CAJ | 학술논문

不同类型的生物质具有不同的纤维组成，且每种组分的水热反应路径存在差异，同时在水热过程中组分间相互作用影响生物质的水热解行为和产物分布，该文基于兼有上、下界约束条件的极端顶点，在高温高压反应釜中对组分（半纤维素，纤维素和木质素）间的相互作用进行了详细的研究，发现3种组分间的相互作用对产物的产率和特性存在明显的影响。根据气体产物结果，可以得出纤维素水解产物能够促进半纤维素水解，生成大量的CO2气体。较高的木质素含量和较低的纤维素和半纤维素含量对轻质油中的酸类和酮类化合物有抑制作用。此外，纤维素和半纤维素与木质素之间的交互作用有利于抑制重质油中酸类化合物的生成，促进酚类化合物。三组分间的交互作用使得水解产物更多的重新发生聚合、缩合等一系列反应生成焦炭，芳香化程度较高。通过组分间的交互作用更好地理解生物质水热机理并通过产物调控制备高品质的液体燃料和固体焦炭。
불동류형적생물질구유불동적섬유조성，차매충조분적수열반응로경존재차이，동시재수열과정중조분간상호작용영향생물질적수열해행위화산물분포，해문기우겸유상、하계약속조건적겁단정점，재고온고압반응부중대조분（반섬유소，섬유소화목질소）간적상호작용진행료상세적연구，발현3충조분간적상호작용대산물적산솔화특성존재명현적영향。근거기체산물결과，가이득출섬유소수해산물능구촉진반섬유소수해，생성대량적CO2기체。교고적목질소함량화교저적섬유소화반섬유소함량대경질유중적산류화동류화합물유억제작용。차외，섬유소화반섬유소여목질소지간적교호작용유리우억제중질유중산류화합물적생성，촉진분류화합물。삼조분간적교호작용사득수해산물경다적중신발생취합、축합등일계렬반응생성초탄，방향화정도교고。통과조분간적교호작용경호지리해생물질수열궤리병통과산물조공제비고품질적액체연료화고체초탄。
The interaction among three biomass components (hemicellulose, cellulose, and lignin) in autoclave was studied in detail on the basis of the extreme vertices of a constrained region. Such interaction was found to have a distinct effect on product yield and characteristics. The yield of heavy oil was highest when the mixing proportion of the three components was 0.2:0.4:0.4 at 40.10 wt.%, and was lowest when the mixing proportion was 0.65:0.25:0.1 at 28.20 wt.%. When the mixing proportions were 0.3:0.2:0.5 and 0.2:0.3:0.5, the yield of the solid residue was as high as 14.00 wt.%. In the mixing experiment of the three components, when the cellulose proportion was high, the heavy oil and solid residue yields were low, whereas those of light oil and gas were high, which indicated that cellulose was first hydrolyzed into sugar products through hydrothermal conversion. The comparison results of the mixing and single-component experiments showed that when cellulose, hemicellulose, and lignin were mixed in different proportions to form biomass, the yield of heavy oil increased, whereas that of solid residue decreased. The yields of light oil and gas were between those of cellulose and lignin. Results of gaseous products show that products from cellulose hydrolysis could promote hemicellulose hydrolysis and generate large amounts of CO2. The interaction between cellulose and hemicellulose under different mixing proportions increased the CO2 yield compared with that of the single component. Relatively, the influence on CO, CH4, and CnHm was weak. The lignin content, as well as the low cellulose and hemicellulose contents, inhibited the acid and ketones in light oil. High lignin content could promote the hydrolysis of cellulose and hemicellulose to produce acids, and the interaction among the three components inhibited the generation of acids. In addition, the lignin proportion also affected the relative acids. When the lignin proportion was greater than 0.4, the inhibition effect of the interaction on the acids weakened. In addition, the interaction among cellulose, hemicellulose, and lignin inhibited the production of acid compounds in heavy oil and promoted phenolics. The acid in the heavy oil of lignin was mainly homovanillic acid about 9.07%. When lignin, hemicellulose, and cellulose were mixed with certain proportions, the acid in the heavy oil reduced. After mixing, the homovanillic acid was highest at only 2.4%, which indicated that the interaction among the three components inhibited the generation of acids in heavy oil, thus, improving the heavy oil quality. The interaction among the three components promoted a series of hydrolysis product reactions, such as polymerization and condensation, to generate char, thus resulting in a high degree of aromatization. The hemicellulose in the mixed proportion slightly influenced the infrared absorption peak of the char. The absorption peaks under the 1–11 mixing proportions were stronger than that of the single hemicellulose. Hemicellulose was hydrolyzed completely at 200 to 230℃ to generate gas and liquid products with CO2 and small molecular oxygen compounds as the primary outcomes, namely, sugars, acids, aldehydes, and phenols. These compounds had certain promoting functions in the hydrolysis of cellulose and lignin, and caused new condensation and polymerization on hydrolysis products to generate a solid residue.