CN110817873A - Activated carbon activation and regeneration device and method - Google Patents
Activated carbon activation and regeneration device and method Download PDFInfo
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- CN110817873A CN110817873A CN201911172601.XA CN201911172601A CN110817873A CN 110817873 A CN110817873 A CN 110817873A CN 201911172601 A CN201911172601 A CN 201911172601A CN 110817873 A CN110817873 A CN 110817873A
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- activated carbon
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 213
- 238000011069 regeneration method Methods 0.000 title claims abstract description 139
- 230000008929 regeneration Effects 0.000 title claims abstract description 132
- 230000004913 activation Effects 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 86
- 239000007789 gas Substances 0.000 claims abstract description 41
- 239000002699 waste material Substances 0.000 claims abstract description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000002485 combustion reaction Methods 0.000 claims description 41
- 239000000428 dust Substances 0.000 claims description 35
- 238000010791 quenching Methods 0.000 claims description 32
- 239000007921 spray Substances 0.000 claims description 31
- 239000002918 waste heat Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 25
- 239000003546 flue gas Substances 0.000 claims description 25
- 230000000171 quenching effect Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 22
- 238000005406 washing Methods 0.000 claims description 20
- 229920006395 saturated elastomer Polymers 0.000 claims description 14
- 230000001172 regenerating effect Effects 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000003213 activating effect Effects 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 238000009461 vacuum packaging Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000001994 activation Methods 0.000 abstract description 59
- 238000003795 desorption Methods 0.000 abstract description 3
- 239000010815 organic waste Substances 0.000 abstract 1
- 239000003570 air Substances 0.000 description 27
- 230000007246 mechanism Effects 0.000 description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 8
- 239000004202 carbamide Substances 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005201 scrubbing Methods 0.000 description 3
- 239000008234 soft water Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
- C01B32/36—Reactivation or regeneration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
Abstract
The invention provides an activated carbon activation and regeneration device and an activated carbon activation and regeneration method, which comprise a granular activated carbon activation and regeneration system, a powdered activated carbon activation and regeneration system and a waste gas treatment system, wherein the granular activated carbon activation and regeneration system and the powdered activated carbon activation and regeneration system are both communicated with the waste gas treatment system, after granular waste activated carbon is subjected to high-temperature desorption and activation and regeneration by the granular activated carbon activation and regeneration system, organic waste gas is treated by the waste gas treatment system, and after powdered waste activated carbon is subjected to high-temperature desorption and activation and regeneration by the powdered activated carbon activation and regeneration system, waste gas is treated by the waste gas treatment system. By arranging the granular activated carbon activation and regeneration system and the powdered activated carbon activation and regeneration system, the granular waste activated carbon can be activated and regenerated, and the powdered waste activated carbon can also be activated and regenerated.
Description
Technical Field
The invention relates to the technical field of activated carbon treatment, in particular to an activated carbon activation and regeneration device and an activated carbon activation and regeneration method.
Background
At present, activated carbon is used more and more widely in daily life, and a plurality of people use the activated carbon to purify water and air, however, the activated carbon can not be used continuously due to the reasons of saturated adsorption, micropore blockage, breakage and the like, and the activated carbon is directly discarded, so that the environment is polluted, and the economic benefit is poor, so people invest a great deal of energy at present to research in the activated regeneration direction of the activated carbon.
For example, chinese patent "CN 108940242A" discloses an activated carbon regeneration activation device, including feed arrangement, activation rotary furnace body, actuating mechanism, heat preservation mechanism, discharging device, air inlet mechanism, rotatory air inlet joint and washing mechanism, the one end of activation rotary furnace body is provided with the feed inlet, and the feed inlet is connected with feed arrangement, and the other end of activation rotary furnace body is provided with the discharge gate, and the discharge gate is connected with discharging device, just the both ends outside of activation rotary furnace body is equipped with actuating mechanism, and the middle part outside cover of activation rotary furnace body has heat preservation mechanism, discharging device's internally mounted has air inlet mechanism, just through rotatory air inlet joint connection between air inlet mechanism and the activation rotary furnace body, washing mechanism is connected with the feed arrangement conveying. Although the technical scheme can be used for activating and regenerating the activated carbon, the tail gas treatment is lacked, and the environment is easily influenced.
Disclosure of Invention
In order to solve the problems that activated carbon can be activated and regenerated, tail gas treatment is lacked and the environment is easily affected in the prior art, the invention provides an activated carbon activation and regeneration device and an activated carbon activation and regeneration method.
The invention realizes the aim through the following technical scheme: the utility model provides a fault point positioner for transmission line patrols and examines, includes granular active carbon activation regeneration system, powdered active carbon activation regeneration system and exhaust-gas treatment system, granular active carbon activation regeneration system and powdered active carbon activation regeneration system all are linked together with exhaust-gas treatment system, and granular useless active carbon is handled by exhaust-gas treatment system through granular active carbon activation regeneration system activation regeneration back, and likepowder useless active carbon is handled by exhaust-gas treatment system through powdered active carbon activation regeneration system activation regeneration back, and waste gas is handled by exhaust-gas treatment system.
On the basis, the granular activated carbon activation regeneration system comprises a first two-stage screw conveyor, a rotary kiln regeneration furnace, a first cooling conveying groove and a first air feeder, wherein the first two-stage screw conveyor is communicated with a material inlet of the rotary kiln regeneration furnace, the first cooling conveying groove is communicated with a material outlet of the rotary kiln regeneration furnace, and an air outlet of the first air feeder is communicated with the rotary kiln regeneration furnace.
On the basis, the powdered activated carbon activation regeneration system comprises a two-stage screw conveyor II, a fluidized regeneration furnace, a cooling conveying groove II, a 1100 ℃ high-temperature dust remover and a blower II, wherein the two-stage screw conveyor II is communicated with a material inlet of the fluidized regeneration furnace, a material outlet of the fluidized regeneration furnace is communicated with the 1100 ℃ high-temperature dust remover, the 1100 ℃ high-temperature dust remover is communicated with the cooling conveying groove II, and an air outlet of the blower II is communicated with the fluidized regeneration furnace.
On this basis, exhaust-gas treatment system includes combustion chamber, exhaust-heat boiler, quench tower, dry-type reaction unit, sack cleaner, sprays scrubbing tower, draught fan, flue gas heater and chimney, rotary kiln regenerator intercommunication combustion chamber entry, 1100 ℃ high temperature dust remover intercommunication combustion chamber entry, the combustion chamber export intercommunication exhaust-heat boiler, exhaust-heat boiler intercommunication quench tower intercommunication dry-type reaction unit, dry-type reaction unit intercommunication sack cleaner, the sack cleaner intercommunication sprays the scrubbing tower, the export that sprays the scrubbing tower communicates the chimney behind draught fan and the flue gas heater.
On the basis, the dry type reaction device further comprises a gas storage tank, compressed air is stored in the gas storage tank, and the gas storage tank is communicated with the combustion chamber, the waste heat boiler, the quench tower and the dry type reaction device.
On the basis, the rotary kiln type waste heat recovery device further comprises a steam storage tank, saturated steam is stored in the steam storage tank, one end of the steam storage tank is communicated with the flue gas heater, the rotary kiln regeneration furnace and the fluidized regeneration furnace, and the other end of the steam storage tank is communicated with the waste heat boiler.
On the basis, the waste gas treatment system further comprises an SNCR system, a quenching system, a semi-dry absorption system, a spraying system and a water supply system, wherein the SNCR system is connected with the waste heat boiler, the quenching system is connected with the quenching tower, the semi-dry absorption system is connected with the dry type reaction device, the spraying system is connected with the spraying washing tower, one end of the water supply system is connected with the waste heat boiler, and the other end of the water supply system is connected with the flue gas heater.
On this basis, the number of the spray washing towers is 2.
On the basis, the activated regeneration method of the activated carbon comprises the following steps: the method comprises the following steps: the granular active carbon activation regeneration system carries out activation regeneration treatment on granular waste active carbon; step two: the powdered activated carbon activation regeneration system carries out activation regeneration treatment on the powdered waste activated carbon; step three: the waste gas treatment system carries out waste gas treatment on the waste gas discharged from the granular activated carbon activation regeneration system and the powdered activated carbon activation regeneration system, so that the waste gas reaches the standard and is discharged.
On the basis, the method comprises the following specific steps: the method comprises the following steps: granular waste activated carbon is conveyed into a rotary kiln regeneration furnace through a first two-stage screw conveyor, a first air feeder feeds air into the rotary kiln regeneration furnace, a first steam storage tank feeds saturated steam into the rotary kiln regeneration furnace, the rotary kiln regeneration furnace carries out activation regeneration treatment, a granular activated carbon finished product is cooled and conveyed through a first cooling conveying groove and then is subjected to vacuum packaging, and waste gas generated in the activation regeneration process is fed into a waste gas treatment system; step two: conveying the powdery waste active carbon into a fluidized regeneration furnace through a second two-stage screw conveyor, feeding air into the fluidized regeneration furnace through a second air feeder, feeding saturated steam into a steam storage tank of the fluidized regeneration furnace, carrying out activation regeneration treatment on the fluidized regeneration furnace, feeding the treated mixed gas into a 1100 ℃ high-temperature dust remover to strip a powdery active carbon finished product from waste gas, then feeding the powdery active carbon finished product into a second cooling conveying groove for cooling and conveying, carrying out vacuum packaging, and feeding the stripped waste gas into a waste gas treatment system; step three: intensively introducing the waste gas in the first step and the second step into a combustion chamber for full combustion and oxidation, wherein the combustion temperature is 1100 ℃, and the combustion time of the waste gas is more than 2 seconds; then, the waste gas enters a waste heat boiler for denitration treatment, and the temperature of the waste gas is reduced to 550 ℃; then, the waste gas with the temperature of 550 ℃ enters a quenching tower and is cooled to 200 ℃ within 1 second; then the waste gas with the temperature of 200 ℃ enters a dry type reaction device for purification treatment; then enters a bag-type dust collector for dust removal treatment, then enters a spray washing tower for spray washing, and finally is discharged through a chimney after being heated by induced draft fan and a flue gas heater.
Compared with the prior art, the invention has the beneficial effects that:
by arranging the granular activated carbon activation and regeneration system and the powdered activated carbon activation and regeneration system, the granular waste activated carbon can be activated and regenerated, and the powdered waste activated carbon can also be activated and regenerated, so that the method is simple, convenient to operate and good in adaptability;
by arranging the waste gas treatment system, the waste gas generated by activated carbon activation regeneration treatment can be purified and discharged up to the standard, so that the environment-friendly effect is improved;
according to the invention, the steam storage tank is arranged to store saturated steam generated by the waste heat boiler and send the saturated steam into the flue gas heater, the rotary kiln regenerator and the fluidized regenerator, so that energy can be recycled, the energy-saving and emission-reducing effects are improved, and the waste gas temperature is recycled by the waste heat boiler, so that energy can be conveniently provided for the flue gas heater.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the construction of a granular activated carbon activation regeneration system according to the present invention;
FIG. 3 is a schematic view showing the construction of a powdery activated carbon activation regeneration system according to the present invention;
FIG. 4 is a schematic view of the construction of an exhaust gas treatment system according to the present invention;
FIG. 5 is a flow chart of the operation of the present invention;
in the figure: 1. the device comprises a granular activated carbon activation and regeneration system, 2a powdered activated carbon activation and regeneration system, 3 a waste gas treatment system, 11 a first two-stage screw conveyor, 12 a rotary kiln regeneration furnace, 13 a first cooling conveying tank, 21 a second two-stage screw conveyor, 22 a fluidization regeneration furnace, 23 a second cooling conveying tank, 24 and 1100 ℃ high-temperature dust remover, 31 a combustion chamber, 32 a waste heat boiler, 33 a quench tower, 34 a dry reaction device, 35 a bag-type dust remover, 36 a spray washing tower, 37 a draught fan, 38 a flue gas heater, 39, a chimney, 311, an SNCR system, 312, the quench system, 313, a semi-dry absorption system, 314, a spray system, 315 and a water supply system.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 5, the present invention schematically shows an activated carbon activation and regeneration apparatus and an activated carbon activation and regeneration method.
The invention discloses a fault point positioning device for power transmission line inspection, and as shown in figures 1-4, the active carbon activation and regeneration device comprises a granular active carbon activation and regeneration system 1, a powdered active carbon activation and regeneration system 2 and a waste gas treatment system 3, wherein the granular active carbon activation and regeneration system 1 and the powdered active carbon activation and regeneration system 2 are both communicated with the waste gas treatment system 3, after granular waste active carbon is activated and regenerated by the granular active carbon activation and regeneration system 1, waste gas is treated by the waste gas treatment system 3, after powdered waste active carbon is activated and regenerated by the powdered active carbon activation and regeneration system 2, waste gas is treated by the waste gas treatment system 3. The drying device is communicated with a granular active carbon activation regeneration system 1 and a powdery active carbon activation regeneration system 2, the water content of the waste active carbon is generally 65 percent or even higher, in order to keep the fluidity of the waste active carbon in an activation furnace in a good state, the water content of the waste active carbon is reduced to about 15 percent, and then the waste active carbon enters a regeneration furnace for desorption and reaction, so the waste active carbon needs to be dried preferentially, preferably, the drying device is a paddle dryer set, the shell of the paddle dryer is W-shaped, a jacket is arranged on the shell, two to four hollow stirring shafts are arranged in the shell, flowing heat transfer media (water vapor or hot water or heat conduction oil) are filled in the jacket and the hollow stirring shafts, wedge-shaped hollow paddles are densely arranged on the hollow stirring shafts, the shell is provided with a sealing end cover and an upper cover, the leakage of material dust is prevented, and material solvent vapor is, a baffle plate is arranged at the discharge port to ensure the material level height, so that the heat transfer surface is covered by the material to fully play a role.
The granular activated carbon activation regeneration system 1 comprises a first two-stage screw conveyor 11, a rotary kiln regeneration furnace 12, a first cooling conveying groove 13 and a first blower, wherein the first two-stage screw conveyor 11 is communicated with a material inlet of the rotary kiln regeneration furnace 12, the first cooling conveying groove 13 is communicated with a material outlet of the rotary kiln regeneration furnace 12, and an air outlet of the first blower is communicated with the rotary kiln regeneration furnace 12.
The powdered activated carbon activation regeneration system 2 comprises a two-stage screw conveyor II 21, a fluidized regeneration furnace 22, a cooling conveying trough II 23, a 1100 ℃ high-temperature dust remover 24 and a blower II, wherein the two-stage screw conveyor II 21 is communicated with a material inlet of the fluidized regeneration furnace 22, a material outlet of the fluidized regeneration furnace 22 is communicated with the 1100 ℃ high-temperature dust remover 24, the 1100 ℃ high-temperature dust remover 24 is communicated with the cooling conveying trough II 23, and an air outlet of the blower II is communicated with the fluidized regeneration furnace 22.
Waste gas treatment system 3 includes combustion chamber 31, exhaust-heat boiler 32, quench tower 33, dry-type reaction unit 34, sack cleaner 35, spray scrubber 36, draught fan 37, flue gas heater 38 and chimney 39, rotary kiln regenerator 12 intercommunication combustion chamber 31 entry, the 24 intercommunication combustion chamber 31 entries of 1100 ℃ high temperature dust remover, 31 export intercommunication exhaust-heat boiler 32 of combustion chamber, exhaust-heat boiler 32 intercommunication quench tower 33 intercommunication dry-type reaction unit 34, dry-type reaction unit 34 intercommunication sack cleaner 35, sack cleaner 35 intercommunication spray scrubber 36, the export of spray scrubber 36 communicates chimney 39 after passing through draught fan 37 and flue gas heater 38.
The combustion chamber 31 is integrally cast and formed by adopting a vertical cylindrical refractory material, the inner wall of the combustion chamber 31 is built with a high-aluminum refractory material, and the high-aluminum refractory material has the functions of fire resistance, corrosion resistance and thermal load impact resistance, the refractory material and the shell of the combustion chamber 31 are lined with a heat insulation layer, the temperature of the outer wall of the combustion chamber 31 is ensured to be less than 50 ℃ of the ambient temperature, the refractory material can resist the temperature of more than 1300 ℃, combustion-supporting fuel, air and waste gas enter the combustion chamber, the retention time of the waste gas and the settlement of large-particle dust in the combustion chamber are effectively ensured, the combustion efficiency is more than or equal to 99.9 percent, the incineration removal rate is more than or equal to 99.99 percent, and. The secondary air and the burner are arranged at the lower part of the combustion chamber 31, so that the temperature of the waste gas in the combustion chamber 31 reaches the standard and the waste gas has enough disturbance. The combustion chamber 31 has an exhaust gas outlet at an upper portion thereof, and exhausts the exhaust gas in the combustion chamber 31 through the exhaust gas outlet. An exhaust gas emergency discharge chimney is arranged at the top of the combustion chamber 31, when facilities break down, exhaust gas is discharged from the exhaust gas emergency discharge chimney, an automatic cover plate is arranged at the top of the exhaust gas emergency discharge chimney, and the exhaust gas emergency discharge chimney is forcibly opened in case of power failure.
The exhaust-heat boiler 32 comprises a steam drum and a large film wall cavity, the large film wall cavity is a vertical large film wall cavity, the flow speed of high-temperature exhaust gas is reduced, more dust is settled at the bottom of the vertical large film wall cavity, natural settlement of mineral dust is facilitated, abrasion of a furnace tube is prevented, and the steam drum body is formed by welding steel plates in a rolling mode. The end sockets are formed by stamping steel plates, and manhole devices are arranged on the end sockets at two ends. The steam pocket is internally provided with a demister as a steam-water separation device, and the demister is made of a steam-liquid filter screen. An evaporation zone ascending pipe is arranged on the steam pocket, and a baffle is arranged at the opening of the ascending pipe; the steam pocket is provided with a descending pipe orifice of the evaporation area, in order to prevent the descending pipe from carrying steam, a cross baffle is arranged on the descending pipe orifice of the evaporation area, and a water supply pipe is obliquely inserted into the descending pipe orifice, so that boiler feed water is directly sent into the descending pipe orifice after being preheated by boiler water. Two safety valve interfaces are arranged on the steam pocket to ensure that the pressure of the steam pocket is not overpressured. The normal water level of the steam drum is 50mm above the central line of the steam drum, the highest and lowest water levels are plus or minus 50mm of the normal water level, two on-site water level meters are arranged on the steam drum, in addition, two interfaces for water level alarming and control room water level indication are also arranged, and one interface for a water level transmitter is arranged for adjusting the water supply of the boiler to control the water level of the steam drum. In order to prevent the steam quality from being influenced by overhigh water level of the steam drum, an emergency water discharge pipe opening is arranged on the steam drum. In order to improve the quality of steam and reduce the salt concentration of furnace water, the inside of the steam drum is provided with a surface continuous blowdown pipe, a bottom periodic blowdown pipe and a trisodium phosphate dosing pipe opening for treating the furnace water, and the continuous blowdown rate is 2%. The steam drum is supported on the steel frame platform through two supports, one end of each support is fixed, and the other end of each support is movable and can freely expand along the axial direction. The outer wall of the exhaust-heat boiler 32 is made of a refractory casting material and composite silicon silicate.
The dry reaction device 34 is internally provided with a Venturi tube, lime powder and activated carbon powder pass through a feeding device and are conveyed to the throat part of the Venturi tube of the vertically arranged dry reaction device 34 through high-pressure air to meet gas-solid pairs of waste gas, the sectional area of the throat part is reduced, the speed of the waste gas is increased, high turbulence and gas-solid mixing are generated, the waste gas carries the lime powder and the activated carbon dust upwards in the inner tube of the dry reaction device 34 and then falls down through the outer tube, the gas-solid contact time is fully prolonged, dioxin and other hydrocarbon in the waste gas are fully contacted with the activated carbon, and the aim of removing the dioxin and other hydrocarbon is fulfilled.
The sack cleaner 35 adopts pulse resonance to remove dust, the shells inner wall of sack cleaner 35 carries out anticorrosive treatment, ensure that sack cleaner 35 has corrosion resistance, be provided with the filter chamber in the casing of sack cleaner 35, the access door, be provided with filter bag and pulse ash removal device in the filter chamber, sack cleaner 35 adopts star type tripper to unload the ash, the tripper lower part is provided with sealed ash bucket, ash bucket lower part is provided with the ash valve, ensure on-the-spot no raise dust, sack cleaner 35 deashing adopts differential pressure sensor control deashing effect, adopt the pulse deashing mode, the deashing system adopts DCS automatic control, sack cleaner 35 still is provided with the bypass, when sack cleaner 35 inlet temperature is not in the limit value scope, the bypass is opened, waste gas is passed through by the bypass, do not form fatal destruction to the sack when ensurein.
The spray washing tower 36 adopts a packed tower structure, deacidification liquid is sent to a spray system in the tower through a circulating pump, atomized into liquid drops of 1-3mm through a nozzle, and completely covers the whole tower body section to form a good atomization area, and is fully contacted with waste gas from bottom to top in a counter-current manner to complete a mass transfer process, so that the aim of purifying the smoke is fulfilled. The spray scrubber 36 is designed in a counter-current manner, and can support the falling spray droplets to a certain extent by rising the waste gas, thereby prolonging the retention time of the droplets in the absorption zone, enhancing the full contact between the waste gas and the absorbent, and improving the deacidification efficiency. A demister is also installed at the outlet of the spray washing tower 36 for separating the mist droplets carried in the clean flue gas.
The dry type waste heat boiler further comprises a gas storage tank, compressed air is stored in the gas storage tank, and the gas storage tank is communicated with the combustion chamber 31, the waste heat boiler 32, the quenching tower 33 and the dry type reaction device 34. It is convenient to supply the combustion chamber 31, the waste heat boiler 32, the quenching tower 33 and the dry reaction device 34 with air intensively.
And the device also comprises a steam storage tank, saturated steam is stored in the steam storage tank, one end of the steam storage tank is communicated with the flue gas heater 38, the rotary kiln regeneration furnace 12 and the fluidized regeneration furnace 22, and the other end of the steam storage tank is communicated with the waste heat boiler 32. The saturated steam generated by the waste heat boiler 32 is stored and sent to the flue gas heater 38, the rotary kiln regenerator 12 and the fluidized regenerator 22, so that the energy can be recycled, and the effects of energy conservation and emission reduction are improved.
The waste gas treatment system 3 further comprises an SNCR system 311, a quenching system 312, a semi-dry absorption system 313, a spraying system 314 and a water supply system 315, wherein the SNCR system 311 is connected with the waste heat boiler 32, the quenching system 312 is connected with the quenching tower 33, the semi-dry absorption system 313 is connected with the dry reaction device 34, the spraying system 314 is connected with the spray washing tower 36, one end of the water supply system 315 is connected with the waste heat boiler 32, and the other end of the water supply system 315 is connected with the flue gas heater 38. The SNCR system 311 comprises a urea pump, a urea solution tank and a urea configuration tank, wherein the urea pump, the urea solution tank and the urea configuration tank are sequentially connected in series, and the urea pump is communicated with the waste heat boiler 32; the quenching system 312 comprises a quenching water tank and a quenching pump, wherein one end of the quenching pump is connected with the quenching tower 33, and the other end of the quenching pump is connected with the quenching water tank; the semi-dry absorption system 313 comprises an activated carbon bin, a lime powder bin and a gas blower, wherein the gas blower is communicated with the activated carbon bin and the lime powder bin and then is introduced into the dry reaction device 34; the spray system 314 comprises an alkaline solution pool and a spray pump, one end of the spray pump is connected with the alkaline solution pool, and the other end of the spray pump is connected with the spray washing tower 36; the water supply system 315 includes a soft water tank and a water supply pump, one end of the soft water tank is communicated with the flue gas heater 38, the other end of the soft water tank is communicated with the water supply pump, the water supply pump is also communicated with the waste heat boiler 32, the temperature of the waste gas is recovered through the waste heat boiler 32, and the energy is conveniently provided for the flue gas heater 38.
The number of the spray scrubber 36 is 2. The waste gas is sprayed and washed twice, so that the waste gas can be better purified.
As shown in fig. 1 to 5, a method for activating and regenerating activated carbon comprises the following steps:
the method comprises the following steps: granular waste activated carbon is conveyed into a rotary kiln regeneration furnace 12 through a two-stage screw conveyor I11, an air feeder I sends air into the rotary kiln regeneration furnace 12, a steam storage tank sends saturated steam into the rotary kiln regeneration furnace 12, the rotary kiln regeneration furnace 12 carries out activation regeneration treatment, the temperature of an activated carbon finished product after the activation regeneration treatment is 900 ℃, the granular activated carbon finished product is cooled and conveyed through a cooling conveying tank I13 and then is subjected to vacuum packaging, and waste gas generated in the activation regeneration process is sent into a waste gas treatment system 3; step two: the powdery waste active carbon is conveyed into a fluidized regeneration furnace 22 through a two-stage screw conveyor II 21, an air feeder II is the fluidized regeneration furnace 22 and sends air, a steam storage tank is the fluidized regeneration furnace 22 and sends saturated steam, the fluidized regeneration furnace 22 carries out activation regeneration treatment, the temperature of an active carbon finished product after the activation regeneration treatment is 900 ℃, the treated mixed gas enters a 1100 ℃ high-temperature dust remover 24 to strip the powdery active carbon finished product from waste gas, then the powdery active carbon finished product is sent into a cooling conveying groove II 23 to be cooled and conveyed and then is subjected to vacuum packaging, and the stripped waste gas is sent into a waste gas treatment system 3; step three: intensively introducing the waste gas in the first step and the waste gas in the second step into a combustion chamber 31 for full combustion and oxidation, wherein the combustion temperature is 1100 ℃, and the combustion time of the waste gas is more than 2 seconds; then, enabling the waste gas to enter a waste heat boiler 32, spraying urea into a hearth to perform SNCR (selective non-catalytic reduction) denitration treatment, and reducing the temperature of the waste gas to 550 ℃; then, the waste gas at 550 ℃ enters a quenching tower, the temperature is reduced to 200 ℃ within 1 second, the regeneration of dioxin is effectively inhibited, in addition, some sparks in the waste gas are extinguished by the sprayed water mist, and the subsequent cloth bag is protected from being burnt out; then the waste gas with the temperature of 200 ℃ enters a dry type reaction device 34 for purification treatment; and then the waste gas enters a bag-type dust collector 35 for dust removal treatment, specifically, lime powder, activated carbon powder and flue gas from the dry reaction device 34 enter the bag-type dust collector 35 together, the lime powder and the activated carbon powder are intercepted by a filter bag, stay on the surface of the filter bag, continue to react with acidic gas, and simultaneously adsorb heavy metals and dioxin in the waste gas, after the blowing time is up, the lime powder and the activated carbon powder are blown by pulses and fall into a dust hopper, then the waste gas enters a spray washing tower 36 for spray washing, and finally the waste gas is heated to 130 ℃ by an induced draft fan 37 and a flue gas heater 38 and then is discharged through a chimney 39. Preferably, step one and step two are performed simultaneously. Preferably, the first step is preceded by a drying treatment step: the paddle dryer set carries out drying treatment on waste activated carbon (granular and powdery), and two main processes are carried out: 1) and (3) an evaporation process: the moisture on the surface of the material is vaporized, and the moisture is moved into the medium from the surface of the material because the water vapor pressure on the surface of the material is lower than the water vapor partial pressure in the medium (gas); 2) and (3) extrusion diffusion process: the method is a mass transfer process closely related to vaporization, when the moisture on the surface of a material is evaporated, the humidity on the surface of the formed material is lower than the internal humidity of the material, at the moment, the moisture is transferred to the surface from the inside by a driving force of heat, the water content of the waste activated carbon after drying treatment is reduced to 15%, and the residual heat of air entering a blade drying machine set reaches 130 ℃. Preferably, the exhaust heat boiler 32 recycles the temperature of the exhaust gas to power the flue gas heater 38 for heating before the exhaust gas is exhausted. Preferably, the saturated steam generated by the waste heat boiler 32 is stored and sent to the flue gas heater 38, the rotary kiln regenerator 12 and the fluidized regenerator 22 for recycling.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An activated carbon's activation regenerating unit which characterized in that: including granular active carbon activation regeneration system (1), powdered active carbon activation regeneration system (2) and exhaust-gas treatment system (3), granular active carbon activation regeneration system (1) and powdered active carbon activation regeneration system (2) all are linked together with exhaust-gas treatment system (3), and granular useless active carbon is through granular active carbon activation regeneration system (1) activation regeneration back, and waste gas is handled by exhaust-gas treatment system (3), and likepowder useless active carbon is through powdered active carbon activation regeneration system (2) activation regeneration back, and waste gas is handled by exhaust-gas treatment system (3).
2. The activated carbon activating and regenerating device according to claim 1, characterized in that: granular activated carbon activation regeneration system (1) includes two-stage screw conveyer (11), rotary kiln regenerator (12), cooling conveyer trough (13) and forced draught blower (1), two-stage screw conveyer (11) are linked together with the material entry of rotary kiln regenerator (12), cooling conveyer trough (13) are linked together with the material export of rotary kiln regenerator (12), the air outlet intercommunication rotary kiln regenerator (12) of forced draught blower (one).
3. The activated carbon activating and regenerating device according to claim 2, characterized in that: the powdered activated carbon activation regeneration system (2) comprises a two-stage screw conveyor II (21), a fluidized regeneration furnace (22), a cooling conveying groove II (23), a 1100 ℃ high-temperature dust remover (24) and a blower II, wherein the two-stage screw conveyor II (21) is communicated with a material inlet of the fluidized regeneration furnace (22), a material outlet of the fluidized regeneration furnace (22) is communicated with the 1100 ℃ high-temperature dust remover (24), the 1100 ℃ high-temperature dust remover (24) is communicated with the cooling conveying groove II (23), and an air outlet of the blower II is communicated with the fluidized regeneration furnace (22).
4. The activated carbon activating and regenerating device according to claim 3, characterized in that: the waste gas treatment system (3) comprises a combustion chamber (31), a waste heat boiler (32), a quench tower (33), a dry reaction device (34), a bag-type dust remover (35), a spray washing tower (36), an induced draft fan (37), a flue gas heater (38) and a chimney (39), the rotary kiln regenerative furnace (12) is communicated with the inlet of the combustion chamber (31), the 1100 ℃ high-temperature dust remover (24) is communicated with the inlet of the combustion chamber (31), the outlet of the combustion chamber (31) is communicated with a waste heat boiler (32), the waste heat boiler (32) is communicated with a quenching tower (33), the quenching tower (33) is communicated with a dry reaction device (34), the dry reaction device (34) is communicated with a bag-type dust remover (35), the bag-type dust remover (35) is communicated with a spray washing tower (36), and the outlet of the spray washing tower (36) is communicated with a chimney (39) through an induced draft fan (37) and a flue gas heater (38).
5. The activated carbon activating and regenerating device according to claim 4, characterized in that: the device is characterized by further comprising a gas storage tank, wherein compressed air is stored in the gas storage tank, and the gas storage tank is communicated with the combustion chamber (31), the waste heat boiler (32), the quenching tower (33) and the dry type reaction device (34).
6. The activated carbon activating and regenerating device according to claim 5, characterized in that: the device is characterized by further comprising a steam storage tank, saturated steam is stored in the steam storage tank, one end of the steam storage tank is communicated with the flue gas heater (38), the rotary kiln regenerator (12) and the fluidized regenerator (22), and the other end of the steam storage tank is communicated with the waste heat boiler (32).
7. The activated carbon activating and regenerating device according to claim 6, characterized in that: the waste gas treatment system (3) further comprises an SNCR system (311), a quenching system (312), a semi-dry absorption system (313), a spraying system (314) and a water supply system (315), wherein the SNCR system (311) is connected with the waste heat boiler (32), the quenching system (312) is connected with the quenching tower (33), the semi-dry absorption system (313) is connected with the dry reaction device (34), the spraying system (314) is connected with the spraying washing tower (36), one end of the water supply system (315) is connected with the waste heat boiler (32), and the other end of the water supply system (315) is connected with the flue gas heater (38).
8. The activated carbon activating and regenerating device according to claim 4, characterized in that: the number of the spray washing towers (36) is 2.
9. An activation regeneration method using the activated carbon activation regeneration apparatus according to claim 7, comprising the steps of:
the method comprises the following steps: the granular active carbon activation regeneration system (1) carries out activation regeneration treatment on granular waste active carbon;
step two: the powdered activated carbon activation regeneration system (2) carries out activation regeneration treatment on the powdered waste activated carbon;
step three: the waste gas treatment system (3) carries out waste gas treatment on the waste gas discharged from the granular activated carbon activation regeneration system (1) and the powdered activated carbon activation regeneration system (2), so that the waste gas reaches the standard and is discharged.
10. The activated carbon activation and regeneration method according to claim 9, comprising the following steps:
the method comprises the following steps: granular waste activated carbon is conveyed into a rotary kiln regeneration furnace (12) through a two-stage screw conveyor I (11), a blower I sends air into the rotary kiln regeneration furnace (12), a steam storage tank sends saturated steam into the rotary kiln regeneration furnace (12), the rotary kiln regeneration furnace (12) carries out activation regeneration treatment, a granular activated carbon finished product is cooled and conveyed through a cooling conveying tank I (13) and then is subjected to vacuum packaging, and waste gas generated in the activation regeneration process is sent into a waste gas treatment system (3);
step two: conveying powdery waste activated carbon into a fluidized regeneration furnace (22) through a second two-stage screw conveyor (21), feeding air into the fluidized regeneration furnace (22) by using a second air feeder, feeding saturated steam into the fluidized regeneration furnace (22) by using a steam storage tank, carrying out activation regeneration treatment on the fluidized regeneration furnace (22), feeding treated mixed gas into a 1100 ℃ high-temperature dust remover (24) to strip a powdery activated carbon finished product from waste gas, then feeding the powdery activated carbon finished product into a second cooling conveying tank (23), cooling and conveying the powdery activated carbon finished product, carrying out vacuum packaging, and feeding the stripped waste gas into a waste gas treatment system (3);
step three: the waste gas in the first step and the waste gas in the second step are intensively introduced into a combustion chamber (31) for full combustion and oxidation, the combustion temperature is 1100 ℃, and the combustion time of the waste gas is more than 2 seconds; then, the waste gas enters a waste heat boiler (32) for denitration treatment, and the temperature of the waste gas is reduced to 550 ℃; then, the waste gas with the temperature of 550 ℃ enters a quenching tower and is cooled to 200 ℃ within 1 second; then the waste gas with the temperature of 200 ℃ enters a dry type reaction device (34) for purification treatment; then enters a bag-type dust remover (35) for dust removal treatment, then enters a spray washing tower (36) for spray washing, and finally is exhausted through a chimney (39) after being heated by induced draft fan (37) and flue gas heater (38).
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| CN111689499A (en) * | 2020-06-29 | 2020-09-22 | 舒克孝 | Uniform internal heat stirring type activation kiln |
| CN111715199A (en) * | 2020-07-17 | 2020-09-29 | 宁夏宜鑫环保科技有限公司 | Energy-saving activation regeneration system suitable for dangerous waste carbon with different particle sizes |
| CN112619630A (en) * | 2021-01-15 | 2021-04-09 | 江苏韬略环保科技有限公司 | Useless active carbon regeneration system |
| CN113441123A (en) * | 2021-07-07 | 2021-09-28 | 江苏磊金环境工程有限公司 | Thermal desorption regeneration production line and process for saturated activated alumina pellets |
| CN113694908A (en) * | 2021-08-16 | 2021-11-26 | 宁夏宁疆疆泰炭材料科技有限公司 | Environment-friendly regenerated activated carbon production equipment and process |
| CN113968580A (en) * | 2021-10-13 | 2022-01-25 | 江苏京颐环保科技有限公司 | Powdered activated carbon regeneration process based on activation furnace |
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| CN115318264A (en) * | 2022-07-17 | 2022-11-11 | 成都环服科技有限责任公司 | Granular waste activated carbon countercurrent rotary kiln pyrolysis regeneration process |
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