Taylor-vortex membrane reactor for continuous gas-liquid reactions
Taylor-vortex membrane reactor for continuous gas-liquid reactions
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用于连续气液反应的泰勒涡流膜反应器
DOI：
10.1002/aic.17880
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发表时间：
2022
期刊：
影响因子：
3.7
通讯作者：
Venezia B
中科院分区：
文献类型：
--
作者：
Venezia B
这项工作提出了一种用于连续气液反应的独特泰勒涡流膜反应器（TVMR）设计。该反应器由固定同心圆柱形容器内的圆柱形转子和围绕转子的等距挡板环的柔性系统组成。这将环形横截面限制为挡板和转子之间的小间隙，并将环形空间分为 18 个混合区域。挡板支撑着围绕转子编织的 6 m 长 PFA 管状膜。在入口流速为 4 mL/min 时，TVMR 表现出活塞流行为，其性能优于无挡板反应器，轴向扩散低 5-12 倍。使用 Pd(OAc)2/吡啶催化剂在甲苯中在 100 °C 和 1.1 MPa 氧气压力下对苯甲醇进行连续有氧氧化 7 小时。苯甲醛选择性为 85%，稳定转化率为 30%，并且有机物没有渗透蒸发到气相中。
A unique Taylor‐vortex membrane reactor (TVMR) design for continuous gas‐liquid reactions is presented in this work. The reactor consists of a cylindrical rotor inside a stationary concentric cylindrical vessel, and a flexible system of equispaced baffle rings surrounding the rotor. This restricts the annular cross section to a small gap between the baffles and the rotor, and divides the annulus into 18 mixing zones. The baffles support a 6 m long PFA tubular membrane that is woven around the rotor. At 4 mL/min inlet flow rate, the TVMR showed a plug‐flow behavior and outperformed the unbaffled reactor, having 5–12 times lower axial dispersion. The continuous aerobic oxidation of benzyl alcohol was performed for 7 h using the Pd(OAc)2/pyridine catalyst in toluene at 100 °C and 1.1 MPa oxygen pressure. A stable conversion of 30% was achieved with 85% benzaldehyde selectivity, and no pervaporation of organics into the gas phase.