Flue gas desulfurization purification device

Abstract

The utility model discloses a flue gas desulfurization and purification device, including desulfurizing tower, the inside of desulfurizing tower is provided with the limestone slurry of flue gas desulfurization, the side of desulfurizing tower is connected with the air inlet pipe, the one end of air inlet pipe extends to the liquid level below limestone slurry in desulfurizing tower inside, the top of desulfurizing tower is fixedly connected with the connecting pipe, one end of connecting pipe is fixedly connected with the purification tower, the inner wall of purification tower is fixedly installed with two groups of ultraviolet germicidal lamp in symmetry, the top one side of ultraviolet germicidal lamp of purification tower is provided with two groups of inserting slot, through the reaction desulfurization of limestone slurry in desulfurizing tower to flue gas, the flue gas after desulfurization is disinfected and sterilized with two groups of ultraviolet germicidal lamp in purification tower, and the flue gas is filtered with two groups of installation subassembly active carbon filter screen and HEPA filter screen, thereby reach the purpose of multilayer thorough purification to flue gas, have efficient desulfurization, disinfection and sterilization and filter purification etc.

Description

Technical Field

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

[0002] Flue gas desulfurization (FGD) refers to the process of removing sulfur dioxide from flue gas through chemical reactions. Common FGD methods include wet FGD and dry FGD. Wet FGD utilizes chemical agents to react the sulfur dioxide in the flue gas with an absorbent in a liquid solution, forming soluble sulfates, thus achieving desulfurization. Dry FGD involves injecting powdered or granular solid absorbent into the flue gas duct, where it reacts chemically with the sulfur dioxide in the flue gas to produce sulfate particles or other compounds.

[0003] For example, an energy-saving flue gas desulfurization and purification device (Announcement No.: CN221906485U) includes a filter cylinder with a fixed flue gas outlet. A quicklime spraying device is located on one side of the filter cylinder. A first baffle and a second baffle are fixedly connected inside the filter cylinder. A desulfurization liquid atomized water spraying device is also located on one side of the filter cylinder. This invention utilizes a quicklime spraying device on one side of the filter cylinder. The quicklime spraying device includes a lime powder box, a lime channel, and a lime spray head. The desulfurization liquid atomized water spraying device sprays atomized water into the flue gas, which can cool the gas, prevent detergent evaporation, and reduce flue gas desulfurization costs. It employs wet desulfurization. Under the action of the lime spray head, lime reacts with sulfuric acid to absorb sulfur dioxide from the gas. Excess liquid is then discharged into a sulfurous acid tank through a liquid flow pipe, reducing the processing steps and avoiding the large footprint required by flue gas desulfurization devices due to their complex processing procedures.

[0004] Based on the search of the aforementioned patents and the findings of existing equipment, the aforementioned equipment, when applied, sprays lime with a lime spray head to react with sulfuric acid, absorbs sulfur dioxide in the gas, and discharges the flue gas after desulfurization. However, the flue gas is not subsequently filtered and purified. Although the flue gas has undergone desulfurization, it still contains some particles and impurities. Direct emission of such flue gas will have an impact on the environment. Therefore, we need to propose a flue gas desulfurization and purification device. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas desulfurization and purification device, which uses two sets of ultraviolet germicidal lamps in the purification tower to sterilize and disinfect the desulfurized flue gas, and activated carbon filter and HEPA filter to filter the flue gas, thereby achieving the purpose of multi-layer thorough purification of flue gas and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flue gas desulfurization and purification device includes a desulfurization tower. The desulfurization tower contains a limestone slurry for flue gas desulfurization. An air inlet pipe is connected to one side of the desulfurization tower, with one end extending below the surface of the limestone slurry inside the tower. A connecting pipe is fixedly connected to the top of the desulfurization tower, with one end of the connecting pipe fixedly connected to a purification tower. Two sets of ultraviolet germicidal lamps are symmetrically fixedly installed on the inner wall of the purification tower. Two sets of insertion slots are provided on one side of the top of the ultraviolet germicidal lamps on the purification tower. Each of the two insertion slots contains an installation assembly. The two installation assemblies respectively contain an activated carbon filter and a HEPA filter for filtering the flue gas. An exhaust assembly is installed on the top of the purification tower.

[0008] Preferably, the installation assembly includes a support frame, which is fixedly installed on the inner wall of the purification tower, and the opening of the support frame corresponds to the insertion slot. An installation frame is movably inserted into the inside of the support frame, the HEPA filter is installed on the top of the installation frame, and a sealing plate is fixedly connected to one side of the installation frame. The sealing plate is sealed to the insertion slot.

[0009] Preferably, the exhaust assembly includes an exhaust pipe, which is fixedly installed on the top of the purification tower and communicates with the interior of the purification tower. An exhaust fan is fixedly installed inside the exhaust pipe.

[0010] Preferably, a protective net is fixedly installed above the exhaust fan on the exhaust pipe, and a rainproof eave is fixedly installed on the top of the exhaust pipe by a bracket.

[0011] Preferably, one end of the intake pipe is fixedly connected to a flow divider, and the outer side of the flow divider is provided with a plurality of flow divider holes in a ring array.

[0012] Preferably, a demister is fixedly installed on the inner wall of the top of the desulfurization tower.

[0013] Preferably, an inlet pipe is fixedly connected to one side of the desulfurization tower, and an outlet pipe is fixedly connected to the bottom of the desulfurization tower. Solenoid valves are installed on the outer walls of both the inlet and outlet pipes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes limestone slurry in a desulfurization tower to react and desulfurize flue gas. Two sets of ultraviolet germicidal lamps in the purification tower work together to sterilize and disinfect the desulfurized flue gas. Activated carbon filters and HEPA filters in two sets of installation components filter the flue gas, thereby achieving multi-layered and thorough purification of the flue gas. It features highly efficient desulfurization, sterilization and disinfection, and filtration purification. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention viewed from the front;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the purification tower of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation components, activated carbon filter, and HEPA filter of this utility model.

[0020] In the diagram: 1. Desulfurization tower; 2. Inlet pipe; 3. Connecting pipe; 4. Purification tower; 5. Ultraviolet germicidal lamp; 6. Insertion slot; 7. Mounting assembly; 71. Support frame; 72. Mounting frame; 73. Sealing plate; 8. Activated carbon filter; 9. HEPA filter; 10. Exhaust assembly; 101. Exhaust pipe; 102. Exhaust fan; 103. Protective net; 104. Rainproof eaves; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Solenoid valve; 14. Diverter plate; 15. Demister. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution:

[0023] A flue gas desulfurization and purification device includes a desulfurization tower 1, inside which is a limestone slurry for desulfurizing flue gas. An air inlet pipe 2 is connected to one side of the desulfurization tower 1, and one end of the air inlet pipe 2 extends below the surface of the limestone slurry inside the desulfurization tower 1. A connecting pipe 3 is fixedly connected to the top of the desulfurization tower 1, and one end of the connecting pipe 3 is fixedly connected to a purification tower 4. Two sets of ultraviolet germicidal lamps 5 are symmetrically fixedly installed on the inner wall of the purification tower 4. Two sets of insertion slots 6 are opened on one side of the top of the ultraviolet germicidal lamps 5 in the purification tower 4. An installation component 7 is installed inside each of the two sets of insertion slots 6. An activated carbon filter 8 and a HEPA filter 9 for filtering flue gas are respectively installed inside the two sets of installation components 7. An exhaust component 10 is installed on the top of the purification tower 4.

[0024] Furthermore, the installation assembly 7 includes a support frame 71, which is fixedly installed on the inner wall of the purification tower 4. The opening of the support frame 71 corresponds to the insertion slot 6. An installation frame 72 is movably inserted into the inside of the support frame 71. The HEPA filter 9 is installed on the top of the installation frame 72. A sealing plate 73 is fixedly connected to one side of the installation frame 72. The sealing plate 73 is sealed to the insertion slot 6, which facilitates the disassembly and replacement of the activated carbon filter 8 and the HEPA filter 9 through the installation assembly 7.

[0025] Furthermore, the exhaust assembly 10 includes an exhaust pipe 101, which is fixedly installed on the top of the purification tower 4 and the interior of the exhaust pipe 101 is connected to the interior of the purification tower 4. An exhaust fan 102 is fixedly installed inside the exhaust pipe 101 so that the exhaust fan 102 can be activated to discharge the flue gas that has undergone multiple purifications through the exhaust pipe 101.

[0026] Specifically, a protective net 103 is fixedly installed on the exhaust pipe 101 above the exhaust fan 102, and a rainproof eave 104 is fixedly installed on the top of the exhaust pipe 101 by a bracket, so that impurities or insects can be prevented from entering the exhaust pipe 101 through the protective net 103, and the rainproof eave 104 provides rain protection for the exhaust pipe 101.

[0027] Specifically, one end of the air inlet pipe 2 is fixedly connected to a diversion plate 14. The outer side of the diversion plate 14 is provided with a number of diversion holes in a ring array, which facilitates the diversion of flue gas into the limestone slurry inside the desulfurization tower 1 through the diversion holes, thereby increasing the contact area between the flue gas and the limestone slurry.

[0028] Specifically, a demister 15 is fixedly installed on the inner wall of the top of the desulfurization tower 1, which facilitates the neutralization reaction between sulfur in the flue gas and limestone slurry, and the resulting mist droplets and flue gas are demisted.

[0029] Specifically, a liquid inlet pipe 11 is fixedly connected to one side of the desulfurization tower 1, and a liquid outlet pipe 12 is fixedly connected to the bottom of the desulfurization tower 1. Solenoid valves 13 are installed on the outer walls of both the liquid inlet pipe 11 and the liquid outlet pipe 12. Limestone slurry is added to the desulfurization tower 1 through the liquid inlet pipe 11, and the used limestone slurry is replaced through the liquid outlet pipe 12.

[0030] Working principle: When this utility model is in use, the exhaust fan 102 in the exhaust assembly 10 at the top of the purification tower 4 is activated. The flue gas enters the diversion plate 14 through the inlet pipe 2 and is diverted into the limestone slurry through several diversion holes on the diversion plate 14. The limestone slurry reacts with the flue gas to generate calcium sulfite or calcium sulfate (gypsum), thereby effectively removing sulfur dioxide from the flue gas. The desulfurized flue gas is demisted by the demister 15 and enters the connecting pipe 3. The flue gas enters the purification tower 4 through the connecting pipe 3. Two sets of ultraviolet germicidal lamps 5 in the purification tower 4 work together to sterilize and disinfect the desulfurized flue gas. The activated carbon filter 8 and HEPA filter 9 in the two sets of installation components 7 filter the flue gas, thereby achieving the purpose of multi-layer thorough purification of the flue gas. The flue gas after multiple purifications is discharged through the exhaust pipe 101.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization and purification device, comprising a desulfurization tower (1), characterized in that: The desulfurization tower (1) is equipped with limestone slurry for flue gas desulfurization. One side of the desulfurization tower (1) is connected to an air inlet pipe (2). One end of the air inlet pipe (2) extends to the bottom of the limestone slurry inside the desulfurization tower (1). The top of the desulfurization tower (1) is fixedly connected to a connecting pipe (3). One end of the connecting pipe (3) is fixedly connected to a purification tower (4). Two sets of ultraviolet germicidal lamps (5) are symmetrically fixedly installed on the inner wall of the purification tower (4). Two sets of insertion slots (6) are opened on the top side of the ultraviolet germicidal lamps (5) of the purification tower (4). An installation component (7) is installed inside the two sets of installation components (7). An activated carbon filter (8) and a HEPA filter (9) for filtering flue gas are installed inside the two sets of installation components (7). An exhaust component (10) is installed on the top of the purification tower (4).

2. The flue gas desulfurization and purification device according to claim 1, characterized in that: The installation assembly (7) includes a support frame (71), which is fixedly installed on the inner wall of the purification tower (4), and the opening of the support frame (71) corresponds to the insertion slot (6). An installation frame (72) is movably inserted into the inside of the support frame (71). The HEPA filter (9) is installed on the top of the installation frame (72), and a sealing plate (73) is fixedly connected to one side of the installation frame (72). The sealing plate (73) is sealed to the insertion slot (6).

3. The flue gas desulfurization and purification device according to claim 1, characterized in that: The exhaust assembly (10) includes an exhaust pipe (101), which is fixedly installed on the top of the purification tower (4) and the interior of the exhaust pipe (101) is connected to the interior of the purification tower (4). An exhaust fan (102) is fixedly installed inside the exhaust pipe (101).

4. The flue gas desulfurization and purification device according to claim 3, characterized in that: The exhaust pipe (101) is fixedly installed with a protective net (103) above the exhaust fan (102), and a rainproof eave (104) is fixedly installed on the top of the exhaust pipe (101) by a bracket.

5. The flue gas desulfurization and purification device according to claim 1, characterized in that: One end of the intake pipe (2) is fixedly connected to a flow divider (14), and the outer side of the flow divider (14) is provided with a number of flow divider holes in a ring array.

6. The flue gas desulfurization and purification device according to claim 1, characterized in that: A demister (15) is fixedly installed on the top inner wall of the desulfurization tower (1).

7. The flue gas desulfurization and purification device according to claim 1, characterized in that: The desulfurization tower (1) is fixedly connected to one side of the liquid inlet pipe (11), and the bottom of the desulfurization tower (1) is fixedly connected to the liquid outlet pipe (12). Solenoid valves (13) are provided on the outer walls of the liquid inlet pipe (11) and the liquid outlet pipe (12).

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