Desulfurization device for flue gas treatment

Abstract

The utility model discloses a desulfurization device for flue gas treatment, which comprises a washing tower and a dosing tank, a demister and a plurality of groups of spray desulfurization components are arranged in the washing tower from top to bottom, each spray desulfurization component comprises a spray pipe and a filler layer from top to bottom, a plurality of rotary spray components are arranged at the bottom of each spray pipe, and a plurality of spray nozzles are arranged on the spray pipe. The rotary spraying assembly comprises a rotary connector, a rotary disc and an atomizing pipe, and the rotary end of the rotary connector is connected with the rotary disc. A plurality of groups of rotary spraying assemblies are designed below the spraying pipe, when alkali liquor is discharged into the rotary spraying assemblies, sewage sprayed out of an atomizing opening can provide counter-acting force for a rotating disc under the pressure effect of the water pressure of the alkali liquor, the rotating disc and the atomizing pipe are made to rotate, the spraying uniformity can be guaranteed while pipelines are saved, and the spraying efficiency is improved. Meanwhile, in the rotating process, the generated centrifugal force can drive the gas to generate vortex, so that the contact area between the gas and the medicament is increased, and the gas desulfurization effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas treatment, in particular to a desulfurization device for flue gas treatment. Background Art

[0002] With the development of industry and the improvement of people's living standards, people's demand for energy is also increasing. Sulfur oxides in coal-fired flue gas have become the main cause of air pollution. Reducing sulfur oxide emissions has become a top priority in current atmospheric environmental governance.

[0003] At present, wet scrubbers are mainly used to spray and purify sulfides in flue gas. In order to ensure uniform gas-liquid mixing, multiple groups of spray pipes are arranged in the current wet scrubbers, and multiple groups of spray ports are designed on the spray pipes. The above design will undoubtedly increase the overall cost. At the same time, the spray pipe itself has a certain spraying range, which may lead to the existence of spray dead corners (or when a spray port is blocked), thus affecting the desulfurization quality. Utility Model Content

[0004] The purpose of the utility model is to provide a desulfurization device for flue gas treatment in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a desulfurization device for flue gas treatment, including a washing tower and a dosing box, wherein the interior of the washing tower is provided with a demister and a plurality of spray desulfurization components from top to bottom, wherein the spray desulfurization components include a spray pipe and a packing layer from top to bottom, wherein a plurality of rotary spray components are provided at the bottom of the spray pipe, wherein the rotary spray components include a rotary joint, a rotary disk and an atomizing pipe, wherein the rotary end of the rotary joint is connected to the rotary disk, wherein the atomizing pipe is multiple and circumferentially distributed at the outer end of the rotary disk, and wherein the bottom of the atomizing pipe is provided with a plurality of atomizing ports inclined outward;

[0006] Guide rails are arranged on both sides of the demister, and guide rail grooves adapted for sliding of the guide rails are arranged on the inner wall of the washing tower.

[0007] In a preferred embodiment, the inclination angle of the atomization port is 35° to 60°, the upper end of the rotary joint is installed at the bottom of the spray pipe, and one end of the spray pipe extends out of the washing tower and is connected to a dosing pipe through a flange.

[0008] In a preferred embodiment, the bottom of the dosing pipe extends into the dosing box, a dosing pump and a booster pump are provided on the dosing pipe, and the dosing box has a dosing port.

[0009] In a preferred embodiment, a manhole is provided on one side of the spray desulfurization assembly on the washing tower, and a transparent window is fixed to the outer end of the manhole by a plurality of bolts.

[0010] In a preferred embodiment, a flue gas outlet is provided at the lower end of the spray desulfurization assembly on the washing tower, and a flue gas outlet is provided at the top of the washing tower.

[0011] In a preferred embodiment, a gas sensor is disposed inside the smoke exhaust port.

[0012] In a preferred embodiment, a sealing plate for closing the washing tower is provided at one end of the demister, the sealing plate is fixed to one side of the washing tower by bolts, and the outer end of the sealing plate has a handle.

[0013] In a preferred embodiment, a filter screen is provided in the washing tower below the smoke exhaust port, and a water collecting chamber is provided in the washing tower below the filter screen.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. In the utility model, multiple groups of rotating spray components are designed under the spray pipe. When the alkali solution is discharged into the rotating spray component, under the pressure of the alkali solution water pressure, the sewage sprayed from the atomization port will provide a reaction force to the rotating disk, so that the rotating disk and the atomization pipe rotate, which can save pipelines and ensure the uniformity of spraying;

[0016] 2. In the utility model, the centrifugal force generated by the rotating spray assembly during rotation drives the gas to generate vortexes, which slows down the upward flow of the gas and increases the contact area between the gas and the reagent, thereby ensuring the desulfurization effect of the gas;

[0017] 3. In the utility model, a pull-out demister is designed above the washing tower, through which the mist droplets in the gas are filtered out to avoid mixed mist droplets in the exhaust gas and affect the purification effect of the gas. Moreover, the whole is pull-out type, which makes subsequent replacement or cleaning more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall planar structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional plan structure of the utility model as a whole;

[0020] Figure 3 The utility model is a schematic diagram of the structure of the rotary spray assembly.

[0021] Markings in the figure: 1-washing tower, 2-dosing box, 3-boosting pump, 4-dosing pipe, 5-inspection hole, 6-flange, 7-smoke exhaust outlet, 8-demister, 81-guide rail, 82-sealing plate, 9-smoke exhaust inlet, 10-spray pipe, 11-packing layer, 12-filter screen, 13-water collecting chamber, 14-rotating spray assembly, 141-rotating joint, 142-rotating disk, 143-atomizing pipe, 15-gas sensor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] Reference Figure 1-3 A flue gas treatment desulfurization device includes a washing tower 1 and a dosing box 2. The washing tower 1 is provided with a demister 8 and a plurality of spray desulfurization components from top to bottom. The spray desulfurization components include a spray pipe 10 and a packing layer 11 from top to bottom. The packing layer 11 is a ball ring packing. The designed packing layer 11 can increase the gas-liquid contact area, thereby improving the desulfurization effect on the gas.

[0024] Furthermore, a plurality of rotary spray assemblies 14 are provided at the bottom of the spray pipe 10. The rotary spray assemblies 14 include a rotary joint 141, a rotary disk 142 and an atomizing pipe 143. The rotating end of the rotary joint 141 is connected to the rotary disk 142. The atomizing pipe 143 is multiple and circumferentially distributed at the outer end of the rotary disk 142. The bottom of the atomizing pipe 143 is provided with a plurality of outwardly inclined atomizing ports. The inclination angle of the atomizing port is 35° to 60°. The upper end of the rotary joint 141 is installed at the bottom of the spray pipe 10. A plurality of rotary spray assemblies 14 are designed below the spray pipe 10. When the alkali solution is discharged into the rotary spray assembly 14, under the pressure of the alkali solution water pressure, the sewage sprayed from the atomizing port will provide a reaction force to the rotary disk 142, so that the rotary disk 142 and the atomizing pipe 143 rotate. While saving pipelines, the uniformity of the spraying can also be ensured.

[0025] At the same time, the centrifugal force generated by the rotating spray assembly 14 during rotation will drive the gas to generate vortexes, slowing down the upward flow of the gas while increasing the contact area between the gas and the reagent, thereby ensuring the desulfurization effect of the gas.

[0026] Furthermore, guide rails 81 are provided on both sides of the demister 8, and the inner wall of the washing tower 1 is provided with guide rail grooves adapted for the sliding of the guide rails 81. A sealing plate 82 for closing the washing tower 1 is provided at one end of the demister 8. The sealing plate 82 is fixed to one side of the washing tower 1 by bolts, and the outer end of the sealing plate 82 has a handle. A pull-out demister 8 is designed above the washing tower 1. The demister 8 filters out the droplets in the gas to avoid mixed droplets in the exhaust gas and affect the purification effect of the gas. Moreover, the whole is pull-out, and subsequent replacement or cleaning is more convenient. Only the bolts need to be removed, and then the demister 8 can be pulled out by the handle.

[0027] Furthermore, one end of the spray pipe 10 extends out of the washing tower 1 and is connected to the dosing pipe 4 through the flange 6. The bottom of the dosing pipe 4 extends into the dosing box 2. The dosing pipe 4 is provided with a dosing pump and a booster pump 3. The dosing box 2 has a dosing port. The internal liquid medicine can be pumped into the spray pipe 10 through the dosing pump, so as to perform subsequent spray purification operations. The booster pump 3 can assist in the boosting operation when the overall water pressure is insufficient. After the boosting, it can also make the rotating spray assembly 14 rotate faster (under greater pressure).

[0028] Furthermore, an inspection hole 5 is provided on the washing tower 1 on one side of the spray desulfurization component, and a transparent window is fixed to the outer end of the inspection hole 5 by multiple bolts. The transparent window allows the staff to conveniently check the internal flue gas purification effect. When maintenance or cleaning of the interior is required, the transparent window can be removed to enter the washing tower 1 for maintenance.

[0029] The size of the inspection hole 5 is preferably 1 m*1 m.

[0030] In addition, a maintenance ladder (not shown) is wound around the outer end of the washing tower 1 to facilitate subsequent maintenance operations.

[0031] Furthermore, a flue gas outlet 9 is provided at the lower end of the spray desulfurization assembly on the washing tower 1 (a rain cover may be additionally designed on the top), and a flue gas outlet 7 is provided at the top of the washing tower 1, wherein a fan (not shown in the figure) for drawing in flue gas is designed at the flue gas outlet 9.

[0032] Furthermore, a gas sensor 15 is provided inside the flue gas outlet 7, and the gas sensor 15 can monitor the concentration of gases such as sulfur inside the exhaust flue gas, and can monitor in real time whether the emission standards are met.

[0033] Furthermore, a filter screen 12 is provided in the washing tower 1 below the flue gas outlet 9, and a water collecting chamber 13 is provided in the washing tower 1 below the filter screen 12. The wastewater can be preliminarily filtered through the filter screen 12, and the wastewater can be collected and treated through the water collecting chamber 13 for subsequent discharge, purification and utilization. A sewage pipe (not shown in the figure) connected to the outside is provided on one side of the water collecting chamber 13.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization device for flue gas treatment, comprising a scrubbing tower and a dosing box, characterized in that: The inside of the scrubbing tower is provided with a demister and multiple groups of spray desulfurization components from top to bottom, the spray desulfurization components include a spray pipe and a packing layer from top to bottom, a plurality of rotary spray components are provided at the bottom of the spray pipe, the rotary spray components include a rotary joint, a rotary disk and an atomizing pipe, the rotary end of the rotary joint is connected to the rotary disk, the atomizing pipe is multiple and circumferentially distributed at the outer end of the rotary disk, and a plurality of outwardly inclined atomizing ports are provided at the bottom of the atomizing pipe; Guide rails are arranged on both sides of the demister, and guide rail grooves adapted for sliding of the guide rails are arranged on the inner wall of the washing tower.

2. A flue gas treatment desulfurization device according to claim 1, characterized in that: The inclination angle of the atomizing port is 35° to 60°, the upper end of the rotary joint is installed at the bottom of the spray pipe, and one end of the spray pipe extends out of the washing tower and is connected to a dosing pipe through a flange.

3. A flue gas treatment desulfurization device as claimed in claim 2, characterized in that: The bottom of the dosing pipe extends into the dosing box, a dosing pump and a booster pump are arranged on the dosing pipe, and the dosing box has a dosing port.

4. A flue gas treatment desulfurization device according to claim 1, characterized in that: A maintenance hole is provided on one side of the spray desulfurization component on the washing tower, and a transparent window is fixed to the outer end of the maintenance hole by a plurality of bolts.

5. A flue gas treatment desulfurization device according to claim 1, characterized in that: The lower end of the spray desulfurization component is provided with a flue gas discharge inlet on the washing tower, and the top of the washing tower is provided with a flue gas discharge outlet.

6. A flue gas treatment desulfurization device according to claim 1, characterized in that: A gas sensor is arranged inside the smoke exhaust port.

7. A flue gas treatment desulfurization device according to claim 1, characterized in that: A sealing plate for closing the washing tower is provided at one end of the demister, the sealing plate is fixed to one side of the washing tower by bolts, and a handle is provided at the outer end of the sealing plate.

8. A flue gas treatment desulfurization device as claimed in claim 5, characterized in that: A filter screen is arranged in the washing tower below the smoke exhaust port, and a water collecting chamber is arranged in the washing tower below the filter screen.

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