CN104258808A - Method and system for increasing specific surface area of sludge biochar - Google Patents
Method and system for increasing specific surface area of sludge biochar Download PDFInfo
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- CN104258808A CN104258808A CN201410442329.3A CN201410442329A CN104258808A CN 104258808 A CN104258808 A CN 104258808A CN 201410442329 A CN201410442329 A CN 201410442329A CN 104258808 A CN104258808 A CN 104258808A
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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
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- 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
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- 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
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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- 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
- C01B32/39—Apparatus for the preparation thereof
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4893—Residues derived from used synthetic products, e.g. rubber from used tyres
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a method and a system for increasing specific surface area of sludge biochar. The method for increasing the specific area of the sludge biochar comprises the following steps: stirring and mixing dried sludge with waste broken polystyrene plastic in a ratio and heating to ensure that the waste polystyrene plastic is molten and shrinks in sludge and is relatively uniformly attached to sludge particle surfaces, and then carrying out direct compression moulding; and feeding the sludge particles subjected to compression moulding into a pyrolysis carbonization system for carbonizing treatment, thereby obtaining sludge pyrolysis biochar with a good pore structure. The method and the system for increasing the specific surface area of sludge biochar have the advantages that the waste polystyrene plastic is utilized for increasing the specific surface area of sludge pyrolysis biochar, the specific surface area of pyrolysis biochar obtained by the method and the system can be increased by 100%-400% compared with biochar pyrolyzed by sludge alone under the same conditions, transitional pores of the prepared biochar extend inward, liquid phase diffusion performance is high, the adsorption property of biochar to macromolecule organic matter is improved, and the utilization value of sludge biochar is greatly increased.
Description
Technical field
The present invention discloses a kind of method and system improving sludge organism charcoal specific area, divide by International Patent Classification (IPC) (IPC) and belong to sludge resource technical field of comprehensive utilization, especially relate to the sludge organism charcoal utilizing mud and polystyrene waste plastics to be mixed with high-specific surface area.
Background technology
In recent years, due to the huge applications prospect of pyrolyzing sludge charcoal in agricultural and environment and the increasing remittance reduction of discharging effect to soil carbon, the study hotspot of agrology and environmental science is become.Domestic and international research shows: charcoal contains the nutrient needed for a large amount of plant, can promote the circulation of soil nutrient and the growth of plant; Charcoal generally in alkalescence, uses acidity and toxic element content that charcoal can reduce soil, as the toxicity of aluminium and heavy metal on plants; Charcoal surface is containing oxygen-containing functional groups such as abundant-COOH ,-COH and-OH, and the surface negative charge that they produce makes charcoal have higher cation exchange capacity (CEC) (CEC), can improve the CEC of soil after using; Charcoal has very strong adsorption capacity to organic pollution and heavy metals etc. such as agricultural chemicals, can be used for the reparation of contaminated soil; Charcoal has the pore structure of height, can increase voidage and the water holding capacity of soil, reduces the soil weight, favourable plant root growth; Again because it has higher chemistry and biology stability, the ability of stronger opposing microbial decomposition, enhances the carbon solidification effect of soil, reduces carbon dioxide discharging again to air.In addition, if by charcoal, for adsorbing organic matter in waste water and nutrient N, P, K etc. also will be the good approach that a recycling sludge utilizes.In view of having above plurality of advantages, charcoal is called as " black gold ".
China's municipal sludge sewage sludge contains a large amount of organic matter and cellulignin etc., and carbon content is high, is the cheap raw material preparing charcoal.But because in mud, the ash content of coal is high, complicated, the charcoal specific area that pyrolysis produces is lower, have impact on the serviceability of sludge organism charcoal.For improving the pore structure of sludge organism charcoal, increasing specific surface area, numerous researcher explores, and mainly concentrates on two aspects, and one is in pyrolysis charring process, add chemical reagent, as hydrogen peroxide, alkali metal, ZnCl2 etc., as patent CN101974359A etc.; Two is pyrolysis charcoal is carried out physically activated or chemical activation further, to obtain good pore structure and absorption property, as patent CN1644495A, CN103495399A and CN102936012A etc.Above-mentioned process program ubiquity flow process is complicated, easily cause the deficiencies such as secondary environmental pollution, and manufacturing cost is higher for the charcoal in low-end applications field.
On the other hand, society, plastic products have been widely used in producing and the every field of life, and polystyrene is as one of 4 large general-purpose plastics, and its output and consumption figure are ascendant trend year by year.Polystyrene, as a kind of macromolecular material, has that toxicity is lower, fusing point is higher, plasticity is strong, produce the features such as easy, is the preferred material preparing disposable snack box.But the cutlery box degradation cycle manufactured due to polystyrene is extremely long, and in normal circumstances, its degradation cycle reaches about 200 years, in long time, still keep Form of Polymer constant.Therefore, the disposable plastic fast food container being difficult to degrade causes one of " white pollution " large arch-criminal just.Method mainly landfill method and the burning method of conventional process polystyrene waste plastics, but easily cause thus occupy cultivated land, polluted source and discharge the series of problems such as a large amount of poisonous fumes.Therefore, the recycling tool studying polystyrene waste plastics is of great significance.At present, the content that relevant mud prepares charcoal in conjunction with polystyrene rarely has research and report both at home and abroad.
Summary of the invention
The deficiency of charcoal treatment process is prepared for existing pyrolyzing sludge, the present invention proposes a kind of method and system improving pyrolyzing sludge charcoal specific area, polystyrene waste plastics is utilized to solve pyrolyzing sludge charcoal specific area less, the problem of pore structure difference, realizes the double goal improving sludge organism charcoal specific area and process polystyrene waste plastics simultaneously.
For achieving the above object, the present invention is achieved by the following technical solutions:
Improve a method for sludge organism charcoal specific area, implementation step comprises:
(1) polystyrene waste plastics is carried out break process;
(2) mud that Sewage Plant mechanical dehydration produces is carried out drying process;
(3) carried out in proportion being uniformly mixed and heating by the polystyrene waste plastics after dried mud and fragmentation, make polystyrene waste plastics in mud, realize melting contracting body and be relatively uniformly attached to mud granule surface, then direct pressing is shaping;
(4) mud granule after compressing is sent into pyrolysis charring system to carry out charing and process, obtain the sludge organism charcoal of good pore structure.
Polystyrene waste plastics in step (1) can comprise industrial polystyrene waste plastics and civilian polystyrene waste plastics, is particularly useful for the waste plastics such as the foam mess-tin in domestic waste; Waste plastics particle size after cracking <2cm.
Moisture content <40% after drying sludge process in step (2), drying mode can be convection drying or contact drying.
The mass ratio that polystyrene waste plastics in step (3) accounts for mixture controls to be 10 ~ 60%, and heating and temperature control is 100 DEG C ~ 180 DEG C, and it is 3 ~ 15 min that incorporation time controls, and mode of heating is indirect; Mixture direct pressing is shaping, and forming shape is ball-shaped, cylindrical or ellipse, and size controlling is 3mm ~ 35mm.
Pyrolysis charring system in step (4) is existing pyrolyzing sludge carbonization system, does not need to do any transformation.
The sludge organism charcoal of aforementioned preparation has more transitional pore and extends inward, and liquid phase diffusion is superior, and described sludge organism charcoal is used as charcoal fertilizer or water treatment absorbent, also can prepare high-performance active sludge carbon after activation process further.
Improve a system for sludge organism charcoal specific area method, primarily of conveying device, breaker, buffer bin, metering device, heating and mixing device, shaping granulation device and pyrolysis charring system composition, wherein
The outlet of 1# conveying device is connected with breaker entrance, breaker outlet is connected with 2# conveying device entrance, the outlet of 2# conveying device is connected with buffer bin entrance, buffer bin outlet is connected with metering device entrance, aforementioned 1# conveying device, breaker, 2# conveying device, buffer bin and metering device form polystyrene waste plastics pipeline, and metering device outlet is wherein connected with heating and mixing device entrance;
The outlet of 3# conveying device is connected with drying device entrance, and drying device outlet is connected with 4# conveying device entrance, and aforementioned 3# conveying device, drying device and 4# conveying device form mud pipeline, and wherein the outlet of 4# conveying device is connected with heating and mixing device entrance;
Heating and mixing device outlet is connected with shaping granulation device entrance, and shaping granulation device outlet is connected with 5# conveying device entrance, and the outlet of 5# conveying device is connected with pyrolysis charring system entry.
Further, described 1# conveying device is belt conveyor or apron conveyor; 2# conveying device is belt conveyor, drag conveyor, bucket elevator, machine for zipper or conveying worm; 3# conveying device and 4# conveying device are belt conveyor, conveying worm or drag conveyor; 5# conveying device is belt conveyor; Described metering device is screw(-type) feeder, star feeder or oscillating feeder.
Further, described breaker is common plastics shear crusher; Drying device can be rotary-kiln dryer, hydro-thermal method dehydration still, fluidized drying machine, vacuum drier or disk drying machine.
Further, described heating and mixing device is external-heating rotary kiln, external heated fixed-bed stirring mixer; Shaping granulation device can be roller briquetting machine or extruding granulator.
The invention has the advantages that: utilize polystyrene waste plastics to improve pyrolyzing sludge charcoal specific area, compared with the independent pyrolysis charcoal of mud under equal conditions, the pyrolysis charcoal specific area of gained can increase by 100 ~ 400%; And the charcoal transitional pore of preparation extends inward, and liquid phase diffusion is superior, improve its absorption property to larger molecular organics, greatly improve the value of sludge organism charcoal.Present invention process is simple and practical, small investment, and cost is low, has good economic benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is present invention process device flow chart.
In figure: 1. 1# conveying device, 2. breaker, 3. 2# conveying device, 4. buffer bin, 5. metering device, 6. 3# conveying device, 7. drying device, 8. 4# conveying device, 9. heating and mixing device, 10. shaping granulation device, 11. 5# conveying devices, 12. pyrolysis charring systems.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment: a kind of method improving sludge organism charcoal specific area, implementation step comprises:
(1) polystyrene waste plastics is carried out break process;
(2) mud that Sewage Plant mechanical dehydration produces is carried out drying process;
(3) carried out in proportion being uniformly mixed and heating by the polystyrene waste plastics after dried mud and fragmentation, make polystyrene waste plastics in mud, realize melting contracting body and be relatively uniformly attached to mud granule surface, then direct pressing is shaping;
(4) mud granule after compressing is sent into pyrolysis charring system to carry out charing and process, obtain the sludge organism charcoal of good pore structure, can be used as charcoal fertilizer or water treatment absorbent, also can prepare high-performance active sludge carbon after activation process further.
Polystyrene waste plastics in step of the present invention (1) can comprise industrial polystyrene waste plastics and civilian polystyrene waste plastics, is particularly useful for the waste plastics such as the foam mess-tin in domestic waste; Waste plastics particle size after cracking <2cm.Moisture content <40% after drying sludge process in step (2), drying mode can be convection drying or contact drying.The mass ratio that polystyrene waste plastics in step (3) accounts for mixture controls to be 10 ~ 60%, and heating and temperature control is 100 DEG C ~ 180 DEG C, and it is 3 ~ 15 min that incorporation time controls, and mode of heating is indirect; Mixture direct pressing is shaping, and forming shape is ball-shaped, cylindrical or ellipse, and maximum particle diameter controls as 3mm ~ 35mm.Pyrolysis charring system in step (4) is existing pyrolyzing sludge carbonization system, does not need to do any transformation.
Refer to Fig. 1, a kind of device systems improving sludge organism charcoal specific area method, the connected mode of equipment is as follows: 1# conveying device 1 outlet is connected with breaker 2 entrance, breaker 2 outlet is connected with 2# conveying device 3 entrance, 2# conveying device 3 outlet is connected with buffer bin 4 entrance, buffer bin 4 outlet is connected with metering device 5 entrance, and metering device 5 outlet enters 9 mouthfuls with heating and mixing device and is connected; 3# conveying device 6 outlet is connected with drying device 7 entrance, and sludge drying mechanism 7 outlet is connected with 4# conveying device 8 entrance, and 4# conveying device 8 outlet is connected with heating and mixing device 9 entrance; Heating and mixing device 9 exports and is connected with shaping granulation device 10 entrance, and shaping granulation device 10 outlet is connected with 5# conveying device 11 entrance, and 5# conveying device 11 outlet is connected with pyrolysis charring system 12 entrance.1# conveying device 1 is belt conveyor or apron conveyor; 2# conveying device 3 is belt conveyor, drag conveyor, bucket elevator, machine for zipper or conveying worm; 3# conveying device 6 and 4# conveying device 8 are belt conveyor, conveying worm or drag conveyor; 5# conveying device 11 is belt conveyor.Metering device 5 is screw(-type) feeder, star feeder or oscillating feeder.Breaker 2 is common plastics shear crusher.Drying device 7 can be rotary-kiln dryer, hydro-thermal method dehydration still, fluidized drying machine, vacuum drier or disk drying machine.Heating and mixing device 9 is external-heating rotary kiln and external heated fixed-bed stirring mixer; Shaping granulation device 10 can be roller briquetting machine or extruding granulator.Pyrolysis charring system 12 is existing conventional pyrolyzing sludge carbonization system, does not need to undergo technological transformation.
System equipment device of the present invention is described as follows, and following device all directly can be bought in market:
1. 1# conveying device is belt conveyor or apron conveyor;
2. breaker is common plastics shear crusher;
3. 2# conveying device is belt conveyor, drag conveyor, bucket elevator, machine for zipper or conveying worm;
4. buffer bin, common feed bin, top is cylinder, and bottom is taper or top is square, and bottom is pyramid;
5. metering device is screw(-type) feeder, star feeder or oscillating feeder;
6. 3# conveying device is belt conveyor, conveying worm or drag conveyor;
7. drying device, rotary-kiln dryer, hydro-thermal method dehydration still, fluidized drying machine, vacuum drier or disk drying machine;
8. 4# conveying device is belt conveyor, conveying worm or drag conveyor;
9. heating and mixing device is external-heating rotary kiln or external heated fixed-bed stirring mixer;
10. shaping granulation device is roller briquetting machine or extruding granulator;
11. 5# conveying devices are belt conveyor;
12. pyrolysis charring systems are existing conventional pyrolyzing sludge carbonization system, as fixed-bed type, moving-bed type or rotary kiln type retort;
The invention discloses a kind of method and system improving sludge organism charcoal specific area, the feature of the method is: carried out in proportion by the waste plastics after dried mud and fragmentation being uniformly mixed and heating, make waste plastics in mud, realize melting contracting body and be relatively uniformly attached to mud granule surface, then direct pressing is shaping; Mud granule after shaping is sent into pyrolysis charring system to carry out charing and process, obtain the sludge organism charcoal of good pore structure, as charcoal fertilizer or water treatment absorbent, also can prepare high-performance active sludge carbon after activation process further.The device systems that the method relates to is primarily of compositions such as conveying device, breaker, buffer bin, metering device, heating and mixing device, shaping granulation device and pyrolysis charring systems.The invention has the advantages that: utilize polystyrene waste plastics to improve pyrolyzing sludge charcoal specific area, compared with the independent pyrolysis charcoal of mud under equal conditions, the pyrolysis charcoal specific area of gained can increase by 100 ~ 400%; And the charcoal transitional pore of preparation extends inward, and liquid phase diffusion is superior, improve its absorption property to larger molecular organics, greatly improve the value of sludge organism charcoal.Present invention process is simple and practical, small investment, and cost is low, has good economic benefit and environmental benefit.
Above, be only the embodiment utilizing this origination techniques content, the modification that any those skilled in the art use this creation to do, change, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (10)
1. improve a method for sludge organism charcoal specific area, it is characterized in that implementation step comprises:
(1) polystyrene waste plastics is carried out break process;
(2) mud that Sewage Plant mechanical dehydration produces is carried out drying process;
(3) carried out being uniformly mixed and heating by the polystyrene waste plastics after dried mud and fragmentation, make polystyrene waste plastics in mud, realize melting contracting body and be relatively uniformly attached to mud granule surface, then direct pressing is shaping;
(4) mud granule after compressing is sent into pyrolysis charring system to carry out charing and process, obtain the sludge organism charcoal of good pore structure high-specific surface area.
2. a kind of method improving sludge organism charcoal specific area according to claim 1, it is characterized in that: the polystyrene waste plastics in step (1) comprises industrial polystyrene waste plastics and civilian polystyrene waste plastics, wherein waste plastics particle size after cracking <2cm.
3. a kind of method improving sludge organism charcoal specific area according to claim 1, it is characterized in that: moisture content <40% after the drying sludge process in step (2), drying mode can be convection drying or contact drying.
4. a kind of method improving sludge organism charcoal specific area according to claim 1, it is characterized in that: the mass ratio that the polystyrene waste plastics in step (3) accounts for mixture controls to be 10 ~ 60%, heating and temperature control is 100 DEG C ~ 180 DEG C, it is 3 ~ 15 min that incorporation time controls, and mode of heating is indirect; Mud and polystyrene waste plastic mixture compressing, forming shape is ball-shaped, cylindrical or ellipse, and size controlling is 3mm ~ 35mm.
5. a kind of method improving sludge organism charcoal specific area according to claim 1, is characterized in that: the pyrolysis charring system in step (4) is fixed-bed type, moving-bed type or rotary kiln type retort.
6. according to a kind of method improving sludge organism charcoal specific area of claim 1 to 5, its sludge organism charcoal prepared can be used as charcoal fertilizer or water treatment absorbent, also can prepare high-performance active sludge carbon after activation process further.
7. improve a system for sludge organism charcoal specific area method, it is characterized in that: primarily of conveying device, breaker, buffer bin, metering device, heating and mixing device, shaping granulation device and pyrolysis charring system composition, wherein
The outlet of 1# conveying device is connected with breaker entrance, breaker outlet is connected with 2# conveying device entrance, the outlet of 2# conveying device is connected with buffer bin entrance, buffer bin outlet is connected with metering device entrance, aforementioned 1# conveying device, breaker, 2# conveying device, buffer bin and metering device form polystyrene waste plastics pipeline, and metering device outlet is wherein connected with heating and mixing device entrance;
The outlet of 3# conveying device is connected with drying device entrance, and drying device outlet is connected with 4# conveying device entrance, and aforementioned 3# conveying device, drying device and 4# conveying device form mud pipeline, and wherein the outlet of 4# conveying device is connected with heating and mixing device entrance;
Heating and mixing device outlet is connected with shaping granulation device entrance, and shaping granulation device outlet is connected with 5# conveying device entrance, and the outlet of 5# conveying device is connected with pyrolysis charring system entry.
8. a kind of system improving sludge organism charcoal specific area method according to claim 7, is characterized in that: described 1# conveying device is belt conveyor or apron conveyor; 2# conveying device is belt conveyor, drag conveyor, bucket elevator, machine for zipper or conveying worm; 3# conveying device and 4# conveying device are belt conveyor, conveying worm or drag conveyor; 5# conveying device is belt conveyor; Described metering device is screw(-type) feeder, star feeder or oscillating feeder.
9. a kind of system improving sludge organism charcoal specific area method according to claim 7, is characterized in that: described breaker is common plastics shear crusher; Drying device can be rotary-kiln dryer, hydro-thermal method dehydration still, fluid bed dryer, vacuum drier or disk drying machine.
10. a kind of system improving sludge organism charcoal specific area method according to claim 7, is characterized in that: described heating and mixing device is external-heating rotary kiln or external heated fixed-bed stirring mixer; Shaping granulation device can be roller briquetting machine or extruding granulator.
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| CN106311202A (en) * | 2015-07-02 | 2017-01-11 | 中国科学院大连化学物理研究所 | Preparation method of sludge char catalyst as well as catalyst and application |
| CN106512946A (en) * | 2016-12-21 | 2017-03-22 | 福建师范大学 | Preparation method of sludge-based charcoal doped with waste PU shoe material |
| CN106732359A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of doped plastics powder |
| CN108554378A (en) * | 2018-04-19 | 2018-09-21 | 浙江工业大学 | A kind of compound porous sorbing material and preparation method based on oily sludge and waste plastic PET |
| CN114768757A (en) * | 2022-03-22 | 2022-07-22 | 上海第二工业大学 | Method and system for preparing sludge carbon material by mixing sludge and waste foamed plastic |
| CN115572033A (en) * | 2022-09-19 | 2023-01-06 | 北京城市排水集团有限责任公司 | Two-stage carbonization system and method for preparing sludge carbon |
| US11643350B2 (en) | 2020-12-01 | 2023-05-09 | Zhejiang Zone-King Environmental Sci&Tech Co., Ltd | Method for reducing heavy metal content of sludge-based biocoke |
| CN116393117A (en) * | 2023-03-23 | 2023-07-07 | 河南师范大学 | Method for preparing biochar to realize double reduction of sludge and microplastic and application |
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| CN106311202A (en) * | 2015-07-02 | 2017-01-11 | 中国科学院大连化学物理研究所 | Preparation method of sludge char catalyst as well as catalyst and application |
| CN106512946A (en) * | 2016-12-21 | 2017-03-22 | 福建师范大学 | Preparation method of sludge-based charcoal doped with waste PU shoe material |
| CN106732359A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of doped plastics powder |
| CN108554378A (en) * | 2018-04-19 | 2018-09-21 | 浙江工业大学 | A kind of compound porous sorbing material and preparation method based on oily sludge and waste plastic PET |
| US11643350B2 (en) | 2020-12-01 | 2023-05-09 | Zhejiang Zone-King Environmental Sci&Tech Co., Ltd | Method for reducing heavy metal content of sludge-based biocoke |
| CN114768757A (en) * | 2022-03-22 | 2022-07-22 | 上海第二工业大学 | Method and system for preparing sludge carbon material by mixing sludge and waste foamed plastic |
| CN115572033A (en) * | 2022-09-19 | 2023-01-06 | 北京城市排水集团有限责任公司 | Two-stage carbonization system and method for preparing sludge carbon |
| CN115572033B (en) * | 2022-09-19 | 2024-05-31 | 北京城市排水集团有限责任公司 | Two-stage carbonization system and method for preparing sludge carbon |
| CN116393117A (en) * | 2023-03-23 | 2023-07-07 | 河南师范大学 | Method for preparing biochar to realize double reduction of sludge and microplastic and application |
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