CN102021059B - Forming method for modifying biomass fuel by rapid thermal treatment process - Google Patents
Forming method for modifying biomass fuel by rapid thermal treatment process Download PDFInfo
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- CN102021059B CN102021059B CN 201010598319 CN201010598319A CN102021059B CN 102021059 B CN102021059 B CN 102021059B CN 201010598319 CN201010598319 CN 201010598319 CN 201010598319 A CN201010598319 A CN 201010598319A CN 102021059 B CN102021059 B CN 102021059B
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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
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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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses a forming method for modifying biomass fuel by a rapid thermal treatment process in the technical field of biomass fuel preparation. The preparation method of the forming fuel comprises the following steps: crushing biomass material into particles of which the diameter is less than 1 cm; performing rapid thermal treatment in a condition of limited oxygen supply or without oxygen, and collecting and obtaining thermo-modified biomass; crushing the obtained thermo-modified biomass; and adding binder and mixing in a forming machine to prepare the forming fuel. Through the method disclosed by the invention, the fiber structure of the biomass raw material can be damaged, and the flexibility is reduced so that the biomass raw material is easier to crush and grind; thus, the crushing and forming power consumption is obviously reduced, and the heat value and stability of the forming fuel are remarkably improved; moreover, as the liquid byproduct is used as the binder, heating is not required in the forming agglomeration process, the abrasion of the mechanical equipment is reduced, the durability of the forming fuel is improved, and the preparation cost is effectively lowered.
Description
Technical field
The invention belongs to the biomass fuel preparing technical field, particularly a kind of forming method that utilizes quick thermal treatment process modified biomass fuel.
Background technology
Biomass fuel forming is with biomass wastes such as stalk, rice husk, wood chips, the solid molding fuel that with the method for machinery pressurization, loose originally, unbodied raw material is compressed into have definite shape, density is bigger.The briquetting biomass shaped fuel has advantages such as volume is little, density is big, accumulating is convenient, calorific value is high, flameholding.Yet the fibrous texture of biomass uniqueness causes the continuous charging difficulty, and it is higher to pulverize energy consumption; Little, the no adhesion of biomass material density is accompanied by recoverable deformation, surface breakdown and the viscous deformation of primary particle usually in pressing process, this process will consume lot of energy; Biomass material kind and change of moisture content wide ranges cause difficult forming and fuel quality to differ, and fuel ignition and combustionproperty fluctuation are bigger.These factors cause the biomass molding fuel cost higher, are difficult to large-scale promotion.Therefore, be scale operation biomass molding fuel cheaply, press for exploitation less energy-consumption biomass molding fuel production technology.
Summary of the invention
The purpose of this invention is to provide a kind of forming method that utilizes quick thermal treatment process modified biomass fuel, it is characterized in that, comprise the steps:
1) biological material being crushed to diameter before thermal treatment is particle below the 1cm;
2) with biological material the oxygen equivalence ratio less than 0.1 limited oxygen supply or oxygen free condition under, under 300-500 ℃ of temperature, carry out rapid thermal process 0.01-5s, collect and also to obtain heat modification biomass and small amount of liquid by product and associated gas; Wherein equivalence ratio is defined as the ratio of actual oxygen-supplying amount and theoretically complete combustion oxygen requirement;
3) with step 2) the heat modification biomass that obtain are raw material, and it is carried out pulverization process, are binding agent with the liquid by product, or add binding agent more in addition and form binder mixture, prepare shaped fuel in shaper.
Described heat treated temperature rise rate is 10
2-10
5℃/s.
Described biological material is the various agricultural crop straws and the timber of lignocellulose-containing.
Described limited oxygen supply or oxygen free condition are that the oxygen equivalence ratio by the control reaction system forms oxygen-lean atmosphere or inertia anaerobic protective atmosphere less than 0.1 air feeding amount.
It is described that the heat modification biomass are carried out pulverization process to particle diameter is 10～80mm.
The described binding agent that adds in addition again is clay, pitch, starch, tar or papermaking wastewater.
Described shaper is piston impact briquetting machine, spiral squeezing type shaper or roller granule-forming machine.
The invention has the beneficial effects as follows low temperature quick thermal treatment process in the utilization, to carrying out heat modification without the biomass of pulverizing, in this heat treatment process, can make biomass that to a certain degree pyrolytic reaction takes place, mainly comprise the generation etc. of reduction, dehydration and the crosslinking reaction of the polymerization degree; The employing quick thermal treatment process also cooperates the short treatment time, solid retained, and the formation of inhibition liquid by product and associated gas to greatest extent.After biomass were handled through heat modification, himself fibrous texture was destroyed, and snappiness reduces, and easier pulverizing and grinding are pulverized and the moulding energy consumption thereby can significantly reduce; Compare with original biomass in addition, the biomass calorific value behind the heat modification improves, hydrophobic performance significantly improves, and therefore calorific value, the stability of the shaped fuel of preparation all will significantly improve thus.
In the biomass rapid thermal treatment process, formed small amount of liquid by product mainly comprises small organic molecule and phenol organic matters such as water, acetate, and phenol organic matter is good binding agent.Therefore product liquid can wholely use as binding agent, also can at first be used for separation and Extraction acetate, and remaining liq is re-used as binding agent and uses; The use of binding agent makes and need not heating in the moulding agglomeration process, thereby do not have the heating energy consumption, the wearing and tearing that can alleviate the mechanical means that causes because of heating simultaneously, and also the use of product liquid also can improve the weather resistance of shaped fuel.
Embodiment
The invention will be further described below in conjunction with specific embodiment.Experimental technique among the following embodiment if no special instructions, is ordinary method.Percentage composition among the following embodiment is weight percentage if no special instructions.Herein, s represents second.
Embodiment 1
With rice husk seasoning, that do not make break process is raw material, and its water ratio is about 9.8%; Adopt Rapid Thermal modification treatment unit to its rapid thermal process 2s under 320 ℃, nitrogen atmosphere, heat treated temperature rise rate is 800 ℃/s, and the productive rate that obtains heat modification rice husk, liquid and associated gas is respectively 90%, 6% and 4%.
It is 30mm that the heat modification powdered rice hulls that experiment is obtained is broken to particle diameter, the rice husk after pulverizing is mixed with product liquid and stirs; The said mixture material is sent into impact briquetting machine is pressed into diameter 25mm, length 30mm at normal temperatures with pressure 60MPa cylindric biomass molding fuel.
Embodiment 2
Wheat-straw with seasoning is a raw material, and its water ratio is about 10.5%, and it is simply cut off processing, and the particulate height is about 5cm; Adopt Rapid Thermal modification treatment unit to it at 360 ℃, atmosphere of inert gases (with associated gas as protection gas) rapid thermal process 1s down; heat treated temperature rise rate is 1200 ℃/s, and the productive rate that obtains heat modification straw, liquid and associated gas is respectively 91%, 5% and 4%.
It is 40mm that the heat modification straw that experiment is obtained is crushed to particle diameter, the straw after pulverizing is mixed with product liquid and stirs; The said mixture material is sent into impact briquetting machine is pressed into the length of side 25 * 40 * 100mm at normal temperatures with pressure 30MPa rectangular parallelepiped biomass molding fuel.
Embodiment 3
Cotton stalk with seasoning is a raw material, and its water ratio is about 11.3%, and it is simply cut off processing, and the particulate height is about 4cm; Adopt Rapid Thermal modification treatment unit to it at 350 ℃, atmosphere of inert gases (with associated gas as protection gas) rapid thermal process 0.5s down; heat treated temperature rise rate is 700 ℃/s, and the productive rate that obtains heat modification cotton stalk, liquid and associated gas is respectively 95%, 3% and 2%.
It is 50mm that the heat modification cotton stalk that experiment is obtained is crushed to particle diameter, the cotton stalk after pulverizing and product liquid and certain clay (ratio of heat modification cotton stalk, liquid by product, clay is 95: 3: 3) are mixed and stirs; The said mixture material is sent into impact briquetting machine is pressed into diameter 40mm, length 60mm at normal temperatures with pressure 30MPa cylindric biomass molding fuel.
Embodiment 4
Rice straw with seasoning is a raw material, and its water ratio is about 10.8%, and it is simply cut off processing, and the particulate height is about 5cm; Adopt Rapid Thermal modification treatment unit to it at 400 ℃, atmosphere of inert gases (with associated gas as protection gas) rapid thermal process 0.4s down; heat treated temperature rise rate is 1500 ℃/s, and the productive rate that obtains heat modification cotton stalk, liquid and associated gas is respectively 88%, 7% and 5%.
It is 30mm that the heat modification cotton stalk that experiment is obtained is crushed to particle diameter, the cotton stalk after pulverizing is mixed with product liquid and stirs; The said mixture material is sent into spiral shaper is pressed into diameter 50mm, length 60mm at normal temperatures with pressure 30MPa cylindric biomass molding fuel.
Claims (5)
1. a forming method that utilizes quick thermal treatment process modified biomass fuel is characterized in that, comprises the steps:
1) biological material being crushed to diameter before thermal treatment is particle below the 1cm;
2) with biological material the oxygen equivalence ratio less than 0.1 limited oxygen supply or oxygen free condition under, under 300-500 ℃ of temperature, be 10 with temperature rise rate
2-10
5℃/s carries out rapid thermal process 0.01-5s, collects also to obtain heat modification biomass and small amount of liquid by product and associated gas; Wherein the oxygen equivalence ratio is defined as the ratio of actual oxygen-supplying amount and theoretically complete combustion oxygen requirement; Described biological material is the various agricultural crop straws and the timber of lignocellulose-containing;
3) with step 2) the heat modification biomass that obtain are raw material, and it is carried out pulverization process, are binding agent with the liquid by product, or add binding agent more in addition and form binder mixture, prepare shaped fuel in shaper.
2. according to the described forming method that utilizes quick thermal treatment process modified biomass fuel of claim 1; it is characterized in that described limited oxygen supply or oxygen free condition are that the oxygen equivalence ratio by the control reaction system forms oxygen-lean atmosphere or inertia anaerobic protective atmosphere less than 0.1 air feeding amount.
3. according to the described forming method that utilizes quick thermal treatment process modified biomass fuel of claim 1, it is characterized in that described the heat modification biomass are carried out pulverization process to particle diameter is 10～80mm.
4. according to the described forming method that utilizes quick thermal treatment process modified biomass fuel of claim 1, it is characterized in that the described binding agent that adds in addition again is clay, pitch, starch, tar or papermaking wastewater.
5. according to the described forming method that utilizes quick thermal treatment process modified biomass fuel of claim 1, it is characterized in that described shaper is piston impact briquetting machine, spiral squeezing type shaper or roller granule-forming machine.
Priority Applications (1)
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| CN 201010598319 CN102021059B (en) | 2010-12-10 | 2010-12-10 | Forming method for modifying biomass fuel by rapid thermal treatment process |
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| CN 201010598319 CN102021059B (en) | 2010-12-10 | 2010-12-10 | Forming method for modifying biomass fuel by rapid thermal treatment process |
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| CN102021059A CN102021059A (en) | 2011-04-20 |
| CN102021059B true CN102021059B (en) | 2013-07-31 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250662A (en) * | 2011-06-07 | 2011-11-23 | 贵州省烟草公司毕节地区公司 | Method for producing shaped fuel from tobacco stalk biomass |
| CN104449860B (en) * | 2014-11-30 | 2017-02-01 | 东北电力大学 | Solar heat collection pre-processing and gasified tar comprehensive utilization process and device used for biomass compression |
| CN105861099A (en) * | 2016-06-16 | 2016-08-17 | 安徽新生力生物科技有限公司 | Heat treatment forming method of clay-based modified biomass fuel |
| CN106010721A (en) * | 2016-08-04 | 2016-10-12 | 广西南宁胜祺安科技开发有限公司 | High-efficiency biomass solid pellet fuel |
| CN106190399A (en) * | 2016-08-04 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | A kind of novel biomass shaped fuel |
| CN106190400A (en) * | 2016-08-04 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | A kind of method preparing efficient biomass shaped fuel |
| CN106190401A (en) * | 2016-08-04 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation method of biomass solid formed fuel |
| CN106190419A (en) * | 2016-08-04 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | The preparation method of biomass solid fuel |
| CN106010722A (en) * | 2016-08-04 | 2016-10-12 | 广西南宁胜祺安科技开发有限公司 | Preparation method of novel biomass briquette fuel |
| CN106118789A (en) * | 2016-08-04 | 2016-11-16 | 广西南宁胜祺安科技开发有限公司 | A kind of method utilizing sisal dregs to prepare biomass molding fuel |
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|---|---|---|---|---|
| CN101020852A (en) * | 2007-03-08 | 2007-08-22 | 刘春生 | Process of forming biomass fuel |
| CN101474885A (en) * | 2009-02-13 | 2009-07-08 | 烟台众力电力节能有限公司 | Equipment for compressing and compacting biomass |
| CN101508927A (en) * | 2009-03-25 | 2009-08-19 | 山东省科学院能源研究所 | Process for producing biomass pyrolytic carbon granular fuel |
| CN101787315A (en) * | 2010-02-10 | 2010-07-28 | 姜景文 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
| CN101831337A (en) * | 2009-03-12 | 2010-09-15 | 尚征 | Process technique for producing crop straw fuel |
-
2010
- 2010-12-10 CN CN 201010598319 patent/CN102021059B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020852A (en) * | 2007-03-08 | 2007-08-22 | 刘春生 | Process of forming biomass fuel |
| CN101474885A (en) * | 2009-02-13 | 2009-07-08 | 烟台众力电力节能有限公司 | Equipment for compressing and compacting biomass |
| CN101831337A (en) * | 2009-03-12 | 2010-09-15 | 尚征 | Process technique for producing crop straw fuel |
| CN101508927A (en) * | 2009-03-25 | 2009-08-19 | 山东省科学院能源研究所 | Process for producing biomass pyrolytic carbon granular fuel |
| CN101787315A (en) * | 2010-02-10 | 2010-07-28 | 姜景文 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
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| CN102021059A (en) | 2011-04-20 |
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