Desulfurizing tower of belt type sintering machine

Abstract

The utility model discloses a belt type sintering machine desulfurizing tower which comprises a desulfurizing tower body, the desulfurizing tower body is provided with a flue gas inlet and a flue gas outlet, and a gap-adjustable demisting grating and a Pall ring layer are assembled in the desulfurizing tower body. The demisting grille comprises an outer ring, a baffle plate, an adjusting arm, a linkage rod and a driving assembly, the rotatable baffle plate is arranged in the outer ring, the linkage rod capable of driving the baffle plate to incline is installed on the baffle plate through the adjusting arm, the linkage rod is driven by the driving assembly, and the adjusting arm is fixed to the baffle plate. According to the belt type sintering machine desulfurizing tower, the driving assembly drives the adjusting arms to achieve inclination of the baffle plates, the purpose of adjusting the distance between the baffle plates is achieved, fog drops of different sizes are controlled, sintering of different raw materials can be matched, spraying parameters are adjusted according to the flue gas concentration, the particle size of the fog drops and rising flue gas are changed, and the gap between the baffle plates is changed; therefore, the demisting function keeps high efficiency, and pollution caused by excessive emission is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, in particular to a demisting system of a desulfurization tower of a belt sintering machine. Background Art

[0002] The desulfurization tower is a tower-type equipment for desulfurization of industrial waste gas. The desulfurization tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal, and is also known as granite water film desulfurization dust collector, or granite water film desulfurization dust collector.

[0003] The desulfurization tower equipped with the sintering machine should be used according to the different products produced by the sintering machine. The amount of flue gas from the sintering of manganese ore is different. The sulfur content of manganese ore is higher than that of chromium ore, which causes the desulfurization tower to exceed the emission standard, resulting in excessive SO2 concentration in the flue gas, causing serious environmental pollution. Sulfur dioxide is a colorless gas with a strong irritating odor. It is one of the main pollutants in the atmosphere, which seriously exceeds the industry and environmental protection requirements and urgently needs to be rectified. Utility Model Content

[0004] The utility model aims to provide a desulfurization tower for a belt sintering machine to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A belt sintering machine desulfurization tower, comprising a desulfurization tower, the desulfurization tower is provided with a flue gas inlet and a flue gas outlet, and a demisting grid and a ball ring layer with adjustable gaps are installed inside the desulfurization tower;

[0007] The demisting grille comprises an outer ring, a baffle, an adjusting arm, a linkage rod and a driving assembly. A rotatable baffle is arranged inside the outer ring. The baffle is installed with a linkage rod that can drive the baffle to tilt through the adjusting arm. The linkage rod is driven by the driving assembly.

[0008] As a further solution of the utility model: the adjusting arm is fixed to the baffle, the adjusting arm extends downward by a force arm of a certain length, the linkage rod is installed with a fixed shaft, and the bottom end of the adjusting arm is rotatably connected to the fixed shaft through a bearing.

[0009] As a further solution of the utility model: the driving assembly includes a driving shaft and a driving device, and the driving device is rotatably connected to the linkage rod via the driving shaft.

[0010] As a further solution of the utility model: a gear rod for support is arranged at the bottom of the outer ring, an inverted triangular groove is opened at the top of the gear rod, and the baffle is located in the groove.

[0011] As a further solution of the utility model: a ridge dehumidifier located above the ball ring layer is also arranged in the desulfurization tower.

[0012] As a further solution of the utility model: the interior of the desulfurization tower is equipped with a spray layer located below the demisting grid, and cleaning pipelines located at the top and bottom of the roof dehumidifier.

[0013] As a further solution of the utility model: the spray layer and the cleaning pipeline are equipped with a slurry pump circulation system;

[0014] The slurry pump circulation system includes a liquid delivery pipeline and a pump group. The pump group delivers the spray liquid and the cleaning liquid into the cleaning pipeline and the slurry pump circulation system through the liquid delivery pipeline.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The desulfurization tower of the belt sintering machine drives the adjustment arm through the drive assembly to achieve the inclination of the baffle plate, thereby adjusting the baffle plate spacing and controlling droplets of different sizes to match the sintering of different raw materials. The spray parameters are adjusted according to the flue gas concentration to cause the droplet size and rising flue gas to change, thereby changing the baffle plate gap, so that the demisting function maintains a high efficiency and avoids pollution caused by excessive emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural stereogram of a desulfurization tower of a belt sintering machine;

[0018] Figure 2 It is a structural schematic diagram of a desulfurization tower of a belt sintering machine;

[0019] Figure 3 This is a schematic diagram of the structure of a demisting grid in a desulfurization tower of a belt sintering machine;

[0020] Figure 4 This is a schematic diagram of the structure of a gear rod in a desulfurization tower of a belt sintering machine;

[0021] Figure 5 This is a schematic diagram of the structure of a drive assembly in a desulfurization tower of a belt sintering machine.

[0022] In the figure: 1. desulfurization tower; 2. flue gas inlet; 3. flue gas outlet; 4. oxidation air pipeline; 5. defogger grille; 501. outer ring; 502. baffle; 503. adjusting arm; 504. linkage rod; 505. drive shaft; 506. drive device; 507. gear rod; 508. bearing; 509. fixed shaft; 6. ridge dehumidifier; 7. spray layer; 8. slurry pump circulation system; 9. cleaning pipeline; 10. ball ring layer. DETAILED DESCRIPTION

[0023] See also Figures 1 to 5In the embodiment of the utility model, a belt sintering machine desulfurization tower includes a desulfurization tower 1, the desulfurization tower 1 is provided with a flue gas inlet 2 and a flue gas outlet 3, and the desulfurization tower 1 is equipped with a demisting grid 5 and a ball ring layer 10 with adjustable gaps;

[0024] The demisting grille 5 comprises an outer ring 501, a baffle 502, an adjusting arm 503, a linkage rod 504 and a driving assembly. A rotatable baffle 502 is arranged inside the outer ring 501. The baffle 502 is installed with a linkage rod 504 that can drive the baffle 502 to tilt through the adjusting arm 503. The linkage rod 504 is driven by the driving assembly. The baffle 502 is of a wave-shaped design. When the gas containing mist flows through the demisting grille 5 at a certain speed, due to the inertial impact of the gas, the mist collides with the baffle 502 and the gathered droplets are so large that the gravity generated by itself exceeds the combined force of the rising force of the gas and the surface tension of the liquid. The droplets are separated from the surface of the baffle 502. Therefore, the spacing of the baffle 502 is a barrier. The key to the size of the intercepted droplets is that the smaller the spacing of the baffle plates 502 is, the smaller the intercepted droplets are, but the resistance increases accordingly. Appropriate adjustment can make the bottom spray so that the spray liquid is evenly distributed. The gap adjustment of the baffle plates 502 drives the linkage rod 504 to move through the driving assembly. The movement of the linkage rod 504 causes the adjustment arm 503 to tilt and drives the baffle plates 502 to tilt together. The baffle plates 502 are uniformly tilted, and the vertical distance between them becomes shorter and the gap becomes smaller, thereby achieving the purpose of adjusting the gap of the baffle plates 502, so that it can match the sintering of different raw materials. The spray parameters are adjusted according to the flue gas concentration to cause the droplet size and rising flue gas to change, thereby changing the gap of the baffle plates 502, so that the demisting function maintains a high efficiency and avoids pollution caused by excessive emissions.

[0025] In a preferred embodiment, the adjusting arm 503 is fixed to the baffle 502, and the adjusting arm 503 extends a certain length of the force arm downward. The linkage rod 504 is installed with the fixed shaft 509. The bottom end of the adjusting arm 503 is rotatably connected to the fixed shaft 509 through a bearing 508. The baffle 502 serves as a resistance component. When it is driven for uniform adjustment, it will generate huge resistance. Therefore, it is necessary to install an adjusting arm 503 to increase the length of the power arm so that the driving assembly can drive the adjusting arm 503 to drive the baffle 502 to tilt and adjust the spacing with a just-struck stroke. At the same time, the adjustment of a larger stroke can also make the adjustment of the spacing of the baffle 502 more precise and specific.

[0026] In a preferred embodiment, the driving assembly includes a driving shaft 505 and a driving device 506. The driving device 506 is rotatably connected to the linkage rod 504 through the driving shaft 505. The adjusting arm 503 follows an arc trajectory with the baffle 502 as the center during the driving process. The linkage rod 504 is offset upward during the driving process. Therefore, a driving shaft 505 needs to be added between the driving device 506 and the linkage rod 504 to achieve compensation, so as to realize a flexible connection while maintaining the rigidity of the drive.

[0027] In a preferred embodiment, a gear rod 507 for support is provided at the bottom of the outer ring 501, and an inverted triangular groove is provided at the top of the gear rod 507. The baffle plate 502 is located in the groove. For a desulfurization tower 1 with a large diameter, the internal baffle plate 502 is longer, and therefore it will bend downward under the influence of gravity during the tilting process. By adding the gear rod 507 to support it, the baffle plate 502 can be effectively prevented from bending downward due to insufficient rigidity. The design of the inverted triangular groove can meet the angle change of the baffle plate 502 when it is tilted.

[0028] In a preferred embodiment, a ridge dehumidifier 6 located above the ball ring layer 10 is also provided in the desulfurization tower 1. When facing the atmospheric airflow, in order to meet the emission of flue gas and reduce the air pressure inside the desulfurization tower 1, the spacing adjustment of the baffle 502 is limited. For this reason, the ball ring layer 10 and the ridge dehumidifier 6 are installed as a guarantee for subsequent processing.

[0029] In a preferred embodiment, the interior of the desulfurization tower 1 is provided with a spray layer 7 located below the demisting grid 5 and cleaning pipelines 9 located at the top and bottom of the ridge dehumidifier 6 , and the cleaning pipelines 9 are used to clean the ridge dehumidifier 6 and the demisting grid 5 .

[0030] In a preferred embodiment, the spray layer 7 and the cleaning pipeline 9 are equipped with a slurry pump circulation system 8;

[0031] The slurry pump circulation system 8 includes a liquid delivery pipeline and a pump group. The pump group delivers the spray liquid and the cleaning liquid into the cleaning pipeline 9 and the slurry pump circulation system 8 through the liquid delivery pipeline. The slurry pump circulation system 8 cleans the ridge dehumidifier 6 by pumping and spraying the cleaning liquid through the cleaning pipeline 9. The water source of the spray layer 7 and the cleaning pipeline 9 can selectively extract the oxidized water inside the desulfurization tower 1. The spray and cleaning water are gathered at the bottom of the desulfurization tower 1 by gravity. The oxidized air is injected into the accumulated water at the bottom of the desulfurization tower 1 by setting an oxidized air pipeline 4 to form oxidized water.

[0032] The demisting equipment on the top of the spray layer 7 of the desulfurization tower 1 adopts a three-layer design, the first layer is the demisting grille 5, the second and third layers are ridge dehumidifiers, the first-stage baffle 502 of the demisting grille 5 is optimized to have a spacing of 27.5--30mm, and the spacing can be adjusted. The main function is to intercept droplets of 75--500 microns. The second and third stages are ridge dehumidifiers 6, with a blade spacing of 50--75mm optimized, and the roof inclination angle is the optimal angle, so as to achieve a better separation effect, and the main function is to intercept droplets larger than 50 microns, which plays a greater role in separating flue gas droplets, thereby greatly improving the gypsum rain problem at the desulfurization outlet.

[0033] To improve the gypsum rain problem at the outlet of desulfurization tower 1, the design can be optimized according to the actual flow rate of desulfurization tower 1. It is necessary to further improve the uniformity of liquid distribution. Improving separation efficiency is the fundamental solution to the problem. For this reason, a 300mm high layer of ball rings is laid on the demisting grid 5 of desulfurization tower 1. Under the same pressure reduction, the processing capacity can be increased by more than 50%. Due to the addition of grids and ball rings, the utilization rate of the desulfurization tower surface is greatly improved, the air flow resistance is small, the spray liquid is evenly distributed, the separation efficiency is improved, and the operation flexibility is large. The desulfurization efficiency is increased by about 60%. Ball rings are a kind of tower filler with high separation efficiency and wide application.

[0034] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0035] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A desulfurization tower for a belt sintering machine, comprising a desulfurization tower (1), wherein the desulfurization tower (1) is provided with a flue gas inlet (2) and a flue gas outlet (3), and is characterized in that: The desulfurization tower (1) is internally equipped with a demisting grid (5) with adjustable gaps and a ball ring layer (10); The demisting grille (5) comprises an outer ring (501), a baffle plate (502), an adjusting arm (503), a linkage rod (504) and a driving assembly. A rotatable baffle plate (502) is arranged inside the outer ring (501). The baffle plate (502) is provided with a linkage rod (504) that can drive the baffle plate (502) to tilt via the adjusting arm (503). The linkage rod (504) is driven by the driving assembly.

2. A desulfurization tower for a belt sintering machine according to claim 1, characterized in that: The adjusting arm (503) is fixed to the baffle (502), the adjusting arm (503) extends a force arm of a certain length downward, the linkage rod (504) is installed with a fixed shaft (509), and the bottom end of the adjusting arm (503) is rotatably connected to the fixed shaft (509) via a bearing (508).

3. A desulfurization tower for a belt sintering machine according to claim 1 or 2, characterized in that: The driving assembly comprises a driving shaft (505) and a driving device (506), and the driving device (506) is rotatably connected to the linkage rod (504) via the driving shaft (505).

4. A desulfurization tower for a belt sintering machine according to claim 1, characterized in that: A gear rod (507) for support is provided at the bottom of the outer ring (501), an inverted triangle groove is provided at the top of the gear rod (507), and the baffle (502) is located in the groove.

5. The desulfurization tower of a belt sintering machine according to claim 1, characterized in that: The desulfurization tower (1) is also provided with a ridge dehumidifier (6) located above the ball ring layer (10).

6. A desulfurization tower for a belt sintering machine according to claim 5, characterized in that: The desulfurization tower (1) is provided with a spray layer (7) located below the demisting grid (5), and cleaning pipelines (9) located at the top and bottom of the ridge dehumidifier (6).

7. A desulfurization tower for a belt sintering machine according to claim 6, characterized in that: The spray layer (7) and the cleaning pipeline (9) are equipped with a slurry pump circulation system (8); The slurry pump circulation system (8) comprises a liquid delivery pipeline and a pump group, and the pump group delivers the spray liquid and the cleaning liquid into the cleaning pipeline (9) and the slurry pump circulation system (8) through the liquid delivery pipeline.

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