EP2652094A1 - Combustible de co-combustion avec du charbon dans une centrale électrique au charbon à faibles émissions de co2 - Google Patents

Combustible de co-combustion avec du charbon dans une centrale électrique au charbon à faibles émissions de co2

Info

Publication number
EP2652094A1
EP2652094A1 EP11843496.8A EP11843496A EP2652094A1 EP 2652094 A1 EP2652094 A1 EP 2652094A1 EP 11843496 A EP11843496 A EP 11843496A EP 2652094 A1 EP2652094 A1 EP 2652094A1
Authority
EP
European Patent Office
Prior art keywords
coal
combustion
composition
weight
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11843496.8A
Other languages
German (de)
English (en)
Other versions
EP2652094A4 (fr
Inventor
Andrew Zaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Creedmore Pty Ltd
Original Assignee
Creedmore Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2010905227A external-priority patent/AU2010905227A0/en
Application filed by Creedmore Pty Ltd filed Critical Creedmore Pty Ltd
Publication of EP2652094A1 publication Critical patent/EP2652094A1/fr
Publication of EP2652094A4 publication Critical patent/EP2652094A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y02T50/678—Aviation using fuels of non-fossil origin

Definitions

  • the present invention relates to an alternative fuel from waste materials for co- combustion with coal in a coal fired power plant, which fuel has low C ⁇ 3 ⁇ 4 emission compared to coal. More particularly the present invention relates to an alternative fuel from waste materials including waste oils and other industrial by-products, suitable for co-combustion with coal in a coal fired power plant to reduce CO 2 emissions of coal fired power plants while retaining combustion efficiency.
  • Coal is predominantly used in power stations, compared to natural gas and oil, to generate electricity because of its relatively low cost. Coal generated electricity is used for many applications including lighting, heating, cooling, cooking, industry and farming.
  • Coal fired power plants also produce solid waste ash from coal-fired boilers which must be removed. Roughly 80% of the waste ash falls into an ash hopper, but the rest of the ash is carried into the atmosphere to become coal-fly ash. Particulate matter from coal- fired plants can be harmful and have negative health impacts. Studies have shown that exposure to particulate matter is related to an increase of respiratory and cardiac mortality. Particulate matter can irritate small airways in the lungs, which can lead to increased problems with asthma, chronic bronchitis, airway obstruction, and gas exchange.
  • One method of helping to reduce the particulate matter emissions from coal- fired plants includes an electrostatic precipitator.
  • a frequently used method is to convert an existing power plant to run on a different fuel. This includes conversions for the use of biomass waste. While conversions to biomass waste- fired power plants have the benefit of reducing landfill, the cost of conversion can be very high.
  • a typical co-firing installation includes modifications to the fuel-handling and storage systems and possibly the burner to accommodate biomass. Costs can increase significantly if wood needs to be dried, size needs to be reduced, or the boiler requires a separate feeder.
  • the incentive to use coal remains high because coal reserves are abundant which effectively keeps the cost of electricity for industrial and domestic use at a reasonably low level hence coal is still preferred.
  • CCS Carbon capture and storage
  • a fuel composition for co-combustion with coal in a coal fired power station having substantially reduced C0 2 emissions while retaining combustion efficiency, and including:
  • composition when the composition is subject to combustion the composition exhibits a C0 2 emission of less than about 2%, an S0 2 emission of less than about 0.2% by weight, an ash content of less than about 1% by weight, and a net calorific value of greater than about 25 MJ g. .
  • the fuel composition of the present invention can be efficiently burnt with coal in an exiting power station to generate electricity cost effectively while significantly lowering carbon emissions.
  • the present invention therefore represents a significant improvement in reducing flue gas emissions in coal fired power stations.
  • co-combustion of coal with the composition of the present invention has the effect of reducing C0 2 emissions, reducing ash content and other substances such as N 2 , nitrogen oxides, sulfur oxides, while the energy produced from combustion of the composition in the form of heat is at least equal to the heat produced by burning coal.
  • a further advantage of the present invention is that co-combustion of the composition with coal produces heat of combustion equal to or greater than that produced by combustion of coal.
  • An even further benefit of the instant invention is that waste materials are used including waste oil, and cellulose, which would otherwise go to landfill.
  • a further economic advantage is achieved to local communities and power plant employees by co-combustion of coal with the present invention because reduced carbon emissions may prolong usefulness of coal fired power stations.
  • the cellulose material can be reclaimed MDF (rMDF) . It is preferred that the rMDF is pre-treated with a water resistant material.
  • the waste oil can be selected from a range of sources including spent motor oils, spent aviation fuels, spent marine fuels, lubricants, vegetable oils, animal fats, municipal waste, camellina, algal oil, sewage sludge, babasu, cooking oils, fuel oils and the like.
  • a solid fuel composition for co-combustion with coal in a coal fired power plant including:
  • a waste oil such as engine oil, present in an amount of between about 10 to 20% by weight;
  • a cellulose material capable of absorbing the waste oil, wherein the cellulose material is present in an amount of about 80 to 90% by weight;
  • composition when the composition is subject to combustion the composition exhibits a C0 2 emission of less than about 2%, an S0 2 emission of less than about 0.2% by weight, an ash content of less than about 1% by weight, and a net calorific value of greater than about 25 MJ/Kg.
  • the fuel composition can further include an effective amount of a material or mixture of materials selected from grasses, plants (including extracts derived therefrom), trees, animal waste, algae, hemp, coconut, rice husks, and corn.
  • the material can include a mixture of mallee grass and timber pulp such as sawdust.
  • the material can be selected from one or more of maize, wheat, reed canary grass, Jerusalem artichoke, sunflower, potatoes, barley, sugar beets, switchgrass, mallee eucalypts, hybrid poplar, willow, cottonwood, sycamore, canola oil, animal fats (such as tallow), recycled grease, fungus, pongamia pinnata, dryland juncea, kudzu, giant miscanthus, phragmites australis, arundinella nepalensis, themeda avenacea, jatropha curcus, yeast, sugar cane, starch, red sorghum, palm oil.
  • a solid fuel composition for co-combustion with coal in a coal fired power plant including:
  • a waste oil such as engine oil, present in an amount of between about 10 to 20% by weight;
  • a cellulose material capable of absorbing the waste oil, wherein the cellulose material is present in an amount of about 75 to 85% by weight;
  • composition when the composition is subject to combustion the composition exhibits a C0 2 emission of less than about 2%, an S0 2 emission of less than about 0.2% by weight, an ash content of less than about 1% by weight, and a net calorific value of greater than about 25 MJ/Kg.
  • waste oil such as engine oil or the like
  • the method including the steps of:
  • the fuel burns at about 1100 degrees C with substantially reduced C0 2 emissions and a resulting ash content of less than about 1%.
  • the method of producing a fuel for co-combustion of coal can further include addition of about 5% by weight of material selected from one or a combination of grasses, plants, trees, algae, hemp, coconut, rice husks, and corn.
  • the material can include a mixture of mallee grass and timber pulp such as sawdust, to the cellulose material prior to addition of waste filtered oil.
  • a method of preparing a fuel composition for co-combustion with coal in a coal fired power station including:
  • a source of waste oil selected from spent engine oil, spent aviation fuel, spent marine fuels, lubricants, vegetable oils, animal fats, municipal waste, camellina, algal oil, sewage sludge, babasu, cooking oils, fuel oils and the like; and
  • rMDF reclaimed MDF
  • waste oil is preferentially absorbed by the pre-treated rMDF to form a coagulated mixture having substantially low water content; and wherein the. mixture provides an alternative fuel source for co-combustion with • coal in a coal fired power plant with low carbon emission and low ash content while substantially maintaining combustion efficiency.
  • the method of the present invention represents an improvement over prior art waste oil reclamation systems and methods. It is found unexpectedly that the mixture formed from the method of the invention burns very efficiently leaving a low ash content. The mixture therefore provides an alternative fuel source which has the ability to produce energy efficiently, reduce reliance on fossil fuel reserves, replace coal and reduce carbon emissions.
  • an amount of rMDF pre-treated with a water resistant coating in an amount of between about 10% to 20% by weight of the composition, and wherein the treated rMDF is capable of absorbing an amount of oil in waste oil in a ratio of oil to water of between about 5 to 15 times the amount of water absorption;
  • composition in the tank contains about 10 to 20% by weight of the waste oil
  • An advantage of the present invention is that the alternative fuel source provides minimal residual waste at a power plant.
  • the fuel source can be used as a substitute to coal and in comparison to coal there is provided a significant reduction in post- combustion residue.
  • a solid fuel for co- combustion with coal produced from the method of the invention can include:
  • a substantially solid fuel block containing water resistant rMDF and waste oil wherein the amount of waste oil absorbed by the water resistant rMDF is between about 5 to 15 times the amount of water in the waste oil;
  • combustion of the block produces an emission of PCDD/F of substantially about 0.1 TEQ ng/Nm3.
  • the solid fuel block containing water resistant rMDF and waste oil burns efficiently and can substitute coal in conventional combustion systems.
  • One advantage of the improved system is that waste oil and waste MDF can be reclaimed and combined to provide a fuel source that can replace or co-combust with conventional fossil fuels including coal.
  • the solid alternative fuel represents an advance over prior art systems. Without wishing to be bound by any theory, it is postulated that pre-treating the rMDF with a water resistant material gives the rMDF material oil super absorbency properties. In the presence of waste oil, the pre-treated rMDF is capable of preferentially absorbing oil in an amount of at least five times that of water. This significantly alters the absorption uptake of oil to water in the waste oil to produce a coagulant mixture with low water content.
  • an alternative fuel source including: a substantially solid fuel having a composition containing an effective amount of rMDF pre-treated with a water resistant material, and waste oil wherein the waste oil is absorbed by the treated rMDF in a ratio of waste oil to water of about 5:1 to 15: 1 ;
  • composition has a moisture content of less than about 18%w/w; and wherein the solid fuel is combustible whereby a residue of less than about 17%w/w of the waste product remains post combustion.
  • the solid fuel is adapted for substituting coal in combustion or co-combustion with improved fuel efficiency and concomitant conservation of fossil fuel reserves.
  • a further advantage of the product of the present invention is that emitted combustion gases are reduced compared to corresponding fossil fuels and reduce the environmental effects otherwise associated with fossil fuels. Hence the product of the invention represents a substitute for the fossil fuel industry.
  • waste oils can include waste materials from heavy and light industry, restaurants, fast food chains, households including Automotive Waste Oil (inc. mineral), Cooking Oils, coconut Oil (& fibrous husks)
  • Reclaimed Cellulose waste can be obtained from building by-products, wood and wood based particle board, Straw, Coffee grounds, Olive pips, Fly ash (after burden) of current brown coal and the like.
  • waste oil is preferentially absorbed by the pre-treated cellulose to form a coagulated mixture having substantially low water content
  • the mixture provides an alternative fuel source with low ash content for substituting coal and the like in combustion.
  • an alternative fuel including:
  • substantially solid fuel block containing substantially reclaimed cellulose and waste oil, wherein the reclaimed cellulose has been pre-treated with a water resistant material effective to absorb the waste oil in an amount between about 5 to 15 times the amount of water in the waste oil;
  • combustion of the block produces a calorific value equal to or greater than brown coal and an ash content of less than about 5% by weight.
  • a fuel composition for co-combustion with coal in a coal fired power station was prepared in accordance with the method of the present invention.
  • the method includes obtaining rMDF fibres and subjecting the fibres to a pre-treatment with a water resistant coating of a synthetic resin.
  • a source of waste engine oil in an amount of 20% by weight of the composition was delivered and subjected to decanting at a temperature of about 0 degrees C to remove visible water.
  • the pre-treated rMDF is comminuted by filtering to obtain an average particle size in the range of less than about 1mm in diameter.
  • the comminuted rMDF is passed through a vibrating hopper and an amount of about 80% by weight of the total composition is introduced into a mixing tank.
  • the decanted waste engine oil is progressively added to the rMDF in the mixing tank to form a composition with the rMDF.
  • the composition was allowed to air dry in the mixing tank at ambient temperature for about 24 to 48 hours to form a coagulant mixture.
  • a sample of the coagulant mixture was removed from the mixing tank and analysed.
  • the coagulant composition was found to have a moisture content of 12%w/w.
  • the coagulant composition was subject to compression to form a solid block.
  • the solid fuel block was subject to combustion and a residue of less than about 17%w/w of the waste product remained post combustion.
  • the coagulant composition is analysed, if required additives are injected, then the coagulant mass is combined through a screw mixing process, compressed and extruded into a solid fuel product.
  • the solid product is then ready for shipment to the power plants to be loaded onto conveyor systems and into a boiler feed silo's ready to burn.
  • the waste can be combined before transport (coagulated) making it very stable and safe as the mixture has ah extremely low flash point and therefore is easier to transport by rail, road, ship and the like.
  • rMDF wood fibre
  • waste products required to formulate the fuel include oil (crude, automotive, cooking) and wood fibre, these are available in abundant quantities around the globe, which otherwise go to landfill or are only partially recovered.
  • waste management takes wood fibre such as rMDF that is currently dumped as landfill and waste oils (including crude, automotive, cooking, aviation fuels, engine oils etc.) that is disposed of in environmentally unfriendly or cost effective ways, and converts waste into energy with low residual waste ash (after burden) that could be combined with fertiliser and returned to the ground.
  • the fuel composition obtained from example 1 has undergone a series of analytical tests following combustion to compare technical properties with brown coal (lignite) as a source of co-combustion in existing power plants.
  • the technical results are produced in Table 1 (refer below).
  • a fuel composition for co-combustion with coal in a coal fired power station was prepared in accordance with the method of the present invention including obtaining rMDF fibres and select combined materials comprising Malee tree, Saw dust, Eucalyptus tree/ leaves, Olive tree/leaves, and used paper.
  • the rMDF fibres were pre-treated with a water resistant spray coating of a synthetic resin.
  • a source of waste engine oil in an amount of about 15% by weight of the composition was delivered and subjected to decanting at a temperature of about 0 degrees C to remove visible water.
  • the pre-treated rMDF and select combination of materials is comminuted by filtering to obtain an average particle size in the range of less than about 1mm in diameter.
  • the comminuted rMDF and select materials was passed through a vibrating hopper and introduced into a mixing tank.
  • the decanted waste engine oil is progressively added to the rMDF and the select combined materials in the mixing tank to form a composition.
  • the composition was allowed to air dry in the mixing tank at ambient temperature for about 24 to 48 hours to form a coagulant mixture.
  • the coagulant composition is compressed and extruded into a solid fuel product through a screw mixing process, and analysed.
  • the fuel composition obtained from example 2 has undergone a series of analytical tests following combustion to compare technical properties with the composition of example 1 and brown coal (lignite).
  • the technical results are produced in Table 1 (refer below).
  • Table 1 below compares brown coal norms with the fuel composition of the present invention as obtained in examples 1 and 2 initial laboratory combustion testing.
  • Preliminary crude testing of co-combustion efficiency between brown coal and the fuel composition of the present invention was conducted using a test sample of the fuel composition obtained from example 2.
  • a base load of fuel composition from example 2 was ignited in the presence of a sample of ground brown coal under ambient temperature and pressure conditions.
  • the test exhibited accelerated burning of brown coal compared to a sample of brown coal on its own.
  • the fuel composition of the invention improves combustion efficiency of coal.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

L'invention concerne une composition de combustible solide pour co-combustion avec du charbon dans une centrale électrique au charbon, la composition comprenant : une huile usée telle qu'une huile de moteur, dans une proportion massique de 10 % à 20 % ; un matériau en cellulose capable d'absorber l'huile usée, dans une proportion massique de 75 % à 85 % ; et une proportion massique d'environ 5 % d'un matériau ou d'un mélange de matériaux tels que des herbes, des plantes, des arbres, des algues, du chanvre, de la noix de coco, des balles de riz et du maïs. Lorsque la composition est brûlée, elle émet moins d'environ 2 % de CO2, moins d'environ 0,2 % massique de SO2, le taux de cendre est de moins d'environ 1 % massique, et son pouvoir calorifique inférieur est supérieur à environ 25 MJ/kg.
EP11843496.8A 2010-11-25 2011-11-25 Combustible de co-combustion avec du charbon dans une centrale électrique au charbon à faibles émissions de co2 Withdrawn EP2652094A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010905227A AU2010905227A0 (en) 2010-11-25 Method of reclaiming waste oil and Alternative Solid Fuel Therefrom
PCT/AU2011/001538 WO2012068640A1 (fr) 2010-11-25 2011-11-25 Combustible de co-combustion avec du charbon dans une centrale électrique au charbon à faibles émissions de co2

Publications (2)

Publication Number Publication Date
EP2652094A1 true EP2652094A1 (fr) 2013-10-23
EP2652094A4 EP2652094A4 (fr) 2014-04-30

Family

ID=46145305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11843496.8A Withdrawn EP2652094A4 (fr) 2010-11-25 2011-11-25 Combustible de co-combustion avec du charbon dans une centrale électrique au charbon à faibles émissions de co2

Country Status (4)

Country Link
EP (1) EP2652094A4 (fr)
CN (1) CN103732727A (fr)
AU (1) AU2011334546A1 (fr)
WO (1) WO2012068640A1 (fr)

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CN102703155B (zh) * 2012-06-27 2014-05-28 环境保护部南京环境科学研究所 基于污泥-秸秆-原煤的生物质燃料及其制备方法和燃料炉渣的应用
PL405730A1 (pl) * 2013-10-22 2015-04-27 Elżbieta Tkacz Paliwo stałe w szczególności dla przemysłu energetycznego i sposób jego wytwarzania
CN105038892A (zh) * 2015-06-11 2015-11-11 张家港市山牧新材料技术开发有限公司 一种清洁型生物燃料及其制备方法
PL229824B1 (pl) * 2015-07-31 2018-08-31 Skotnicki Wieslaw Zastosowanie ciekłego smaru
DE102016115664A1 (de) 2016-08-24 2018-03-01 Uwe Grigoleit Brennstoffe und Anzündhilfen aus modifizierten, nachwachsenden Rohstoffen
CN106190341A (zh) * 2016-08-25 2016-12-07 桂林九马新动力科技有限公司 一种生物质燃料及其制备方法
CN116592341A (zh) * 2023-04-10 2023-08-15 广西大学 一种桉树与煤混燃预处理装置

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AU6440465A (en) * 1966-09-14 1968-03-14 George Haigh Alan Oil-fiberboard fire lighters
US4485584A (en) * 1983-08-12 1984-12-04 Raulerson Products Manufacturing Company, Inc. Ignitable fuel and fire starting composition
US5244472A (en) * 1987-05-13 1993-09-14 Simmons John J Preparation of chemically dried cellulosic fuel
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CN103732727A (zh) 2014-04-16

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