CN109628116A - A kind of system that biomass power generation is coupled with active carbon preparation - Google Patents

A kind of system that biomass power generation is coupled with active carbon preparation Download PDF

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Publication number
CN109628116A
CN109628116A CN201811558852.7A CN201811558852A CN109628116A CN 109628116 A CN109628116 A CN 109628116A CN 201811558852 A CN201811558852 A CN 201811558852A CN 109628116 A CN109628116 A CN 109628116A
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CN
China
Prior art keywords
biomass
activation
active carbon
carbonizing
passed
Prior art date
Application number
CN201811558852.7A
Other languages
Chinese (zh)
Inventor
谢兴旺
朱传强
冷富荣
孙亭亭
王君
邵哲如
Original Assignee
光大环保技术研究院(南京)有限公司
光大环境科技(中国)有限公司
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Application filed by 光大环保技术研究院(南京)有限公司, 光大环境科技(中国)有限公司 filed Critical 光大环保技术研究院(南京)有限公司
Priority to CN201811558852.7A priority Critical patent/CN109628116A/en
Publication of CN109628116A publication Critical patent/CN109628116A/en

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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/30Active carbon
    • C01B32/312Preparation
    • C01B32/318Preparation characterised by the starting materials
    • C01B32/324Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/30Active carbon
    • C01B32/312Preparation
    • C01B32/336Preparation characterised by gaseous activating agents
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization
    • C10B57/10Drying
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

Abstract

The present invention provides a kind of system that biomass power generation is coupled with active carbon preparation, system includes the active carbon Preparation equipment and biomass electric power plant equipment for sharing same raw material cabin, active carbon Preparation equipment includes sequentially connected crushing and screening device, drying unit, carbonizing apparatus and activation device, biomass electric power plant equipment includes biomass combustion device, the tar and/or combustible gas that carbonizing apparatus and/or activation device generate are passed through in biomass combustion device, and the high-temperature flue gas that biomass combustion device generates is passed through in drying unit, carbonizing apparatus and/or activation device.The system that biomass power generation of the invention is coupled with active carbon preparation realizes the efficient coproduction of biomass power generation and active carbon preparation, effectively improves energy utilization rate, environmental pollution caused by solving in process for preparing active carbon.

Description

A kind of system that biomass power generation is coupled with active carbon preparation
Technical field
The present invention relates to biomass power generation and active carbon preparation field, in particular to a kind of biomass power generation and active carbon system The system of standby coupling.
Background technique
The shortage of resources and problem of environmental pollution to become increasingly conspicuous makes Devoting Major Efforts To Developing clean energy resource become urgent project, I State's biomass energy is abundant, and biomass power generation has vast potential for future development.Meanwhile recently as country to environmental issue Pay attention to day by day, power plant emission standard tend to strictly, and active carbon demand increases severely, and supply falls short of demand.The raw material of active carbon can be divided into two Major class: plant and mineral substance.Plant has timber, sawdust, coconut husk etc.;Mineral substance have coal, refinery products etc..Plant Class raw material resources are abundant, and active carbon quality obtained is higher, therefore, prepares active carbon using various agriculture and industry wastes and obtains Pay attention to extensively.Large-scale production active carbon mainly uses physical activation method at present, and raw material is first in retort after charing Generate carbonized material, carbonized material subsequently enters in activation furnace, at a high temperature of 800-1000 DEG C with vapor, CO2, air or flue Gas (vapor, CO2、N2Deng gaseous mixture) etc. activated gas contact, carry out priming reaction be made active carbon.
It is, therefore, desirable to provide a kind of biomass power generation prepares the system coupled with active carbon, at least being partially solved State problem.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of system that biomass power generation is coupled with active carbon preparation, It is characterized in that, the system comprises the active carbon Preparation equipment and biomass electric power plant equipment that share same raw material cabin,
The active carbon Preparation equipment includes sequentially connected crushing and screening device, drying unit, carbonizing apparatus and activation Device,
The biomass electric power plant equipment includes biomass combustion device,
Wherein, the tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through the biomass In burner,
The high-temperature flue gas that the biomass combustion device generates is passed through the drying unit, the carbonizing apparatus and/or institute It states in activation device.
In one example, the biomass combustion device includes biomass boiler and dual firing chamber, the carbonizing apparatus and/ Or the tar and combustible gas of the activation device generation are passed through in the dual firing chamber, the high-temperature flue gas that the dual firing chamber generates is passed through In the drying unit, the carbonizing apparatus and/or the activation device.
In one example, it is equipped with two-way flue between the biomass boiler and the dual firing chamber, works as dual firing chamber Heat has residue, then waste heat is sent into the burner hearth of the biomass boiler, for generating steam-electric power;When dual firing chamber's heat When being not enough to supply drying oven, retort and activation furnace institute calorific requirement, partial heat is provided by the biomass boiler.
In one example, the biomass combustion device includes biomass boiler,
The tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through the biomass boiler In, the high-temperature flue gas that the biomass boiler generates is passed through the drying unit, the carbonizing apparatus and/or the activation device In.
In one example, the vapor that the biomass boiler generates is passed through in the activation device.
In one example, the vapor includes biomass electric power plant exhaust steam in steam turbine.
In one example, the biomass electric power plant equipment further includes flue gas purification device, and high-temperature flue gas is to the drying Enter in flue gas purification device and be cleaned after the heating of device, the carbonizing apparatus and/or the activation device.
In one example, biomass power generation and active carbon are carried out in the state that simultaneously negative pressure is arranged in workshop in the system Preparation.
In one example, the active carbon Preparation equipment further includes milling packing apparatus and warehouse, and the milling is packaged Device is connect with the activation device, and the active carbon after overactivation is stored in the warehouse after milling is packaged.
In one example, the drying unit includes drying oven and/or the carbonizing apparatus includes retort and/or institute Stating activation device includes activation furnace.
The present invention provides a kind of system that novel biomass power generation is coupled with active carbon preparation, same the system comprises sharing The active carbon Preparation equipment and biomass electric power plant equipment of one raw material cabin, the active carbon Preparation equipment include sequentially connected broken Screening plant, drying unit, carbonizing apparatus and activation device, the biomass electric power plant equipment includes biomass combustion device, In, the tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through the biomass combustion device In, the high-temperature flue gas that the biomass combustion device generates is passed through the drying unit, the carbonizing apparatus and/or the activation In device.The vapor that the biomass boiler generates is passed through in the activation device.High-temperature flue gas is to the drying unit, institute Enter in flue gas purification device and be cleaned after stating the heating of carbonizing apparatus and/or the activation device.
The system that biomass power generation of the invention is coupled with active carbon preparation realizes biomass power generation and prepared by active carbon Efficient coproduction, effectively improve energy utilization rate, environmental pollution caused by solving in process for preparing active carbon.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair Bright embodiment and its description, principle used to explain the present invention.
In attached drawing:
Fig. 1 is the structural representation for the system that the biomass power generation of one embodiment of the present of invention is coupled with active carbon preparation Figure;And
Fig. 2 is the structural representation for the system that the biomass power generation of another embodiment of the invention is coupled with active carbon preparation Figure.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into Row description.
In order to thoroughly understand the present invention, detailed method and step and/or structure will be proposed in following description.Obviously, Execution of the invention is not limited to specific details appreciated by those skilled in the art.Presently preferred embodiments of the present invention is detailed It is described as follows, however other than these detailed descriptions, the present invention can also have other embodiments.
It should be understood that the present invention can be implemented in different forms, and should not be construed as being limited to propose here Embodiment.On the contrary, provide these embodiments will make it is open thoroughly and completely, and will fully convey the scope of the invention to Those skilled in the art.In the accompanying drawings, for clarity, the size and relative size in the area Ceng He may be exaggerated.From beginning to end Same reference numerals indicate identical element.
It should be understood that when the term " comprising " and/or " including " is used in this specification, indicating described in presence Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety, Step, operation, element, component and/or their combination." one " of singular, "one" and " described/should " be also intended to Plural form, unless the context clearly indicates other mode.
Occupation area of equipment is big in active charcoal preparing process at present, and investment is big, is unfavorable for going into operation on a large scale.It is biomass carbonated Technology mainly uses spontaneous combustion and external heating mode, and the charcoal of part can be consumed when heating using spontaneous combustion, reduces yield.And carbonization process The tar of middle generation not easily collecting, processing, easily cause environmental pollution.
A large amount of high heating value combustible gas is generated in charing and activation process, needs to carry out heat recovery to it, with biomass Power plant's coupling can be further improved energy utilization efficiency.The vapor needed in activation process can be by biomass electric power plant steam turbine Steam extraction provides, and further reduces the cost.In addition, the flue gas generated in conventional carbon preparation process needs to handle, produced Fugitive dust is big in journey, seriously polluted.
The invention patent makees active charcoal preparing process and biomass electric power plant PROCESS COUPLING using the feed bin of biomass electric power plant For activated carbon raw material warehouse, the combustible gas and tar that generate in charing and activation process are burnt, charing and activation process are provided Needed for reaction heat, extra combustible gas enters biomass hearth combustion, and required vapor is taken out by steam turbine in activation process Stripping supplies, and flue gas enters smoke processing system with biomass combustion flue gas and purifies, and entire production process is in biomass electric power plant workshop Interior negative pressure operation.Realize that the effective use of energy, pollution-free operation reduce investment, increase economic efficiency.
Embodiment one
The present invention provides a kind of system that novel biomass power generation is coupled with active carbon preparation, biomass power generation of the invention The system coupled with active carbon preparation realizes the efficient coproduction of biomass power generation and active carbon preparation, effectively improves the energy Utilization rate, environmental pollution caused by solving in process for preparing active carbon.
Fig. 1 shows an exemplary embodiment of the embodiment of the present invention one.As shown in Figure 1, system a includes sharing together The active carbon Preparation equipment 100 and biomass electric power plant equipment 200 of one raw material cabin, active carbon Preparation equipment 100 include being sequentially connected Crushing and screening device, drying unit, carbonizing apparatus and activation device, biomass electric power plant equipment 200 include biomass combustion dress It sets.
In one example, crushing and screening device 110 includes crusberscreen, and in one example, drying unit 120 wraps Drying oven is included, in one example, carbonizing apparatus 130 includes retort, and in one example, activation device 140 includes activation Furnace.In one example, biomass combustion device includes biomass boiler and dual firing chamber.
Carbonizing apparatus and/or activation device generate tar and/or combustible gas be passed through in biomass combustion device, charing and The combustible gas generated in activation process recycles, and couples with biomass electric power plant boiler, realizes that energy efficient utilizes and stablizes Operation.
The high-temperature flue gas that biomass combustion device generates is passed through in drying unit, carbonizing apparatus and/or activation device.Activity After the heat supply flue gas utilization of charcoal preparation process is complete, into biomass electric power plant flue gas purification system, reduce pollution.
In one example, active carbon Preparation equipment 100 further includes milling packing apparatus (milling packaging system) and activity Charcoal warehouse, milling packing apparatus are connect with activation device, and the active carbon after overactivation is stored in work after milling is packaged In property charcoal warehouse.
In one example, between biomass boiler and dual firing chamber be equipped with two-way flue, when dual firing chamber's heat have it is surplus It is remaining, then waste heat is sent into the burner hearth of biomass boiler, for generating steam-electric power;When dual firing chamber's shortage of heat is dried with supplying When dry furnace, retort and activation furnace institute calorific requirement, partial heat is provided by biomass boiler.
System a recycles the combustible gas generated in charing and activation process, and couples with biomass electric power plant boiler, real Existing energy efficient, which utilizes, and stable operation is in addition, activated carbon raw material storehouse is located at biomass electric power plant raw material cabin can also reduce land occupation Investment.
In one example, the vapor that biomass boiler generates is passed through in activation device.In one example, vapor Including biomass electric power plant exhaust steam in steam turbine.Active carbon Preparation equipment 100 includes steam turbine and generator etc., and steam is passed through activation dress The process set is: driving steam turbine running by generator, the steam that biomass boiler is generated is pumped into activation device.Activation Vapor needed for process is derived from biomass electric power plant exhaust steam in steam turbine, reduces equipment investment.
In one example, biomass electric power plant equipment 200 further includes flue gas purification device (flue gas purification system), biomass Boiler generate flue gas enter in flue gas purification device and be cleaned, in addition, high-temperature flue gas to drying unit, carbonizing apparatus and/ Or enters in flue gas purification device and be cleaned after the heating of activation device.In one example, biomass electric power plant equipment 200 is gone back Including chimney, it is discharged after gas cleaning by chimney.After the heat supply flue gas utilization of process for preparing active carbon is complete, into biomass electricity Factory's flue gas purification system reduces pollution.
In one example, biomass power generation and active carbon system are carried out in the state that simultaneously negative pressure is arranged in workshop in system a Standby process.Active carbon preparation negative pressure in biomass electric power plant workshop is run, and reduces the pollution of process for preparing active carbon.
Embodiment two
Fig. 2 shows an exemplary embodiments of the embodiment of the present invention two.As shown in Fig. 2, the present embodiment and implementation Be in place of the main difference of example one: in system a ' operation, the tar and combustible gas generated in charing and activation process is direct It is passed through to biomass boiler hearth combustion, drying oven, retort and activation furnace institute's calorific requirement are high by biomass boiler furnace outlet Warm flue gas provides, and discharges after passing to flue gas purification system purification using rear flue gas.That is, the biomass combustion device of the present embodiment 200 ' do not include dual firing chamber, and the tar and/or combustible gas that carbonizing apparatus and/or activation device generate are passed directly into biomass boiler In, the high-temperature flue gas that biomass boiler generates is passed through in drying unit, carbonizing apparatus and/or activation device.
Certainly, unlimited skilled person will appreciate that the difference of dawn, embodiment two and embodiment one can also be more In above-mentioned difference.
Advantages of the present invention:
1, activated carbon raw material storehouse is located at biomass electric power plant raw material cabin, reduces investment of occupation of land;
2, the combustible gas that generates recycles in charing and activation process, and couple with biomass electric power plant boiler, realization energy Amount efficiently utilizes and stable operation;
3, vapor needed for activation process is derived from biomass electric power plant exhaust steam in steam turbine, reduces equipment investment;
4, after the heat supply flue gas utilization of process for preparing active carbon is complete, into biomass electric power plant flue gas purification system, reduce Pollution;
5, active carbon preparation negative pressure in biomass electric power plant workshop is run, and reduces the pollution of process for preparing active carbon.
The present invention provides a kind of system that novel biomass power generation is coupled with active carbon preparation, same the system comprises sharing The active carbon Preparation equipment and biomass electric power plant equipment of one raw material cabin, the active carbon Preparation equipment include sequentially connected broken Screening plant, drying unit, carbonizing apparatus and activation device, the biomass electric power plant equipment includes biomass combustion device, In, the tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through the biomass combustion device In, the high-temperature flue gas that the biomass combustion device generates is passed through the drying unit, the carbonizing apparatus and/or the activation In device.The vapor that the biomass boiler generates is passed through in the activation device.High-temperature flue gas is to the drying unit, institute Enter in flue gas purification device and be cleaned after stating the heating of carbonizing apparatus and/or the activation device.
The system that biomass power generation of the invention is coupled with active carbon preparation realizes biomass power generation and prepared by active carbon Efficient coproduction, effectively improve energy utilization rate, environmental pollution caused by solving in process for preparing active carbon.
This practical biomass power generation and active carbon prepare individual part in the system coupled or the similar of component is replaced It changes or deforms and fall within the scope of protection of the present invention.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by The appended claims and its equivalent scope are defined.

Claims (10)

1. a kind of biomass power generation prepares the system coupled with active carbon, which is characterized in that the system comprises share same original The active carbon Preparation equipment and biomass electric power plant equipment of feed bin,
The active carbon Preparation equipment includes sequentially connected crushing and screening device, drying unit, carbonizing apparatus and activates device,
The biomass electric power plant equipment includes biomass combustion device,
Wherein, the tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through the biomass combustion In device,
The high-temperature flue gas that the biomass combustion device generates is passed through the drying unit, the carbonizing apparatus and/or the work During makeup is set.
2. system according to claim 1, which is characterized in that the biomass combustion device includes biomass boiler and two Room is fired,
The tar and combustible gas that the carbonizing apparatus and/or the activation device generate are passed through in the dual firing chamber, two combustion The high-temperature flue gas that room generates is passed through in the drying unit, the carbonizing apparatus and/or the activation device.
3. system according to claim 2, which is characterized in that be equipped between the biomass boiler and the dual firing chamber double To flue, when dual firing chamber's heat has residue, then waste heat is sent into the burner hearth of the biomass boiler, for generating steaming Vapour power generation;When dual firing chamber's shortage of heat is to supply drying oven, retort and activation furnace institute calorific requirement, by the biomass boiler Partial heat is provided.
4. system according to claim 1, which is characterized in that the biomass combustion device includes biomass boiler,
The tar and/or combustible gas that the carbonizing apparatus and/or the activation device generate are passed through in the biomass boiler, institute The high-temperature flue gas for stating biomass boiler generation is passed through in the drying unit, the carbonizing apparatus and/or the activation device.
5. system according to claim 2, which is characterized in that the vapor that the biomass boiler generates is passed through the work During makeup is set.
6. system according to claim 5, which is characterized in that the vapor includes biomass electric power plant exhaust steam in steam turbine.
7. system according to claim 1, which is characterized in that the biomass electric power plant equipment further includes gas cleaning dress It sets, high-temperature flue gas is filled to after the heating of the drying unit, the carbonizing apparatus and/or the activation device into gas cleaning In setting and it is cleaned.
8. system according to claim 1, which is characterized in that the system be arranged in workshop and in the state of negative pressure into Row biomass power generation and active carbon preparation.
9. system according to claim 2, which is characterized in that the active carbon Preparation equipment further includes milling packing apparatus And warehouse, the milling packing apparatus are connect with the activation device, the quilt after milling is packaged of the active carbon after overactivation It is stored in the warehouse.
10. system according to claim 1, which is characterized in that the drying unit includes drying oven and/or the charing Device includes retort and/or the activation device includes activation furnace.
CN201811558852.7A 2018-12-19 2018-12-19 A kind of system that biomass power generation is coupled with active carbon preparation CN109628116A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110564429A (en) * 2019-08-14 2019-12-13 光大环保技术研究院(南京)有限公司 System and method for preparing activated carbon tail gas coupled biomass direct-fired denitration
CN110616076A (en) * 2019-08-14 2019-12-27 光大环保技术研究院(南京)有限公司 System and method for preparing activated carbon pyrolysis gas coupled biomass direct-fired denitration
CN110817866A (en) * 2019-12-03 2020-02-21 深圳市起源环保科技有限公司 Process for obtaining activated carbon by physical activation method

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Publication number Priority date Publication date Assignee Title
CN107022364A (en) * 2017-05-10 2017-08-08 河南省科学院能源研究所有限公司 Biomass pyrogenation gasification power generating simultaneously activated carbon process and key equipment
CN208205010U (en) * 2018-04-17 2018-12-07 光大环境科技(中国)有限公司 A kind of device of consumer waste incineration synergistic activity charcoal production

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107022364A (en) * 2017-05-10 2017-08-08 河南省科学院能源研究所有限公司 Biomass pyrogenation gasification power generating simultaneously activated carbon process and key equipment
CN208205010U (en) * 2018-04-17 2018-12-07 光大环境科技(中国)有限公司 A kind of device of consumer waste incineration synergistic activity charcoal production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110564429A (en) * 2019-08-14 2019-12-13 光大环保技术研究院(南京)有限公司 System and method for preparing activated carbon tail gas coupled biomass direct-fired denitration
CN110616076A (en) * 2019-08-14 2019-12-27 光大环保技术研究院(南京)有限公司 System and method for preparing activated carbon pyrolysis gas coupled biomass direct-fired denitration
CN110817866A (en) * 2019-12-03 2020-02-21 深圳市起源环保科技有限公司 Process for obtaining activated carbon by physical activation method

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