CN105018171A - Compound modified biomass solid formed fuel preparation device - Google Patents
Compound modified biomass solid formed fuel preparation device Download PDFInfo
- Publication number
- CN105018171A CN105018171A CN201510422563.4A CN201510422563A CN105018171A CN 105018171 A CN105018171 A CN 105018171A CN 201510422563 A CN201510422563 A CN 201510422563A CN 105018171 A CN105018171 A CN 105018171A
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- mixing
- storehouse
- raw material
- mixed cell
- powder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
- B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
- B30B11/207—Feed means
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a compound modified biomass solid formed fuel preparation device including a raw material supply warehouse, a powder adding warehouse, a liquid raw material adding warehouse, a mixing unit and a dense forming unit; a discharging port of the raw material supply warehouse and a discharging port of the powder adding warehouse are located at a charging port of the mixing unit, and are communicated with a mixing cavity of the mixing unit through the charging port of the mixing unit; a discharging port of the liquid raw material adding warehouse is communicated with the mixing cavity of the mixing unit; the dense forming unit is located at a discharging port end of the mixing unit; the discharging port of the mixing unit is connected with a charging port of the dense forming unit. A modified liquid raw material and a powder raw material can be automatically added as required and are uniformly mixed with a biomass raw material, and a biomass solid formed fuel can be efficiently prepared.
Description
Technical field
The invention belongs to biomass energy utilization and field of solid waste treating technology, particularly a kind compound modified biomass solid molding fuel preparation facilities.
Background technology
At present, the whole world is faced with the dual-pressure of energy and environment.On the one hand, the socioeconomic development need energy, as power, because fossil energy reserves are limited, calculates by current consumption, and world petroleum resource is inciting somebody to action approach exhaustion between 50 years to 80 years from now on; On the other hand, overconsumption fossil oil, has broken natural energy and carbon balance, has brought the environmental problem that depletion of the ozone layer, global warming, acid rain etc. are day by day serious.Therefore there is environmental protection, great attention that the exploitation of biomass energy of clean and sustainable use feature are subject to many countries.
China is a large agricultural country, there is a large amount of biomass resources, only agricultural crop straw just has kind more than 20, more than 700,000,000 ton can be produced every year, it is one of country of enriching the most of biomass resource in the world, but the agro-ecology mass-energy gone out of use every year or burn accounts for more than 40% of total amount, random burning not only can bring serious environmental pollution, is also the huge waste to resource.In view of the above circumstances, the task that recovery energy become very urgent to alleviate current energy environment issues is carried out to the agricultural-forestry biomass resource that China's reserves are huge.
In the various approach that biomass energyization utilizes, compactly extruding is shaping has the advantages such as technique is simple, productivity is high, and biomass molding fuel (Biomass Densification Briquetting Fuel, BDBF) density and intensity higher, be convenient to transport and burning, become the mainstream technology of the developed countries such as America and Europe gradually.
Because biomass have property of raw material (material composition, particle diameter and moisture etc.) uppity singularity, and all kinds of property of raw material differs greatly, and the domestic research to this technology is started late, and basic theory is not perfect.Biomass compact forming equipment exists three in actual applications and compares distinct issues: molding device energy consumption is high, die wear is fast and the shaped fuel calorific value produced is low.
And effectively can improve property of raw material by composite modification technology, reduce shaping energy consumption, extend die life, and can fuel value be promoted.But due to the relative conventional dense complex forming technology of compound modified biomass combust molding technique, also higher to the requirement of molding device, current traditional biomass compact forming device still can not meet user demand.
Consult domestic and foreign literature, patent CN 102862312 A discloses a kind of biomass extrusion molding Unit erriger, by power, operation being controlled, shear, roll stone roller, extrusion molding, the disconnection of finished product burnishing-in, weighing-packaging machine structure device forms and is arranged in same frame, utilize this biomass extrusion molding Unit erriger can realize biomass continuously extruding and molding, but unit does not possess interpolation and the mixing functions of modified feedstock.Patent CN 201479886 U discloses a kind of horizontal feed mixing granulation unit; this unit combines by pulverizing wind suction opening for feed, auxiliary material lift, mix and blend storehouse and granulating chamber; mixing can be realized and granulate once completing; but cannot adding liquid modified feedstock, and the automatic control of raw material adding proportion cannot be realized.
Summary of the invention
The object of the present invention is to provide one modified liquid raw material and powder raw material can be added automatically as required, and realize, with the Homogeneous phase mixing of biomass material, high efficiencyly to prepare the compound modified biomass solid molding fuel preparation facilities of biomass solid formed fuel.
The technical solution realizing the object of the invention is:
A kind of compound modified biomass solid molding fuel preparation facilities, comprises raw material supply storehouse, powder adds storehouse, liquid starting material adds storehouse, mixed cell and compact formed unit;
The discharge port that raw material supply storehouse and powder add storehouse is positioned at mixed cell feeding mouth side, and is communicated with the hybrid chamber of mixed cell by mixed cell feeding mouth,
Liquid starting material adds bin discharge port external and is communicated with mixed cell hybrid chamber,
Compact formed unit is positioned at mixed cell discharge port end, and mixed cell discharge port is connected with compact formed unit feed mouth;
Wherein, raw material cabin feeding screw is distributed on raw material cabin screw shaft, powder adds storehouse spiral and is distributed on the screw shaft of powder interpolation storehouse, mixing auger be distributed in be positioned at mixed cell discharge port one end mixing auger axle on, raw material cabin screw shaft, powder add storehouse screw shaft and mixing auger axle lays respectively at raw material warehouse, powder adds warehouse and mixed cell hybrid chamber bottom; Reinforced drive-motor drives raw material cabin screw shaft and powder to add storehouse screw shaft respectively by raw material cabin driving chain and powder interpolation storehouse driving chain simultaneously and rotates; Mixing paddle is distributed on mixing axle, and mixing axle is positioned at directly over mixing auger axle, and hybrid drive motor drives mixing axle and mixing auger axle to rotate by mixing axle chain drive-belt and mixing auger axle chain drive-belt respectively simultaneously.
The present invention compared with prior art, its remarkable advantage:
(1) composite modified solid molding fuel preparation facilities proposed by the invention, the object reducing shaping energy consumption, promote product property and extend die life can be realized simultaneously, the bottleneck problem of restriction biomass solid formed fuel widespread use can be solved, promote the popularization of biomass solid formed fuel technology.
(2) add while the present invention can realize liquid modifying raw material and powder-modified raw material, mix, and automatically can control the adding proportion of raw material.
(3) the present invention can adapt to all kinds of pretreated biomass material, can promote the efficiency utilization of biomass resource greatly.
(4) the present invention can realize the interpolation of raw material, mixing and extrusion molding simultaneously, effectively can promote the production efficiency of biomass compact forming fuel.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of compound modified biomass solid molding fuel preparation facilities of the present invention.
Fig. 2 is the vertical view of compound modified biomass solid molding fuel preparation facilities of the present invention.
Fig. 3 is the left view of compound modified biomass solid molding fuel preparation facilities of the present invention.
Fig. 4 is the structural representation of compound modified biomass solid molding fuel preparation facilities mixing axle of the present invention and blade.
Fig. 5 is the compact formed schematic diagram of compound modified biomass solid molding fuel preparation facilities ring mould of the present invention.
Fig. 6 is the structural representation that in compound modified biomass solid molding fuel preparation facilities of the present invention, ring mold forming device adopts vertical modes of emplacement.
Embodiment
Composition graphs 1:
A kind of compound modified biomass solid molding fuel of the present invention preparation facilities, comprises raw material supply storehouse, powder adds storehouse, liquid starting material adds storehouse, mixed cell and compact formed unit;
The discharge port that raw material supply storehouse and powder add storehouse is positioned at mixed cell feeding mouth side, and is communicated with the hybrid chamber of mixed cell by mixed cell feeding mouth,
Liquid starting material adds bin discharge port external and is communicated with mixed cell hybrid chamber,
Compact formed unit is positioned at mixed cell discharge port end, and mixed cell discharge port is connected with compact formed unit feed mouth;
Wherein, raw material cabin feeding screw 1 is distributed on raw material cabin screw shaft 2, powder adds storehouse spiral 3 and is distributed on powder interpolation storehouse screw shaft 4, mixing auger 5 be distributed in be positioned at mixed cell discharge port one end mixing auger axle 6 on, raw material cabin screw shaft 2, powder add storehouse screw shaft 4 and the bottom that mixing auger axle 6 lays respectively at raw material warehouse 7, powder adds warehouse 8 and mixed cell hybrid chamber; Reinforced drive-motor 9 adds storehouse driving chain 11 by raw material cabin driving chain 10 and powder and drives raw material cabin screw shaft 2 and powder interpolation storehouse screw shaft 4 to rotate respectively simultaneously; Mixing paddle is distributed on mixing axle 12, and mixing axle 12 is positioned at directly over mixing auger axle 6, and hybrid drive motor 13 drives mixing axle 12 and mixing auger axle 6 to rotate by mixing axle chain drive-belt 14 and mixing auger axle chain drive-belt 15 respectively simultaneously.
Mixing paddle comprises the large blade 16 of mixing and the little blade 17 of mixing, mixes large blade 16 and mixes little blade 17 uniformly at intervals on mixing axle 12.
The blade mixing large blade 16 is 70 ° ~ 80 ° angles with the medullary ray mixing axle 12.
The scope that reinforced drive sprocket 18 on reinforced drive-motor 9 and the powder powder added on storehouse screw shaft 4 adds the combination reduction ratio of storehouse sprocket wheel 19 is 5 ~ 10.
The liquid interpolation storehouse warehouse 20 that liquid starting material adds storehouse is communicated with mixed cell hybrid chamber one end near mixed cell feeding mouth by transfer lime 21, and transfer lime 21 is provided with valve 22 and liquor pump 23.
Compact formed unit comprises ring mold forming device 24, variator 25, shaping drive-motor 26 and base 27, wherein, ring mold forming device 24, variator 25, shaping drive-motor 26 are positioned on base 27, and ring mold forming device 24 is connected with the output shaft of shaping drive-motor 26 by variator 25.
Composition graphs 1 ~ Fig. 3:
Raw material supply storehouse of the present invention comprises raw material warehouse 7, raw material cabin screw shaft 2, raw material cabin feeding screw 1, reinforced drive-motor 9 and raw material cabin driving chain 10, powder adds storehouse and comprises powder warehouse 8, powder adds storehouse screw shaft 4, powder adds storehouse spiral 3, powder adds storehouse chain drive-belt 11 and powder adds storehouse sprocket wheel 19, mixed cell comprises the large blade 16 of mixing, mix little blade 17, mixing axle 12, mixing auger axle 6, mixing auger 5, hybrid drive motor 13, mixing axle chain drive-belt 14 and mixing auger axle chain drive-belt 15, liquid starting material adds storehouse and comprises liquid interpolation storehouse warehouse 20, liquor pump 23, valve 22 and transfer lime 21, compact formed unit comprises ring mold forming device 24, variator 25, shaping drive-motor 26 and base 27.
Specific implementation process is: reinforced drive sprocket 18 and powder are added storehouse sprocket wheel 19 and is adjusted to suitable reduction ratio, drive raw material cabin screw shaft 2 and powder to add storehouse screw shaft 4 by reinforced drive-motor 9 to rotate, make biomass material and add powder to transfer in mixed cell, then add the interpolation raw material Homogeneous phase mixing in mixed cell carried in storehouse with liquid starting material, then exported in forming unit by mixing auger 5 and be shaped to solid fuel.
Fig. 4 is that compound modified biomass solid molding fuel preparation facilities of the present invention mixes large blade 16 structure and arranges schematic diagram.Mixing large blade 16 and mixing little blade 17 is distributed on mixing axle 12, the blade mixing large blade 16 is 70 ° ~ 80 ° angles with the medullary ray mixing axle 12, utilizes this angle can realize the mixing of raw material in mixed cell and push to discharge port with certain speed.
Fig. 5 is compound modified biomass solid molding fuel preparation facilities shaping schematic view of the present invention, after shaping raw material sends into forming unit, fill in the forming cavity that forms with roller wheel and ring mould, along with the rotation of pressure roller and ring mould, extrude the biomass solid fuel of specific compact density from nib.
Embodiment 1
Composition graphs 1 ~ Fig. 5:
In this embodiment, be raw material, be crushed to below 5mm with rice straw, hydrothermal treatment consists post-drying, to water ratio about 10%, is delivered in raw material supply storehouse; Be add powder with starch, be delivered to powder and add storehouse; Be liquid addition material with raw glycerine, be delivered to liquid starting material and add storehouse.It is 9 that reinforced drive sprocket 18 and powder interpolation storehouse sprocket wheel 19 combine reduction ratio.Drive-motor 9 adds storehouse driving chain 11 by raw material cabin driving chain 10 and powder and drives raw material cabin screw shaft 2 and powder interpolation storehouse screw shaft 4 to rotate, rice straw raw material sends into mixed cell with certain speed, utilizes the reduction ratio arranged to realize starch addition material simultaneously and automatically adds in proportion.Open valve 22, liquor pump 23 is started working simultaneously, is added in mixed cell by raw glycerine by transfer lime 21 with certain speed.The blade mixing large blade 16 is 75 ° with the centerlines mixing axle 12, hybrid drive motor 13 is started working, mixing axle 12 and mixing auger axle 6 is driven to rotate by combination drive chain 14 and mixing auger axle chain drive-belt 15, rice straw raw material, starch and raw glycerine fully mix in mixed cell by mixing large blade 16 and mixing little blade 17, mixed feedstock transportation exports to mixed cell by mixing auger 5 again, then enters in forming unit shaping.The ring mold forming device 24 of compact formed unit is horizontal placement.As needed feed change ratio range, the combination reduction ratio of rearrange liquids pump 23 work output and drive-motor sprocket wheel 18 and powder interpolation storehouse sprocket wheel 19.
Embodiment 2
Composition graphs 1 ~ Fig. 5:
In this embodiment, take sawdust as raw material, modulation water ratio about 10%, is delivered in raw material supply storehouse; Be add powder with starch, be delivered to powder and add storehouse; Be liquid addition material with paraffin liquid, be delivered to liquid starting material and add storehouse.
It is 10 that reinforced drive sprocket 18 and powder interpolation storehouse sprocket wheel 19 combine reduction ratio.Drive-motor 9 adds storehouse driving chain 11 by raw material cabin driving chain 10 and powder and drives raw material cabin screw shaft 2 and powder interpolation storehouse screw shaft 4 to rotate, sawdust raw material sends into mixed cell with certain speed, utilizes the reduction ratio arranged to realize starch addition material simultaneously and automatically adds in proportion.Open valve 22, liquor pump 23 is started working simultaneously, is added in mixed cell by paraffin liquid by transfer lime 21 with certain speed.The blade mixing large blade 16 is 80 ° with the centerlines mixing axle 12, hybrid drive motor 13 is started working, mixing axle 12 and mixing auger axle 6 is driven to rotate by combination drive chain 14 and mixing auger axle chain drive-belt 15, sawdust raw material, starch and paraffin liquid fully mix in mixed cell by mixing large blade 16 and mixing little blade 17, mixed feedstock transportation exports to mixed cell by mixing auger 5 again, then enters in forming unit shaping.The ring mold forming device 24 of compact formed unit is horizontal placement.As needed feed change ratio range, the combination reduction ratio of rearrange liquids pump 23 work output and drive-motor sprocket wheel 18 and powder interpolation storehouse sprocket wheel 19.
Embodiment 3
Composition graphs 1 ~ Fig. 6:
In this embodiment, be raw material with rice straw, be crushed to below 5mm, cure process post-drying to water ratio about 10%, be delivered in raw material supply storehouse; Be add powder with starch, be delivered to powder and add storehouse; Be liquid addition material with used oil, be delivered to liquid starting material and add storehouse.It is 5 that reinforced drive sprocket 18 and powder interpolation storehouse sprocket wheel 19 combine reduction ratio.Drive-motor 9 adds storehouse driving chain 11 by raw material cabin driving chain 10 and powder and drives raw material cabin screw shaft 2 and powder interpolation storehouse screw shaft 4 to rotate, rice straw raw material sends into mixed cell with certain speed, utilizes the reduction ratio arranged to realize starch addition material simultaneously and automatically adds in proportion.Open valve 22, liquor pump 23 is started working simultaneously, is added in mixed cell by used oil by transfer lime 21 with certain speed.The blade mixing large blade 16 is 70 ° with the centerlines mixing axle 12, hybrid drive motor 13 is started working, mixing axle 12 and mixing auger axle 6 is driven to rotate by combination drive chain 14 and mixing auger axle chain drive-belt 15, rice straw raw material, starch and used oil are crossed the large blade 16 of mixing and are mixed little blade 17 and fully mix in mixed cell, mixed feedstock transportation exports to mixed cell by mixing auger 5 again, then enters in forming unit shaping.As shown in Figure 6, the ring mold forming device 24 of compact formed unit is vertical placement.As needed feed change ratio range, the combination reduction ratio of rearrange liquids pump 23 work output and drive-motor sprocket wheel 18 and powder interpolation storehouse sprocket wheel 19.
Claims (9)
1. a compound modified biomass solid molding fuel preparation facilities, is characterized in that: comprise raw material supply storehouse, powder adds storehouse, liquid starting material adds storehouse, mixed cell and compact formed unit;
The discharge port that raw material supply storehouse and powder add storehouse is positioned at mixed cell feeding mouth side, and is communicated with the hybrid chamber of mixed cell by mixed cell feeding mouth,
Liquid starting material adds bin discharge port external and is communicated with mixed cell hybrid chamber,
Compact formed unit is positioned at mixed cell discharge port end, and mixed cell discharge port is connected with compact formed unit feed mouth;
Wherein, raw material cabin feeding screw (1) is distributed on raw material cabin screw shaft (2), powder adds storehouse spiral (3) and is distributed on powder interpolation storehouse screw shaft (4), mixing auger (5) is distributed in and is positioned on the mixing auger axle (6) of mixed cell discharge port one end, and raw material cabin screw shaft (2), powder add storehouse screw shaft (4) and the bottom that mixing auger axle (6) lays respectively at raw material warehouse (7), powder adds warehouse (8) and mixed cell hybrid chamber; Reinforced drive-motor (9) adds storehouse driving chain (11) by raw material cabin driving chain (10) and powder and drives raw material cabin screw shaft (2) and powder interpolation storehouse screw shaft (4) to rotate respectively simultaneously; Mixing paddle is distributed in mixing axle (12), mixing axle (12) is positioned at directly over mixing auger axle (6), and hybrid drive motor (13) drives mixing axle (12) and mixing auger axle (6) to rotate by mixing axle chain drive-belt (14) and mixing auger axle chain drive-belt (15) respectively simultaneously.
2. compound modified biomass solid molding fuel preparation facilities according to claim 1, it is characterized in that: described mixing paddle comprises the large blade of mixing (16) and the little blade of mixing (17), mix large blade (16) and mix little blade (17) uniformly at intervals in mixing axle (12).
3. compound modified biomass solid molding fuel preparation facilities according to claim 2, is characterized in that: blade and the medullary ray mixing axle (12) of the large blade of described mixing (16) are 70 ° ~ 80 ° angles.
4. the compound modified biomass solid molding fuel preparation facilities according to claim 1 or 2 or 3, is characterized in that: the scope that the reinforced drive sprocket (18) on described reinforced drive-motor (9) and the powder powder added on storehouse screw shaft (4) adds the combination reduction ratio in storehouse sprocket wheel (19) is 5 ~ 10.
5. the compound modified biomass solid molding fuel preparation facilities according to claim 1 or 2 or 3, it is characterized in that: liquid interpolation storehouse warehouse (20) that described liquid starting material adds storehouse is communicated with mixed cell hybrid chamber one end near mixed cell feeding mouth by transfer lime (21), and transfer lime (21) is provided with valve (22) and liquor pump (23).
6. compound modified biomass solid molding fuel preparation facilities according to claim 4, it is characterized in that: liquid interpolation storehouse warehouse (20) that described liquid starting material adds storehouse is communicated with mixed cell hybrid chamber one end near mixed cell feeding mouth by transfer lime (21), and transfer lime (21) is provided with valve (22) and liquor pump (23).
7. the compound modified biomass solid molding fuel preparation facilities according to claim 1 or 2 or 3 or 6, it is characterized in that: described compact formed unit comprises ring mold forming device (24), variator (25), shaping drive-motor (26) and base (27), wherein, ring mold forming device (24), variator (25), shaping drive-motor (26) are positioned on base (27), and ring mold forming device (24) is connected by the output shaft of variator (25) with shaping drive-motor (26).
8. compound modified biomass solid molding fuel preparation facilities according to claim 4, it is characterized in that: described compact formed unit comprises ring mold forming device (24), variator (25), shaping drive-motor (26) and base (27), wherein, ring mold forming device (24), variator (25), shaping drive-motor (26) are positioned on base (27), and ring mold forming device (24) is connected by the output shaft of variator (25) with shaping drive-motor (26).
9. compound modified biomass solid molding fuel preparation facilities according to claim 5, it is characterized in that: described compact formed unit comprises ring mold forming device (24), variator (25), shaping drive-motor (26) and base (27), wherein, ring mold forming device (24), variator (25), shaping drive-motor (26) are positioned on base (27), and ring mold forming device (24) is connected by the output shaft of variator (25) with shaping drive-motor (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510422563.4A CN105018171B (en) | 2015-07-17 | 2015-07-17 | Compound modified biomass solid molding fuel preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510422563.4A CN105018171B (en) | 2015-07-17 | 2015-07-17 | Compound modified biomass solid molding fuel preparation facilities |
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| CN105018171A true CN105018171A (en) | 2015-11-04 |
| CN105018171B CN105018171B (en) | 2018-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776970A (en) * | 2019-11-22 | 2020-02-11 | 山东十方环保能源股份有限公司 | Moulded carbon processing system |
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| US20100218420A1 (en) * | 2007-09-18 | 2010-09-02 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.) | Method of producing carbonaceous material-containing briquettes using steel mill dust containing oil |
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| CN105018171B (en) | 2018-03-09 |
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