one side of the outer surface of one of the two sets of fixing plates, and the output shaft of the drive motor is fixedly connected to the reciprocating lead screw.
[0008] Preferably, the air cylinder has an air inlet inside, and the air inlet has a one-way valve inside.
[0009] Preferably, a piston is fixedly connected to one side of the outer surface of the slide rod, and the piston is slidably embedded inside the air cylinder.
[0010] Preferably, a follower plate is fixedly connected to one side of the outer surface of the slide bar, and one side of the outer surface of the follower plate is fixedly connected to the moving ring.
[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: First, this utility model uses a desulfurization tower for dry desulfurization. After desulfurization, the material is discharged through the discharge pipe into the next process. At this time, the drive motor and heating coil are turned on. The drive motor drives the reciprocating screw to rotate, which in turn drives the threaded block to move. The threaded block drives the moving ring to move, and the moving ring, connected by a spring, drives the heating ring to move. The movement of the heating ring outside the discharge pipe heats the discharge pipe through the heating coil. Through the above technical solution, the heating dissolves the moisture-absorbing caking that has formed inside the discharge pipe, increases the temperature of the inner wall of the discharge pipe, reduces the condensation of moisture in the air on the pipe wall, reduces the probability of dry ash adsorption and adhesion, and delays the formation cycle of ash accumulation and blockage. The movement of the heating ring along the discharge pipe heats the discharge pipe, preventing ash residue caused by leakage in some areas of the discharge pipe. The heating ring increases the temperature of the inner wall of the discharge pipe, allowing the moisture-absorbing material inside the discharge pipe to be fully dehydrated, destroying the bonding structure of the caking layer, and restoring the material's loose flowability.
[0012] Secondly, when the moving ring moves, the follower plate drives the slide rod to move inside the air cylinder, which in turn drives the piston to move inside the air cylinder, creating a negative pressure inside. Gas is then drawn from the outside through the air inlet and one-way valve. After entering the air cylinder, the gas is stored and accumulated. When the gas pressure inside the air cylinder reaches the threshold of the pressure valve, the pressure valve opens, sending all the gas inside the air cylinder through the air delivery pipe to multiple air rings. Subsequently, the gas is ejected through multiple directional nozzles with a certain angle of inclination. Facing the inner wall of the discharge pipe, the pressure valve, after setting the pressure, exhausts air in one go, forming a high-intensity pulsed airflow. This airflow is directly applied to the inner wall of the discharge pipe through a directional nozzle with an inclined angle, impacting the area where ash accumulates, breaking up the clumps and bridging of dry ash. The heating ring then heats the ash inside the discharge pipe, causing it to dehydrate and loosen. This reduces the adhesion between particles and the ash's adhesion to the pipe wall. At this point, the airflow does not need to be too strong to easily peel off the ash, improving the unblocking efficiency and reducing excessive impact damage to the pipeline. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is one of the three-dimensional structural schematic diagrams of this utility model; Figure 3 This is a second three-dimensional structural schematic diagram of the present utility model; Figure 4 This is a third three-dimensional structural schematic diagram of the present utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the gas ring of this utility model.
[0014] The components include: 1. Desulfurization tower; 101. Discharge pipe; 2. Reciprocating screw; 201. Threaded block; 202. Moving ring; 203. Spring; 204. Heating ring; 205. Heating coil; 206. Limiting rod; 207. Fixing plate; 3. Air cylinder; 301. Air inlet; 302. Check valve; 303. Air supply pipe; 304. Pressure valve; 4. Sliding rod; 401. Piston; 402. Follower plate; 5. Air ring; 501. Directional injection nozzle; 6. Drive motor. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0016] Please see Figures 1-5 A dry desulfurization device includes a desulfurization tower 1 and a discharge pipe 101. A preheating component is installed on the outside of the discharge pipe 101, and an impact component is installed on the outside of the discharge pipe 101. The preheating assembly includes a reciprocating lead screw 2, and the reciprocating lead screw 2 is connected to a threaded block 201 via a ball nut pair. A movable ring 202 is fixedly connected to one side of the outer surface of the threaded block 201, and a plurality of springs 203 are fixedly connected to one side of the outer surface of the movable ring 202. A heating ring 204 is fixedly connected to one end of the outer surface of the plurality of springs 203, and a heating coil 205 is provided inside the heating ring 204. The impact assembly includes an air cylinder 3, and a slide rod 4 is slidably embedded inside the air cylinder 3. Multiple air rings 5 are provided inside the discharge pipe 101, and each of the multiple air rings 5 is provided with a directional injection nozzle 501. An air delivery pipe 303 is provided inside the air cylinder 3, and a pressure valve 304 is provided inside the air delivery pipe 303.
[0017] Through the above technical solution, dry desulfurization is carried out through desulfurization tower 1. After desulfurization, the material is discharged through discharge pipe 101 to enter the next process. At this time, drive motor 6 and heating coil 205 are turned on. Drive motor 6 drives reciprocating screw 2 to rotate. The rotation of reciprocating screw 2 drives threaded block 201 to move. Threaded block 201 drives moving ring 202 to move. Moving ring 202 is connected by spring 203, thereby driving heating ring 204 to move. The movement of heating ring 204 outside discharge pipe 101, through heating coil 205, heats discharge pipe 101. Heating, through the above technical solution, dissolves the moisture-absorbing caking that has formed inside the discharge pipe 101 by heating, increases the temperature of the inner wall of the discharge pipe 101, reduces the condensation of moisture in the air on the pipe wall, reduces the probability of dry ash adsorption and adhesion, and delays the formation cycle of ash accumulation and blockage. The heating ring 204 moves along the discharge pipe 101 to heat the discharge pipe 101, avoiding ash residue caused by leakage in local areas of the discharge pipe 101. The heating ring 204 increases the temperature of the inner wall of the discharge pipe 101, so that the moisture-absorbing material inside the discharge pipe 101 is fully dehydrated, destroys the bonding structure of the caking layer, and restores the loose flowability of the material.
[0018] Through the above technical solution, when the moving ring 202 moves, the follower plate 402 drives the slide rod 4 to move inside the air cylinder 3, and the slide rod 4 drives the piston 401 to move inside the air cylinder 3, creating a negative pressure inside the air cylinder 3. Gas is drawn from the outside through the air inlet 301 and the one-way valve 302. After the gas enters the air cylinder 3, it is stored and accumulated. When the gas pressure inside the air cylinder 3 reaches the threshold of the pressure valve 304, the pressure valve 304 is opened, and all the gas inside the air cylinder 3 is sent to multiple air rings 5 through the air delivery pipe 303. Then, it is sprayed through multiple directional nozzles 501 with a certain tilt angle. The directional spray nozzle 501 is directed towards the inner wall of the discharge pipe 101. Through the above technical solution, the pressure valve 304 exhausts air at a preset pressure in one go, forming a high-intensity pulse airflow. The directional spray nozzle 501 with an inclined angle directly acts on the inner wall of the discharge pipe 101, impacting the area where the ash is attached, breaking up the clumps and bridging of dry ash. The heating ring 204 heats the ash inside the discharge pipe 101, causing it to dehydrate and loosen. This reduces the adhesion between particles and the adhesion of the ash to the wall of the discharge pipe 101. At this time, the airflow does not need to be too strong to easily peel off the ash, which not only improves the unblocking efficiency but also reduces the impact damage to the pipeline.
[0019] Specifically, two sets of fixing plates 207 are fixedly connected to the outer surface of the discharge pipe 101, and the reciprocating screw 2 is rotatably embedded inside the fixing plate 207.
[0020] The above technical solution supports the reciprocating lead screw 2 through the fixing plate 207.
[0021] Specifically, a limiting rod 206 is fixedly connected to one side of the outer surface of the two sets of fixing plates 207, and a threaded block 201 is slidably sleeved on the outer surface of the limiting rod 206.
[0022] The above technical solution limits the threaded block 201 by means of the limiting rod 206.
[0023] Specifically, a drive motor 6 is fixedly connected to one side of the outer surface of one of the two sets of fixing plates 207, and the output shaft of the drive motor 6 is fixedly connected to the reciprocating lead screw 2.
[0024] The above technical solution enables the reciprocating lead screw 2 to rotate via the drive motor 6.
[0025] Specifically, the air cylinder 3 has an air inlet 301 inside, and the air inlet 301 has a one-way valve 302 inside.
[0026] The above technical solution allows air to enter through the air inlet 301, and prevents backflow of gas through the one-way valve 302.
[0027] Specifically, a piston 401 is fixedly connected to one side of the outer surface of the slide rod 4, and the piston 401 is slidably embedded inside the air cylinder 3.
[0028] Through the above technical solution, the piston 401 is driven by the slide rod 4 to move inside the air cylinder 3.
[0029] Specifically, a follower plate 402 is fixedly connected to one side of the outer surface of the slide bar 4, and one side of the outer surface of the follower plate 402 is fixedly connected to the moving ring 202.
[0030] Through the above technical solution, the sliding rod 4 is driven by the follower plate 402 to move inside the air cylinder 3.
[0031] In operation, dry desulfurization is performed through desulfurization tower 1. After desulfurization, the material is discharged through discharge pipe 101 to enter the next process. At this time, drive motor 6 and heating coil 205 are turned on. Drive motor 6 drives reciprocating screw 2 to rotate. The rotation of reciprocating screw 2 drives threaded block 201 to move. Threaded block 201 drives moving ring 202 to move. Moving ring 202 is connected by spring 203, which drives heating ring 204 to move. The movement of heating ring 204 outside discharge pipe 101 heats discharge pipe 101 through heating coil 205. Through the above technical solution, the moisture-absorbing caking formed in the discharge pipe 101 is dissolved by heating, the temperature of the inner wall of the discharge pipe 101 is increased, the condensation of moisture in the air on the pipe wall is reduced, the probability of dry ash adsorption and adhesion is reduced, and the formation cycle of ash blockage is delayed. The heating ring 204 moves along the discharge pipe 101 to heat the discharge pipe 101, avoiding ash residue caused by leakage in some areas of the discharge pipe 101. The heating ring 204 increases the temperature of the inner wall of the discharge pipe 101, so that the moisture-absorbing material in the discharge pipe 101 is fully dehydrated, the bonding structure of the caking layer is destroyed, and the loose flowability of the material is restored. When the moving ring 202 moves, the follower plate 402 drives the slide rod 4 to move inside the air cylinder 3. The slide rod 4 drives the piston 401 to move inside the air cylinder 3, creating a negative pressure inside the air cylinder 3. Gas is drawn from the outside through the air inlet 301 and the one-way valve 302. After the gas enters the air cylinder 3, it is stored and accumulated. When the gas pressure inside the air cylinder 3 reaches the threshold of the pressure valve 304, the pressure valve 304 opens, and all the gas inside the air cylinder 3 is sent to multiple air rings 5 through the air delivery pipe 303. Then, it is sprayed out through multiple directional spray nozzles 501 with a certain tilt angle. The nozzle 501 faces the inner wall of the discharge pipe 101. Through the above technical solution, the pressure valve 304 sets a preset pressure and then exhausts air at once to form a high-intensity pulse airflow. This airflow is directly applied to the inner wall of the discharge pipe 101 through the directional nozzle 501 with an inclined angle, impacting the area where ash is attached, breaking up the clumps and bridging of dry ash. The heating ring 204 heats the ash inside the discharge pipe 101 to dehydrate and loosen it, reducing the adhesion between particles and the adhesion of ash to the pipe wall of the discharge pipe 101. At this time, the airflow does not need to be too strong to easily peel off the ash, which not only improves the unblocking efficiency but also reduces the impact damage to the pipeline.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dry desulfurization device, comprising a desulfurization tower (1) and a discharge pipe (101), characterized in that: A preheating component is provided on the outside of the discharge pipe (101), and an impact component is provided on the outside of the discharge pipe (101). The preheating assembly includes a reciprocating lead screw (2), and the reciprocating lead screw (2) is connected to a threaded block (201) through a ball nut pair. A movable ring (202) is fixedly connected to one side of the outer surface of the threaded block (201), and a plurality of springs (203) are fixedly connected to one side of the outer surface of the movable ring (202). A heating ring (204) is fixedly connected to one end of the outer surface of the plurality of springs (203), and a heating coil (205) is provided inside the heating ring (204). The impact assembly includes an air cylinder (3), and a slide rod (4) is slidably embedded inside the air cylinder (3). Multiple air rings (5) are provided inside the discharge pipe (101), and each of the multiple air rings (5) is provided with a directional spray nozzle (501). An air delivery pipe (303) is provided inside the air cylinder (3), and a pressure valve (304) is provided inside the air delivery pipe (303).
2. The dry desulfurization device according to claim 1, characterized in that: Two sets of fixing plates (207) are fixedly connected to the outer surface of the discharge pipe (101), and the reciprocating screw (2) is rotatably embedded inside the fixing plate (207).
3. A dry desulfurization device according to claim 2, characterized in that: A limiting rod (206) is fixedly connected to one side of the outer surface of the two sets of fixing plates (207), and the threaded block (201) is slidably sleeved on the outer surface of the limiting rod (206).
4. A dry desulfurization device according to claim 2, characterized in that: One of the two sets of fixing plates (207) has a drive motor (6) fixedly connected to one side of its outer surface, and the output shaft of the drive motor (6) is fixedly connected to the reciprocating lead screw (2).
5. A dry desulfurization device according to claim 1, characterized in that: The air cylinder (3) is provided with an air inlet (301) inside, and a one-way valve (302) is provided inside the air inlet (301).
6. A dry desulfurization device according to claim 1, characterized in that: A piston (401) is fixedly connected to one side of the outer surface of the slide rod (4), and the piston (401) is slidably embedded inside the air cylinder (3).
7. A dry desulfurization device according to claim 1, characterized in that: A follower plate (402) is fixedly connected to one side of the outer surface of the slide bar (4), and one side of the outer surface of the follower plate (402) is fixedly connected to the moving ring (202).