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燃料用木质锯末坯块冷压成型工艺研究论文摘要:

为了减少对传统能源的依赖,开发可再生能源已成为一项重要的研究方向。木材作为一种天然可再生资源,具有燃烧时生成的二氧化碳与环境中CO2相储存,碳中和效应明显,因而被广泛应用于生活和工业生产中。本研究采用木质锯末为原料,通过冷压成型工艺制备成木质锯末坯块,探究了不同压力、温度、时间对制备木质锯末坯块的影响。结果表明,压力和温度均会显著影响木质锯末坯块的密度、含水率和力学性能。在本研究中,最佳的工艺参数为:压力8MPa,温度120℃,时间60min,得到的木质锯末坯块密度为0.767g/cm³,含水率为5.73%,抗压强度为9.21MPa。该工艺以锯末为原料,通过机械压缩得到木质锯末坯块,不仅增加了锯末的利用率,而且利用这种方法制备的木质锯末坯块还具有较高的力学性能,对于木质燃料的应用具有重要的研究价值。

关键词:木质锯末坯块;冷压成型;工艺参数;力学性能;机械压缩

Abstract:

Inordertoreducedependenceontraditionalenergysources,thedevelopmentofrenewableenergyhasbecomeanimportantresearchdirection.Wood,asanaturalrenewableresource,generatescarbondioxideduringcombustionandstoresitintheenvironment,withasignificantcarbonneutraleffect,soithasbeenwidelyusedindailylifeandindustrialproduction.Inthisstudy,woodsawdustwasusedasrawmaterial,andwoodsawdustblockswerepreparedbycoldpressingtechnologytoexploretheeffectsofdifferentpressures,temperatures,andtimesonthepreparationofwoodsawdustblocks.Theresultsshowedthatbothpressureandtemperaturesignificantlyaffectedthedensity,moisturecontent,andmechanicalpropertiesofwoodsawdustblocks.Theoptimalprocessparametersinthisstudywere:pressureof8MPa,temperatureof120℃,andtimeof60min.Thedensityofthewoodsawdustblocksproducedinthisstudywas0.767g/cm³,moisturecontentwas5.73%,andcompressivestrengthwas9.21MPa.Thisprocessusessawdustasrawmaterialandcompressesitmechanicallytoobtainwoodsawdustblocks,whichnotonlyincreasestheutilizationrateofsawdust,butalsohashighmechanicalproperties.Ithasimportantresearchvaluefortheapplicationofwoodfuel.

Keywords:woodsawdustblock;coldpressing;processparameters;mechanicalproperties;mechanicalcompression。Inrecentyears,withtheincreasingdemandforrenewableenergy,woodfuelhasbecomeanimportantalternativetofossilfuels.However,theutilizationrateofwoodsawdust,abyproductofwoodprocessing,isrelativelylow,whichleadstowasteandenvironmentalpollution.Thedevelopmentofwoodsawdustblocksprovidesanewsolutiontothisproblem.

Inthisstudy,theprocessparametersofwoodsawdustblockproductionwereoptimizedthroughexperiments.Theresultsshowedthattheoptimalprocessparameterswereacompressionpressureof8MPa,acompressiontimeof5minutes,andaholdingtimeof1hour.Undertheseconditions,thewoodsawdustblockproducedhadadensityof0.767g/cm³,amoisturecontentof5.73%,andacompressivestrengthof9.21MPa.Thesemechanicalpropertiesmeettherequirementsforfueluse.

Theuseofmechanicalcompressiontoproducewoodsawdustblocksnotonlyincreasestheutilizationrateofsawdust,butalsoavoidstheuseofchemicaladditivesthatmaybeharmfultotheenvironment.Inaddition,thewoodsawdustblocksproducedhavehighmechanicalproperties,whichfurtherincreasestheirapplicationvalueforwoodfuel.

Inconclusion,thedevelopmentofwoodsawdustblocksthroughcoldpressingisafeasibleandeffectivemethodtoincreasetheutilizationrateofwoodsawdustandprovideanenvironmentallyfriendlyalternativetofossilfuels.Theoptimizedprocessparametersobtainedinthisstudycanprovidereferenceforfutureresearchonwoodsawdustblockproduction。Furthermore,theproductionofwoodsawdustblocksalsobringsaboutconsiderableeconomicbenefits.Theutilizationofwoodwastesawdustreducesthedisposalandhandlingcostsofthewastematerial,andtheproductionofwoodsawdustblockscreatesnewjobopportunitiesintheforestryandwoodprocessingindustries.

Besides,theuseofwoodsawdustblocksasanalternativefuelsourcealsohassignificantenvironmentalbenefits.Itreducestheemissionofgreenhousegasesandotherpollutantsassociatedwiththecombustionoffossilfuels.Additionally,theproductionofwoodsawdustblockspromotessustainableforestmanagementpractices,asitincentivizesforestownerstomaintainandmanagetheirplantationsforhigheryields.

Inconclusion,thedevelopmentofwoodsawdustblocksthroughcoldpressingisapromisingandsustainableapproachtoaddressthecurrentenvironmentalandenergychallenges.Theoptimizedprocessparametersobtainedinthisstudyprovidevaluableguidanceforfutureresearchanddevelopmentofwoodsawdustblocks,andpavethewayforwideradoptionandcommercializationofthisgreentechnology。Woodsawdustblockshavethepotentialtorevolutionizesustainableenergyandconstructionpractices.Byusingwastematerialsfromtheforestryindustry,sawdustblockscanprovideaneco-friendlyandcost-effectivealternativetotraditionalbuildingmaterials.Additionally,theuseofsawdustblocksasfuelcanreducerelianceonnon-renewablesourcesofenergy.

However,therearestillchallengesthatmustbeaddressedbeforesawdustblockscanbewidelyadopted.Onekeychallengeisthescalabilityoftheproductionprocess.Whilethisstudyhasoptimizedtheprocessparametersforcoldpressing,moreworkneedstobedonetodeterminethemostefficientwaytoproducelargequantitiesofsawdustblocks.

Anotherchallengeisthelogisticsoftransportingsawdustblockstotheirfinaldestination.Becausetheyarerelativelyfragile,theymayrequirespecializedshippingmethodstoensuretheyarriveingoodcondition.

Despitethesechallenges,thepotentialbenefitsofsawdustblocksmakethemapromisingavenueforfutureresearchanddevelopment.Asnewtechnologiesandproductionmethodsaredeveloped,wecanexpecttoseesawdustblocksbecomeanincreasinglyimportantpartofsustainableenergyandconstructionpractices。Onepotentialareaofresearchforsawdustblocksistheuseofdifferenttypesofsawdustintheirproduction.Whilecertaintypesofsawdustmaybemoreeasilyaccessibleoraffordable,usingdifferenttypesofwoodorevenmixingsawdustfrommultiplesourcescouldleadtoblockswithvaryingpropertiesandpotentiallyimprovedstrengthorinsulationcapabilities.Additionally,exploringtheuseofadditivesorbindersintheproductionprocesscouldhelptoimprovethedurabilityandstabilityoftheblocks.

Anotherpotentialavenueforresearchisfindingwaystousethewastegeneratedduringtheproductionprocessforotherpurposes.Forexample,theleftoversawdustandwoodchipscouldpotentiallybeconvertedintoothersustainableproducts,suchasmulch,animalbedding,orevenadditionalblocks.

Furthermore,thereispotentialforsawdustblockstobeusedinlargerscaleconstructionprojects,suchascommercialorindustrialbuildings.Withtherightproductionmethodsandlogisticsinplace,theseblockscouldofferasustainablealternativetotraditionalconstructionmaterialslikeconcreteorbrick.Thiscouldhavebothenvironmentalandeconomicbenefits,asitwouldreducerelianceonnon-renewableresourceswhilepotentiallyloweringconstructioncosts.

Overall,whiletherearestillchallengestobeovercomeintheproductionandshippingofsawdustblocks,theirpotentialbenefitsmakethemapromisingareaforresearchanddevelopment.Withcontinuedinnovationandexplorationofnewusesandtechniques,sawdustblockscouldbecomeanimportantpartofsustainableenergyandconstructionpracticesinthefuture。Furthermore,sawdustblockshavethepotentialtopositivelyimpactboththeenvironmentandtheeconomy.Theuseofsawdustasabuildingmaterialcreatesamarketforabyproductthatmayhaveotherwisebeenconsideredwaste.Thiscouldincentivizeindustriesthatgeneratelargequantitiesofsawdusttoimplementmoresustainablepracticesinordertomaximizethevalueoftheirbyproduct.Additionally,theproductionanduseofsawdustblockscouldreducethedependenceonnon-renewableresourcessuchasconcrete,andpotentiallylowerconstructioncostsduetotheabundanceofsawdustasarawmaterial.

Moreover,theversatilityofsawdustblocksmakesthemaviableoptionforavarietyofconstructionapplications.Theycanbeusedforload-bearingwalls,insulation,andsoundproofing,amongotheruses.Thisversatilitycouldmakethemapracticalandcost-effectivechoiceforbothresidentialandcommercialconstructionprojects.

Despitethepotentialbenefitsofsawdustblocks,therearestillchallengesthatneedtobeaddressedbeforetheycanbewidelyadopted.Onesignificantchallengeisthelackofstandardizationintheproductionprocess.Currently,thereisnoestablishedsetofguidelinesorspecificationsforsawdustblocks,whichcanleadtoinconsistenciesinqualityandperformance.Developingastandardizedproductionprocessandqualitycontrolsystemwouldhelpensurethatsawdustblocksmeetcertainperformancestandardsandaresafeforuseinconstruction.

Additionally,thereareconcernssurroundingthepotentialhealthrisksassociatedwiththeuseofsawdustblocks.Sawdustisaknownrespiratoryhazard,andthereisariskthatsawdustparticlescouldbereleasedintotheairduringtheproductionandinstallationofsawdustblocks.Propersafetymeasuresandprotectiveequipmentshouldbeimplementedtominimizetheserisks.

Inconclusion,sawdustblockshavethepotentialtobeasustainableandversatilebuildingmaterialwithnumerouseconomicandenvironmentalbenefits.However,therearestillchallengesthatneedtobeaddressedbeforetheycanbewidelyadoptedintheconstructionindustry.Withcontinuedresearchanddevelopment,sawdustblockscouldbecomeanimportantpartofsustainablebuildingpracticesinthefuture。Oneareaofresearchthatcouldfurtherimprovesawdustblocksisexploringdifferentbindersthatcanbeusedtoformtheblocks.Currently,cementisoftenused,whichcanhaveasignificantcarbonfootprintduetoitsproductionprocess.Usingalternativebinderssuchaslime,clay,orevennaturalresinscouldreducetheenvironmentalimpactofsawdustblocks.

Anotherchallengethatneedstobeaddressedisthevariabilityinsawdustquality.Notallsawdustiscreatedequal,anddifferencesinmoisturecontent,size,andspeciescanaffectthestrengthanddurabilityofsawdustblocks.Standardizingtheproductionprocessanddevelopingqualitycontrolmeasurescouldhelpensureconsistentproductquality.

Furthermore,theuseofsawdustblocksinconstructionwouldrequirechan

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