Comprehensive kinetic studies of acidic oil continuous esterification by cation-exchange resin in fixed bed reactors

被引：36

作者：

Cheng, Yu ^{[1
]}

Feng, Yaohui ^{[1
]}

Ren, Yanbiao ^{[1
]}

Liu, Xuan ^{[1
]}

Gao, Aoran ^{[1
]}

He, Benqiao ^{[1
]}

Yan, Feng ^{[1
]}

Li, Jianxin ^{[1
,2
]}

机构：

[1] Tianjin Polytech Univ, Sch Mat & Chem Engn, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300160, Peoples R China

[2] Chinese Acad Sci, Shanghai Adv Res Inst, Sustainable Technol Res Ctr, Lab Membrane Mat & Separat Technol, Shanghai 201203, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 113卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Kinetic model; Continuous esterification; Cation-exchange resin; Fixed bed reactor; Free fatty acid (FFA); FREE FATTY-ACIDS; BIODIESEL PRODUCTION; MASS-TRANSFER; ACETIC-ACID; SUNFLOWER OIL; OLEIC-ACID; PALM OIL; METHANOL; TRANSESTERIFICATION; CATALYSTS;

D O I：

10.1016/j.biortech.2011.12.140

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Biodiesel produced by esterification from molar ratio of methanol to free fatty acid (FFA) as 25:1 in presence of triglyceride was carried out with cation-exchange resin as a heterogeneous catalyst in three different scales of fixed bed reactors from minireactor (6.8 mm x 110 mm) to pilot scale reactor (70 mm x 1260 mm) at 338 K. The kinetic study of esterification was undertaken in terms of pseudo-homogeneous mechanism and performed as a first order reaction with elimination of the solid-liquid internal and external mass transfer resistances. Moreover, a kinetic model of FFA esterification was developed to illustrate the relationship between the FFA conversion and the catalyst bed height of fixed bed reactor. The model was also suitable for various resins in fixed bed reactor. The theoretical predictions were in agreement with the experimental data with root mean square (RMS) errors <10. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：65 / 72

页数：8

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