CN216778454U

CN216778454U - Flue gas circulation desulfurization equipment

Info

Publication number: CN216778454U
Application number: CN202123226768.5U
Authority: CN
Inventors: 吴学远; 张泽; 许荣学
Original assignee: Shandong Haojie Environmental Engineering Co ltd
Current assignee: Shandong Haojie Environmental Engineering Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-06-21
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses flue gas circulating desulfurization equipment which comprises a desulfurization tower, wherein a chimney is fixedly arranged at the top of the desulfurization tower, a filter layer is fixedly arranged in the desulfurization tower and is positioned below the chimney, a plurality of criss-cross water pipes are fixedly arranged below the filter layer, a plurality of spray heads are arranged on the water pipes in the horizontal direction, an acid-base reaction tank is fixedly arranged at the bottom of the desulfurization tower, a flue gas conveying pipe is fixedly arranged on the left side of the middle part of the desulfurization tower and is positioned on the left side below the water pipes, a circulating smoke pipe is fixedly arranged below the filter layer and is positioned above the water pipes, a circulating fan is fixedly arranged in the circulating smoke pipe, a heat exchange bin is arranged on the left side of the flue gas conveying pipe, a smoke inlet is fixedly arranged at the upper right corner of the heat exchange bin, a special-shaped cooling pipe is fixedly arranged at the bottom of the smoke inlet, and an outlet connected to the flue gas conveying pipe is arranged at the upper right corner of the special-shaped cooling pipe. Compared with the prior art, the utility model has the advantages that: the flue gas circulating desulfurization equipment has a heat exchange function, can circularly perform desulfurization and has a good desulfurization effect.

Description

Flue gas circulation desulfurization equipment

Technical Field

The utility model relates to the field of flue gas purification, in particular to flue gas circulating desulfurization equipment.

Background

The flue gas desulfurization means that sulfur-containing compounds in the flue gas in the production process are removed, the flue gas emission standard is met, and the environmental pollution is reduced.

The system is characterized in that a desulfurizing tower is mostly used by flue gas desulfurization equipment, and a reaction area, a smoke inlet pipe, a spraying device and a demisting assembly are sequentially arranged from bottom to top; when the smoke is discharged, the smoke is sent into the tower body through the smoke inlet pipe, the spraying device sprays the desulfurization liquid downwards, the desulfurization liquid is contacted with the smoke, the desulfurization liquid and sulfur-containing compounds in the smoke are subjected to fusion reaction to generate new substances, the new substances fall into the storage reaction area, and the rest smoke is discharged after passing through the defogging assembly. However, after a large amount of flue gas enters the desulfurizing tower and is desulfurized by the sprayed desulfurizing agent, some particulate matters still exist in the residual flue gas, including substances containing sulfur, which form colloid floating in the air and stay in the desulfurizing tower after being filtered, so that the residual flue gas cannot be treated. And sulfur-containing flue gas is formed again after natural evaporation and is discharged from a chimney, so that the desulfurization effect is poor, and the atmospheric environment is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem and provide flue gas circulating desulfurization equipment which has a heat exchange function, can circularly perform desulfurization and has a good desulfurization effect.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a flue gas circulating desulfurization device comprises a desulfurization tower, a chimney is fixedly arranged at the top of the desulfurization tower, a filter layer is fixedly arranged in the desulfurizing tower below the chimney, a plurality of criss-cross water pipes are fixedly arranged below the filter layer, a plurality of spray headers are arranged on the water pipe along the horizontal direction, an acid-base reaction tank is fixedly arranged at the bottom of the desulfurization tower, the left side of the middle part of the desulfurizing tower is fixedly provided with a flue gas conveying pipe which is positioned on the left side below the water pipe, a circulating smoke pipe is fixedly arranged on the left side of the lower part of the filtering layer above the water pipe, a circulating fan is fixedly arranged in the circulating smoke pipe, the left side of the flue gas conveying pipe is provided with a heat exchange bin, the upper right corner of the heat exchange bin is fixedly provided with a flue gas inlet, go into the fixed special-shaped cooling tube that is equipped with in mouth bottom, special-shaped cooling tube upper right corner is equipped with exit linkage in flue gas conveyer pipe.

Further, the fixed oar liquid storehouse that is equipped with in desulfurizing tower right side, oar liquid storehouse bottom left side is equipped with oar liquid pipe and connects in the acid-base reaction tank right side, the fixed oar liquid pump that is equipped with in oar liquid pipe middle part.

Furthermore, the middle part of the flue gas conveying pipe is provided with an anti-backflow bulge, the bottom of the circulating smoke pipe is fixedly connected to the top of the anti-backflow bulge, and a butterfly valve is arranged at the joint of the circulating smoke pipe and the anti-backflow bulge.

Furthermore, a tap water filling port is arranged above the left side of the heat exchange bin, a hot water pipe is fixedly arranged below the tap water filling port, and a valve is fixedly arranged on the hot water pipe.

Further, the fixed oxidation reaction storehouse that is equipped with in the desulfurizing tower left side below the flue gas conveyer pipe, oxidation reaction storehouse left side is equipped with the oxygenation fan, oxidation reaction storehouse right side is equipped with solution pipe and connects in acid-base reaction pond left side, the fixed solution valve that is equipped with on the solution pipe.

Further, the special-shaped cooling pipe is positioned inside the heat exchange bin.

Compared with the prior art, the utility model has the advantages that: the circulating smoke tube and the fan are adopted, air staying below the filter layer is adsorbed, re-entering into the smoke conveying pipe is carried out desulfurization again, the backflow preventing protrusion is adopted, the backflow phenomenon caused by sudden increase of smoke inside the smoke conveying pipe is avoided, and the smoke is separated through circulation of the smoke, so that a better desulfurization effect is achieved. And the device adopts the heat exchange bin to exchange heat in the flue gas, avoids heat energy waste, accelerates the cooling of the flue gas, reduces the generation of vapor during desulfurization, further promotes the reaction, and further improves the working efficiency.

Drawings

FIG. 1 is a schematic diagram of the present invention.

As shown in the figure: 1. a desulfurizing tower; 2. a chimney; 3. a filter layer; 4. a water pipe; 5. a shower head; 6. a slurry tank; 7. a slurry pump; 8. an acid-base reaction tank; 9. a circulating smoke pipe; 10. a circulating fan; 11. a flue gas conveying pipe; 12. a butterfly valve; 13. an anti-backflow bulge; 14. a heat exchange chamber; 15. a smoke inlet; 16. a special-shaped cooling pipe; 17. a tap water filling port; 18. a hot water pipe; 19. an oxidation reaction bin; 20. a solution valve; 21. an oxygen increasing fan.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

In the description of the present invention, it should be noted that the term "connected" is to be understood broadly, for example, it may be a fixed connection, a detachable connection, or an integral connection, unless otherwise explicitly specified or limited, and those skilled in the art can understand the specific meaning of the above terms in the present invention in a specific case.

The present invention will be described in further detail with reference to the accompanying drawings.

Combine the attached drawing, a flue gas circulation sweetener, includes desulfurizing tower 1, 1 fixed chimney 2 that is equipped with in top of desulfurizing tower, 1 inside chimney 2 below that is located of desulfurizing tower is fixed to be equipped with filter layer 3 for the colloid in the filtered air. A plurality of criss-cross water pipes 4 are fixedly arranged below the filter layer 3, and a plurality of spray headers 5 are arranged on the water pipes 4 along the horizontal direction and used for spraying a desulfurizer. And an acid-base reaction tank 8 is fixedly arranged at the bottom of the desulfurizing tower 1 and is used for carrying out acid-base neutralization reaction to extract sulfur. Fixed oar liquid storehouse 6 that is equipped with in 1 right side of desulfurizing tower (the oar liquid that uses here is calcium carbonate solution, is alkaline), 6 bottom left sides in oar liquid storehouse are equipped with oar liquid pipe and connect in 8 right sides in acid-base reaction tank, the fixed oar liquid pump 7 that is equipped with in oar liquid pipe middle part. Used for adding slurry for desulfurization.

The fixed flue gas conveyer pipe 11 that is equipped with in 1 middle part left side of desulfurizing tower, flue gas conveyer pipe 11 is located 4 below left sides of water pipe, 3 below of filter layer are located 4 top left sides of water pipe and are fixed and be equipped with circulation tobacco pipe 9, the inside fixed circulating fan 10 that is equipped with of circulation tobacco pipe 9, flue gas conveyer pipe 11 middle part is equipped with anti-backflow arch 13, 9 bottom fixed connections of circulation tobacco pipe are in anti-backflow arch 13 tops, circulation tobacco pipe 9 is equipped with butterfly valve 12 with anti-backflow arch 13 junction. The method is used for circulation of flue gas, and further full desulfurization.

The left side of the flue gas conveying pipe 11 is provided with a heat exchange bin 14, the upper right corner of the heat exchange bin 14 is fixedly provided with a flue gas inlet 15, the bottom of the flue gas inlet 15 is fixedly provided with a special-shaped cooling pipe 16, and the special-shaped cooling pipe 16 is positioned inside the heat exchange bin 14. And an outlet connected to the flue gas conveying pipe 11 is arranged at the upper right corner of the special-shaped cooling pipe 16. A tap water filling port 17 is arranged above the left side of the heat exchange bin 14, a hot water pipe 18 is fixedly arranged below the tap water filling port 17, and a valve is fixedly arranged on the hot water pipe 18. The heat exchanger is used for heat exchange of flue gas, and avoids energy waste while rapidly cooling.

The fixed oxidation reaction storehouse 19 that is equipped with in 1 left side of desulfurizing tower is located to flue gas conveyer pipe 11 below, 19 left sides in oxidation reaction storehouse are equipped with

oxygenation fan

21, 19 right sides in oxidation reaction storehouse are equipped with solution union coupling in 8 left sides in acid-base reaction tank, the fixed solution valve 20 that is equipped with on the solution pipe. Sufficient oxidation-reduction reaction is performed to extract sulfur.

The working principle of the utility model is as follows: when the method is implemented specifically, the discharged flue gas enters the inside of the special-shaped cooling pipe 16 through the flue gas inlet 15, tap water is injected into the inside of the heat exchange bin 14 through the tap water injection port 17 to perform heat exchange between the flue gas and the tap water, the flue gas after being rapidly cooled enters the inside of the desulfurization tower 1 through the flue gas conveying pipe 11, the desulfurization solution in the water pipe 4 is sprayed out through the spray header 5 to mix oxysulfide in the flue gas to produce solid matters, the solid matters fall into the acid-base reaction tank 8 below, the residual flue gas is filtered through the filter layer 3 and then is discharged from a chimney, and the residual flue gas enters the flue gas conveying pipe 11 again through the circulating smoke pipe 9 to perform further desulfurization. The inside of the acid-base reaction tank 8 is provided with slurry extracted from the inside of the slurry bin 6. Generally, calcium carbonate solution is reacted to form sulfate and sulfite, and then the solution enters the oxidation reaction bin 19 to be fully oxidized, reduced and converted into sulfate, and then the sulfate is discharged.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A flue gas circulating desulfurization equipment is characterized in that: comprises a desulfurizing tower (1), wherein a chimney (2) is fixedly arranged at the top of the desulfurizing tower (1), a filter layer (3) is fixedly arranged below the chimney (2) inside the desulfurizing tower (1), a plurality of criss-cross water pipes (4) are fixedly arranged below the filter layer (3), a plurality of spray headers (5) are arranged on the water pipes (4) along the horizontal direction, an acid-base reaction tank (8) is fixedly arranged at the bottom of the desulfurizing tower (1), a flue gas conveying pipe (11) is fixedly arranged on the left side of the middle part of the desulfurizing tower (1), the flue gas conveying pipe (11) is arranged on the left side of the lower part of the water pipes (4), a circulating smoke pipe (9) is fixedly arranged on the left side of the upper part of the water pipes (4) below the filter layer (3), a circulating fan (10) is fixedly arranged inside the circulating smoke pipe (9), and a heat exchange bin (14) is arranged on the left side of the flue gas conveying pipe (11), the heat exchange bin (14) upper right corner is fixed and is equipped with into mouth (15), it is fixed and is equipped with special-shaped cooling tube (16) to go into mouth (15) bottom, special-shaped cooling tube (16) upper right corner is equipped with exit linkage in flue gas conveyer pipe (11).

2. The flue gas desulfurization apparatus according to claim 1, characterized in that: desulfurizing tower (1) right side is fixed and is equipped with oar liquid storehouse (6), oar liquid storehouse (6) bottom left side is equipped with oar liquid pipe and connects in acid-base reaction tank (8) right side, oar liquid pipe middle part is fixed and is equipped with oar liquid pump (7).

3. The flue gas desulfurization apparatus according to claim 1, characterized in that: the middle part of the flue gas conveying pipe (11) is provided with an anti-backflow bulge (13), the bottom of the circulating smoke pipe (9) is fixedly connected to the top of the anti-backflow bulge (13), and a butterfly valve (12) is arranged at the joint of the circulating smoke pipe (9) and the anti-backflow bulge (13).

4. The flue gas desulfurization apparatus according to claim 1, characterized in that: a tap water filling port (17) is arranged above the left side of the heat exchange bin (14), a hot water pipe (18) is fixedly arranged below the tap water filling port (17), and a valve is fixedly arranged on the hot water pipe (18).

5. The flue gas desulfurization apparatus according to claim 1, characterized in that: flue gas conveyer pipe (11) below is located that desulfurizing tower (1) left side is fixed and is equipped with oxidation reaction storehouse (19), oxidation reaction storehouse (19) left side is equipped with oxygen-increasing fan (21), oxidation reaction storehouse (19) right side is equipped with solution pipe connection in acid-base reaction tank (8) left side, the last fixed solution valve (20) that is equipped with of solution pipe.

6. The flue gas desulfurization apparatus according to claim 1, characterized in that: the special-shaped cooling pipe (16) is positioned inside the heat exchange bin (14).