Dry-type desulfurization spray humidifying device

Abstract

The utility model discloses a dry-type desulfurization spray humidifying device, and belongs to the technical field of flue gas desulfurization. Comprising a flue gas desulfurization cylinder, a flue gas cylinder is fixedly arranged at the bottom of an inner cavity of the flue gas desulfurization cylinder, a stirring rotating shaft is arranged in the middle of the inner cavity of the flue gas cylinder, and a plurality of uniformly-distributed stirring plates are arranged on the outer walls of the upper end and the lower end of the stirring rotating shaft; and a material supplementing barrel is communicated with the upper part of the side wall of the gas inlet pipe outside the flue gas desulfurization barrel through a pipeline. According to the device disclosed by the utility model, CaO powder and SO2 gas in flue gas can be stirred by the stirring plate to be in full contact and react, and in order to prevent the CaO powder in the flue gas from being insufficient, the material supplementing barrel for supplementing the CaO powder is arranged, so that the desulfurization effect of the flue gas can be effectively improved. In addition, clear water is atomized through the spraying disc, CaSO3 powder in the flue gas is adsorbed, and the CaSO3 powder is effectively prevented from being discharged along with the flue gas.

Description

Technical Field

[0001] The utility model relates to a dry desulfurization spray humidifying device, belonging to the technical field of flue gas desulfurization. Background Art

[0002] Industrial production often produces a large amount of flue gas, such as power generation, smelting, heating, etc. The flue gas carries a large number of harmful substances, among which SO2 is one of the main components. If it is not treated and directly discharged into the atmosphere, it will not only form acid rain and damage the environment, but also cause a variety of respiratory diseases. In recent years, with the continuous strengthening of environmental governance calls, the state has put forward increasingly stringent emission standards for the SO2 content in industrial flue gas.

[0003] Dry desulfurization, also known as dry flue gas desulfurization, refers to the use of powdered or granular absorbents, adsorbents or catalysts to remove sulfide-containing gases from flue gas. As the country continues to increase its efforts in air pollution control, the flue gas treatment field in the energy industry (including power plants, district heating, waste incineration, steel mills, chemical plants, etc.) has higher and higher requirements for emission concentration and emission volume. At the same time, with the intensification of competition, the energy industry's requirements for operating costs have also become more refined accordingly.

[0004] The existing technology has the following deficiencies: the existing dry desulfurization and dust removal device cannot fully stir the materials inside the desulfurization bin, resulting in incomplete reaction between the desulfurizer and the exhaust gas, and the sulfite dust generated by the reaction between the desulfurizer and the exhaust gas will be discharged into the atmosphere along with the exhaust gas, causing atmospheric dust pollution.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a dry desulfurization spray humidification device for effectively improving the reaction efficiency between the desulfurizer and the exhaust gas and preventing the sulfite dust generated by the reaction from being discharged into the atmosphere and polluting the atmospheric environment in view of the above shortcomings.

[0007] An optimized solution, a dry desulfurization spray humidification device, includes a flue gas desulfurization cylinder, a flue gas cylinder is fixedly arranged at the bottom of the inner cavity of the flue gas desulfurization cylinder, a stirring shaft is arranged in the middle of the inner cavity of the flue gas cylinder, a plurality of evenly distributed stirring plates are arranged on the outer walls of the upper and lower ends of the stirring shaft, and the stirring plates at the upper and lower ends of the stirring shaft are staggered;

[0008] The side wall of the flue gas cylinder is connected with an air intake pipe, one end of which is arranged outside the flue gas desulfurization cylinder, and the upper pipe on the side wall of the air intake pipe arranged outside the flue gas desulfurization cylinder is connected with a feeding cylinder, and the pipe connecting the feeding cylinder and the air intake pipe is provided with a solenoid valve.

[0009] Furthermore, a conical tube is provided at the upper part of the smoke tube, and an air outlet is provided at the upper part of the conical tube.

[0010] Furthermore, a scraper shaft is fixedly provided on the upper portion of the stirring shaft, and a plurality of evenly distributed connecting plates are fixedly provided on the upper portion of the scraper shaft, and the connecting plates are fixedly connected to the scrapers.

[0011] Furthermore, the upper end of the scraper shaft is arranged on the upper part of the air outlet, and the air outlet and the scraper shaft are arranged at a distance.

[0012] Furthermore, the upper fixed sleeve of the flue gas tube is provided with a bottom plate, and the scraper is arranged in contact with the side wall of the flue gas desulfurization tube and the upper surface of the bottom plate.

[0013] Furthermore, a motor is fixedly provided at the bottom of the flue gas desulfurization cylinder, and the motor is fixedly connected to the stirring shaft.

[0014] Furthermore, a spray plate is provided at the upper part of the inner cavity of the flue gas desulfurization cylinder, the spray plate is arranged at the upper part of the scraper shaft, and the side wall of the spray plate is spaced apart from the inner wall of the flue gas desulfurization cylinder.

[0015] Furthermore, an air outlet pipe is connected to the upper part of the flue gas desulfurization cylinder, a water inlet pipe is connected to the side wall of the air outlet pipe, and the water inlet pipe is fixedly connected to the spray plate.

[0016] Furthermore, a discharge pipe is connected to the side wall of the flue gas desulfurization cylinder, the discharge pipe is arranged on the upper part of the bottom plate, and the discharge pipe is provided with a valve.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] The utility model can stir the CaO powder and SO2 gas in the flue gas through the stirring plate to fully contact and react, and in order to prevent the lack of CaO powder in the flue gas, a feeding cylinder for replenishing CaO powder is provided, which can effectively improve the desulfurization effect of the flue gas. In addition, the spray plate is used to atomize clean water to absorb the CaSO3 powder in the flue gas, effectively preventing the CaSO3 powder from being discharged with the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model dry desulfurization spray humidification device;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the utility model dry desulfurization spray humidification device;

[0021] In the figure, 1- flue gas desulfurization cylinder, 2- flue gas cylinder, 3- stirring shaft, 4- stirring plate, 5- air inlet pipe, 6- feeding cylinder, 7- solenoid valve, 8- conical cylinder, 9- air outlet, 10- scraper shaft, 11- connecting plate, 12- scraper, 13- bottom plate, 14- motor, 15- spray plate, 16- air outlet pipe, 17- water inlet pipe, 18- discharge pipe, 19- valve. DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] Examples, such as Figure 1 and 2 As shown, the utility model provides a dry desulfurization spray humidification device, comprising a flue gas desulfurization cylinder 1, a flue gas cylinder 2 is fixedly arranged at the bottom of the inner cavity of the flue gas desulfurization cylinder 1, a stirring shaft 3 is arranged in the middle of the inner cavity of the flue gas cylinder 2, a plurality of evenly distributed stirring plates 4 are arranged on the outer walls of the upper and lower ends of the stirring shaft 3, and the stirring plates 4 at the upper and lower ends of the stirring shaft 3 are staggered;

[0026] The side wall of the flue gas tube 2 is connected with an air intake pipe 5, one end of which is arranged outside the flue gas desulfurization tube 1, and the upper pipe on the side wall of the air intake pipe 5 arranged outside the flue gas desulfurization tube 1 is connected with a feeding cylinder 6, and the pipe connecting the feeding cylinder 6 and the air intake pipe 5 is provided with a solenoid valve 7.

[0027] A conical tube 8 is provided at the upper part of the smoke tube 2, and an air outlet 9 is provided at the upper part of the conical tube 8.

[0028] A scraper shaft 10 is fixedly provided on the upper portion of the stirring shaft 3 , and a plurality of evenly distributed connecting plates 11 are fixedly provided on the upper portion of the scraper shaft 10 , to which the connecting plates 11 are fixedly connected with scrapers 12 .

[0029] The upper end of the scraper shaft 10 is arranged on the upper part of the air outlet 9, and the air outlet 9 and the scraper shaft 10 are arranged at a distance.

[0030] The upper part of the flue gas tube 2 is fixedly sleeved with a bottom plate 13 , and the scraper 12 is arranged in contact with the side wall of the flue gas desulfurization tube 1 and the upper surface of the bottom plate 13 .

[0031] A motor 14 is fixedly provided at the bottom of the flue gas desulfurization cylinder 1 , and the motor 14 is fixedly connected to the stirring shaft 3 .

[0032] A spray plate 15 is provided at the upper part of the inner cavity of the flue gas desulfurization cylinder 1 . The spray plate 15 is arranged at the upper part of the scraper shaft 10 . The side wall of the spray plate 15 is spaced apart from the inner wall of the flue gas desulfurization cylinder 1 .

[0033] An air outlet pipe 16 is connected to the upper portion of the flue gas desulfurization cylinder 1 , and a water inlet pipe 17 is connected to the side wall of the air outlet pipe 16 . The water inlet pipe 17 is fixedly connected to the spray plate 15 .

[0034] The side wall of the flue gas desulfurization cylinder 1 is connected to a discharge pipe 18 , which is arranged on the upper part of the bottom plate 13 and is provided with a valve 19 .

[0035] The working principle of this utility model:

[0036] The flue gas generated after dry flue gas desulfurization and the unreacted CaO powder sprayed into the boiler by dry flue gas desulfurization enter the flue gas tube 2 through the air inlet pipe 5. At the same time, the solenoid valve 7 is opened, and the CaO powder in the feed cylinder 6 follows the flue gas into the flue gas tube 2 to replenish the CaO powder in the flue gas, thereby preventing insufficient CaO powder and poor flue gas desulfurization effect.

[0037] The motor 14 is started, driving the stirring plate 4 to rotate to prevent the CaO powder from sinking in the flue gas tube 2. The CaO powder and the SO2 gas in the flue gas are stirred by the stirring plate 4 to fully contact and react. Clean water is introduced into the water inlet pipe 17, and the spray plate 15 atomizes the clean water. The CaSO3 powder generated by the reaction of the CaO powder and the SO2 gas in the flue gas and the desulfurized flue gas enter the bottom of the spray plate 15 through the outlet 9. The clean water atomized by the spray plate 15 adsorbs the CaSO3 powder in the flue gas and settles on the bottom plate 13 and the side wall of the flue gas desulfurization tube 1. The desulfurized flue gas is discharged through the outlet pipe 16. The mixture of CaSO3 powder and water settled on the bottom plate 13 is collected on the bottom plate 13 by the scraper 12, and then discharged through the discharge pipe 18.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0039] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. Dry desulfurization spray humidification device, characterized by: It comprises a flue gas desulfurization cylinder (1), wherein a flue gas cylinder (2) is fixedly arranged at the bottom of the inner cavity of the flue gas desulfurization cylinder (1), a stirring shaft (3) is arranged in the middle of the inner cavity of the flue gas cylinder (2), a plurality of evenly distributed stirring plates (4) are arranged on the outer walls of the upper and lower ends of the stirring shaft (3), and the stirring plates (4) at the upper and lower ends of the stirring shaft (3) are staggered; An air intake pipe (5) is connected to the side wall of the flue gas cylinder (2), one end of the air intake pipe (5) is arranged outside the flue gas desulfurization cylinder (1), and a feed cylinder (6) is connected to the upper part of the side wall of the air intake pipe (5) arranged outside the flue gas desulfurization cylinder (1), and a solenoid valve (7) is provided on the pipe connecting the feed cylinder (6) and the air intake pipe (5).

2. The dry desulfurization spray humidification device according to claim 1 is characterized in that: A conical tube (8) is provided at the upper portion of the smoke tube (2), and an air outlet (9) is provided at the upper portion of the conical tube (8).

3. The dry desulfurization spray humidification device according to claim 1 is characterized in that: A scraper shaft (10) is fixedly provided on the upper portion of the stirring shaft (3), a plurality of evenly distributed connecting plates (11) are fixedly provided on the upper portion of the scraper shaft (10), and the connecting plates (11) are fixedly connected to the scrapers (12).

4. The dry desulfurization spray humidification device according to claim 3 is characterized in that: The upper end of the scraper rotating shaft (10) is arranged above the air outlet (9), and the air outlet (9) and the scraper rotating shaft (10) are arranged at a distance.

5. The dry desulfurization spray humidification device according to claim 3 is characterized in that: The upper fixed sleeve of the flue gas cylinder (2) is provided with a bottom plate (13), and the scraper (12) is arranged to fit the side wall of the flue gas desulfurization cylinder (1) and the upper surface of the bottom plate (13).

6. The dry desulfurization spray humidification device according to claim 1 is characterized in that: A motor (14) is fixedly provided at the bottom of the flue gas desulfurization cylinder (1), and the motor (14) is fixedly connected to the stirring shaft (3).

7. The dry desulfurization spray humidification device according to claim 3 is characterized in that: A spray plate (15) is provided at the upper part of the inner cavity of the flue gas desulfurization cylinder (1). The spray plate (15) is arranged at the upper part of the scraper shaft (10). The side wall of the spray plate (15) is spaced apart from the inner wall of the flue gas desulfurization cylinder (1).

8. The dry desulfurization spray humidification device according to claim 7 is characterized in that: An air outlet pipe (16) is connected to the upper part of the flue gas desulfurization cylinder (1), and a water inlet pipe (17) is connected to the side wall of the air outlet pipe (16). The water inlet pipe (17) is fixedly connected to the spray plate (15).

9. The dry desulfurization spray humidification device according to claim 5, characterized in that: A discharge pipe (18) is provided in communication with the side wall of the flue gas desulfurization cylinder (1). The discharge pipe (18) is arranged on the upper part of the bottom plate (13). The discharge pipe (18) is provided with a valve (19).

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