玉米秸秆发酵残渣在多羟基醇中液化反应的研究

doi:10.3969/j.issn.0253-2417.2014.05.009

林产化学与工业 ›› 2014, Vol. 34 ›› Issue (5): 53-59.doi: 10.3969/j.issn.0253-2417.2014.05.009

玉米秸秆发酵残渣在多羟基醇中液化反应的研究

韦冰¹, 谌凡更^1,2, 李志豪¹, 程远超²

1. 华南理工大学制浆造纸工程国家重点实验室, 广东广州 510640;
2. 河南天冠企业集团有限公司车用生物燃料技术国家重点实验室, 河南南阳 473000

收稿日期:2013-09-16 出版日期:2014-10-25 发布日期:2015-08-18
作者简介:韦冰（1988－），女，广西南宁人，硕士生，主要研究生物质资源转化利用
基金资助:
车用生物燃料技术国家重点实验室资助课题（2013002）；国家级大学生创新创业训练计划项目资助课题（1056112053）

Liquefaction of Fermentation Residue of Corn Stover in Polyhydric Alcohols

WEI Bing¹, CHEN Fan-geng^1,2, LI Zhi-hao¹, CHENG Yuan-chao²

1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China;
2. State Key Laboratory of Automotive Biofuel Technology, Tianguan Group Co., Ltd., Nanyang 473000, China

Received:2013-09-16 Online:2014-10-25 Published:2015-08-18
Contact: 谌凡更，研究员，博士，博士生导师，研究领域为植物资源化学与生物质转化；E-mail：fgchen@scut.edu.cn E-mail:fgchen@scut.edu.cn

摘要/Abstract

摘要： 以玉米秸秆制备燃料乙醇所得到的发酵残渣（简称“发酵残渣”）为原料，在聚乙二醇等多羟基醇中，以浓硫酸为催化剂，进行液化反应，得到植物纤维基多元醇，并以该种液化产物代替部分聚醚多元醇，用于聚氨酯硬泡的制备。通过对液化产物及残渣进行分析，研究了影响液化反应的因素。结果表明：发酵残渣在液化剂PEG200/甘油（质量比7：3）中，当液化温度为 160 ℃，时间为 2 h，液固质量比4：1，催化剂浓硫酸用量为液化剂质量的 4 % 时液化效果最佳，液化率达 64.54 %。此时，液化产物羟值为 349 mg/g，黏度为 979 mPa·s。发酵残渣苯醇抽提物在上述液化条件下液化率可达 96.59 %，其液化产物的羟值及黏度分别为 474 mg/g 和 791 mPa·s，也可用于聚氨酯硬泡的制备。

关键词: 玉米秸秆, 发酵残渣, 液化, 聚氨酯硬泡

Abstract: Fermentation residue of corn stover was liquefied in polyhydric alcohols in the presence of sulfuric acid as the catalyst at the temperature from 140 to 180 ℃. The liquefied product was used as polyol component for the preparation of rigid polyurethane foam. The results indicated that the highest yield of liquefaction was 64.54%, which was achieved in the mixed solvents of polyethylene 200 and glycol(mass ratio 7:3)with a liquid/solid mass ratio of 4:1, and a mass fraction of sulfuric acid 4 % at 160 ℃ after 2 h. The hydroxyl number and the viscosity of the liquefied product were 349 mg/g and 979 mPa·s, respectively. The benzene/ethanol extractives from fermentation residue was 96.59 % using the optimum reaction conditions. The liquefied product of the extractives, which has a hydroxyl number of 474 mg/g and a viscosity of 791 mPa·s, could be used for the preparation of rigid PU foam, too.

Key words: corn stover, fermentation residue, liquefaction, rigid polyurethane foam

中图分类号:

TQ35

韦冰, 谌凡更, 李志豪, 程远超. 玉米秸秆发酵残渣在多羟基醇中液化反应的研究[J]. 林产化学与工业, 2014, 34(5): 53-59.

WEI Bing, CHEN Fan-geng, LI Zhi-hao, CHENG Yuan-chao. Liquefaction of Fermentation Residue of Corn Stover in Polyhydric Alcohols[J]. Chemistry and Industry of Forest Products, 2014, 34(5): 53-59.

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玉米秸秆发酵残渣在多羟基醇中液化反应的研究

Liquefaction of Fermentation Residue of Corn Stover in Polyhydric Alcohols

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