化工学报 ›› 2024, Vol. 75 ›› Issue (1): 47-59.DOI: 10.11949/0438-1157.20230649
郑雨婷(), 方冠东, 张梦波, 张浩淼(), 王靖岱, 阳永荣
收稿日期:
2023-06-30
修回日期:
2023-08-20
出版日期:
2024-01-25
发布日期:
2024-03-11
通讯作者:
张浩淼
作者简介:
郑雨婷(1999—),女,硕士研究生,yuting_zheng@zju.edu.cn
基金资助:
Yuting ZHENG(), Guandong FANG, Mengbo ZHANG, Haomiao ZHANG(), Jingdai WANG, Yongrong YANG
Received:
2023-06-30
Revised:
2023-08-20
Online:
2024-01-25
Published:
2024-03-11
Contact:
Haomiao ZHANG
摘要:
综述了以微尺度结构为核心的微化工精馏分离技术的研究进展。基于传统精馏存在的节能技术落后、设备效能低以及难分离近沸点物系等问题,介绍了易于实现过程强化的微精馏分离技术,包括常规微蒸馏/微精馏、毛细管力微精馏、离心力微精馏、真空微精馏、重力微精馏等多种方法,在流动化学应用中将起到重要作用。在微尺度条件下,相间传质传热效率随传质距离的缩短显著增强,同时精馏分离流程具有安全可控、连续高效的特点。微尺度精馏分离技术具有独特优势,为化工精馏实现环保、降耗的目标提供了解决方案,也为流动化学合成系统的开发与完善提供了可能。
中图分类号:
郑雨婷, 方冠东, 张梦波, 张浩淼, 王靖岱, 阳永荣. 微化工精馏分离技术研究进展[J]. 化工学报, 2024, 75(1): 47-59.
Yuting ZHENG, Guandong FANG, Mengbo ZHANG, Haomiao ZHANG, Jingdai WANG, Yongrong YANG. Research progress on micro-chemical rectification and separation technology[J]. CIESC Journal, 2024, 75(1): 47-59.
图2 微通道蒸馏研究实验装置图[41]1—注射泵;2—氮气瓶;3—热水浴;4—PID控制器;5—微蒸馏模块;6—蒸馏产品;7—温度控制器及指示灯;8—底部产品;9—热电偶;10—表面加热器;11—止回阀;12—压力传感器及指示器;13—冷水机线路进/出口;14—质量流量控制器
Fig.2 Schematic diagram of the micro-channel distillation unit[41]1—syringe pump; 2—nitrogen gas cylinder; 3—hot water bath; 4—PID controller; 5—micro-distillation module; 6—distillate product; 7—temperature controller & indicator; 8—bottoms product; 9—thermocouples; 10—surface heaters; 11—NRV; 12—pressure transducer & indicator; 13—chiller line I/O; 14—mass flow controller
精馏方法 | 总硫含量/(mg/kg) | 重硫含量/ (mg/kg) |
---|---|---|
微通道精馏 | 328.7±3 | 16.6±0.5 |
间歇精馏 | 331.9±3 | 17.3±0.5 |
表1 不同精馏方法所得馏分的硫含量[49]
Table 1 Sulfur content of fractions obtained by different distillation methods[49]
精馏方法 | 总硫含量/(mg/kg) | 重硫含量/ (mg/kg) |
---|---|---|
微通道精馏 | 328.7±3 | 16.6±0.5 |
间歇精馏 | 331.9±3 | 17.3±0.5 |
微精馏类型 | 微通道尺度 | 分离效率 | 分离体系 | 文献 |
---|---|---|---|---|
毛细管力 | Φ10.5 mm | 5~7 cm HETP | 甲醇/水 乙醇/水 | [ |
140 μm×10 μm | — | JP-8燃料脱硫 | [ | |
30 μm×5 mm | 5 cm HETP | 甲酸甲酯/甲醇 | [ | |
350 μm×300 μm | 4 TP | 甲醇/甲苯 | [ | |
350 μm×300 μm | 2.7 TP | 苯甲醛/甲苯 | [ | |
100 μm×10 μm | — | 乙醇/水 | [ | |
Φ30 mm | — | 乙酸乙酯/乙醇 | [ | |
500 μm×1000 μm | 1.56 cm HETP | 10B/11B | [ | |
重力 | 35 μm×5 mm | 1.08 cm HETP | 甲苯/正辛烷 | [ |
Φ25/50 mm | 2.7 cm HETP | 氨气、硅烷纯化 | [ | |
Φ7 mm | 8.8 cm HETP | 正己烷/环己烷 | [ | |
Φ50 mm | 5~8 cm HETP | 甲醇/乙醇 正庚烷/甲基环己烷 | [ | |
扫气膜 | Φ677 μm | 分离系数≈5 | 甲醇/水 | [ |
真空膜 | 1000 μm×72 μm | 1.8 TP | 甲醇/水 | [ |
载气膜 | 400 μm×400 μm | — | 甲醇/甲苯 二氯甲烷/甲苯 | [ |
离心力 | 250 μm×95 μm | 6.6 TP | 2,2-二甲基丁烷/2-甲基-2-丁烯 | [ |
表2 微蒸馏/微精馏方法总结与比较
Table 2 Summary and comparison of micro-distillation/micro-rectification methods
微精馏类型 | 微通道尺度 | 分离效率 | 分离体系 | 文献 |
---|---|---|---|---|
毛细管力 | Φ10.5 mm | 5~7 cm HETP | 甲醇/水 乙醇/水 | [ |
140 μm×10 μm | — | JP-8燃料脱硫 | [ | |
30 μm×5 mm | 5 cm HETP | 甲酸甲酯/甲醇 | [ | |
350 μm×300 μm | 4 TP | 甲醇/甲苯 | [ | |
350 μm×300 μm | 2.7 TP | 苯甲醛/甲苯 | [ | |
100 μm×10 μm | — | 乙醇/水 | [ | |
Φ30 mm | — | 乙酸乙酯/乙醇 | [ | |
500 μm×1000 μm | 1.56 cm HETP | 10B/11B | [ | |
重力 | 35 μm×5 mm | 1.08 cm HETP | 甲苯/正辛烷 | [ |
Φ25/50 mm | 2.7 cm HETP | 氨气、硅烷纯化 | [ | |
Φ7 mm | 8.8 cm HETP | 正己烷/环己烷 | [ | |
Φ50 mm | 5~8 cm HETP | 甲醇/乙醇 正庚烷/甲基环己烷 | [ | |
扫气膜 | Φ677 μm | 分离系数≈5 | 甲醇/水 | [ |
真空膜 | 1000 μm×72 μm | 1.8 TP | 甲醇/水 | [ |
载气膜 | 400 μm×400 μm | — | 甲醇/甲苯 二氯甲烷/甲苯 | [ |
离心力 | 250 μm×95 μm | 6.6 TP | 2,2-二甲基丁烷/2-甲基-2-丁烯 | [ |
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