CN110186058B

CN110186058B - Ultralow pollutant discharge device and method for sludge incinerator

Info

Publication number: CN110186058B
Application number: CN201910275994.0A
Authority: CN
Inventors: 袁树伟; 黄家保; 袁斌豪
Original assignee: Jiangsu Yipin High Technology Co ltd
Current assignee: Jiangsu Yipin High Technology Co ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2020-09-15
Anticipated expiration: 2039-04-08
Also published as: CN110186058A

Abstract

The invention discloses a device and a method for ultralow emission of pollutants of a sludge incinerator, and the device comprises a combustion furnace, an exhaust pipe, a carbon tank and a purification tank, wherein the top of the combustion furnace is provided with a feed hopper, the bottom of the combustion furnace is connected with a base, electromagnetic valves are arranged at the joints of the two ends of the combustion furnace, the feed hopper and the base, one side of the middle part of the combustion furnace is connected with an air inlet pipe, the other side of the middle part of the combustion furnace is connected with an air exhaust pipe, and the joint of the. The bottom of base is connected with the blast pipe, the one end of blast pipe is connected with the carbon tank, the one end of carbon tank passes through the blast pipe and connects the purification jar. The device can reduce the pollutant of emission, realizes ultralow emission, reduces the pollution to the environment. The free switching of activated carbon layer is used, reduces the number of times that the activated carbon layer was changed to the carbon tank inside, waits to change once after all activated carbon layers use, improves the efficiency of work. And the active carbon layer is switched simply and quickly, the operation is convenient, and the filtering efficiency is unchanged.

Description

Ultralow pollutant discharge device and method for sludge incinerator

Technical Field

The invention relates to a discharge device, in particular to an ultralow discharge device and method for pollutants of a sludge incinerator, and belongs to the field of sludge incineration treatment application.

Background

At present, the treatment and disposal modes of sludge mainly comprise sanitary landfill, drying, land utilization, incineration and the like. The sludge incineration has the obvious advantages of reduction, harmlessness and recycling. All germs are killed in the incineration process, the stability of heavy metals is improved, toxic organic matters are oxidized and decomposed, and the volume of the residual ash of the incinerated sludge is far smaller than that of the sludge after mechanical dehydration. At present, sludge incineration is widely applied worldwide, and the proportion of sludge incineration disposal in the future will be further improved.

However, the existing sludge incinerator discharge device still has certain defects in use. The existing sludge incinerator needs to add coal dust in the incineration process, the combustion cost is increased, and toxic substances are added in the combustion of the coal dust. Meanwhile, the discharged substances after combustion cannot be fully purified, and the discharged toxic substances are more and cannot reach the standard of ultralow emission. And the internal purifying apparatus has some defects in use, which affects the working efficiency.

Disclosure of Invention

The invention aims to provide a device and a method for ultralow emission of pollutants in a sludge incinerator, which can solve the problems that the existing sludge incinerator needs to add coal dust in incineration, the combustion cost is increased, and toxic substances are added in the combustion of the coal dust. Meanwhile, the discharged substances after combustion cannot be fully purified, and the discharged toxic substances are more and cannot reach the standard of ultralow emission. And the internal purification apparatus has some defects in use, which affects the working efficiency.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a sludge incinerator pollutant minimum discharge apparatus, is including firing burning furnace, blast pipe, carbon tank and purifying tank, the feeder hopper is installed at the top of firing burning furnace, and the bottom is connected with the base, just the solenoid valve is all installed with the junction of feeder hopper and base at the both ends of firing burning furnace, and middle part one side of firing burning furnace is connected with the intake pipe, and the opposite side is connected with the exhaust tube, just the check valve is installed with the junction of firing burning furnace to the exhaust tube.

The bottom of base is connected with the blast pipe, the one end of blast pipe is connected with the carbon tank, the one end of carbon tank passes through the blast pipe and connects the purification jar.

The carbon tank is characterized in that a motor is installed below one end, close to a base, of the carbon tank, one end of the motor is evenly connected with a plurality of connecting rods through a rotating shaft, the end portion of each connecting rod is connected with a connecting ring in a threaded manner, one side, close to the base, of each connecting ring is parallelly connected with a sealing ring, two sides of the end portion of each sealing ring are connected with two sides of the end portion of each connecting ring through damping springs, the length of each connecting rod is equal to the distance between each rotating shaft and the bottom of an exhaust pipe, a mounting plate in a net-shaped arrangement is vertically welded at the middle end of the inner portion of the carbon tank, a compression ring is parallelly connected to one side, close to the connecting rings, of each compression ring is fixedly connected with the mounting plate through two groups of horizontal hydraulic columns, the compression rings, the diameter of clamping ring and the inside diameter phase-match that perforates of go-between, and the inside diameter that perforates of sealing ring is the same with the inside diameter of blast pipe, and the internally mounted of sealing ring has the active carbon layer.

The top both sides of purifying tank are connected with first inlet pipe and second inlet pipe respectively, slaked lime supply machinery and ammonia supply machinery are connected respectively to the one end of first inlet pipe and second inlet pipe, end threaded connection has soft metal covering in the inside of purifying tank, just the inside fixedly connected with pottery section of thick bamboo of soft metal covering, pottery section of thick bamboo comprises a plurality of arc ceramic piece, the inside of pottery piece evenly is provided with a plurality of opening along the direction of height, and the opening all is one end and link up, and the other end is sealed structure, and two adjacent openings link up with sealed setting up conversely in same end, the inner wall coating of opening has nano-catalyst and acid reaction layer.

Preferably, a hydraulic oil tank is installed on one side of the bottom of the base and is connected with the hydraulic column through an oil pipe.

Preferably, the bottom of purifying tank is the circular arc setting, and bottom one side is connected with the discharge pipe, and the bottom of purifying tank and the bottom both ends of carbon tank all are connected with the discharge gate, and draught fan and flue gas analyzer are installed to the tip of discharge pipe.

Preferably, a plurality of spray heads are uniformly arranged at one end, close to the purification tank, inside the carbon tank, one end of each spray head penetrates through the carbon tank and is connected with the activated carbon powder supply device, and a fan is arranged at the top end inside the purification tank and is arranged below the exhaust pipe.

Preferably, the sealing ring is arranged in parallel with the end part of the exhaust pipe, and one side of the sealing ring close to the exhaust pipe is connected with a sealing gasket.

Preferably, soft metal sleeve is provided with joint department along direction of height, and the one side middle part of joint department is provided with the draw-in groove along length direction, and opposite side middle part is connected with the card strip along length direction, the inside at the draw-in groove of card strip joint.

Preferably, the middle parts of the upper end and the lower end of the ceramic cylinder are provided with mounting grooves, the inner threads of the mounting grooves are connected with connecting covers, and the mounting grooves are formed by splicing the end parts of a plurality of ceramic blocks.

Preferably, the two ends of one side of each ceramic block are connected with a raised head along the width direction, the two ends of the other side of each ceramic block are provided with sealing grooves along the width direction, and the two adjacent ceramic blocks are mutually clamped and connected through the raised heads and the sealing grooves.

A use method of an ultralow pollutant discharge device of a sludge incinerator comprises the following specific steps:

the method comprises the following steps: putting sludge to be treated into the feed hopper, opening the electromagnetic valve at the top, and allowing the sludge to fall into the combustion furnace; the air pump pumps air in the combustion furnace through the air pumping pipe, and the interior of the combustion furnace is hollow; a heating device inside the combustion furnace heats the sludge inside the combustion furnace to 1500-1800 ℃ for 60-90 minutes; opening an electromagnetic valve at the bottom, penetrating toxic gas in the combustion furnace from the inside of the base to the inside of the exhaust pipe, introducing air into an inner through hole of the combustion furnace through an air inlet pipe, heating sludge in the combustion furnace by using the heating device again, heating the sludge by contacting with air, burning and oxidizing combustible organic matters in the combustion furnace to form powdery substances, opening the electromagnetic valve at the bottom, and introducing powder generated by combustion into the exhaust pipe;

step two: after the toxic gas, powder generated by combustion and some residues enter the interior of the exhaust pipe, the toxic gas, the powder and some residues drive air to flow along with the induced draft fan and enter the interior of the carbon tank; firstly, filtering toxic gas and dust by an activated carbon layer, and then contacting the other end in the carbon tank with powdered activated carbon sprayed by a spray head, wherein the activated carbon layer and the powdered activated carbon can remove heavy metal and dioxin;

step three: then gas and dust enter the interior of the purification tank from the exhaust pipe, slaked lime and ammonia gas are respectively fed into the interior of the purification tank through the first feed pipe and the second feed pipe, the slaked lime and the ammonia gas are fully contacted with the gas and the dust, and the gas and the dust are subjected to desulfurization and denitrification through the slaked lime and the ammonia gas; the gas and dust then enter the flow holes inside the ceramic cylinder, where they are filtered and react in contact with the catalyst layer and the acidic reaction layer.

The invention has the beneficial effects that:

1. the electromagnetic valves are arranged at the two ends of the combustion furnace, and the air inlet pipe and the air exhaust pipe are respectively arranged at the two sides of the combustion furnace, so that sludge falls into the combustion furnace during work. The air pump pumps out the air in the combustion furnace through the exhaust tube, so that the interior is in a hollow state. The check valve prevents the drawn air from flowing back into the interior of the furnace. The heating device inside the combustion furnace heats the sludge inside the combustion furnace. The toxic organic substance in the sludge can be vaporized, the toxic gas in the combustion furnace penetrates from the inside of the base and enters the exhaust pipe, and then the air is introduced into the through hole in the combustion furnace through the air inlet pipe. And the heating device is utilized again to heat the sludge inside, after the sludge is contacted with air and heated, the combustible organic matters inside are combusted and oxidized to form powdery substances, the electromagnetic valve at the bottom is opened, and the powder generated by combustion enters the exhaust pipe. Pulverized coal is not added in the sludge combustion, so that the use of fuel is saved. The two different heating modes can thoroughly remove toxic substances in the sludge without adding other substances for combustion.

2. Through installing several activated carbon layers and several shower nozzles in the inside of carbon canister for toxic gas and the powder and some residue that the burning produced enter into the inside of carbon canister. The activated carbon layer filters toxic gas and dust, and then contacts with powdered activated carbon sprayed from a spray head at the other end inside the carbon tank. The contact area of the activated carbon, the toxic gas and the powder generated by combustion is increased, the adsorption efficiency is improved, and the activated carbon is purified more thoroughly. And the powdered activated carbon can save the using amount of the activated carbon, and the utilization rate of the activated carbon is improved. The activated carbon layer and the powdered activated carbon can remove heavy metals and dioxin.

And the activated carbon layer can be freely switched according to the purification time and the purified sludge amount in use. The motor drives the rotating shaft to rotate, and then drives the external connecting rod and the connecting ring at the end part of the external connecting rod to rotate, so that the used activated carbon layer is rotated away, and a new activated carbon layer rotates to the end part of the exhaust pipe. The hydraulic pressure post can drive the clamping ring and pass the go-between, promotes the tip removal of sealed ring to the blast pipe to with the tip of sealing ring butt at the blast pipe, seal it, make new active carbon layer play filterable effect. The activated carbon layer is freely switched and used, the times of replacing the activated carbon layer inside the carbon tank are reduced, and the activated carbon layer is replaced once after all the activated carbon layers are used, so that the working efficiency is improved. And the active carbon layer is switched simply and quickly, the operation is convenient, and the filtering efficiency is unchanged.

3. Through connecting two inlet pipes at the top of purge tube, an internally mounted pottery section of thick bamboo for work gas and dust enter into the inside of purifying tank from the blast pipe, first inlet pipe and second inlet pipe drop into lime hydrate and ammonia respectively to the inside of purifying tank, and lime hydrate and ammonia and the abundant contact of gas and dust, lime hydrate and ammonia carry out SOx/NOx control to gas and dust. The gas and dust are filtered inside the ceramic cylinder, where large particles and large masses fall. And internally reacts in contact with the catalyst layer to convert the nitrogen oxides to nitrogen and water. The desulfurization efficiency of the acidic reaction layer can reach more than 85 percent, and the desulfurization efficiency is high.

4. Through forming a ceramic section of thick bamboo by a plurality of ceramic piece for in the use, inside impurity is more, when needing the clearance, takes out soft metal covering from purifying jar inside, unpacks soft metal covering apart from the junction, and then the inside a plurality of ceramic piece of a ceramic section of thick bamboo breaks away from each other. The inside convenient clearance of ceramic block after breaking away from, the inside clean up that filters off impurity and dust can be thorough for ceramic block can be used again, and make things convenient for the cleanness of a pottery section of thick bamboo. After cleaning, the ceramic cylinder can be ensured to keep the original purification capacity. The device can reduce the pollutant of emission, realizes ultralow emission, reduces the pollution to the environment.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the internal structure of the retort of the present invention.

Fig. 3 is a schematic view of a coupling ring mounting structure according to the present invention.

Fig. 4 is a schematic view of a sealing ring mounting structure of the present invention.

FIG. 5 is a schematic view of the internal structure of the purification tank of the present invention.

FIG. 6 is a schematic view of the structure of the ceramic cylinder of the present invention.

Fig. 7 is a schematic view of the top structure of the ceramic cylinder of the present invention.

Fig. 8 is a schematic view of a disassembled structure of the ceramic cylinder according to the present invention.

FIG. 9 is a schematic view of a flexible metal sleeve according to the present invention.

In the figure: 1. a combustion furnace; 2. an air inlet pipe; 3. a feed hopper; 4. an electromagnetic valve; 5. an air exhaust pipe; 6. a one-way valve; 7. a base; 8. a hydraulic oil tank; 9. an exhaust pipe; 10. a carbon tank; 11. a first feed tube; 12. a second feed tube; 13. a purification tank; 14. a discharge pipe; 15. a discharge port; 16. a motor; 17. a connecting ring; 18. pressing a ring; 19. a hydraulic column; 20. mounting a plate; 21. a spray head; 22. a connecting rod; 23. an activated carbon layer; 24. a gasket; 25. a seal ring; 26. perforating; 27. a damping spring; 28. clamping the strip; 29. a card slot; 30. a fan; 31. a flexible metal sheath; 32. a ceramic cylinder; 33. a connecting cover; 34. mounting grooves; 35. a raised head; 36. a flow-through hole; 37. sealing the groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an ultra-low pollutant discharge device for a sludge incinerator comprises a combustion furnace 1, an exhaust pipe 9, a carbon tank 10 and a purification tank 13, wherein the top of the combustion furnace 1 is provided with a feed hopper 3, the bottom of the combustion furnace 1 is connected with a base 7, electromagnetic valves 4 are respectively arranged at the two ends of the combustion furnace 1 and the connection part of the feed hopper 3 and the base 7, one side of the middle part of the combustion furnace 1 is connected with an air inlet pipe 2, the other side of the middle part of the combustion furnace 1 is connected with an exhaust pipe 5, and a one-way valve 6;

the bottom of the base 7 is connected with an exhaust pipe 9, one end of the exhaust pipe 9 is connected with a carbon tank 10, and one end of the carbon tank 10 is connected with a purification tank 13 through the exhaust pipe 9;

a motor 16 is arranged below one end of the interior of the carbon tank 10 close to the base 7, one end of the motor 16 is uniformly connected with a plurality of connecting rods 22 through a rotating shaft, the end part of each connecting rod 22 is in threaded connection with a connecting ring 17, one side of each connecting ring 17 close to the base 7 is in parallel connection with a sealing ring 25, two sides of the end part of each sealing ring 25 are connected with two sides of the end part of each connecting ring 17 through a damping spring 27, the length of each connecting rod 22 is equal to the distance between the rotating shaft and the bottom of the exhaust pipe 9, a mounting plate 20 in a net shape is vertically welded at the middle end of the interior of the carbon tank 10, one side of each mounting plate 20 close to the corresponding connecting ring 17 is in parallel connection with a pressing ring 18, the side surface of each pressing ring 18 is fixedly connected with the mounting plate 20 through two groups of horizontal hydraulic cylinders 19, the pressing ring 18, the centers of, the diameter of the pressing ring 18 is matched with that of the inner through hole 26 of the connecting ring 17, the diameter of the inner through hole 26 of the sealing ring 25 is the same as that of the exhaust pipe 9, and the activated carbon layer 23 is arranged inside the sealing ring 25;

the top both sides of purifying tank 13 are connected with first inlet pipe 11 and second inlet pipe 12 respectively, slaked lime supply machine and ammonia supply machine are connected respectively to the one end of first inlet pipe 11 and second inlet pipe 12, end threaded connection has soft metal covering 31 in the inside of purifying tank 13, and the inside fixedly connected with ceramic cylinder 32 of soft metal covering 31, ceramic cylinder 32 comprises a plurality of arc ceramic piece, the inside of ceramic piece evenly is provided with a plurality of opening 36 along the direction of height, and opening 36 all is one end and link up, the sealed structure of the other end, two adjacent opening 36 link up with sealed setting opposite at same end, the inner wall coating of opening 36 has nano catalyst and acid reaction layer.

As a technical optimization scheme of the invention, one side of the bottom of the base 7 is provided with the hydraulic oil tank 8, the hydraulic oil tank 8 is connected with the hydraulic column 19 through an oil pipe, and the hydraulic oil tank 8 can provide power for the hydraulic column 19 in work.

As a technical optimization scheme of the invention, the bottom of the purification tank 13 is arranged in an arc shape, one side of the bottom is connected with a discharge pipe 14, the bottom of the purification tank 13 and two ends of the bottom of the carbon tank 10 are both connected with discharge ports 15, an induced draft fan and a flue gas analyzer are installed at the end part of the discharge pipe 14, and the discharge pipe 14 and the discharge ports 15 are convenient for discharging gas and impurities in purification. And the draught fan can drive the gas in the exhaust pipe 9 to flow outwards, so that the gas can not flow back.

As a technical optimization scheme of the invention, a plurality of spray nozzles 21 are uniformly arranged at one end of the carbon tank 10 close to the purification tank 13, one end of each spray nozzle 21 penetrates through the carbon tank 10 and is connected with an active carbon powder supply device, a fan 30 is arranged at the top end of the interior of the purification tank 13, the fan 30 is arranged below the exhaust pipe 9, and the fan 30 can be blown by the entering gas and dust and can disperse and uniformly enter the interior of the ceramic cylinder 32.

As a technical optimization scheme of the present invention, the sealing ring 25 is arranged in parallel with the end portion of the exhaust pipe 9, and one side of the sealing ring 25 close to the exhaust pipe 9 is connected with the sealing gasket 24, so that the sealing ring 25 can seal the end portion of the exhaust pipe 9, and air leakage is not easy to occur in the sealing property.

As a technical optimization scheme of the invention, the flexible metal sleeve 31 is provided with a clamping part along the height direction, the middle part of one side of the clamping part is provided with a clamping groove 29 along the length direction, the middle part of the other side of the clamping part is connected with a clamping strip 28 along the length direction, the clamping strip 28 is clamped in the clamping groove 29, and the joint of the flexible metal sleeve 31 is clamped with the clamping groove 29 through the clamping strip 28, so that the connection and the installation are convenient.

As a technical optimization scheme of the invention, the middle parts of the upper end and the lower end of the ceramic cylinder 32 are respectively provided with a mounting groove 34, the interior of the mounting groove 34 is in threaded connection with a connecting cover 33, the mounting groove 34 is formed by splicing the end parts of a plurality of ceramic blocks, and the connecting cover 33 can fix the ceramic blocks at the upper end and the lower end, so that the connection is tighter and is not easy to loosen.

As a technical optimization scheme of the invention, the two ends of one side of each ceramic block are connected with the raised heads 35 along the width direction, the two ends of the other side of each ceramic block are provided with the sealing grooves 37 along the width direction, the two adjacent ceramic blocks are mutually clamped and connected through the raised heads 35 and the sealing grooves 37, the sealing performance of the connection part is improved, and a good purification effect can be achieved in use.

the method comprises the following steps: putting sludge to be treated into a feed hopper 3, opening an electromagnetic valve 4 at the top, and allowing the sludge to fall into a combustion furnace 1; the air exhaust pipe 5 is connected with an external air pump, the air pump pumps air in the combustion furnace 1 through the air exhaust pipe 5, and the interior is hollow; a heating device in the combustion furnace 1 heats the sludge in the combustion furnace to 1500-1800 ℃ for 60-90 minutes; opening the electromagnetic valve 4 at the bottom, penetrating toxic gas in the combustion furnace 1 from the inside of the base 7 into the exhaust pipe 9, passing through air in the through hole in the combustion furnace 1 through the air inlet pipe 2, heating sludge in the combustion furnace by using the heating device again, burning and oxidizing combustible organic matters in the combustion furnace after the sludge is contacted and heated with the air, burning the combustible organic matters to form powdery substances, and opening the electromagnetic valve 4 at the bottom to enable powder generated by burning to enter the exhaust pipe 9;

step two: after the toxic gas, powder generated by combustion and some residues enter the exhaust pipe 9, the toxic gas, the powder and some residues drive air to flow along with the induced draft fan and enter the carbon tank 10; firstly, the activated carbon layer 23 filters toxic gas and dust, then the other end in the carbon tank 10 is contacted with the powdered activated carbon sprayed by the spray head 21, and the activated carbon layer 23 and the powdered activated carbon can remove heavy metal and dioxin;

step three: then, gas and dust enter the interior of the purification tank 13 from the exhaust pipe 9, slaked lime and ammonia gas are respectively fed into the interior of the purification tank 13 through the first feed pipe 11 and the second feed pipe 12, the slaked lime and the ammonia gas are fully contacted with the gas and the dust, and the gas and the dust are subjected to desulfurization and denitrification through the slaked lime and the ammonia gas; the gas and dust then enter the flow holes 36 inside the ceramic cylinder 32, where they are filtered and react inside in contact with the catalyst layer and the acidic reaction layer inside the ceramic cylinder 32.

When the invention is used, sludge to be treated is put into the feed hopper 3, the electromagnetic valve 4 at the top is opened, and the sludge falls into the combustion furnace 1. The exhaust pipe 5 is connected to an external air pump, and the air pump pumps out air inside the combustion furnace 1 through the exhaust pipe 5, so that the inside is hollow. The non-return valve 6 prevents the drawn-off air from flowing back into the interior of the furnace. The heating device in the combustion furnace 1 heats the sludge in the combustion furnace to 1500-1800 ℃ for 60-90 minutes. The toxic organic substances in the sludge can be vaporized, the electromagnetic valve 4 at the bottom is opened, the toxic gas in the combustion furnace 1 penetrates from the inside of the base 7 and enters the exhaust pipe 9, and then the electromagnetic valve 4 at the bottom is closed, and air is introduced into the through hole in the combustion furnace 1 through the air inlet pipe 2. The heating device is used again for heating the sludge inside, after the sludge is contacted with air and heated, the combustible organic matters inside are combusted and oxidized to form powdery substances, then the electromagnetic valve 4 at the bottom is opened, and the powder generated by combustion enters the exhaust pipe 9. Pulverized coal is not added in the sludge combustion, so that the use of fuel is saved.

After the toxic gas, the powder generated by combustion and some residues enter the exhaust pipe 9, the air flows along with the driving of the draught fan and enters the carbon tank 10. The activated carbon layer 23 filters toxic gases and dusts first, and then contacts powdered activated carbon sprayed from the spray head 21 at the other end inside the canister 10. The contact area of the activated carbon, the toxic gas and the powder generated by combustion is increased, the adsorption efficiency is improved, and the activated carbon is purified more thoroughly. And the powdered activated carbon can save the using amount of the activated carbon, and the utilization rate of the activated carbon is improved. The activated carbon layer 23 and powdered activated carbon can remove heavy metals and dioxin.

The activated carbon layer 23 can be freely switched in use according to the time for purification and the amount of sludge purified. The hydraulic column 19 contracts to drive the pressing ring 18 to move towards one side of the mounting plate 20, then the pressing ring 18 is separated from the sealing ring 25 and moves out of the connecting ring 17, and the damping spring 27 contracts to drive the sealing ring 25 to be separated from the end part of the exhaust pipe 9. The starting motor 16 drives the rotating shaft to rotate, and further drives the external connecting rod 22 and the connecting ring 17 at the end part thereof to rotate, so that the used activated carbon layer 23 is rotated away, and a new activated carbon layer 23 rotates to the end part of the exhaust pipe 9. And the hydraulic cylinder 19 is started to move towards the end of the exhaust pipe 9. The pressing ring 18 is driven to penetrate through the connecting ring 17, one end of the pressing ring 18 is in contact with the end portion of the sealing ring 25, the sealing ring 25 is pushed to move towards the end portion of the exhaust pipe 9, the sealing ring 25 abuts against the end portion of the exhaust pipe 9 to seal the exhaust pipe, and the new activated carbon layer 23 plays a role in filtering. The activated carbon layers 23 can be freely switched to be used, the times of replacing the activated carbon layers 23 in the carbon tank 10 are reduced, and the activated carbon layers 23 are replaced once after all the activated carbon layers 23 are used, so that the working efficiency is improved. And the activated carbon layer 23 is switched simply and quickly, the operation is convenient, and the filtering efficiency is unchanged.

And then the gas and the dust enter the purifying tank 13 from the exhaust pipe 9, slaked lime and ammonia gas are respectively fed into the purifying tank 13 through the first feed pipe 11 and the second feed pipe 12, the slaked lime and the ammonia gas are fully contacted with the gas and the dust, and the gas and the dust are subjected to desulfurization and denitrification through the slaked lime and the ammonia gas. The gas and dust then enter the flow holes 36 inside the ceramic cylinder 32. Because one end of the circulation hole 36 is sealed, the gas and the dust can only penetrate through the ceramic wall of the circulation hole 36 to enter the adjacent circulation hole 36 and be discharged outwards. The gas and dust are filtered inside the ceramic cylinder 32, and the particles and the mass are large and fall inside. And internally reacts in contact with the catalyst layer to convert the nitrogen oxides to nitrogen and water. The desulfurization efficiency of the acidic reaction layer can reach more than 85 percent, and the desulfurization efficiency is high.

The purified gas is discharged from the discharge pipe 14, and the remaining impurities are discharged from the discharge port 15, and the sludge burned in the combustion furnace 1 is discharged to the outside, so that the combustion furnace can be reused.

When the ceramic cylinder 32 is used, impurities in the ceramic cylinder are more, and the soft metal sleeve 31 is taken out from the inside of the purification tank 13 when the ceramic cylinder is required to be cleaned, the connecting covers 33 at the upper end and the lower end of the ceramic cylinder 32 are unscrewed and disassembled, the soft metal sleeve 31 is disassembled from the connecting position, and then a plurality of ceramic blocks in the ceramic cylinder 32 are separated from each other. The inside convenient clearance of ceramic block after breaking away from, the inside clean up that filters off impurity and dust can be thorough for the use that the ceramic block can be used again, and make things convenient for the cleanness of a pottery section of thick bamboo 32. After cleaning, a plurality of ceramic blocks are enclosed into a ceramic cylinder 32 again, and the raised head 35 is clamped in the sealing groove 37 to play a role in sealing, so that the ceramic cylinder 32 is ensured to keep the original purification capacity. Connecting covers 33 at the upper end and the lower end are connected with two ends of the ceramic cylinder 32 through threads, and finally, the external soft metal sleeve 31 is clamped and sealed at the joint and is arranged inside the purification tank 13.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sludge incinerator pollutant ultra-low emission device comprises a combustion furnace (1), an exhaust pipe (9), a carbon tank (10) and a purification tank (13), and is characterized in that a feed hopper (3) is installed at the top of the combustion furnace (1), a base (7) is connected to the bottom of the combustion furnace, electromagnetic valves (4) are installed at the two ends of the combustion furnace (1) and at the connection positions of the feed hopper (3) and the base (7), an air inlet pipe (2) is connected to one side of the middle of the combustion furnace (1), an air exhaust pipe (5) is connected to the other side of the middle of the combustion furnace (1), and a one-way valve (6) is installed at the connection position of;

the bottom of the base (7) is connected with an exhaust pipe (9), one end of the exhaust pipe (9) is connected with a carbon tank (10), and one end of the carbon tank (10) is connected with a purification tank (13) through the exhaust pipe (9);

the utility model discloses a carbon tank, including carbon tank (10), motor (16) are installed to the inside one end below that is close to base (7) of carbon tank (10), the one end of motor (16) evenly is connected with a plurality of connecting rod (22) through the pivot, the tip threaded connection of connecting rod (22) has go-between (17), one side parallel connection that go-between (17) is close to base (7) has sealing ring (25), the tip both sides of sealing ring (25) are all connecting the tip both sides of go-between (17) through damping spring (27), the length of connecting rod (22) is the same with the distance of pivot and blast pipe (9) bottom, the vertical welding of inside middle-end of carbon tank (10) has mounting panel (20) of netted setting, one side parallel connection that mounting panel (20) are close to go-between (17) has clamping ring (18), the side of clamping ring (18) is through two sets of horizontal, the center of the pressure ring (18) is in the same straight line with the center of the connecting ring (17) and the center of the sealing ring (25), the middle ends of the inside of the connecting ring (17) and the center of the inside of the sealing ring (25) are both provided with a through hole (26), the diameter of the through hole (26) of the connecting ring (17) is larger than that of the through hole (26) of the sealing ring (25), the diameter of the pressure ring (18) is matched with that of the through hole (26) of the connecting ring (17), the diameter of the through hole (26) of the sealing ring (25) is the same as that of the exhaust pipe (9), and the inside of the sealing ring (25) is provided;

the utility model discloses a purification tank, including purification tank (13), lime hydrate supply machine and ammonia gas supply machine, the top both sides of purification tank (13) are connected with first inlet pipe (11) and second inlet pipe (12) respectively, the one end of first inlet pipe (11) and second inlet pipe (12) is connected lime hydrate supply machine and ammonia gas supply machine respectively, end threaded connection has soft metal covering (31) in the inside of purification tank (13), just the inside fixedly connected with ceramic cylinder (32) of soft metal covering (31), ceramic cylinder (32) comprise a plurality of arc ceramic block, the inside of ceramic block evenly is provided with a plurality of opening (36) along the direction of height, and opening (36) all are one end and link up, the sealed structure of the other end, and two adjacent opening (36) link up with sealed setting in same end on the contrary, the inner wall coating of opening (36) has nanometer catalyst and acid reaction layer.

2. The ultra-low pollutant discharge device of the sludge incinerator according to the claim 1, characterized in that the bottom side of the base (7) is installed with a hydraulic oil tank (8), the hydraulic oil tank (8) is connected with a hydraulic column (19) through an oil pipe.

3. The ultra-low pollutant discharge device of the sludge incinerator according to claim 1, characterized in that the bottom of the purification tank (13) is arranged in a circular arc shape, one side of the bottom is connected with a discharge pipe (14), the bottom of the purification tank (13) and both ends of the bottom of the carbon tank (10) are connected with discharge ports (15), and the end of the discharge pipe (14) is provided with an induced draft fan and a flue gas analyzer.

4. The ultra-low pollutant discharge device of the sludge incinerator according to claim 1, characterized in that a plurality of spray heads (21) are uniformly installed at one end of the carbon tank (10) close to the purification tank (13), one end of each spray head (21) penetrates through the carbon tank (10) to be connected with an activated carbon powder supply device, a fan (30) is installed at the top end of the interior of the purification tank (13), and the fan (30) is arranged below the exhaust pipe (9).

5. The ultra-low pollutant discharge device of the sludge incinerator according to the claim 1, characterized in that the sealing ring (25) is parallel to the end of the exhaust pipe (9), and the sealing gasket (24) is connected to the side of the sealing ring (25) near the exhaust pipe (9).

6. The ultra-low pollutant discharge device of the sludge incinerator according to claim 1, characterized in that said flexible metal sleeve (31) is provided with a clamping joint along the height direction, and the middle part of one side of the clamping joint is provided with a clamping groove (29) along the length direction, and the middle part of the other side is connected with a clamping strip (28) along the length direction, said clamping strip (28) being clamped inside the clamping groove (29).

7. The ultra-low pollutant discharge device of the sludge incinerator according to claim 1, characterized in that the middle of the upper and lower ends of the ceramic cylinder (32) are provided with mounting grooves (34), the inside of the mounting groove (34) is connected with a connecting cover (33) by screw thread, and the mounting groove (34) is formed by splicing the end parts of a plurality of ceramic blocks.

8. The ultra-low pollutant discharge device of the sludge incinerator according to claim 1, characterized in that both ends of one side of said ceramic blocks are connected with a nose (35) along the width direction, both ends of the other side are provided with a sealing groove (37) along the width direction, and two adjacent ceramic blocks are mutually clamped and connected through the nose (35) and the sealing groove (37).

9. The use method of the ultra-low pollutant discharge device of the sludge incinerator is characterized by comprising the following specific steps:

the method comprises the following steps: putting sludge to be treated into the feed hopper (3), opening the electromagnetic valve (4) at the top, and allowing the sludge to fall into the combustion furnace (1); the air pumping pipe (5) is connected with an external air pump, the air pump pumps air in the combustion furnace (1) through the air pumping pipe (5), and the interior is hollow; a heating device in the combustion furnace (1) heats sludge in the combustion furnace to 1500-1800 ℃ for 60-90 minutes; opening an electromagnetic valve (4) at the bottom, penetrating toxic gas in the combustion furnace (1) from the inside of a base (7) into the inside of an exhaust pipe (9), introducing air into an inner through hole of the combustion furnace (1) through an air inlet pipe (2), heating sludge in the combustion furnace by using a heating device again, contacting and heating the sludge with the air, burning and oxidizing combustible organic matters in the sludge to form powdery substances, opening the electromagnetic valve (4) at the bottom, and introducing powder generated by burning into the exhaust pipe (9);

step two: after the toxic gas, powder generated by combustion and some residues enter the exhaust pipe (9), the toxic gas, the powder and some residues drive air to flow along with the induced draft fan and enter the carbon tank (10); firstly, filtering toxic gas and dust by an activated carbon layer (23), and then contacting the other end in a carbon tank (10) with powdered activated carbon sprayed by a spray head (21), wherein heavy metals and dioxin can be removed by the activated carbon layer (23) and the powdered activated carbon;

step three: then gas and dust enter the interior of the purification tank (13) from the exhaust pipe (9), slaked lime and ammonia gas are respectively fed into the interior of the purification tank (13) through the first feed pipe (11) and the second feed pipe (12), the slaked lime and the ammonia gas are fully contacted with the gas and the dust, and the gas and the dust are subjected to desulfurization and denitrification through the slaked lime and the ammonia gas; the gas and dust then enter the flow holes (36) inside the ceramic cylinder (32), are filtered inside the ceramic cylinder (32), and react inside in contact with the catalyst layer and the acidic reaction layer.