麻花式插件微通道中游离脂肪酸预酯化

doi:10.16085/j.issn.1000-6613.2023-0129

化工进展 ›› 2023, Vol. 42 ›› Issue (12): 6191-6196.DOI: 10.16085/j.issn.1000-6613.2023-0129

• 化工过程与装备 • 上一篇

麻花式插件微通道中游离脂肪酸预酯化

马跃¹(), 王钦艳², 金央²()

^1.云南天安化工有限公司，云南昆明 650309
^2.四川大学化学工程学院，教育部磷资源综合利用与清洁加工工程研究中心，四川成都 610065

收稿日期:2023-02-02 修回日期:2023-05-04 出版日期:2023-12-25 发布日期:2024-01-08
通讯作者: 金央
作者简介:马跃（1979—），男，硕士研究生，高级工程师，研究方向为磷化工。E-mail：my_2004@126.com。
基金资助:
国家重点研发计划(2022YFC2904703);国家自然科学基金(21776180);四川省科技计划重点研发项目(21ZDYF4086)

Esterification of free fatty acids in a twist plug-in microchannel

MA Yue¹(), WANG Qinyan², JIN Yang²()

^1.Yunnan Tian’an Chemical Industry Co. , Ltd. , Kunming 650309, Yunnan, China
^2.Engineering Research Center for Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China

Received:2023-02-02 Revised:2023-05-04 Online:2023-12-25 Published:2024-01-08
Contact: JIN Yang

摘要/Abstract

摘要：

微化工技术正成为强化流动化学过程的重要途径。本文针对游离脂肪酸的预酯化过程存在转化效率低、设备体积庞大及能耗高等局限，提出一种麻花式插件微通道，旨在解决常规酯化反应器存在的上述问题。以甲醇和油酸为实验体系，考察物料流量、反应温度和通道长度等参数对预酯化反应的影响规律，并和其他酯化反应器进行对比。结果表明，40℃下麻花式插件微通道内仅需3.26s就能实现高达94.3%的酯化转化率。增大微通道中物料流量，酯化转化率先降低然后增加，脂肪酸甲酯收率逐渐增加。催化剂用量和醇酸摩尔比的增加均可促进预酯化反应。升高反应温度和增加微通道长度有利于促进酯化转化率和脂肪酸甲酯收率的提高。此外，分别建立了酯化转化率和脂肪酸甲酯收率的关联方程，计算值与实验值吻合良好，误差均在15%以内。

关键词: 微通道, 麻花式插件, 游离脂肪酸, 预酯化

Abstract:

Microchemical technology is becoming an important method to strengthen the flow chemistry. In view of the limitations of the preesterification process of free fatty acids, such as low mass transfer efficiency, bulk volume, and high energy consumption. A twist plug-in microchannel was proposed to solve the above mentioned problems in the conventional esterification reactor. Methanol and oleic acid were employed as experimental systems to investigate the influence of parameters such as flow rate, reaction temperature and channel length on the preesterification reaction, and compared with other esterification reactors. The results showed that the conversion rate in the twist plug-in microchannel could reach 94.3% with only 3.26s at 40℃. With the increase of flow rate in the twist plug-in microchannel, the conversion first decreased and then increased, and the yield of fatty acid methyl ester gradually increased. The increase of catalyst dosage and alkyd molar ratio could promote the preesterification reaction. Increasing the reaction temperature and increasing the length of the twist plug-in microchannel could promote the conversion rate and the yield of fatty acid methyl ester. The correlation equations of reaction conversion rate and yield of fatty acid methyl ester were established, respectively. The calculated data were in good agreement with the experimental values with the relative error within 15%.

Key words: microchannel, twist plug-in, free fatty acids, esterification

中图分类号:

TQ64

马跃, 王钦艳, 金央. 麻花式插件微通道中游离脂肪酸预酯化[J]. 化工进展, 2023, 42(12): 6191-6196.

MA Yue, WANG Qinyan, JIN Yang. Esterification of free fatty acids in a twist plug-in microchannel[J]. Chemical Industry and Engineering Progress, 2023, 42(12): 6191-6196.

图/表 9

图1 麻花式插件微通道内游离脂肪酸预酯化反应实验装置图

图2 物料流量对预酯化反应的影响（d=0.9mm，dins=0.2mm，L=150mm，Wcat=10%，nM/nFFA=25，T=40℃）

图3 催化剂用量对预酯化反应的影响（d=0.9mm，dins=0.2mm，L=150mm，nM/nFFA=25，QFFA=1mL/min，T=40℃）

图4 甲醇和油酸摩尔比对预酯化反应的影响（d=0.9mm，dins=0.2mm，L=150mm，QFFA=1mL/min，Wcat=10%，T=40℃）

图5 反应温度对预酯化反应的影响（d=0.9mm，dins=0.2mm，L=150mm，QFFA=1mL/min，Wcat=10%，nM/nFFA=25）

图6 通道长度对预酯化反应的影响（d=0.9mm，dins=0.2mm，QFFA=1mL/min，Wcat=10%，nM/nFFA=25，T=40℃）

图7 酯化转化率的实验数据和计算数据对比

图8 脂肪酸甲酯收率的实验数据和计算数据对比

表1 不同反应器中游离脂肪酸酯化研究

反应器	体系	T/℃	反应时间	转化效率/%	参考文献
鼓泡反应器	油酸&乙醇	150	40min	95	[18]
超声空化夹套反应器	油酸&甲醇	60	60min	89	[16]
超声水浴反应器	棕榈油&甲醇	60	85min	98	[4]
微波反应器	牛脂&甲醇	73	60min	88	[15]
微反应器	油酸&甲醇	75	2.5min	92	[17]
插入式微反应器	油酸&甲醇	40	3.26s	94.3	本工作

参考文献 18

1	XU Leilei, WANG Yuanhong, YANG Xia, et al. Preparation of mesoporous polyoxometalate-tantalum pentoxide composite catalyst and its application for biodiesel production by esterification and transesterification[J]. Green Chemistry, 2008, 10(7): 746-755.
2	HU Xueling, WEI Tengyou, LIAO Anping, et al. Use of acid cation-exchange resin for catalytic conversion of soybean acid oil to biodiesel[J]. Journal of Material Cycles and Waste Management, 2016, 18(1): 123-131.
3	THOAI Dang Nguyen, TONGURAI Chakrit, PRASERTSIT Kulchanat, et al. A novel two-step transesterification process catalyzed by homogeneous base catalyst in the first step and heterogeneous acid catalyst in the second step[J]. Fuel Processing Technology, 2017, 168: 97-104.
4	SEITHTANABUTARA Varinrumpai, SUNGNAT Chatuphong, WONGWUTTANASATIAN Tanakorn. Comparison of free fatty acid conversion yields for esterification assisted by single- and dual-frequency sonication[J]. Biomass Conversion and Biorefinery, 2021, 11(6): 1-13.
5	WANG Yubin, TAO Xiaoqiu, LI Jun, et al. Esterification of free fatty acids in a rotor-stator spinning disc reactor[J]. Korean Journal of Chemical Engineering, 2021, 38(8): 1727-1732.
6	BOFFITO D C, GALLI F, PIROLA C, et al. Ultrasonic free fatty acids esterification in tobacco and canola oil[J]. Ultrasonics Sonochemistry, 2014, 21(6): 1969-1975.
7	TRINH Huong, YUSUP Suzana, UEMURA Yoshimitsu. Optimization and kinetic study of ultrasonic assisted esterification process from rubber seed oil[J]. Bioresource Technology, 2018, 247: 51-57.
8	LIU Wei, YIN Ping, LIU Xiguang, et al. Microwave assisted esterification of free fatty acid over a heterogeneous catalyst for biodiesel production[J]. Energy Conversion and Management, 2013, 76: 1009-1014.
9	CHEN Yihung, WANG Liangchi, TSAI Cheng-Hsien, et al. Continuous-flow esterification of free fatty acids in a rotating packed bed[J]. Industrial & Engineering Chemistry Research, 2010, 49(9): 4117-4122.
10	盛林, 昌宇, 邓建, 等. 阶梯式T型微通道内有序气泡群的形成和流动特性研究[J]. 化工学报, 2023, 74(1): 416-427.
	SHENG Lin, CHANG Yu, DENG Jian, et al. Formation and flow characteristics of ordered bubble swarm in a step T-junction microchannel[J]. CIESC Journal, 2023, 74(1): 416-427.
11	许非石, 杨丽霞, 陈光文. 超声微反应器内气液传质过程的介尺度强化机制[J]. 化工学报, 2022, 73(6): 2552-2562.
	XU Feishi, YANG Lixia, CHEN Guangwen. Mesoscale enhancement mechanism of gas-liquid mass transfer in ultrasonic microreactor[J]. CIESC Journal, 2022, 73(6): 2552-2562.
12	王忠东, 朱春英, 马友光, 等. 并行微通道内液液两相流及介尺度效应[J]. 化工学报, 2022, 73(6): 2563-2572.
	WANG Zhongdong, ZHU Chunying, MA Youguang, et al. Liquid-liquid two-phase flow and mesoscale effect in parallel microchannels[J]. CIESC Journal, 2022, 73(6): 2563-2572.
13	RATHOD Ajit P, WASEWAR Kailas L, YOO Chang Kyoo. Enhancement of esterification of propionic acid with isopropyl alcohol by pervaporation reactor[J]. Journal of Chemistry, 2014, 2014: 1-4.
14	HAWASH Samah A, EBRAHIEM Ebrahiem Esmail, FARAG Hassan A. Kinetic study of the esterification of unsaturated free fatty acids[J]. Proceedings of the Institution of Civil Engineers-Energy, 2019, 172(3): 105-114.
15	IDOWU Ibijoke, PEDROLA Montserrat Ortoneda, WYLIE Steve, et al. Improving biodiesel yield of animal waste fats by combination of a pre-treatment technique and microwave technology[J]. Renewable Energy, 2019, 142: 535-542.
16	MASRI A N, ABDUL MUTALIB M I, AMINUDDIN N F, et al. Novel SO₃H-functionalized dicationic ionic liquids—A comparative study for esterification reaction by ultrasound cavitation and mechanical stirring for biodiesel production[J]. Separation and Purification Technology, 2018, 196: 106-114.
17	MAZUBERT Alex, AUBIN Joelle, ELGUE Sébastien, et al. Intensification of waste cooking oil transformation by transesterification and esterification reactions in oscillatory baffled and microstructured reactors for biodiesel production[J]. Green Processing and Synthesis, 2014, 3(6): 419-429.
18	SILVA M G, OLIVEIRA G S, CARVALHO J C R, et al. Esterification of oleic acid in a semi-batch bubble reactor for biodiesel production[J]. Brazilian Journal of Chemical Engineering, 2019, 36(1): 299-308.

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麻花式插件微通道中游离脂肪酸预酯化

Esterification of free fatty acids in a twist plug-in microchannel

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