Desulfurization device for flue gas purification

Abstract

The utility model relates to the technical field of flue gas desulfurization, and discloses a desulfurization device for flue gas purification, which improves the flue gas desulfurization efficiency and effect from multiple aspects, can effectively remove pollutants such as sulfur dioxide in flue gas, enables the purified flue gas to better meet the environment-friendly emission standard, and reduces the pollution to the environment. Comprising a main flue which is connected with a flue gas outlet end and comprises an inlet section and a reaction section; the shunting flue is connected to the main flue and comprises an inlet section and a reaction section; the flow valve is arranged on the shunting flue and is close to the main flue; the converging pipe is connected to the tail ends of the main flue and the shunting flue; the discharge pipe is connected to the end part of the converging pipe; the spiral guide plates are arranged at the inlet section of the main flue and the inlet section of the shunting flue; the baffle plates are arranged on the main flue reaction section and the shunting flue reaction section; and the treatment assembly is arranged on the main flue reaction section and the shunting flue reaction section and is positioned on the rear section of the baffle plate.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology, and more specifically, to a desulfurization device for flue gas purification. Background Technology

[0002] In modern industrial production, the widespread use of fossil fuels such as coal and oil generates large amounts of flue gas containing pollutants such as sulfur dioxide. If this flue gas is emitted directly without effective treatment, it will cause serious air pollution, leading to environmental problems such as acid rain, and endangering ecological balance and human health. Therefore, efficient flue gas desulfurization technology has become a key research direction in the field of industrial waste gas treatment.

[0003] Existing flue gas desulfurization (FGD) devices have shortcomings in practical applications. Regarding promoting sufficient contact between flue gas and desulfurizing agents, traditional devices have relatively simple flue duct designs. Common flue duct structures result in relatively stable flue gas flow with low turbulence, leading to insufficient contact between the flue gas and desulfurizing agents. Furthermore, the residence time of the flue gas in the reaction zone is short, making it difficult to fully complete the desulfurization reaction and thus hindering the achievement of efficient desulfurization. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a desulfurization device for flue gas purification.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A desulfurization device for flue gas purification includes:

[0007] The main flue is connected to the flue gas outlet and includes an inlet section and a reaction section.

[0008] The diversion flue is connected to the main flue and includes an inlet section and a reaction section;

[0009] The flow valve is located in the diversion flue and close to the main flue.

[0010] The merging pipe connects the main flue and the tail end of the branch flue;

[0011] Discharge pipe, connected to the end of the manifold;

[0012] Spiral guide vanes are installed at the inlet sections of the main flue and the branch flue.

[0013] Baffles are installed in the reaction section of the main flue and the reaction section of the branch flue.

[0014] The processing components are located in the reaction section of the main flue and the reaction section of the branch flue, and are situated behind the baffle plate.

[0015] Furthermore, the above scheme further includes a conical conical structure for the merging pipe to reduce local eddies and unevenness that may occur due to the direct mixing of the two flue gases.

[0016] Furthermore, the processing component in the above scheme includes:

[0017] The catalytic porous plate is installed in the reaction section of the main flue and the reaction section of the branch flue, and is located after the baffle plate;

[0018] There are several atomizing nozzles, which are located in the reaction section of the main flue and the reaction section of the branch flue, and are situated behind the catalytic porous plate.

[0019] Furthermore, the above scheme includes three sets of processing components in both the main flue reaction section and the branch flue reaction section, with the upper atomizing nozzles covering in an umbrella shape and the middle and lower atomizing nozzles spraying vertically to form a cross atomization network, thereby improving the processing effect.

[0020] Furthermore, in the above scheme, the inlet end of the main flue is connected to the outlet end of the flue gas through a guide cone, so that when the flue gas enters the constriction section of the guide cone, the flow velocity increases due to the decrease in cross-sectional area, forming a high-speed jet that accelerates its entry into the main flue.

[0021] Furthermore, the above solution includes a flow equalization plate installed inside the discharge pipe, which ensures that the purified flue gas is discharged evenly from the discharge pipe, thereby improving emission stability.

[0022] Furthermore, the above solution includes a packing layer installed inside the discharge pipe, and the packing layer is located downstream of the flow equalization plate to improve the stability and reliability of the system.

[0023] Furthermore, the corners of the main flue and the branch flue are rounded or equipped with diversion plates to reduce ash accumulation.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] This invention improves the efficiency and effectiveness of flue gas desulfurization from multiple aspects through the synergistic effect of the main flue, branch flue, flow valve, confluence pipe, discharge pipe, spiral guide plate, baffle plate, and treatment components. It can effectively remove pollutants such as sulfur dioxide from flue gas, making the purified flue gas more compliant with environmental emission standards and reducing environmental pollution. The incoming flue gas is divided into two sections, and the turbulence intensity of the flue gas is enhanced during the flow process. The residence time of the flue gas in the reaction section is also extended, allowing more time for pollutants such as sulfur dioxide in the flue gas to react with the desulfurization substances in the treatment components, thereby improving the desulfurization effect and reducing pollutant emissions. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram showing the installation position of the flow guide cone.

[0028] Figure 3 This is a schematic diagram showing the installation location of the flow equalization plate;

[0029] Figure 4 This is a schematic diagram showing the installation location of the filler layer;

[0030] The components are: 1. Main flue; 11. Guide cone; 2. Diversion flue; 3. Flow valve; 4. Combination pipe; 5. Discharge pipe; 51. Flow equalization plate; 52. Packing layer; 6. Spiral guide plate; 7. Baffle plate; 8. Treatment component; 81. Catalytic porous plate; 82. Atomizing nozzle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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 scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0032] See attached document Figure 1 As shown, a desulfurization device for flue gas purification includes:

[0033] Main flue 1 is connected to the flue gas outlet and includes an inlet section and a reaction section;

[0034] The diversion flue 2 is connected to the main flue 1 and includes an inlet section and a reaction section;

[0035] The flow valve 3 is located in the diversion flue 2 and close to the main flue 1 so as to divert the flue gas entering the main flue 1 according to a certain flow rate;

[0036] The confluence pipe 4 has a conical structure and connects to the tail ends of the main flue 1 and the branch flue 2;

[0037] Discharge pipe 5 is connected to the end of confluence pipe 4;

[0038] Spiral guide plate 6 is installed at the inlet section of main flue 1 and the inlet section of diversion flue 2;

[0039] Baffles 7 are installed in the reaction section of the main flue 1 and the reaction section of the branch flue 2 to further enhance the turbulence intensity of the flue gas and prolong the residence time of the flue gas in the reaction section;

[0040] The processing component 8 is located in the reaction section of the main flue 1 and the reaction section of the diversion flue 2, and is situated downstream of the baffle plate 7.

[0041] In the specific implementation process of this utility model:

[0042] The flue is connected to the flue gas outlet end, first receiving a large amount of flue gas from the flue gas source. Then, the flow valve 3 can divert the flue gas in the main flue 1 to the diversion flue 2 according to a certain flow ratio according to actual needs, so as to achieve a reasonable distribution of flue gas flow. By installing spiral guide plates 6 in the inlet section of the main flue 1 and the inlet section of the diversion flue 2, when the flue gas enters these inlet sections, the spiral guide plates 6 will cause the flue gas to rotate and form a vortex. This vortex can increase the turbulence of the flue gas and make the distribution of the flue gas in the flue more uniform.

[0043] Subsequently, the baffles 7 installed in the reaction section of the main flue duct 1 and the reaction section of the diversion flue duct 2 cause the flue gas to undergo multiple turns and collisions within the reaction section, further enhancing the turbulence intensity of the flue gas and extending the residence time of the flue gas within the reaction section. After the flue gas is enhanced by turbulence through the baffles 7, it then fully contacts and reacts with the desulfurizing agent in the treatment component 8, thereby improving the desulfurization efficiency.

[0044] The treated flue gas eventually converges uniformly at the position of the confluence pipe 4. Since the confluence pipe 4 is designed with a conical structure, it reduces the local eddies and unevenness that may be caused by the direct mixing of the two flue gas streams. Finally, the converged flue gas is discharged through the discharge pipe 5.

[0045] Regarding the structure of processing component 8 in the above scheme, please refer to the appendix. Figure 1 As shown, processing component 8 includes:

[0046] The catalytic porous plate 81 is disposed in the reaction section of the main flue 1 and the reaction section of the branch flue 2, and is located after the baffle plate 7;

[0047] There are several atomizing nozzles 82, which are located in the reaction section of the main flue 1 and the reaction section of the branch flue 2, and are located behind the catalytic porous plate 81.

[0048] The main flue 1 reaction section and the branch flue 2 reaction section each have three sets of treatment components 8, with the upper atomizing nozzle 82 covering in an umbrella shape and the middle and lower atomizing nozzles 82 spraying vertically to form a cross atomization network and improve the treatment effect.

[0049] In the above scheme, considering the effect of flue gas entry, therefore, refer to the appendix. Figure 2 As shown:

[0050] The inlet end of the main flue 1 is connected to the outlet end of the flue gas through the guide cone 11, so that the flue gas enters the contraction section of the guide cone 11 and the flow velocity increases due to the decrease in cross-sectional area, forming a high-speed jet that accelerates into the main flue 1.

[0051] In the above scheme, considering the effect of flue gas discharge after treatment, the following is provided: Figure 3 As shown:

[0052] A flow equalization plate 51 is installed inside the discharge pipe 5 to ensure that the purified flue gas is discharged evenly from the discharge pipe 5, avoiding excessively high pollutant concentrations in local flue gas and ensuring that the flue gas across the entire discharge section can stably meet environmental emission standards. Furthermore, uniform flue gas discharge is conducive to the better functioning of subsequent flue gas monitoring and treatment equipment, reducing monitoring errors that may be caused by uneven flue gas discharge and the potential for secondary pollution from insufficiently treated flue gas discharged into the atmosphere.

[0053] In the above scheme, considering the purification effect of the treated flue gas, therefore, refer to the appendix. Figure 4 As shown:

[0054] A packing layer 52 is installed inside the discharge pipe 5, and the packing layer 52 is located after the flow equalization plate 51. When the flue gas flow rate, temperature, pollutant concentration, etc. fluctuate, the packing layer 52 can play a buffering role to a certain extent. Because its adsorption and reaction process has a certain inertia, the purification effect will not drop significantly due to instantaneous changes in operating conditions, thereby ensuring the stability and reliability of the entire flue gas purification system.

[0055] In the above scheme, considering that heavier particles are prone to deposit at the corners of the main flue 1 and the branch flue 2, resulting in ash accumulation, the corners of the main flue 1 and the branch flue 2 are rounded or equipped with diversion plates (not shown in the figure).

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A desulfurization device for flue gas purification, characterized in that it comprises: a main flue (1) connected to the flue gas outlet end and comprising an inlet section and a reaction section; a shunt flue (2) connected to the main flue (1) and comprising an inlet section and a reaction section; a flow valve (3) arranged in the shunt flue (2) near the main flue (1); a merging pipe (4) connected to the tail ends of the main flue (1) and the shunt flue (2); an exhaust pipe (5) connected to the end of the merging pipe (4); spiral guide vanes (6) arranged in the inlet sections of the main flue (1) and the shunt flue (2); baffles (7) arranged in the reaction sections of the main flue (1) and the shunt flue (2); and a treatment assembly (8) arranged in the reaction sections of the main flue (1) and the shunt flue (2) behind the baffles (7).

2. The desulfurization device for flue gas purification according to claim 1, characterized in that the merging pipe (4) is in a tapered structure.

3. The desulfurization device for flue gas purification according to claim 2, characterized in that the treatment assembly (8) comprises: catalytic porous plates (81) arranged in the reaction sections of the main flue (1) and the shunt flue (2) behind the baffles (7); and atomizing nozzles (82) arranged in the reaction sections of the main flue (1) and the shunt flue (2) behind the catalytic porous plates (81).

4. The desulfurization device for flue gas purification according to claim 3, characterized in that there are three groups of treatment assemblies (8) in the reaction sections of the main flue (1) and the shunt flue (2), and the upper layer of atomizing nozzles (82) is in an umbrella shape, while the middle and lower layers of atomizing nozzles (82) are in a vertical injection, so as to form a cross atomization network.

5. The desulfurization device for flue gas purification according to claim 4, characterized in that the flue gas outlet end is connected to the flue gas inlet end of the main flue (1) through a guide cone pipe (11).

6. The desulfurization device for flue gas purification according to claim 5, characterized in that the exhaust pipe (5) is provided with a flow equalizing plate (51).

7. The desulfurization device for flue gas purification according to claim 6, characterized in that the exhaust pipe (5) is provided with a filler layer (52) behind the flow equalizing plate (51).

8. The desulfurization device for flue gas purification according to claim 7, characterized in that the corners of the main flue (1) and the shunt flue (2) are provided with rounded corners or flow guide plates. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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