近临界水处理废次烟叶工艺条件及优化  

Technological conditions and optimization of near-critical water treatment of waste tobacco leaves

作　　者：刘兆洋 贾国涛 朱治忠 殷全玉[1] 付宏喆 赵祥宇 栗鼎钧 杨欣玲 张明月 LIU Zhaoyang;JIA Guotao;ZHU Zhizhong;YIN Quanyu;FU Hongzhe;ZHAO Xiangyu;LI Dingjun;YANG Xinling;ZHANG Mingyue(Tobacco College,Henan Agricultural University,Zhengzhou 450002,Henan,China;China Tobacco Henan Industrial Company,Zhengzhou 450002,Henan,China)

机构地区：[1]河南农业大学烟草学院,河南郑州450002 [2]河南中烟工业有限责任公司,河南郑州450002

出　　处：《化工进展》2024年第4期1720-1730,共11页Chemical Industry and Engineering Progress

基　　金：河南省科技研发计划联合基金(222103810005);河南省高等学校重点科研项目(23A210022);河南中烟工业有限公司技术开发分公司项目(2021410001300085)。

摘　　要：为了探究近临界水处理废次烟叶制备生物油的最佳工艺条件,本文采用单因素试验设计,考察反应温度、固液比、保温时间对烟叶生物油产率的影响,并通过正交试验,对近临界水处理废次烟叶的工艺条件进行优化。结果表明:近临界水液化烟叶的最佳处理组合为反应温度260℃,保温时间15min,固液比4∶50,此条件下烟叶生物油产率为57.68%。使用GC-MS(气相色谱-质谱联用仪)分析对水溶性油和残渣油的成分进行表征,结果显示,在最佳提取工艺条件下,从水溶性油中共分离出69种化学成分,以酚类为主,占总量的49.39%,其次为杂环类,占总量的25.69%;从残渣油中共分离出37种化学成分,以酯类、酮类为主,分别占总量的25.66%、20.21%。本方法遵循绿色提取理念,以水为溶剂,对环境友好,与传统提取方法相比,生物油产率高,致香成分丰富,为废次烟叶处理提供了新的途径。In order to explore the optimal process conditions for producing bio-oil from waste tobacco leaves treated with near-critical water,a single factor experimental design was used to investigate the effects of reaction temperature,solid-liquid ratio and holding time on the bio-oil yield of tobacco leaves.The technology conditions of near-critical water treatment of waste tobacco were optimized by orthogonal experiment.The results showed that the optimal treatment combination was 260℃,solid-liquid ratio 4∶50 and holding time 15min.Under these conditions,the yield of tobacco leaf bio-oil was 57.68%.The composition of water-soluble oil and residual oil was characterized by GC-MS analysis.The results showed that a total of 69 chemical components were isolated under the optimal extraction process conditions,mainly phenols,accounting for 49.39%of the total,followed by heterocycles,accounting for 25.69%of the total;a total of 37 chemical components were isolated from the residual oil,mainly esters and heterocycles,accounting for 25.66%and 20.21%of the total oil,respectively.This method follows the concept of green extraction,uses water as solvent,and is environmentally friendly.Compared with traditional extraction methods,this method has high yield of bio-oil and rich aroma components,which provides a new way for the treatment of waste tobacco leaves.

关 键 词：近临界水 废次烟叶 生物油 致香成分 正交试验 

分 类 号：TS49[农业科学—烟草工业] TQ021[化学工程]