CAJ | 학술논문

生物质热解多联产是对生物质高值化转化的良好工艺之一。该文研究了温度对棉杆热解多联产过程的影响，主要分析了棉杆热解过程中气、液、固产物的分布特性与物化结构。研究表明随着温度的上升，气态产物增加，焦炭产量降低。采用气相色谱仪分析气体产物的分布特性，C02主要在250-450℃之间析出，氢气主要在550-850℃之间析出，氢气、甲烷的含量最高为33％、9．8％，其热值可达11MJ／m^3。采用气质联用仪分析液体产物的组成特性，液体产率达到40％，水分达到液体组成的60％-70％，液体中有机成分以乙酸、苯酚类物质为主。采用氮气等温吸附实验和傅里叶红外光谱分析焦炭的物理化学特性，随着温度的上升，焦炭的孔隙度先增加后降低，各种官能团逐渐减少；焦炭比表面积、低位热值最大可达到232m^2／g、28MJ／kg。
생물질열해다련산시대생물질고치화전화적량호공예지일。해문연구료온도대면간열해다련산과정적영향，주요분석료면간열해과정중기、액、고산물적분포특성여물화결구。연구표명수착온도적상승，기태산물증가，초탄산량강저。채용기상색보의분석기체산물적분포특성，C02주요재250-450℃지간석출，경기주요재550-850℃지간석출，경기、갑완적함량최고위33％、9．8％，기열치가체11MJ／m^3。채용기질련용의분석액체산물적조성특성，액체산솔체도40％，수분체도액체조성적60％-70％，액체중유궤성분이을산、분분류물질위주。채용담기등온흡부실험화부리협홍외광보분석초탄적물이화학특성，수착온도적상승，초탄적공극도선증가후강저，각충관능단축점감소；초탄비표면적、저위열치최대가체도232m^2／g、28MJ／kg。
Biomass ploy-generation system based on pyrolysis is a good high-value process of biomass conversion. The impact of the pyrolysis temperature on cotton stalk ploy-generation was investigated, and the evolution of distribution, physical and chemical characteristics of gas, liquid and solid product was focused. This study shows that the yield of gas product increase but the yield of the char product decrease with temperature increasing. The distribution and characteristics of the product gas were analyzed by gas chromatography （GC）, and the result shows that CO2 mainly releases between 250 to 450 ℃ while Hz mainly releases between 550 to 850 ℃. The content of HE, CH4 are up to 33%, 9.8%, respectively, and its heat value is up to 11 MJ/m^3. The characteristics and composition of liquid products were analyzed by gas chromatograph-mass spectrometer （GC-MS）. The yield of liquid product is up to 40%, and about 60%-70% weight of liquid is water, while the main component of organic content are acid, phenol-based substances. The nitrogen adsorption analysis and Fourier transform infrared spectrum （FTIR） were carried out to obtain the pore characteristic and chemical properties of char product, respectively. Increasing temperature, the porosity of char increases firstly but reduces at high temperature. A variety of functional groups are gradually reduced. The surface area and lower heat value （LHV） Of char is up to 232 m^2/g, 28 MJ/kg, respectively.