CN106520250A - Biomass fuel briquette and preparation method thereof - Google Patents
Biomass fuel briquette and preparation method thereof Download PDFInfo
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- CN106520250A CN106520250A CN201611126458.7A CN201611126458A CN106520250A CN 106520250 A CN106520250 A CN 106520250A CN 201611126458 A CN201611126458 A CN 201611126458A CN 106520250 A CN106520250 A CN 106520250A
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- Prior art keywords
- bamboo
- biomass fuel
- briquetting
- biomass
- calcium oxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/442—Wood or forestry waste
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
- C10L2290/141—Injection, e.g. in a reactor or a fuel stream during fuel production of additive or catalyst
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/32—Molding or moulds
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a biomass fuel briquette. The biomass fuel briquette comprises, by weight, 70-74% of wood flour, 20% of bamboo bran, 2%-3% of calcium oxide powder and an appropriate quantity of anti-knock agent, combustion improver and bulking agent. The invention further discloses a preparation method of the biomass fuel briquette. The biomass fuel briquette has the advantages of high calorific value, low ash content and less deposit corrosion.
Description
Technical field
The present invention relates to a kind of biomass fuel briquetting and preparation method thereof.
Background technology
Biomass solid formed fuel has easily storage, transport and easy to use, clean environment firendly, efficiency of combustion height etc. excellent
Point, has been subjected to the concern of increasing country as a kind of regenerative resource of excellent cleaning.In western developed country
Biomass energy instead of traditional energy completely in some occasions, is the energy security of western developed country and improves environment and do
Major contribution is gone out.China has started the research to biomass energy since eighties of last century nineties, had at this stage it is certain into
Really.
There is extremely abundant eucalyptus barks and bamboo industrial wood waste biomass resource in south China area, this is also out
Send out the emphasis using this area's biomass energy.At present, using eucalyptus barks process biomass solid forming raw material have slagging scorification compared with
The characteristics of few, but calorific value is relatively low, and ash content is larger, become hinder eucalyptus barks biomass solid formed fuel popularization and application it is main because
Element；And adopt bamboo residue processing biomass solid formed fuel calorific value it is very high, but slagging scorification it is more than eucalyptus barks, to pot
Stove heating surface deposit attack is serious.
The content of the invention
The present invention is directed to the deficiencies in the prior art, there is provided a kind of biomass fuel briquetting, the biomass fuel briquetting heat
Value is high, ash content is little.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals：
A kind of biomass fuel briquetting, including the raw material of following weight component ratio：Wood chip 70%-74%, bamboo chaff 20%, calcium oxide powder
2%-3% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
As a further improvement on the present invention, the moisture content of the eucalyptus barks is 18-25%, the bamboo
Moisture content is 8-17%.
In addition the invention also discloses a kind of preparation method of biomass fuel briquetting.
Eucalyptus barks and bamboo are processed as by wood chip and bamboo chaff using pulverizer, add calcium oxide powder and appropriate antidetonation explosion-proof
70%-74% wood chips, 20% bamboo chaff and 2%-3% calcium oxide powders are well mixed by agent, combustion adjuvant, raising agent, by weight component ratio,
It is squeezed into using extrusion molding machinery equipment and is shaped as square or cylindrical fuel compact.
Beneficial effect：Compared with prior art, which has the advantages that the present invention：
Biomass fuel briquetting of the present invention be mainly wood chip be mixed with bamboo chaff, can improve pure eucalyptus barks biomass solid into
Type fuel value is low, the weakness that ash content is big, and while alleviates pure bamboo chaff biomass solid formed fuel coking, deposit attack feelings
Condition, to make up the deficiency of single creature matter solid molding fuel, so as to reach the purpose for improving fuel characteristic；
As appropriate calcium oxide powder is also added in biomass fuel briquetting, also can preferably improve biomass ash and melt
Point, improve slagging scorification situation, reduce deposit attack；
Secondly antidetonation anti-knock agent, combustion adjuvant, raising agent, in order to biomass fuel pressure are also added in biomass fuel briquetting
Block is burnt and is prevented when biomass fuel briquetting from burning and exploded.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the present invention above and other objects, features and advantages can
Become apparent, below especially exemplified by preferred embodiment.
Specific embodiment
Weighed by following raw material weight component ratios：
Wherein, wood chip 74%, bamboo chaff 20%, calcium oxide powder 2% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
The method for preparing above-mentioned biomass fuel briquetting is：Eucalyptus barks are spontaneously dried with bamboo or carried out using dryer
Drying, the moisture content for making eucalyptus barks are 18-25%, and the moisture content of bamboo is 8-17%；Eucalyptus barks are added with bamboo using pulverizer
Work is wood chip and bamboo chaff, adds calcium oxide powder and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent, by above-mentioned components by weight percent
Than each raw material is well mixed, it is squeezed into using extrusion molding machinery equipment and is shaped as square or cylindrical fuel compact, fired
Material briquetting obtains finished fuels block Jing natural cooling, screening and after packing successively.
Embodiment 2
Weighed by following raw material weight component ratios：
Wherein, wood chip 72%, bamboo chaff 20%, calcium oxide powder 2% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
The method for preparing above-mentioned biomass fuel briquetting is：Eucalyptus barks are spontaneously dried with bamboo or carried out using dryer
Drying, the moisture content for making eucalyptus barks are 18-25%, and the moisture content of bamboo is 8-17%；Eucalyptus barks are added with bamboo using pulverizer
Work is wood chip and bamboo chaff, adds calcium oxide powder and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent, by above-mentioned components by weight percent
Than each raw material is well mixed, it is squeezed into using extrusion molding machinery equipment and is shaped as square or cylindrical fuel compact, fired
Material briquetting obtains finished fuels block Jing natural cooling, screening and after packing successively.
Embodiment 3
Weighed by following raw material weight component ratios：
Wherein, wood chip 72%, bamboo chaff 20%, calcium oxide powder 3% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
The method for preparing above-mentioned biomass fuel briquetting is：Eucalyptus barks are spontaneously dried with bamboo or carried out using dryer
Drying, the moisture content for making eucalyptus barks are 18-25%, and the moisture content of bamboo is 8-17%；Eucalyptus barks are added with bamboo using pulverizer
Work is wood chip and bamboo chaff, adds calcium oxide powder and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent, by above-mentioned components by weight percent
Than each raw material is well mixed, it is squeezed into using extrusion molding machinery equipment and is shaped as square or cylindrical fuel compact, fired
Material briquetting obtains finished fuels block Jing natural cooling, screening and after packing successively.
Embodiment 4
Weighed by following raw material weight component ratios：
Wherein, wood chip 70%, bamboo chaff 20%, calcium oxide powder 2.5% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
The method for preparing above-mentioned biomass fuel briquetting is：Eucalyptus barks are spontaneously dried with bamboo or carried out using dryer
Drying, the moisture content for making eucalyptus barks are 18-25%, and the moisture content of bamboo is 8-17%；Eucalyptus barks are added with bamboo using pulverizer
Work is wood chip and bamboo chaff, adds calcium oxide powder and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent, by above-mentioned components by weight percent
Than each raw material is well mixed, it is squeezed into using extrusion molding machinery equipment and is shaped as square or cylindrical fuel compact, fired
Material briquetting obtains finished fuels block Jing natural cooling, screening and after packing successively.
The work flow of biomass fuel briquetting is as follows：Raw material recovery-guillotine cutting crushing-feeding conveying-feeding is stirred
Process-compound stalk forming-dehumidifying dries-weighs pack-piling entrucking.
Biomass fuel briquetting Jing fuel tests in above-described embodiment show：The water of the combined biomass fuel compact
Point（Mar）For 17.6%, ash content（Aad）For 16.53%, volatile matter（Vad）For 54.32%, carbon point（FCd）For 16.78%, sulfur-bearing
（St, ad）0.29%th, Lower heat value（Qnet, ar）For 11.92MJ/Kg, higher calorific value（Qgr, ad）For 13.51MJ/Kg.
By bamboo chaff is blended in wood chip：Other biomass are blended in wood chip, this method is to biomass briquette-fuel
Calorific value, ash grades, and generation is certain to be affected, and can be rationally using biomass energy adapting to our needs.Its principle
It is：The fugitive constituent material of biomass fuel is mainly the thermal decomposition product of lignin and cellulose, but calorific value is than relatively low, general feelings
Under condition, the caloric value of fugitive constituent burning accounts for the 70% of biomass calorific value, and lignin is all carbonized at high temperature, the combustion of coke
Heat value higher.Bamboo chaff lignin from biomass content is generally greater than wood chip, thus height of its calorific value compared with wood chip, by wood chip
Rationally blending bamboo chaff can improve the calorific value of pure wood chip solid molding fuel；The big problem of ash content that the pure wood chip that individually burns is present,
The less bamboo chaff of mixing addition ash content can be led to be alleviated, bamboo chaff briquette-fuel coking of burning merely in addition is more compared with wood chip,
Pure bamboo chaff coking problem is also mitigated after mixing；Wood chip has strong poly- calcium effect, and its Ca, Mg content is far longer than bamboo chaff,
And K, Cl content is far smaller than bamboo chaff, thus, it is possible to improve ash content fusing point to a certain extent, the impact energy of K element is reduced, is subtracted
Light slagging scorification, deposition and corrosion condition；Wood chip N content is also low compared with bamboo chaff industrial wood waste, can also mitigate pure bamboo chaff biomass fuel
Material NOx discharge；In pure bamboo chaff raw material, content of lignin is bigger than wood chip in addition, Submicron Particles（PM1.0）With ultra micro rice
Grain thing（PM1.0+）Concentration has increased, and pure bamboo chaff biomass fuel combustion discharge quantity of particulate matter is improved after blending.From fibre
See in dimension form, although bamboo fiber is long, than big, so fiber is more stiff, during extruding, fiber combines poor in Qi Bi chambers；
Although wood fiber is slightly short, the ratio in Qi Bi chambers is less than bamboo wood, and fiber is relatively soft, by rational mixture, is also beneficial to biomass
Extrusion molding.Antidetonation anti-knock agent, combustion adjuvant, raising agent, in order to biomass fuel are also added in biomass fuel briquetting
Briquetting is burnt and is prevented when biomass fuel briquetting from burning and exploded.In sum, wood chip and bamboo chaff mixing briquetting, it is to solve
Serious most easy, the maximally effective side of deposit attack that individually burning wood chip calorific value is low, ash content that is being formed is more, cause on heating surface
One of method.
Calcium oxide powder is very high due to its own fusing point, is 2590 DEG C, and when content is high, calcium oxide powder is with monocrystal
Form is present, and the high characteristic of its own fusing point is emerged from, so as to the fusing point for causing ash content improves a lot；Calcium oxide powder also can
Dystectic alkali metal compound is produced, alkali metal is fixed in bottom ash, so as to reduce the deposit attack on heating surface；Separately
Outward, calcium oxide powder can be separated out in promotion system in the conversion of molten state K, make K in bottom ash content it is relative reduce, bottom ash becomes pine
It is soft and do not occur reunite.
As bamboo fibre is short, fiber is difficult to be molded firmly, if molding effect can be improved with eucalyptus barks rational mixture；In addition,
According to the characteristic distributions of bamboo wood lignin, can be the bamboo pars intramuralis rich in lignin for making biomass with eucalyptus barks mixture
Solid molding fuel, the particulate matter that can will more effectively improve eucalyptus barks calorific value, mitigate pure bamboo wood fuel combustion discharge.
Biomass fuel briquetting device device preparation method biomass fuel briquetting of the present invention enables this kind of shaped fuel big
Area is promoted, it is possible to is made revenue source variation, the diversification of peasant, is increased a large amount of job opportunities, alleviate rural surplus people
The pressure that mouth is brought to society.This kind of shaped fuel can also be turned waste into wealth, and improve the environmental consciousness of the whole people, be conducive to economizing type
The construction of society.The present invention also is compliant with the energy policy and environmental protection policy of country, and economic benefit and social benefit are notable, with ten
Divide wide market prospects.
Embodiment described above is only that the preferred embodiment of the present invention is described, not the structure to the present invention
Think and scope is defined.On the premise of without departing from design concept of the present invention, technology of this area ordinary person to the present invention
Various modifications and improvement that scheme is made, all should drop into protection scope of the present invention, the technology contents that the present invention is claimed,
All record in detail in the claims.
Claims (3)
1. a kind of biomass fuel briquetting, it is characterised in that：Including the raw material of following weight component ratio：Wood chip 70%-74%, bamboo chaff
20%th, calcium oxide powder 2%-3% and appropriate antidetonation anti-knock agent, combustion adjuvant, raising agent.
2. biomass fuel briquetting according to claim 1, it is characterised in that：The moisture content of the eucalyptus barks is
18-25%, the moisture content of the bamboo is 8-17%.
3. a kind of method of the biomass fuel briquetting prepared described in any one of claim 1-2, it is characterised in that：Using crushing
Eucalyptus barks and bamboo are processed as wood chip and bamboo chaff by machine, add calcium oxide powder and appropriate antidetonation anti-knock agent, and combustion adjuvant is loose
70%-74% wood chips, 20% bamboo chaff and 2%-3% calcium oxide powders are well mixed by agent, by weight component ratio, using single lead screw ex truding briquetting machine
Tool equipment is squeezed into and is shaped as square or cylindrical fuel compact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126458.7A CN106520250A (en) | 2016-12-09 | 2016-12-09 | Biomass fuel briquette and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126458.7A CN106520250A (en) | 2016-12-09 | 2016-12-09 | Biomass fuel briquette and preparation method thereof |
Publications (1)
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| CN106520250A true CN106520250A (en) | 2017-03-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004269835A (en) * | 2003-03-07 | 2004-09-30 | Koichi Sakaki | Carbonized matter having good ignition and burning properties and used as fuel, and method for producing the same |
| CN101899345A (en) * | 2009-05-25 | 2010-12-01 | 广州迪森热能技术股份有限公司 | Biomass molding fuels |
| CN102942977A (en) * | 2012-11-21 | 2013-02-27 | 北京奥科瑞丰新能源股份有限公司 | Compound biomass fuel briquette and preparation method thereof |
| CN105419899A (en) * | 2015-12-23 | 2016-03-23 | 太仓东浔生物科技有限公司 | Biomass fuel and preparation method therefor |
| CN105542893A (en) * | 2015-12-23 | 2016-05-04 | 太仓东浔生物科技有限公司 | Biomass pellet fuel and preparation method thereof |
-
2016
- 2016-12-09 CN CN201611126458.7A patent/CN106520250A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004269835A (en) * | 2003-03-07 | 2004-09-30 | Koichi Sakaki | Carbonized matter having good ignition and burning properties and used as fuel, and method for producing the same |
| CN101899345A (en) * | 2009-05-25 | 2010-12-01 | 广州迪森热能技术股份有限公司 | Biomass molding fuels |
| CN102942977A (en) * | 2012-11-21 | 2013-02-27 | 北京奥科瑞丰新能源股份有限公司 | Compound biomass fuel briquette and preparation method thereof |
| CN105419899A (en) * | 2015-12-23 | 2016-03-23 | 太仓东浔生物科技有限公司 | Biomass fuel and preparation method therefor |
| CN105542893A (en) * | 2015-12-23 | 2016-05-04 | 太仓东浔生物科技有限公司 | Biomass pellet fuel and preparation method thereof |
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Application publication date: 20170322 |