林产化工工艺学

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1、林产化工工艺学 86、3、CItisoneof thecorecoursesformymajor.Thiscourseisalsocalledthe biomassutilizationtechnology,biomassutilizationrefersto thebiomassplantresourcesasrawmaterial,throughchemicalandbiochemistrymethodsprocessto getallkindsofhighvalue-addedproducts.Thiscou

2、rsemainlyintroducesthe hydrolysisandpyrolysistechnology ofbiomass materials.一、生物质原料水解工艺学 Hydrolysistechnologyofbiomassmaterials Inbiomasshydrolysisthispart,wemainlystudied第一章  水解工业原料hydrolysisindustrialmaterials        1、materialtypes：          deforestation、w

3、oodprocessing、plantwasteofcropprocessing 第二章  植物原料水解工艺plantmaterialhydrolysisprocess    一、植物原料稀硫酸水解工艺       Plantmaterial dilutesulphuricacidhydrolysisprocess      1.工艺手段technologicalmeans   二、纤维素的酶水解enzymatichydrolysis ofcellulose      Itisaprocessthat uses c

4、elluloseenzyme secretedbymicrobial asthecatalyst,hydrolyzethecellulose.    三、多糖浓酸水解Polysaccharideconcentratedacidhydrolysis    四、高温水解pyrohydrolysis（[paiərəuhai'drɔlisis]）         指水解的温度高于200度，在无催化剂的情况下自动水解的过程。       Referstothe automaticalhydrolysis processtha

5、tthehydrolysistemperatureishigherthan200degrees,withoutcatalyst        1. extrusion method:（挤压法水解）      Thescatteredmaterialaresuppliedtothepressurehydrolysisareabyusingextrusionmachine，todeformthehydrolyzematerial.     2.explosion method:（爆炸法水解）      underhig

6、htemperature,existwater,  acetyl（乙酰基）fallsofffrom hemicellulose,toformthecatalyst——aceticacid,instantaneouslyreducepressure,so water boil, particleoftherawmaterialsexplodetoform finefiber，hemicelluloseandligninseparate.第三章  植物原料稀酸水解理论plantmaterialtheoryofdilut

7、eacidhydrolysis   一、Polysaccharideglycosidebondcrackingmechanism（机理）      Polysaccharidemoleculesunitringstructureismonosaccharides，whichconnectwith O（oxygen）-glycosidebond witheachother.Hydrolysisprocessistoachievethepurposeofthedestructionofglycosides.  二、Th

8、e basickinetics ofhydrolysisreaction（基本动力学）            P多糖     D中间产物（低聚糖）    G单糖       F呋喃衍生物     R转换产物polysaccharide    ？oligosaccharide   glycose      furanderivatives      ？   三