预处理技术在生物质热化学转化中的应用_刘华敏

《预处理技术在生物质热化学转化中的应用_刘华敏》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、PＲOGＲESSINCHEMISTＲY化学进展DOI:10.7536/PC130602*预处理技术在生物质热化学转化中的应用1＊＊21刘华敏马明国刘玉兰(1．河南工业大学粮油食品学院郑州450001;2．北京林业大学林木生物质化学北京市重点实验室北京100083)摘要随着化石燃料的不断消耗和气候的变化，生物质能作为一种可再生能源越来越受到关注。生物质可以通过生物法和热化学法转化成有用的燃料，热化学转化技术因其可以将生物质高效地转化生成气体、液体和固体燃料使其占有主导地位。对生物质进行预处理可以改变其物理化学特性，并且这些改变影响着后期热化学转化生物质产品

2、的品质和收率。本文综述了生物质预处理技术在热化学转化技术方面的应用进展。对生物质进行烘焙预处理改变其可磨性，疏水性。生物质热裂解之前对原料进行脱灰分减少了生物质中的灰分，改变了生物质热裂解液化的产品分布。预处理液化相对直接高压液化生物油收率大大提高，同时最优化反应温度也大大降低。关键词预处理气化热裂解液化中图分类号:O642.3;TK6文献标识码:A文章编号:1005-281X(2014)01-0203-11ApplicationsofPretreatmentinBiomassThermo-ChemicalConversion*Technology1＊＊

3、21LiuHuaminMaMingguoLiuYulan(1．CollegeofFoodScienceandTechnology，HenanUniversityofTechnology，Zhengzhou450001，China;2．BeijingKeyLaboratoryofLignocellulosicChemistry，BeijingForestryUniversity，Beijing100083，China)AbstractWiththeincreasingconsumptionoffossilfuelsandthegrowingconcerns

4、aboutclimatechange，biomassisdrawingincreasingattentionasarenewableenergysourceduetoitsadvantagesofrenewalandabundance．Biomasscanbeconvertedintoenergyusingbio-chemicalandthermo-chemicalprocesses，butthethermo-chemicalconversiontechnologyfindsitsdominancebecauseofhighefficientconver

5、siontogas，liquidandsolidproductsunderthermalconditions．Biomasspretreatmentcanalterthephysicalfeaturesandchemicalcomposition/structureoflignocellulosicmaterials．Thepretreatmentstephasasignificantinfluenceonthequalityandyieldofproductsobtainedfromthermo-chemicalconversionbiomass．In

6、thisreview，wediscusstheapplicationsofvariouspretreatmentmethodsinthebiomassthermo-chemicalconversion，includingtorrefactionandgasification，pretreatmentandbiomasspyrolysis，pretreatmentandbiomassliquefaction．Torrefactionimprovesthehydrophobicityandgrindabilitycharacteristicsofbiomas

7、smaterials．Wateroracidwashingpretreatmentcanremovemetalionsfrombiomassandthechangeinproductsdistributionduringthebiomasspyrolysisismoreobvious．Biomasspretreatmentandliquefactioncanincreasethebio-oilyieldanddecreasetheoptimumreactiontemperaturecomparedtotheuntreatedbiomassliquefac

8、tionexperiments．Keywordspretreatment;gas