CN113398878A - Activated carbon for ecological restoration and preparation device and preparation method thereof - Google Patents
Activated carbon for ecological restoration and preparation device and preparation method thereof Download PDFInfo
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- CN113398878A CN113398878A CN202110480778.7A CN202110480778A CN113398878A CN 113398878 A CN113398878 A CN 113398878A CN 202110480778 A CN202110480778 A CN 202110480778A CN 113398878 A CN113398878 A CN 113398878A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 238000002360 preparation method Methods 0.000 title description 12
- 238000005245 sintering Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000006004 Quartz sand Substances 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000004927 clay Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 18
- 238000012216 screening Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 13
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 6
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 239000011630 iodine Substances 0.000 claims description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 3
- 239000002737 fuel gas Substances 0.000 claims 2
- 238000003825 pressing Methods 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 5
- 239000002244 precipitate Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 11
- 238000000746 purification Methods 0.000 description 7
- 238000005336 cracking Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Dispersion Chemistry (AREA)
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Abstract
The invention discloses an activated carbon for ecological restoration, which comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is (10-20) to (10-25): (8-15): (40-60); the invention also discloses a device and a method for preparing the activated carbon for ecological restoration; the invention can quickly precipitate, quickly crack and fully mix with the sludge at the bottom, and finally play the role of active carbon, thereby finally restoring the water quality to the ecological system.
Description
Technical Field
The invention relates to the technical field of restoring ecology of rivers, lakes and bottom of coastal waters, in particular to activated carbon for ecological restoration and a preparation device and a preparation method thereof.
Background
At present, countries in the world including China have different industrialization time from decades to hundreds of years. In a long industrial process, various toxic and harmful substances are diffused into the air and enter a water body to be deposited on the water bottom to pollute rivers, lakes and seas. With the increasing accumulation amount, the natural degradation capability is exceeded. Therefore, in order to improve the livelihood, the pollution of rivers, lakes and bottom of water along the sea must be solved while the VOCs are treated, tap water is purified and sewage is treated. The invention belongs to the technical field of restoring natural ecology of rivers, lakes and seaside water bottoms, and ecological restoration or ecological restoration refers to restoring a natural ecological system according to natural rules by an artificial method. "ecological remediation" is a process that attempts to recreate, guide or accelerate the natural evolution process, and is far beyond the goal of planting trees to stabilize water and soil loss areas, and not just planting various local plants. Although we have no ability to recover the true native system, we can help nature, provide the basic conditions, then let it accelerate evolution, and finally achieve complete repair. Therefore, the aim of ecological restoration is not to plant as many species as possible and recover vegetation, but to create basic conditions to promote the recovery of the ecosystem and enter the virtuous cycle of the next stage, and activated carbon is widely used in various industries, mainly used for air purification, purified water treatment, decolorization and the like, so that the activated carbon is also commonly used for ecological water quality purification, but the existing activated carbon has the following problems in ecological water quality purification:
1. due to the high density of deep water, especially seawater, the existing activated carbon is difficult to reach and sink.
2. The existing active carbon has low sinking speed and is unsteady in the sinking process, and finally influences the purification of the water quality of the seabed.
3. The existing activated carbon can not crack at the bottom of a water body or the bottom of a sea for half a year, can not be fully mixed with sludge at the bottom of the water body without cracking, can not play the due role of the activated carbon, can not treat bottom pollution naturally, and can not recover the original ecological system.
So there is a need for improvement.
Disclosure of Invention
The invention aims to provide activated carbon for ecological restoration and a preparation device and a preparation method thereof, and aims to solve the problems that the activated carbon cannot sink, cannot be separated for a long time, cannot be fully mixed with sludge at the bottom of a seabed and cannot play a role finally in the activated carbon in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the activated carbon for ecological restoration comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is (10-20) to (10-25): (8-15):(40-60).
Preferably, in order to ensure the precipitation efficiency at the later stage after the final purification effect, the technical index range of the activated carbon is required to be 500-1200mg/g of iodine adsorption value and 90-200mg/g of methylene blue adsorption value.
As the best scheme, the technical index range of the activated carbon is 1050mg/g of iodine adsorption value 950-.
The invention also discloses a preparation device for preparing the claimed activated carbon for ecological restoration, which comprises the following equipment:
a mixer for mixing the raw materials;
a hydraulic forming machine for forming the mixed materials;
the screening device is used for screening the hydroformed material;
the rotary sintering furnace is used for sintering the sieved materials;
the heat exchange device is used for carrying out heat exchange;
wherein a screw conveyor is arranged between the mixing machine and the hydraulic forming machine, the output end of the hydraulic forming machine is connected with the input end of a screening device, the output end of the screening device is connected with the rotary sintering furnace through a vibrating feeder, a combustion chamber is arranged in the rotary sintering furnace, a discharge chamber and a gas conveying channel for providing a heat source for the combustion chamber are arranged on the side edge of the combustion chamber, the discharging chamber is also connected with a cooling conveying device, the other end of the cooling conveying device is connected with a lifter, the other end of the hoister is connected with a product bin, the heat exchange device comprises a heat exchange chamber communicated with the rotary sintering furnace, the heat exchange chamber is connected with a dust remover, the dust remover is connected with an induced draft fan, the induced draft fan is connected with a tail gas removal purification system, and the screening device is further connected with a residual material collecting bin connected with a mixing machine or a spiral conveyer.
Preferably, in order to pre-collect carbon powder and protect the smoothness of a flue system, a settling chamber which is used for pre-collecting carbon powder and can protect the smoothness of the flue system is arranged between the vibrating feeder and the rotary sintering furnace, and the settling chamber is communicated with the heat exchange chamber.
The invention also discloses a preparation method of the activated carbon for ecological restoration, which is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, adding the activated carbon powder, the clay, the quartz sand, the water and the sintering agent which meet the process requirements into a mixer according to a preset proportion for mixing, starting a motor program of the mixer, and setting a low-rotation speed mode of mixing at 1 circle for 25-30 seconds; the mixed materials are sent to the next procedure by a screw conveyer;
s2, forming: molding by using a hydraulic molding machine, wherein the gauge pressure of the hydraulic molding machine is controlled at 100-150kg/cm2, then removing the layering granules from the hydraulic molding machine by using a screening device, and recovering the screened residual materials to a mixer or a screw conveyor for re-layering;
s3, adding the qualified layering material into a rotary sintering furnace through a vibrating feeder, driving away water in the furnace in a sintering mode of reverse contact with high-temperature gas in a rotary moving mode, and simultaneously improving the adsorption performance and mechanical strength of the product;
and S4, lifting the product meeting the performance to a product bin through a lifter after cooling, and packaging into 50-500 or 1000 tons of single packaging bags, wherein the packaging bags are all woven bag lining plastic bags or plastic bags coated inside.
Preferably, the mixing manner in the step S1 is batch mixing, so that a batch mixer is required, and the mixing time is 8 to 20 minutes and the mixing temperature is 15 to 55 ℃.
In order to ensure the quality of the products in the later period, the rotation speed of the rotary heating furnace is required to be 0.5-2.5rpm in step S3, the temperature of the gas inlet is required to be 100-220 ℃, the temperature of the gas outlet is required to be 500-650 ℃, and the heating time is 45-75 min.
The optimal scheme is that the mixing time is 12-15 minutes, and the mixing temperature is 35-45 ℃.
As an optimal scheme, the optimal heating time of the rotary heating furnace in the step S3 is 55-65min, and the optimal heating temperature is 150-560 ℃.
Compared with the prior art, the invention has the following beneficial effects: the invention can quickly precipitate, quickly crack and fully mix with the sludge at the bottom, and finally play the role of active carbon, thereby finally restoring the water quality to the ecological system.
Drawings
Fig. 1 is a schematic connection diagram of an apparatus for preparing activated carbon for ecological restoration in example 1.
In the figure: a mixer 1; a hydraulic forming machine 2; a screening device 3; a rotary sintering furnace 4; a heat exchange device 5; a screw conveyor 6; a vibrating feeder 7; a combustion chamber 8; a discharge chamber 9; a gas delivery duct 10; a cooling conveyor 12; a hoist 11; a product bin 13; a heat exchange chamber 14; a dust remover 15; an induced draft fan 16; a tail gas removal purification system 17; a residue collection bin 18; a settling chamber 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, an embodiment of the present invention: the activated carbon for ecological restoration comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is (10-20) to (10-25): (8-15):(40-60).
Preferably, in order to ensure the precipitation efficiency at the later stage after the final purification effect, the technical index range of the activated carbon is required to be 500-1200mg/g of iodine adsorption value and 90-200mg/g of methylene blue adsorption value.
As the best scheme, the technical index range of the activated carbon is 1050mg/g of iodine adsorption value 950-.
The embodiment also discloses a preparation device for preparing the ecological restoration activated carbon, which comprises the following equipment:
a mixer 1 for mixing the raw materials;
a hydraulic molding machine 2 for molding the mixed material;
the screening device 3 is used for screening the hydroformed material;
a rotary sintering furnace 4 for sintering the sieved material;
a heat exchange device 5 for heat exchange;
wherein, a screw conveyor 6 is arranged between the mixing machine 1 and the hydraulic forming machine 2, the output of the hydraulic forming machine 2 is connected with the input end of a screening device 3, the output end of the screening device 3 is connected with a rotary sintering furnace 4 through a vibrating feeder 7, a combustion chamber 8 is arranged in the rotary sintering furnace 4, the side edge of the combustion chamber 8 is provided with a discharge chamber 9 and a gas conveying channel 10 which provides a heat source for the combustion chamber 8, the discharge chamber 9 is also connected with a cooling conveying device 12, the other end of the cooling conveying device 12 is connected with a lifting machine 11, the other end of the lifting machine 11 is connected with a product bin 13, the heat exchange device 5 comprises a heat exchange chamber 14 communicated with the rotary sintering furnace 4, the heat exchange chamber 14 is connected with a dust remover 15, the dust remover 15 is connected with an induced draft fan 16, and the induced draft fan 16 is connected with a tail, the screening device 3 is also connected to a waste collection bin 18 which is connected to the mixer 1 or the screw conveyor 6.
Remove tail gas clean system 17 through setting up and carry out spleen exhaust treatment to tail gas, just directly discharge when tail gas is up to standard, then discharge after handling not up to standard, design relatively conveniently discharges qualified tail gas like this, realizes the processing of flexibility.
Preferably, a settling chamber 19 which is used for pre-collecting the carbon powder and can protect the flue system from being unblocked is arranged between the vibrating feeder 7 and the rotary sintering furnace 4, and the settling chamber 19 is communicated with the heat exchange chamber 14.
The embodiment also discloses a preparation method of the activated carbon for ecological restoration, which specifically comprises the following steps:
s1, adding activated carbon powder, clay, quartz sand, water and sintering agent which meet the process requirements into a mixer 1 according to a preset proportion for mixing, starting a motor program of the mixer 1, and setting a low-rotation speed mode of mixing for 1 circle in 25-30 seconds; the mixed materials are sent to the next procedure by a screw conveyor 6;
s2, forming: molding by adopting a hydraulic molding machine 2, controlling the gauge pressure of the hydraulic molding machine 2 at 100-;
s3, adding the qualified layering material into a rotary sintering furnace 4 through a vibrating feeder 7, driving away water in the furnace in a sintering mode of reverse contact with high-temperature gas in a rotary moving mode, and simultaneously improving the adsorption performance and mechanical strength of the product;
and S4, lifting the products meeting the performance to a product bin 13 through a lifter 11 after cooling, and packaging into 50-500 or 1000 tons of single packaging bags, wherein the packaging bags are woven bag lining plastic bags or plastic bags coated inside.
Preferably, the mixing manner in step S1 is batch mixing, so it is necessary to use a batch mixer 1, and the mixing time is 8 to 20 minutes, and the mixing temperature is 15 to 55 ℃.
Considering as the best scheme, in order to ensure the quality of the later product, in step S3, the rotation speed of the rotary heating furnace is required to be 0.5-2.5rpm, the heating temperature is required to be 220 ℃ using the temperature of the gas inlet, the temperature of the gas outlet is required to be 500 ℃ using the temperature of 650 ℃, and the heating time is 45min-75min, in this embodiment, in step S3, the rotation speed of the rotary heating furnace is required to be 2rpm, the heating temperature is required to be 200 ℃ using the temperature of the gas inlet, the temperature of the gas outlet is required to be 550 ℃, and the heating time is 60 min.
The optimal scheme is that the mixing time is 12-15 minutes, and the mixing temperature is 35-45 ℃.
As an optimal solution, the optimal heating time of the rotary heating furnace in step S3 is 55-65min, the optimal heating temperature is 150-560 ℃, the optimal heating time of the rotary heating furnace in this embodiment is 60min, and the optimal heating temperature is 450 ℃.
Example 2:
the embodiment provided by the invention comprises the following steps: the activated carbon for ecological restoration comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the ratio of the clay to the quartz sand to the sintering agent to the powdered activated carbon is (15: 12): 15:50.
Example 3:
the embodiment provided by the invention comprises the following steps: the activated carbon for ecological restoration comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is 18: 22: 10:45.
Example 4:
the embodiment provided by the invention comprises the following steps: the activated carbon for ecological restoration comprises the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is 18: 22: 11:55.
The following is a table of experimental comparison data between this example and the existing common activated carbon:
the comparison shows that the sinking speed of the active carbon for ecological restoration prepared by the invention is more than 160mm/s, the cracking time is about 2000hr, wherein 90% is 2400hr, 8% is 2000hr, and 2% is 20hr (because micro damage comes from machinery, pressure and the like), and the removal rate of detected heavy metals is 15-20 times that of the common active carbon, and the color and luster are obviously reduced, so the invention has the advantages of rapid precipitation, rapid cracking, full mixing with sludge at the bottom, and finally playing the role of the active carbon, and finally restoring the water quality to the ecological system.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The activated carbon for ecological restoration is characterized by comprising the following raw materials: the composite material comprises clay, quartz sand, sintering agent and powdered activated carbon, wherein the proportion of the clay, the quartz sand, the sintering agent and the powdered activated carbon is (10-20) to (10-25): (8-15):(40-60).
2. The activated carbon for ecological restoration according to claim 1, wherein: the technical index range of the active carbon is required to be 500-1200mg/g of iodine adsorption value and 90-200mg/g of methylene blue adsorption value.
3. The activated carbon for ecological restoration according to claim 2, wherein: the technical index range of the activated carbon is 1050mg/g of iodine adsorption value 950-.
4. A manufacturing apparatus for manufacturing the activated carbon for ecological restoration of claim 1, characterized in that: the device comprises the following equipment:
a mixer (1) for mixing the raw materials;
a hydraulic forming machine (2) for forming the mixed materials;
a screening device (3) for screening the hydroformed material;
a rotary sintering furnace (4) for sintering the sieved material;
heat exchange means (5) for heat exchange;
wherein a screw conveyor (6) is arranged between the mixing machine (1) and the hydraulic forming machine (2), the output of the hydraulic forming machine (2) is connected with the input end of the screening device (3), the output end of the screening device (3) is connected with the rotary sintering furnace (4) through a vibrating feeder (7), a combustion chamber (8) is arranged in the rotary sintering furnace (4), a discharge chamber (9) and a gas conveying channel (10) for providing a heat source for the combustion chamber (8) are arranged at the side edge of the combustion chamber (8), a cooling conveying device (12) is also connected on the discharge chamber (9), the other end of the cooling conveying device (12) is connected with a hoisting machine (11), the other end of the hoisting machine (11) is connected with a product bin (13), the heat exchange device (5) comprises a heat exchange chamber (14) communicated with the rotary sintering furnace (4), be connected with dust remover (15) on heat transfer chamber (14), be connected with draught fan (16) on dust remover (15), draught fan (16) are connected with tail gas clean system (17) of going, still are connected with on screening plant (3) and mix clout collection bin (18) that machine (1) or screw conveyer (6) are connected.
5. The apparatus for preparing activated carbon for ecological restoration according to claim 4, characterized in that: a settling chamber (19) which is used for pre-collecting carbon powder and can protect a flue system to be smooth is arranged between the vibrating feeder (7) and the rotary sintering furnace (4), and the settling chamber (19) is communicated with the heat exchange chamber (14).
6. A method for preparing activated carbon for ecological restoration, which comprises using the apparatus for preparing activated carbon for ecological restoration according to any one of claims 4 to 5, characterized in that: the method specifically comprises the following steps:
s1, adding activated carbon powder, clay, quartz sand, water and sintering agent which meet the process requirements into a mixer (1) according to a preset proportion for mixing, starting a motor program of the mixer (1), and setting a low-rotation speed mode of mixing for 1 circle in 25-30 seconds; the mixed materials are sent to the next procedure through a screw conveyor (6);
s2, forming: molding by adopting a hydraulic molding machine (2), controlling the gauge pressure of the hydraulic molding machine (2) at 100-150kg/cm2, removing the pressed granules from the hydraulic molding machine (2) through a screening device (3), and recovering the screened residual materials to a mixer (1) or a screw conveyor (6) for re-pressing;
s3, adding the qualified layering material into a rotary sintering furnace (4) through a vibrating feeder (7), driving away water in the furnace in a sintering mode of reverse contact with high-temperature gas in a rotary moving mode, and simultaneously improving the adsorption performance and mechanical strength of the product;
and S4, lifting the products meeting the performance to a product bin (13) by a lifter (11) after cooling, and packaging into 50-500 or 1000 tons of single packaging bags, wherein the packaging bags are woven bags lined with plastic bags or plastic-coated inside the plastic bags.
7. The method for preparing activated carbon for ecological restoration according to claim 6, wherein the method comprises the following steps: the mixing manner in the step S1 is batch mixing, so a batch mixer (1) is required, and the mixing time is 8-20 minutes, and the mixing temperature is 15-55 ℃.
8. The method for preparing activated carbon for ecological restoration according to claim 6, wherein the method comprises the following steps: in step S3, the rotation speed of the rotary heating furnace is required to be 0.5-2.5rpm, the heating temperature is required to be 100-220 ℃ by adopting the temperature of the fuel gas inlet, the temperature of the fuel gas outlet is required to be 500-650 ℃, and the heating time is 45-75 min.
9. The method for preparing activated carbon for ecological restoration according to claim 7, wherein the method comprises the following steps: the mixing time is 12-15 minutes, and the mixing temperature is 35-45 ℃ is the best.
10. The method for preparing activated carbon for ecological restoration according to claim 8, wherein the method comprises the following steps: in step S3, the optimum heating time of the rotary heating furnace is 55-65min, and the optimum heating temperature is 150-560 ℃.
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