Efficient desulfurization and dust removal absorption system with circulating filtration structure

By adding a fixed frame and filter screen at the bottom of the collection tank, combined with a slurry circulation pump and a tube bundle demister with heat dissipation fins, the problems of nozzle clogging and flue gas impurity removal during the recycling of desulfurizing agent slurry were solved, achieving efficient desulfurization and dust removal, and reducing "chimney rain" and excessive dust.

CN223800336UActive Publication Date: 2026-01-16ZHONGRUI ENG DESIGN INST CO LTD
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Patent Information

Application Number
CN202423258164.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2026-01-16
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

In existing technologies, desulfurizing agent slurry is prone to nozzle blockage when recycled, which reduces the efficiency of the integrated absorption system. At the same time, impurities in the flue gas are not effectively removed, resulting in "chimney rain" and excessive dust at the outlet.

Method used

A fixed frame is added to the bottom of the collection tank, a filter screen is installed and fixed by a limiting plate, and combined with a slurry circulation pump and a tube bundle demister with heat dissipation fins, the slurry of the desulfurizing agent is filtered and the flue gas is dusted and demisted, so as to avoid nozzle blockage and reduce the moisture content of the flue gas.

Benefits of technology

It effectively removes impurities from the desulfurizing agent slurry, avoids nozzle clogging, improves the recycling efficiency of the absorption system, reduces "chimney rain" and excessive dust, and enhances the dust removal effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an efficient desulfurization dust removal absorption system with a circulating filtration structure, and relates to the technical field of integrated absorption systems, the efficient desulfurization dust removal absorption system comprises an absorption tower, a collection pool, a flue gas exhaust port, a flue gas inlet and a slurry circulating pump, the collection pool is arranged at the bottom end of the absorption tower, the flue gas exhaust port is arranged at the top end of the absorption tower, and the slurry circulating pump is arranged in the collection pool. A flue gas inlet is formed in one side of the absorption tower, and the absorption tower is far away from the flue gas inlet. According to the efficient desulfurization and dust removal absorption system with the circulating filtration structure, a fixing frame is additionally arranged at the bottom end of a collection pool, then a filter screen is connected with a limiting block arranged at the bottom end of the collection pool in an inserted mode, and the filter screen is limited through a limiting plate, so that the installed filter screen can remove impurities attached to the interior of desulfurizer slurry; therefore, the spray head is prevented from being blocked after repeated use, and the integrated absorption system can have a better cyclic filtering effect when the desulfurizer slurry is recycled.
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Description

TECHNICAL FIELD

[0001] The utility model relates to integrated absorption system technical field, concretely is a kind of high-efficiency desulfurization dust absorption system with circulating filtration structure. BACKGROUND

[0002] In wet desulfurization, flue gas enters from the middle of absorption tower, desulfurizer slurry is atomized and sprayed from the upper part of absorption tower through nozzle, and is in countercurrent contact with flue gas, CaSO3·1 / 2H2O and CO2 are generated in the tower, and O2, H2O falling into the slurry pool of absorption tower are oxidized to obtain byproduct CaSO4·2H2O.

[0003] Most of the desulfurizer slurry is atomized and sprayed from the upper part of the absorption tower through the nozzle to contact with the flue gas, which simultaneously adsorbs the impurities in the flue gas, causing the impurities in the flue gas to fall into the collection pool at the bottom, which causes the internal adsorbed impurities to block the nozzle when the desulfurizer slurry is circulated and sprayed, thereby reducing the contact with the flue gas and reducing the efficiency of the integrated absorption system in use. SUMMARY

[0004] The utility model discloses a kind of high-efficiency desulfurization dust absorption systems with circulating filtration structure, to solve the problem that integrated absorption system is not easy to filter recycled desulfurizer slurry proposed in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high-efficiency desulfurization dust absorption systems with circulating filtration structure, including absorption tower, collection pool, flue gas outlet, flue gas inlet and slurry circulating pump, the bottom of the absorption tower is provided with collection pool, the top of the absorption tower is provided with flue gas outlet, one side of the absorption tower is provided with flue gas inlet, the absorption tower is away from flue gas inlet, one side of the absorption tower away from flue gas inlet is provided with slurry circulating pump, and extraction pipe is connected between the slurry circulating pump and collection pool.

[0006] Preferably, one end of the slurry circulating pump is provided with a connecting pipe connected to the absorption tower, and the connecting pipe is provided with uniformly distributed nozzles on the side away from the slurry circulating pump.

[0007] Preferably, the collection pool is provided with a fixed frame on the side close to the extraction pipe inside, a filter screen is provided on one side of the fixed frame, and a through slot is formed on the side of the fixed frame close to the filter screen.

[0008] Preferably, a limiting block is welded and connected on the side of the bottom of the collection pool close to the fixed frame, a rotating hand wheel is provided on the top of the fixed frame, and a rotating rod is connected on one side of the rotating hand wheel.

[0009] Preferably, the surface of the rotating rod is provided with a rotating gear, and one side of the rotating gear is engaged with a limiting plate.

[0010] Preferably, a cooling fan is provided at the end of the absorption tower away from the slurry circulation pump, a cooler is connected to one side of the cooling fan via a pipe, a cooling water return pipe is connected to one side of the cooler, and a cooling water inlet pipe is provided on the side of the cooler away from the cooling water return pipe.

[0011] Preferably, the top of the inside of the absorption tower is provided with uniformly distributed tube bundle demisters with heat dissipation fins, and both ends of the tube bundle demisters with heat dissipation fins are provided with sealing plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure can remove impurities attached to the inside of the desulfurizing agent slurry by adding a fixed frame at the bottom of the collection tank, then inserting the filter screen into the limiting block set at the bottom of the collection tank, and restricting it with a limiting plate. This prevents the nozzle from being blocked after repeated use, and enables the integrated absorption system to have a better circulating filtration effect when the desulfurizing agent slurry is recycled.

[0013] 1. This high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure addresses the issue of nozzle clogging caused by the repeated use of the desulfurizing agent slurry during integrated absorption system operation. This can be mitigated by adding a fixed frame at the bottom of the collection tank, then inserting the filter screen into the limiting block at the bottom of the collection tank. This allows the filter screen to be installed on one side of the fixed frame. Rotating the handwheel then drives a rotating gear via a rotating rod, which in turn tightens the filter screen via the limiting plate, ensuring stable installation on one side of the fixed frame. The limiting plate also features a guide rod for smooth movement, allowing the installed filter screen to remove impurities adhering to the desulfurizing agent slurry. This prevents nozzle clogging after repeated use, resulting in a better circulating filtration effect when the integrated absorption system recycles the desulfurizing agent slurry.

[0014] 2、the high efficiency desulfurization and dust removal absorption system with circulating filter structure, when the integrated absorption system is after spraying and dust removal and demisting, flue gas still carries liquid drops and slurry from the chimney and is discharged, thereby causing "chimney rain" and outlet dust exceeding standard phenomenon, so that the integrated absorption system is more inconvenient when using, the integrated absorption system can be used, slurry is atomized and sprayed through the nozzle by the slurry circulating pump, and then reacts with SO2 in flue gas to play a desulfurization role, and then the flue gas after cooling enters the pipe bundle demister with heat dissipation fins to carry out dust removal and demisting, the flue gas after dust removal and demisting enters the flue gas discharge port at the top of the absorption tower and is discharged, and the cooling fan sends the air in the environment into the cooler, so that the circulating water in the cooler can be cooled, the pipe bundle demister with heat dissipation fins is divided into two parts, the demisting area is divided into the pipe inside the demister pipe and the shell outside the pipe, the air after cooling in the shell exchanges heat with hot flue gas in the pipe bundle demister with heat dissipation fins, the saturated flue gas after cooling condenses water, the condensed liquid drops are collected, dust removal and demisting are facilitated, the moisture content of flue gas is reduced, the effect of reducing "chimney rain" is achieved, the dust removal efficiency is improved, and the shell of the pipe bundle demister with heat dissipation fins is made of corrosion-resistant alloy material, and the heat dissipation fins made of stainless steel are welded on the shell to increase the heat exchange effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view cut structure schematic view of the utility model;

[0016] Figure 2 It is a top view structure schematic view of the fixed frame of the utility model;

[0017] Figure 3 It is a top view cut structure schematic view of the fixed frame of the utility model;

[0018] Figure 4 It is a front view cut structure schematic view of the fixed frame of the utility model;

[0019] Figure 5 It is a front view structure schematic view of the pipe bundle demister with heat dissipation fins of the utility model.

[0020] In the drawing: 1, absorption tower; 2, collection pool; 3, flue gas discharge port; 4, flue gas inlet; 5, slurry circulating pump; 6, extraction pipe; 7, connecting pipe; 8, nozzle; 9, fixed frame; 10, filter screen; 11, through slot; 12, limiting block; 13, rotating hand wheel; 14, rotating rod; 15, rotating gear; 16, limiting plate; 17, cooling fan; 18, cooler; 19, cooling water return pipe; 20, cooling water inlet pipe; 21, pipe bundle demister with heat dissipation fins; 22, sealing plate. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0022] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of high-efficiency desulfurization and dust removal absorption system with circulating filtration structure, including absorption tower 1, collection pool 2, flue gas outlet 3, flue gas inlet 4 and slurry circulating pump 5, the bottom end of the absorption tower 1 is provided with collection pool 2, the top end of the absorption tower 1 is provided with flue gas outlet 3, one side of the absorption tower 1 is provided with flue gas inlet 4, the absorption tower 1 is away from flue gas inlet 4, one side of the absorption tower 1 away from flue gas inlet 4 is provided with slurry circulating pump 5, extraction pipe 6 is connected between the slurry circulating pump 5 and collection pool 2, one end of the slurry circulating pump 5 is provided with connecting pipe 7 connected with absorption tower 1, the side of the connecting pipe 7 away from slurry circulating pump 5 is provided with evenly distributed spray head 8, the inside of the collection pool 2 is close to one side of extraction pipe 6 and is provided with fixed frame 9, one side of the fixed frame 9 is provided with filter screen 10, the side of the fixed frame 9 close to filter screen 10 is provided with through slot 11, the bottom end of the collection pool 2 is close to one side of fixed frame 9 and is provided with welded connection limit block 12, the top end of the fixed frame 9 is provided with rotating hand wheel 13, one side of the rotating hand wheel 13 is connected with rotating rod 14, the surface of the rotating rod 14 is provided with rotating gear 15, one side of the rotating gear 15 is engagedly connected with limit plate 16.

[0023] Specific implementation,

[0024] Please refer to Figures 1-4It can be known that when the integrated absorption system is in use, the desulfurizer slurry needs to be reused, which can easily cause the nozzle to be blocked by the impurities adsorbed inside. The fixed frame 9 can be additionally arranged at the bottom end of the collecting pool 2. Then, the filter screen 10 is inserted with the limiting block 12 arranged at the bottom end of the collecting pool 2, so that the filter screen 10 can be installed on one side of the fixed frame 9. Then, the rotating hand wheel 13 is rotated, so that the rotating hand wheel 13 can rotate the connecting rotating rod 14 when rotating, so that the rotating rod 14 can rotate the rotating gear 15 connected at the bottom end when rotating, so that the rotating gear 15 can move the limiting plate 16 connected on one side when rotating, so that the limiting plate 16 can be tensioned after moving to the filter screen 10, so that the filter screen 10 can be stably installed on one side of the fixed frame 9. The limiting plate 16 is internally provided with a guide rod, so that the limiting plate 16 can move more smoothly when moving, so that the installed filter screen 10 can remove the impurities attached inside the desulfurizer slurry, thereby avoiding the nozzle 8 from being blocked after being reused, so that the integrated absorption system can have a better recycling filtering effect when the desulfurizer slurry is recycled.

[0025] The end of the absorption tower 1 away from the slurry circulating pump 5 is provided with a cooling fan 17. One side of the cooling fan 17 is connected with a cooler 18 through a pipeline. One side of the cooler 18 is connected with a cooling water return pipe 19. The side of the cooler 18 away from the cooling water return pipe 19 is provided with a cooling water inlet pipe 20. The top end inside the absorption tower 1 is provided with a uniformly distributed tube bundle demister 21 with heat dissipation fins. Both ends of the tube bundle demister 21 with heat dissipation fins are provided with sealing plates 22.

[0026] In specific implementation,

[0027] Referring to Figure 1 and Figure 5It can be known that when the integrated absorption system passes through the spraying and dust and mist removal, the flue gas still carries liquid drops and slurry to be discharged from the chimney, thereby causing the "chimney rain" and the outlet dust exceeding the standard phenomenon, so that the integrated absorption system is more inconvenient when in use, and the slurry circulating pump 5 can be used to atomize and spray the desulfurizing agent slurry through the nozzle 8 to react with SO2 in the flue gas to play a desulfurizing role when the integrated absorption system is running, and then the cooled flue gas enters the tube bundle demister 21 with heat dissipation fins to be dust and mist removed, the flue gas after the dust and mist removal enters the flue gas outlet 3 at the top of the absorption tower 1 to be discharged, and the cooling fan 17 sends the air in the environment into the cooler 18 to cool the circulating water in the cooler 18, and the tube bundle demister 21 with heat dissipation fins is divided into two parts of the demister tube and the shell by the upper and lower sealing plates 22, the cooled air in the shell exchanges heat with the hot flue gas in the tube bundle demister 21 with heat dissipation fins to be cooled, the saturated flue gas after the cooling is condensed to collect water, the collected liquid drops are beneficial to the dust and mist removal, the moisture content of the flue gas is reduced, the effect of reducing the "chimney rain" is achieved, the dust removal efficiency is improved, and the shell of the tube bundle demister 21 with heat dissipation fins is made of corrosion-resistant alloy material, and the heat dissipation fins made of stainless steel are welded on the shell to increase the heat exchange effect.

[0028] In summary, in the wet desulfurization, the flue gas enters from the middle of the absorption tower 1, the desulfurizing agent slurry is atomized and sprayed from the nozzle at the top of the absorption tower 1 to be in countercurrent contact with the flue gas, and since the desulfurizing agent slurry needs to be reused, the impurities adsorbed inside are easy to cause the nozzle to be blocked, the fixed frame 9 is additionally arranged at the bottom end of the collection tank 2, then the filter screen 10 is inserted with the limiting block 12 arranged at the bottom end of the collection tank 2, and the limiting plate 16 is used to limit the filter screen 10, so that the installed filter screen 10 can remove the impurities attached inside the desulfurizing agent slurry, thereby avoiding the nozzle from being blocked after the reuse, and the integrated absorption system can have a good circulating filtration effect when the desulfurizing agent slurry is reused, and the contents not described in detail in the description belong to the prior art known to the person skilled in the art.

[0029] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure, comprising an absorption tower (1), a collection pool (2), a flue gas outlet (3), a flue gas inlet (4) and a slurry circulating pump (5), characterized in that: the bottom end of the absorption tower (1) is provided with the collection pool (2), the top end of the absorption tower (1) is provided with the flue gas outlet (3), one side of the absorption tower (1) is provided with the flue gas inlet (4), the absorption tower (1) is away from the flue gas inlet (4), one side of the absorption tower (1) away from the flue gas inlet (4) is provided with the slurry circulating pump (5), the slurry circulating pump (5) is connected with the collection pool (2) through the extraction pipe (6), one end of the absorption tower (1) away from the slurry circulating pump (5) is provided with the cooling fan (17), one side of the cooling fan (17) is connected with the cooler (18) through the pipeline, one side of the cooler (18) is connected with the cooling water return pipe (19), one side of the cooler (18) away from the cooling water return pipe (19) is provided with the cooling water inlet pipe (20), the top end of the inside of the absorption tower (1) is provided with the uniformly distributed tube bundle demister (21) with heat dissipation fins, both ends of the tube bundle demister (21) with heat dissipation fins are provided with the sealing plate (22).

2. The high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure according to claim 1, characterized in that: One end of the slurry circulating pump (5) is provided with the connecting pipe (7) connected with the absorption tower (1), one side of the connecting pipe (7) away from the slurry circulating pump (5) is provided with the uniformly distributed spray head (8).

3. The high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure according to claim 1, characterized in that: One side of the inside of the collection pool (2) close to the extraction pipe (6) is provided with the fixed frame (9), one side of the fixed frame (9) is provided with the filter screen (10), one side of the fixed frame (9) close to the filter screen (10) is provided with the through slot (11).

4. The high-efficiency desulfurization and dust removal absorption system with a circulating filtration structure according to claim 3, characterized in that: One side of the bottom end of the collection pool (2) close to the fixed frame (9) is provided with the welded limiting block (12), the top end of the fixed frame (9) is provided with the rotating hand wheel (13), one side of the rotating hand wheel (13) is connected with the rotating rod (14).

5. The high efficiency desulfurization and dust removal absorption system with circulating filtration structure according to claim 4, characterized in that: The surface of the rotating rod (14) is provided with the rotating gear (15), one side of the rotating gear (15) is engaged with the limiting plate (16).