CN218962194U

CN218962194U - Boiler flue gas treatment device

Info

Publication number: CN218962194U
Application number: CN202223106480.9U
Authority: CN
Inventors: 祁波
Original assignee: Shandong Capital Installation Engineering Co ltd
Current assignee: Shandong Ducheng Construction Engineering Group Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-05
Anticipated expiration: 2032-11-22

Abstract

The utility model provides a boiler flue gas processing apparatus, includes exhaust pipe, still includes adsorption equipment, and adsorption equipment includes active carbon filling layer, fixed section of thick bamboo and two non-woven fabrics layers, and two non-woven fabrics layers are fixed connection respectively in fixed section of thick bamboo both ends, and active carbon filling layer just is located between two non-woven fabrics layers in the fixed section of thick bamboo, and fixed section of thick bamboo both ends all communicate with exhaust pipe. Flue gas generated by burning fossil fuels such as coal in a boiler is introduced into an adsorption mechanism through a smoke exhaust pipeline, a fixing cylinder in the adsorption mechanism plays a role in fixing and supporting, a non-woven fabric layer plays a role in fixing an active carbon filling layer and plays a certain role in filtering solid particles in the flue gas, and in the process of passing the flue gas through the active carbon filling layer, the active carbon efficiently adsorbs and removes SO2, nitrogen oxides, smoke particles, heavy metals, volatile organic compounds and other trace elements, SO that the flue gas treatment capacity of the flue gas treatment device is improved.

Description

Boiler flue gas treatment device

Technical Field

The application relates to the technical equipment field of boiler flue gas treatment, in particular to a boiler flue gas treatment device.

Background

The flue gas generated by the combustion of the boiler is a mixture of gas and smoke dust and is a main cause for polluting the atmosphere of residential areas. The components of the flue gas are complex and include water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides, etc., and the smoke dust includes ash, coal particles, oil droplets, pyrolysis products, etc. of the fuel.

The related art can refer to the chinese patent publication No. CN205532789U and discloses a flue gas treatment device, including closed barrel, the bottom of closed barrel is provided with the leakage fluid dram, and the lower extreme of closed barrel is provided with the intake pipe, and the upper end of closed barrel is provided with the outlet duct, and the inside baffle that is provided with of closed barrel, the lower extreme of the inside baffle of closed barrel is provided with the feed liquor pipe that is used for letting in spray liquor, is provided with atomizer on the feed liquor pipe, wears to be equipped with the air duct on the baffle, and the end of giving vent to anger of air duct is connected with the beginning of filter core, and the filter core is provided with sandwich structure, and sandwich structure intussuseption is filled with calcium oxide. The primary filtration is carried out through the spray liquid, the spray liquid absorbs harmful gases in the flue gas and enables solid particles in the flue gas to be settled, and the flue gas treated by the spray liquid is subjected to secondary filtration of the filter element.

Aiming at the related technology, the double alkali liquor prepared by sodium hydroxide and soda lime is used as spray liquor for treating the flue gas, the sulfide treatment capability is limited, the treatment effect on components such as heavy metals is poor, and the flue gas treatment capability is low.

Disclosure of Invention

In order to improve the flue gas treatment capacity of the flue gas treatment device, the application provides a boiler flue gas treatment device.

The application provides a boiler flue gas treatment device, adopts following technical scheme:

the utility model provides a boiler flue gas processing apparatus, includes exhaust pipe, still includes adsorption equipment, adsorption equipment includes active carbon filling layer, fixed section of thick bamboo and two non-woven fabrics layers, two non-woven fabrics layers fixed connection is in fixed section of thick bamboo both ends respectively, active carbon filling layer is located fixed section of thick bamboo and is located between two non-woven fabrics layers, fixed section of thick bamboo both ends all communicate with exhaust pipe.

Through adopting above-mentioned technical scheme, the flue gas that fossil fuel such as boiler burning coal produced lets in adsorption equipment through exhaust flue, fixed section of thick bamboo plays fixed and supporting role in the adsorption equipment, and the active carbon filling layer fills and is located between two non-woven fabrics layers, and the non-woven fabrics layer plays fixed active carbon filling layer effect and plays certain filtration to the solid particulate matter in the flue gas, and the flue gas passes through active carbon filling layer in-process, and active carbon adsorbs the removal SO2, nitrogen oxide, smoke and dust particle, heavy metal, volatile organic compounds and other microelement effectively, has improved flue gas processing apparatus's flue gas throughput.

Optionally, flange plates are fixedly connected to two ends of the fixed cylinder, and the smoke exhaust pipeline is connected with the fixed cylinder through the flange plates.

Through adopting above-mentioned technical scheme, fixed cylinder both ends and exhaust pipe pass through the ring flange to it is fixed to adopt the bolt. The flange connection is firm and reliable, and the integral air tightness of the device can be ensured under a high-temperature environment. The adsorption mechanism needs to be replaced with the activated carbon in the activated carbon filling layer after being used for a period of time, and the detachable flange connection mode can facilitate the disassembly and the installation of the adsorption mechanism so as to replace the activated carbon.

Optionally, the adsorption mechanism has two sets, exhaust pipe divide into the main pipe of discharging fume and the branch pipe of discharging fume, two the branch pipe of discharging fume connects in parallel and is linked together with the main pipe of discharging fume, all link with adsorption mechanism on the branch pipe of discharging fume, the branch pipe of discharging fume advances the cigarette end and is equipped with the valve, the branch pipe of discharging fume goes out the cigarette end and is equipped with the check valve.

Through adopting above-mentioned technical scheme, set up two sets of adsorption equipment, can adopt the mode of using of a main one-tenth, open the valve that one side adsorption equipment corresponds and close the valve that the opposite side adsorption equipment corresponds in the use, the flue gas that the burning produced normally passes from one side adsorption equipment. And the check valve is used for preventing the flue gas from flowing back, the active carbon filling layer in use needs to be replaced after a period of time, the valve on one side of the adsorption mechanism in use is closed, the valve on the other side is opened, the adsorption mechanism on the other side starts to carry out flue gas treatment, the active carbon can be replaced under the condition that the operation of the boiler is not required to be stopped, and the influence of the maintenance of the flue gas treatment device on the normal operation of the boiler is reduced.

Optionally, the fume outlet end of the fume exhaust pipe is provided with a filter water tank, an air inlet is formed in the side surface of the filter water tank near the bottom end, an air outlet is formed in the side surface of the filter water tank near the top end, and the fume exhaust pipe is communicated with the air inlet of the filter water tank.

Through adopting above-mentioned technical scheme, the flue gas that boiler burning produced has all been cleared away after adsorption unit handles most pollutant and harmful gas, still has a small amount of residue, fills water and lets in the filter tank with the gas inlet of flue gas from the bottom, and the flue gas is finally discharged from the venthole on top, and the flue gas fully contacts with water in the filter tank, and residual pollutant and harmful gas are by further processing, have improved flue gas processing apparatus's flue gas throughput.

Optionally, the smoke exhaust pipeline is provided with a smoke exhaust fan.

Through adopting above-mentioned technical scheme, the air inlet of flue gas from the filter tank bottom lets in the filter tank, and the water in the filter tank is to the air inlet of bottom pressure differential generation certain under the action of gravity, can influence the speed that the flue gas got into the filter tank, and then influences whole flue gas processing apparatus's treatment effeciency. The smoke exhaust fan can generate forward pressure with the same direction as the motion direction of the smoke to ensure the overall conveying speed of the smoke, thereby ensuring the treatment efficiency of the whole smoke treatment device.

Optionally, the air outlet is communicated with a spiral smoke exhaust pipeline, and one end, far away from the air outlet, of the spiral smoke exhaust pipeline is spirally arranged upwards.

Through adopting above-mentioned technical scheme, the flue gas temperature that boiler burning produced is higher, lets in the aquatic and can produce certain vapor, and vapor can cause the waste of water resource along with the direct emission of flue gas, and spiral exhaust duct is upwards set up along keeping away from gas outlet direction spiral, and vapor fully contacts and condenses into liquid water with spiral exhaust duct in the emission in-process, flows back to the filter tank under the action of gravity, has practiced thrift the water resource.

Optionally, a plurality of one-to-one's trompils have been seted up respectively at the filtration water tank both ends, correspond all be connected with thin wall steel pipe between the trompil, filtration water tank both ends all are connected with the baotou, the trompil all is located baotou inboard, and the filtration water tank bottom secondary water inlet has been seted up to baotou, and the filtration water tank top secondary delivery port has been seted up to baotou.

Through adopting above-mentioned technical scheme, the flue gas temperature that boiler burning produced is higher, and the temperature is higher equally after the water in the filter tank fully contacts with high temperature flue gas, if let its natural heat dissipation, can cause certain waste to the energy, and domestic water gets into in the pipe head through the secondary water inlet and passes from the secondary delivery port after the thin wall steel pipe from bottom to top through the trompil and discharges, and domestic water carries out abundant heat exchange with the high temperature water in the filter tank during, carries out recycle to partial heat. The energy utilization rate is improved.

Optionally, a check valve is arranged at one end of the smoke exhaust pipeline close to the air inlet.

Through adopting above-mentioned technical scheme, water is equipped with in the filtration water tank, and water can flow back along exhaust pipe under the action of gravity, and the check valve has one-way trafficability characteristic, can prevent that water from flowing into exhaust pipe.

In summary, the application comprises the following beneficial technical effects of at least one boiler flue gas treatment device:

1. in the process that the flue gas passes through the activated carbon filling layer, the activated carbon efficiently adsorbs and removes SO2, nitrogen oxides, smoke particles, heavy metals, volatile organic compounds and other trace elements, SO that the flue gas treatment capacity of the flue gas treatment device is improved;

2. the adsorption mechanism needs to be replaced for the activated carbon in the activated carbon filling layer after being used for a period of time, and the detachable flange connection mode can facilitate the disassembly and the installation of the adsorption mechanism so as to replace the activated carbon;

3. the two sets of adsorption mechanisms are arranged, a main and standby use mode is adopted, the active carbon filling layer in use needs to be replaced after a period of time, the valve on one side of the adsorption mechanism in use is closed, the valve on the other side of the adsorption mechanism is opened, the adsorption mechanism on the other side starts to perform smoke treatment work, the active carbon can be replaced under the condition that the operation of the boiler does not need to be stopped, and the influence of the maintenance of the smoke treatment device on the normal operation of the boiler is reduced.

Drawings

Fig. 1 is a schematic view of the internal structure of a boiler flue gas treatment device.

Fig. 2 is an enlarged schematic view of the portion a in fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Reference numerals illustrate: 1. a smoke exhaust duct; 2. an adsorption mechanism; 3. a non-woven fabric layer; 4. an activated carbon filling layer; 5. a flange plate; 6. a fixed cylinder; 7. a main smoke exhaust pipe; 8. a smoke exhaust branch pipe; 9. a three-way pipe; 10. a valve; 11. a check valve; 12. a filter water tank; 13. an air inlet; 14. an air outlet; 15. a smoke exhaust fan; 16. a spiral smoke exhaust duct; 17. opening holes; 18. thin-walled steel pipe; 19. a packet head; 20. a secondary water inlet; 21. a secondary water outlet; 22. a boiler; 23. a water tank flange; 24. and a ferrule flange plate.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a boiler flue gas treatment device.

Referring to fig. 1 and 2, a boiler flue gas treatment device comprises a plurality of flue gas exhaust pipes 1 and two sets of adsorption mechanisms 2. The adsorption mechanism 2 comprises a fixed cylinder 6, a non-woven fabric layer 3 and an activated carbon filling layer 4, wherein the fixed cylinder 6 is an iron hollow cylinder, flange plates 5 are fixedly connected to two ends of the fixed cylinder 6, the two non-woven fabric layers 3 are respectively and fixedly connected to two ends of the inner wall of the fixed cylinder 6, and the activated carbon is filled between the two non-woven fabric layers 3 to form the activated carbon filling layer 4.

Referring to fig. 1, the smoke exhaust duct 1 is divided into a main smoke exhaust duct 7 and branch smoke exhaust ducts 8, the diameter of the branch smoke exhaust duct 8 is the same as that of the fixed cylinder 6, the diameter of the main smoke exhaust duct 7 is also the same as that of the fixed cylinder 6, and the main smoke exhaust duct 7 and the two branch smoke exhaust ducts 8 are communicated with each other through a three-way duct 9. The main flue gas pipe 7 comprises a flue gas inlet end communicated with the boiler 22 and a flue gas outlet end far away from the boiler 22, and the flue gas exhaust branch pipe 8 is connected between the flue gas inlet end and the flue gas outlet end. The smoke inlet end of the smoke exhaust main pipe 7 is provided with a smoke exhaust fan 15 for exhausting smoke generated by the combustion of the boiler 22.

Referring to fig. 1 and 2, one end of the two sections of the smoke discharging branch pipes 8 far away from the three-way pipeline 9 is fixedly connected with the flange plates 5 respectively, and the flange plates 5 on the two sections of the smoke discharging branch pipes 8 are connected with the flange plates 5 on the two fixing cylinders 6 through bolts respectively.

Referring to fig. 1 and 2, a valve 10 is installed on the exhaust branch pipe 8 for controlling the on-off of the corresponding exhaust branch pipe 8. The end of the smoke exhaust branch pipe 8 close to the smoke inlet end of the smoke exhaust main pipe 7 is provided with a check valve 11 for preventing the gas in the corresponding smoke exhaust branch pipe 8 from flowing backwards.

Referring to fig. 1 and 3, a cylindrical filter water tank 12 is arranged vertically on one side of the adsorption mechanism 2 far away from the boiler 22, water is arranged in the filter water tank 12, an air inlet 13 is formed in the side surface of the filter water tank 12 near the bottom end, an air outlet 14 is formed in one side of the opposite side near the top end, the apertures of the air inlet 13 and the air outlet 14 are the same as those of the main smoke discharging pipe 7, a flange plate 5 is arranged on the same aperture as the main smoke discharging pipe 7, the smoke outlet end of the main smoke discharging pipe 7 of the air inlet 13 is communicated with a bolt through the flange plate 5, and the air outlet 14 is connected with a spiral smoke discharging pipeline 161 through the flange plate 5 and the bolt. A check valve 11 is arranged on the main smoke discharging pipe 7 near the air inlet 13 to prevent water from flowing into the smoke discharging pipe 1.

Referring to fig. 1, the spiral smoke exhaust duct 161 has the same diameter as the main smoke exhaust duct 7, and the spiral smoke exhaust duct 161 is a duct made of iron and spirally extending upward in a spiral manner, and is used for discharging the treated smoke into the atmosphere and condensing and recovering water vapor in the smoke.

Referring to fig. 1 and 3, the top and bottom ends of the filtering tank 12 are provided with a plurality of openings 17 in the same number and one-to-one correspondence, and each pair of openings 17 has the same position in the vertical direction. A stainless steel thin-wall steel pipe 18 with the caliber identical to that of the open holes 17 is fixedly connected between each pair of the open holes 17, and the thin-wall steel pipe 18 is communicated with the outside at two ends of the filtering water tank 12.

Referring to fig. 3, two ends of the filtering water tank 12 are fixedly connected with water tank flanges 23, two ends of the filtering water tank 12 are respectively provided with a wrapping head 19, the wrapping heads 19 are of steel structures with approximately hemispherical shapes, one side, close to the filtering water tank 12, of each wrapping head 19 is fixedly connected with a wrapping head flange 24, and the wrapping head flanges 24 are connected with the water tank flanges 23 through bolts. The header 19 at the bottom end of the filtering water tank 12 is provided with a secondary water inlet 20 for introducing low-temperature domestic water, and the header 19 at the top end of the filtering water tank 12 is provided with a secondary water outlet 21 for outputting the domestic water with heat exchange completed.

The implementation principle of the boiler flue gas treatment device in the embodiment of the application is as follows: the flue gas generated by the combustion of the boiler 22 is conveyed to the adsorption mechanism 2 through the main flue gas pipe 7, the three-way pipeline 9 and the flue gas branch pipe 8, at the moment, one of the two valves 10 is closed and the other valve 10 is opened, the adsorption mechanism 2 on one side of the valve 10 is opened to treat the flue gas from the boiler 22, when the activated carbon of the activated carbon filling layer 4 needs to be replaced after the adsorption mechanism 2 is used for a period of time, the valve 10 on the corresponding side is closed, the valve 10 on the other side is opened, the adsorption mechanism 2 corresponding to the valve 10 on the other side immediately starts to treat the flue gas from the boiler 22, and the flue gas treatment work of the boiler 22 can be continued when the activated carbon is replaced. The flue gas treated by the adsorption mechanism 2 is introduced into the filter water tank 12 from the air inlet 13 through the smoke exhaust branch pipe 8 and the smoke exhaust main pipe 7, the flue gas is fully contacted with water in the filter water tank 12 and further treats pollutants and toxic substances in the flue gas, the treated flue gas is introduced into the spiral smoke exhaust pipeline 161 from the air outlet 14 and is discharged, and water vapor in the flue gas is condensed in the spiral smoke exhaust pipeline 161 and flows back to the filter water tank 12. The low-temperature domestic water is introduced into the thin-wall steel pipe 18 from the secondary water inlet 20, and is subjected to heat exchange with the high-temperature water in the filtering water tank 12, and the domestic water with the temperature increased after the heat exchange is finished is discharged from the secondary water outlet pipeline and is used for daily life water.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a boiler flue gas processing apparatus, includes exhaust pipe (1), its characterized in that: still include adsorption equipment (2), adsorption equipment (2) are including active carbon filling layer (4), fixed section of thick bamboo (6) and two non-woven fabrics layer (3), two non-woven fabrics layer (3) are fixed connection respectively in fixed section of thick bamboo (6) both ends, active carbon filling layer (4) are located fixed section of thick bamboo (6) and are located between two non-woven fabrics layer (3), fixed section of thick bamboo (6) both ends all communicate with exhaust flue (1).

2. A boiler flue gas treatment device according to claim 1, wherein: the two ends of the fixed cylinder (6) are fixedly connected with flange plates (5), and the smoke exhaust pipeline (1) is connected with the fixed cylinder (6) through the flange plates (5).

3. A boiler flue gas treatment device according to claim 2, wherein: adsorption equipment (2) have two sets, exhaust pipe (1) divide into and discharge fume and be responsible for (7) and two branch pipe (8) that discharge fume, two branch pipe (8) are parallelly connected and are linked together with the main pipe (7) that discharges fume, all link on branch pipe (8) that discharge fume have adsorption equipment (2), branch pipe (8) that discharges fume advances the cigarette end and is equipped with valve (10), branch pipe (8) that discharges fume go out the cigarette end and be equipped with check valve (11).

4. A boiler flue gas treatment device according to claim 1, wherein: the smoke exhaust pipeline (1) is provided with a filter water tank (12), an air inlet (13) is formed in the side face of the filter water tank (12) close to the bottom end, an air outlet (14) is formed in the side face of the filter water tank (12) close to the top end, and the smoke exhaust pipeline (1) is communicated with the air inlet (13) of the filter water tank (12).

5. A boiler flue gas treatment device according to claim 4, wherein: the smoke exhaust pipeline (1) is provided with a smoke exhaust fan (15).

6. A boiler flue gas treatment device according to claim 4, wherein: the air outlet (14) is communicated with a spiral smoke exhaust pipeline (16), and one end, far away from the air outlet (14), of the spiral smoke exhaust pipeline (16) is spirally arranged upwards.

7. A boiler flue gas treatment device according to claim 4, wherein: the utility model discloses a filter tank, including filtering water tank (12), thin wall steel pipe (18) are all connected with between trompil (17), filter tank (12) both ends are all connected with packet head (19), trompil (17) all are located packet head (19) inboard, filter tank (12) bottom secondary water inlet (20) have been seted up to packet head (19), filter tank (12) top secondary delivery port (21) have been seted up to packet head (19).

8. A boiler flue gas treatment device according to claim 4, wherein: one end of the smoke exhaust pipeline (1) close to the air inlet (13) is provided with a check valve (11).