Dry-type desulfurization device

Abstract

The utility model relates to the technical field of desulfurization devices, and provides a dry type desulfurization device which comprises a desulfurization tower and a hopper, a nozzle is arranged in the desulfurization tower, the nozzle is communicated with the hopper, a crushing mechanism is arranged between the hopper and the nozzle, the crushing mechanism comprises a roller, a driving motor and a plurality of crushing balls, and the roller is linked with an output shaft of the driving motor. The crushing balls are located in the roller, a first conveying channel is arranged between the hopper and the roller, a second conveying channel is arranged between the roller and the nozzle, and a plurality of screening structures are arranged at the end, close to the second conveying channel, of the roller. According to the technical scheme, the problem that a desulfurizing agent is not uniformly sprayed in the related technology is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization devices, and more specifically, to a dry desulfurization device. Background Art

[0002] In the production processes of industries such as thermal power generation and metallurgical production, a large amount of industrial flue gas will be generated. To prevent the industrial flue gas from damaging the atmospheric environment after being discharged, desulfurization treatment will be carried out on it before discharge.

[0003] Currently, mainly dry desulfurization methods such as applying powdered or granular desulfurizing agents to remove sulfides are used to desulfurize industrial flue gas; however, when spraying the desulfurizing agent into the flue gas, due to the uneven particle size of the desulfurizing agent particles, the desulfurizing agent particles are prone to jamming and blocking in the hopper and nozzle, resulting in uneven spraying of the desulfurizing agent or intermittent interruption of spraying, causing incomplete desulfurization of industrial flue gas. Summary of the Utility Model

[0004] The utility model provides a dry desulfurization device, which solves the problem of uneven spraying of desulfurizing agent in the related art.

[0005] The technical solution of the utility model is as follows:

[0006] A dry desulfurization device includes a desulfurization tower and a hopper. A nozzle is provided inside the desulfurization tower, and the nozzle is communicated with the hopper. A crushing mechanism is provided between the hopper and the nozzle. The crushing mechanism includes a drum, a driving motor, and several crushing balls. The drum is linked with the output shaft of the driving motor, and each crushing ball is located in the drum. A first conveying channel is provided between the hopper and the drum, and a second conveying channel is provided between the drum and the nozzle. Several screening structures are provided at one end of the drum close to the second conveying channel.

[0007] Furthermore, a transfer body is provided between the second conveying channel and the drum. The drum is rotatably connected with the transfer body. A guiding channel for guiding the feeding is provided inside the transfer body. The guiding channel communicates the inside of the drum with the second conveying channel, and each screening structure is located between the drum and the guiding channel.

[0008] Furthermore, the guiding channel includes a first guiding part and a second guiding part. The first guiding part is an arc-shaped structure and is located between the second guiding part and the drum. The second guiding part is an inverted cone-shaped structure.

[0009] Furthermore, each screening structure is evenly distributed around the drum in a circumferential direction, and each screening structure includes several screening channels, and the screening channels are arranged in sequence along a linear direction.

[0010] Further, the second conveying channel includes a connecting pipe and a conveying pipe. The connecting pipe is located between the two ends of the conveying pipe, and the two ends of the connecting pipe are respectively communicated with the transfer body and the conveying pipe. The conveying pipe is communicated with the nozzle, and a conveying fan is provided at one end away from the nozzle. The air outlet of the conveying fan is communicated with the conveying pipe.

[0011] Further, a first rotary valve is provided between the hopper and the first conveying channel, and the connecting pipe includes a second rotary valve.

[0012] Further, a screw conveyor is provided inside the first conveying channel, a conveying motor is provided outside the first conveying channel, and the screw conveyor is linked with the output shaft of the conveying motor.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model is provided with a crushing mechanism between the hopper and the nozzle, so that some desulfurizer particles with larger volumes are crushed before entering the nozzle, so that the desulfurizer particles can be kept as small as possible or in a powdered state, preventing the desulfurizer from getting stuck or blocked in the hopper or nozzle, resulting in intermittent interruption or uneven spraying of the desulfurizer.

[0015] 2. The crushing mechanism in the present utility model mainly includes a drum, a driving motor, and a number of crushing balls. The two ends of the drum are respectively communicated with the hopper and the nozzle, and the drum is linked with the output shaft of the driving motor. Each crushing ball is located inside the drum. That is, when the desulfurizer particles enter the inside of the drum, by starting the driving motor, the drum rotates, thereby driving each crushing ball to impact the desulfurizer particles or the desulfurizer particles impact each other, producing a crushing effect on the desulfurizer particles, thereby reducing the volume of the desulfurizer particles.

[0016] 3. At the same time, a screening structure is provided at one end of the drum close to the nozzle (i.e., the outlet of the drum), so that the desulfurizer particles can only go to the nozzle from the drum when they are crushed to a certain extent, avoiding large particles from entering the nozzle and improving the practicability of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0018] Figure 1 is a schematic structural diagram of this embodiment;

[0019] Figure 2 is a schematic diagram of the internal structure of this embodiment;

[0020] Figure 3 is a schematic structural diagram of the crushing mechanism in this embodiment;

[0021] Figure 4 is Figure 3Cross-sectional view.

[0022] In the figure:

[0023] 1. Desulfurization tower; 2. Hopper; 3. Nozzle; 4. Crushing mechanism; 41. Roller; 42. Crushing balls; 43. Driving motor; 5. First conveying channel; 51. Screw conveyor; 52. Conveying motor; 6. Second conveying channel; 61. Connecting pipe; 611. Second rotary valve; 62. Conveying pipe; 7. Screening structure; 71. Screening channel; 8. Transfer body; 81. Guiding channel; 811. First guiding part; 812. Second guiding part; 9. Conveying fan; 10. First rotary valve. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0025] As Figures 1 to 2 shown, this embodiment proposes a dry desulfurization device, which mainly includes a desulfurization tower 1 and a hopper 2. A nozzle 3 is provided inside the desulfurization tower 1, and the nozzle 3 is communicated with the hopper 2. That is, by adding desulfurizing agent into the hopper 2, it is ensured that the nozzle 3 can continuously spray desulfurizing agents such as activated carbon or alumina. When the industrial flue gas in the desulfurization tower 1 contacts the desulfurizing agent, sulfur dioxide in the industrial flue gas will be adsorbed and fixed on the surface of these desulfurizing agents, realizing the desulfurization work of the industrial flue gas.

[0026] To prevent these solid desulfurization agents from being too large in volume, resulting in blockage of the hopper 2 or nozzle 3, or jamming during transportation inside the hopper 2 or nozzle 3, a crushing mechanism 4 is provided between the hopper 2 and the nozzle 3. The crushing mechanism 4 mainly includes a drum 41, a driving motor 43, and several crushing balls 42. A first conveying channel 5 is provided between the hopper 2 and the drum 41, and a second conveying channel 6 is provided between the drum 41 and the nozzle 3. That is, the desulfurization agent in the hopper 2 will pass through the drum 41 during the process of entering the nozzle 3. The drum 41 is linked to the output shaft of the driving motor 43, enabling the drum 41 to rotate. At the same time, since each crushing ball 42 is located inside the drum 41, when the drum 41 rotates, it will drive each crushing ball 42 to move together, so that each crushing ball 42 impacts the desulfurization agent particles inside the drum 41, or the desulfurization agent particles impact each other, achieving the effect of crushing the desulfurization agent particles. That is, in this embodiment, by reducing the volume of the desulfurization agent particles, it is possible to prevent the desulfurization agent particles from blocking the hopper 2 or nozzle 3, thereby avoiding intermittent interruption or uneven spraying during the spraying of the desulfurization agent particles by the nozzle 3, and ensuring that the industrial flue gas can be thoroughly desulfurized.

[0027] Moreover, considering that there are conveying channels at both ends of the drum 41, it is difficult for the output shaft of the driving motor 43 to be directly connected to the drum 41. Therefore, it is preferably to sleeved a driven gear on the circumferential surface of the drum 41 and fix a driving gear on the output shaft of the driving motor 43. The driving gear meshes with the driven gear to ensure that the rotation of the output shaft of the driving motor 43 can drive the drum 41 to rotate normally. And the linkage between the output shaft of the driving motor 43 and the drum 41 is carried out by means of gear meshing, which can effectively reduce the loss of the driving force of the driving motor 43 during the transmission process, thereby avoiding unnecessary energy waste.

[0028] At the same time, to prevent large-particle desulfurization agents from directly entering the second conveying channel 6 without being crushed, several screening structures 7 are provided at one end of the drum 41 close to the second conveying channel 6. Through each screening structure 7, the volume of the desulfurization agent particles entering the second conveying channel 6 is strictly controlled, achieving the effect of isolating large-volume particles, and further preventing large-particle desulfurization agents from entering the second conveying channel 6, ensuring the practicability of this embodiment.

[0029] Such as Figures 3 to 4As shown, each screening structure 7 in this embodiment is provided on the end face of the drum 41, that is, each screening structure 7 and the drum 41 are integrally formed, enabling each screening structure 7 to have a linkage relationship with the drum 41 and rotate together, thereby ensuring the stability of the overall structure of this embodiment; each screening structure 7 is evenly distributed circumferentially around the drum 41 to prevent the desulfurizer particles inside the drum 41 from not being able to contact the screening structure 7 due to the rotation of the drum 41, so that the function of screening particles in this embodiment is not affected by the rotation angle of the drum 41, ensuring the conveying efficiency of the particles; and each screening structure 7 includes a number of screening channels 71, that is, the screening structure 7 limits the volume of the particles through the size of the screening channels 71. This physical limitation method is quite reliable, and the screening channels 71 are arranged in sequence along the linear direction. Since there are many particles inside the drum 41, setting multiple screening channels 71 is beneficial to improving the screening efficiency of the screening structure 7.

[0030] As Figures 1 to 2 shown, the second conveying channel 6 in this embodiment includes a connecting pipe 61 and a conveying pipe 62. The two ends of the connecting pipe 61 are respectively communicated with the transfer body 8 and the conveying pipe 62. The conveying pipe 62 is communicated with the nozzle 3, and a conveying fan 9 is provided at the end far from the nozzle 3. The air outlet of the conveying fan 9 is communicated with the conveying pipe 62. That is, in this embodiment, the second conveying channel 6 conveys the particles by pneumatic conveying, making the transportation of the material more efficient and fast. And when the airflow carrying the material enters the desulfurization tower 1 through the nozzle 3, affected by the structure of the nozzle 3, the airflow is equivalent to coming from a wider place to a narrower place, that is, the airflow comes from the high-pressure area to the low-pressure area, so that the flow velocity of the airflow is increased, making the force of spraying the particles greater and stronger, ensuring that the industrial flue gas inside the desulfurization tower 1 can contact enough desulfurizer particles and ensuring the desulfurization effect of this embodiment.

[0031] The conveying fan 9 in this embodiment is preferably a centrifugal fan or other fans with high efficiency and large air volume to ensure the stability of feeding in the second conveying channel 6.

[0032] Moreover, the connecting pipe 61 is located between the two ends of the conveying pipe 62, and there is a certain arc structure at the junction of the connecting pipe 61 and the conveying pipe 62 to prevent the airflow from generating vortices and disturbances at the junction of the two, reducing the shunt phenomenon, making the flow direction of the airflow more stable, and improving the operating stability of this embodiment.

[0033] A first rotary valve 10 is provided between the hopper 2 and the first conveying channel 5. By means of the rotation operation of the first rotary valve 10, the opening of the valve is adjusted to control the amount of particles in the hopper 2 entering the first conveying channel 5, so as to avoid excessive entry of disposable particles and cause blockage of the first conveying channel 5; the connecting pipe 61 includes a second rotary valve 611, and the second rotary valve 611 can also play the role of air flow. At the same time, when the valve is closed, it can also effectively prevent the phenomenon of particle diversion caused by the internal airflow of the conveying pipe 62 entering the connecting pipe 61.

[0034] An auger 51 is provided inside the first conveying channel 5, and a conveying motor 52 is provided outside the first conveying channel 5. The auger 51 is linked with the output shaft of the conveying motor 52, that is, the first conveying channel 5 conveys materials through the structure of a screw conveyor. The spiral blades on the auger 51 can isolate and divert the particles entering the first conveying channel 5 to prevent the particles from clogging the first conveying channel 5, thereby improving the conveying efficiency of the particles.

[0035] A rotating body 8 is provided between the second conveying channel 6 and the roller 41, and the roller 41 is rotatably connected to the rotating body 8, so that the roller 41 has a support point on the rotating body 8, and can rotate more smoothly under the driving force of the driving motor 43, thereby improving the stability of the present embodiment; at the same time, in order to prevent the first conveying channel 5 from interfering with the rotation of the roller 41, the roller 41 is rotatably connected to the first conveying channel 5, and the first conveying channel 5 can also serve as a support point of the roller 41, thereby further improving the stability of the present embodiment; a guide channel 81 for guiding feeding is provided inside the rotating body 8, and the guide channel 81 connects the inside of the roller 41 with the second conveying channel 6, and each screening structure 7 is located between the roller 41 and the guide channel 81, that is, the guide channel 81 is used to prevent the crushed desulfurizer particles from staying inside the rotating body 8, thereby ensuring the transportation effect of the present embodiment on the desulfurizer particles.

[0036] The guide channel 81 includes a first guide part 811 and a second guide part 812. The first guide part 811 is an arc-shaped structure, and the first guide part 811 is located between the second guide part 812 and the roller 41, so that the particles entering the first guide part 811 can slide down along the surface of the arc-shaped structure into the second guide part 812. The second guide part 812 is an inverted conical structure. With the help of the conical structure from wide to narrow structure, the particles are gathered and accurately delivered to the second conveying channel 6, thereby ensuring the transfer efficiency of the particles in the transfer body 8.

[0037] In this embodiment, the driving motor 43 and the conveying motor 52 are preferably motors with high stability such as servo motors, so as to ensure that this embodiment can maintain a stable motion state.

[0038] Meanwhile, this embodiment only shows the connection relationships between various components. Specifically, for how to fix the crushing mechanism 4 and each conveying channel, it is preferably to add support rods at the bottom of each component with the ground as the support fixing surface according to the actual situation, or the components can be directly fixed on the wall. How to specifically achieve the support and fixation will not be elaborated in this embodiment.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dry desulfurization device, comprising a desulfurization tower (1) and a hopper (2), wherein a nozzle (3) is provided inside the desulfurization tower (1), and the nozzle (3) is connected to the hopper (2), characterized in that: A crushing mechanism (4) is provided between the hopper (2) and the nozzle (3), the crushing mechanism (4) comprising a roller (41), a driving motor (43), and a plurality of crushing balls (42), the roller (41) being linked to the output shaft of the driving motor (43), each of the crushing balls (42) being located in the roller (41), a first conveying channel (5) being provided between the hopper (2) and the roller (41), a second conveying channel (6) being provided between the roller (41) and the nozzle (3), and a plurality of screening structures (7) being provided on one end of the roller (41) close to the second conveying channel (6).

2. The dry desulfurization device according to claim 1, characterized in that: A rotating body (8) is provided between the second conveying channel (6) and the roller (41); the roller (41) and the rotating body (8) are rotatably connected; a guide channel (81) for guiding feeding is provided inside the rotating body (8); the guide channel (81) connects the inside of the roller (41) and the second conveying channel (6); and each of the screening structures (7) is located between the roller (41) and the guide channel (81).

3. The dry desulfurization device according to claim 2, characterized in that: The guide channel (81) comprises a first guide portion (811) and a second guide portion (812); the first guide portion (811) is an arc-shaped structure, and the first guide portion (811) is located between the second guide portion (812) and the drum (41); and the second guide portion (812) is an inverted conical structure.

4. The dry desulfurization device according to claim 1 or 3, characterized in that: Each of the screening structures (7) is evenly distributed around the circumference of the drum (41), and each of the screening structures (7) comprises a plurality of screening paths (71), and each of the screening paths (71) is arranged in sequence along a linear direction.

5. The dry desulfurization device according to claim 4, characterized in that: The second conveying passage (6) comprises a connecting pipe (61) and a conveying pipe (62); the connecting pipe (61) is located between the two ends of the conveying pipe (62), and the two ends of the connecting pipe (61) are respectively connected to the rotating body (8) and the conveying pipe (62); the conveying pipe (62) is connected to the nozzle (3), and a conveying fan (9) is provided at one end away from the nozzle (3); and the air outlet of the conveying fan (9) is connected to the conveying pipe (62).

6. The dry desulfurization device according to claim 5, characterized in that: A first rotary valve (10) is provided between the hopper (2) and the first conveying channel (5), and the connecting pipe (61) includes a second rotary valve (611).

7. The dry desulfurization device according to claim 6, characterized in that: An auger (51) is provided inside the first conveying channel (5), and a conveying motor (52) is provided outside the first conveying channel (5), and the auger (51) is linked to the output shaft of the conveying motor (52).

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