- 流加对前体物发酵法合成15N L-色氨酸的影响
- Separation of isotope 13C using high-performance structured packing
- Biosynthesis of glucose-D-13C6 from Hansenula polymorpha and methanol-13C
- Computational Fluid Dynamics Simulation of 13CO Distillation in Structured Packing
- RESEARCH ON THE MASS PRODUCTION OF 13C
Computational Fluid Dynamics Simulation of 13CO Distillation in Structured Packing
Computational Fluid Dynamics Simulation of 13CODistillation in Structured Packing
Hu-Lin Li1,2，Yong-Lin Ju1，Liang-Jun Li2，Da-Gang Xu2
1 Shanghai Jiao Tong University, Institute ofRefrigeration and Cryogenics, Shanghai,
2 Shanghai Research Institute of Chemical Industry,Shanghai, China.
Physical 3Dmodels were established for corrugated packing used in the enrichment of theisotope 13C. Computational fluid dynamics (CFD) simulation results indicatedthat common corrugated packing was not well wetted when used for isotopedistillation. It is concluded that liquid misdistribution in the packed towerresults from the structure of the packing rather than from the height of the packingbeds. The existence of entrainment was also demonstrated by CFD simulation. Itis proved that mass transfer equations based on the Nusselt theory are notsuitable for distillation calculation in such a corrugated packing system. By comparison,the recently developed structured packing model with a corrugation geometrybased on the right-angled triangle, known as Zigzag-pak, describes vapor-liquiddistribution properties well and has significant advantages over commoncorrugated packing due to its better liquid distribution character.
Keywords: Corrugatedpacking, Cryogenic distillation, Isotope 13C, Transferintensification, Zigzag-pak