脱树脂褐煤蜡的氧化漂白新工艺

doi:10.3969/j.issn.0253-2417.2015.04.016

林产化学与工业 ›› 2015, Vol. 35 ›› Issue (4): 97-104.doi: 10.3969/j.issn.0253-2417.2015.04.016

脱树脂褐煤蜡的氧化漂白新工艺

袁承¹, 张惠芬², 张敉¹, 韦曦¹, 李宝才¹

1. 昆明理工大学生命科学与技术学院, 云南昆明 650500;
2. 昆明理工大学云南省食品安全研究院, 云南昆明 650500

收稿日期:2014-05-06 出版日期:2015-08-25 发布日期:2015-08-29
通讯作者: 李宝才,教授,硕士生导师,主要从事年青褐煤的综合利用研究;E-mail:baocaili@hotmail.com。 E-mail:baocaili@hotmail.com
作者简介:袁承(1988—),男,湖南绥宁人,硕士,主要从事褐煤蜡氧化精制及其应用研究
基金资助:
云南省科技计划项目(2013IB022);国家自然科学基金资助项目(21166013)

New Oxidation Bleaching Technology of Deresinated Montan Wax

YUAN Cheng¹, ZHANG Hui-fen², ZHANG Mi¹, WEI Xi¹, LI Bao-cai¹

1. Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China;
2. Food Security Research Institute of Yunnan Province, Kunming University of Science and Technology, Kunming 650500, China

Received:2014-05-06 Online:2015-08-25 Published:2015-08-29

摘要/Abstract

摘要： 以云南峨山脱树脂褐煤蜡(ESDMW)为研究对象,以色度(L)值为主要考察指标,研究脱树脂褐煤蜡的氧化漂白新工艺。考察了在H₂O₂、CH₃COOOH以及H₂O₂与CH₃COOOH组合3种氧化体系下的漂白效果,结果显示H₂O₂与CH₃COOOH组合体系优于H₂O₂和CH₃COOOH的单独体系,且CH₃COOOH/H₂O₂组合的效果较好。对CH₃COOOH/H₂O₂组合时的工艺参数进行了响应面优化,得到最佳条件为:m(CH₃COOOH):m(ESDMW)20:1、 m(H₂O₂):m(ESDMW)36.7:1、时间80 min、温度118.5 ℃,该条件下产物的L值为62.02,与模型预测值63.03基本相符。同时进行了CH₃COOOH/H₂O₂组合体系与Cr⁶⁺体系的联合漂白,结果表明Cr⁶⁺+CH₃COOOH/H₂O₂联合方式的漂白效果最好,优化后的联合方式,在保证较佳漂白效果的前提下有效减少了Cr⁶⁺氧化剂的用量。

关键词: 脱树脂褐煤蜡, 过氧乙酸, 过氧化氢, 氧化漂白

Abstract: Using deresinated montan wax(DMW) of E'shan(ESDMW) from Yunnan province as the material, chroma value (L) as the main index, new oxidation bleaching of DMW were developed. The bleaching effects of three kinds of oxidation systems, i.e., peroxide (H₂O₂), peracetic acid (CH₃COOOH) and H₂O₂/CH₃COOOH system, were investigated. The results showed that H₂O₂/CH₃COOOH system was better than the single systems of H₂O₂ and CH₃COOOH. The main process parameters in H₂O₂/CH₃COOOH system was optimized using the response surface method. The optimal conditions were m(CH₃COOOH):m(ESDMW) 20:1, m(H₂O₂):m(ESDMW) 36.7:1, time 80 min and temperature 118.5 ℃. Under these conditions, the L value of the product was 62.02, which was almost consistent with the model prediction. The joint use of H₂O₂/CH₃COOOH system with the Cr⁶⁺ was explored. The results showed that the bleaching effect of the joint use of Cr⁶⁺+CH₃COOOH/H₂O₂ was better than any other methods used before. More importantly, under the premise of better bleaching effect, the dosage of Cr⁶⁺ was significantly reduced by the optimized process.

Key words: deresinated montan wax, peroxide, peracetic acid, oxidation bleaching

中图分类号:

TQ35
TQ536

袁承, 张惠芬, 张敉, 韦曦, 李宝才. 脱树脂褐煤蜡的氧化漂白新工艺[J]. 林产化学与工业, 2015, 35(4): 97-104.

YUAN Cheng, ZHANG Hui-fen, ZHANG Mi, WEI Xi, LI Bao-cai. New Oxidation Bleaching Technology of Deresinated Montan Wax[J]. Chemistry and Industry of Forest Products, 2015, 35(4): 97-104.

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脱树脂褐煤蜡的氧化漂白新工艺

New Oxidation Bleaching Technology of Deresinated Montan Wax

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