不同的共沸劑對蒸餾塔性能的影響

Tower Performance Impacts with Different Azeotropic Agents

尤明隆(Ming-Lung Yu) ； 魏秋男(Chiu-Nan Wei)

《石油季刊》 37卷1期 (2001/03) Pp. 11-16

https://doi.org/10.30128/JP.200103.0002

摘要

This simulation study is to evaluate the dehydrated tower performance impacts of a PTA plant with different azeotropic agents. To have better simulation results, the vapor-liquid equilibrium constants among water, acetic acid and azeotropic agent are calibrated with intermolecular interaction and laboratory data. The simulation model has initially been validated with plant design data and then with plant operation data before conducting the evaluation study with different azeotropic agents. The study found that this tower could save a significant energy if a new azeotropic agent is replaced with the current one. It also shows that the savings become more significant when the concentration of acetic acid in the water phase of overhead withdrawn flow is less than 2000 ppm. After a new azeotropic agent is placed to work, the plant operation data show that the tower performance impacts are very close to the predicted results by simulation.

關鍵字

脫水塔 ； 模擬 ； 共沸劑 ； 製程改善

並列摘要

This simulation study is to evaluate the dehydrated tower performance impacts of a PTA plant with different azeotropic agents. To have better simulation results, the vapor-liquid equilibrium constants among water, acetic acid and azeotropic agent are calibrated with intermolecular interaction and laboratory data. The simulation model has initially been validated with plant design data and then with plant operation data before conducting the evaluation study with different azeotropic agents. The study found that this tower could save a significant energy if a new azeotropic agent is replaced with the current one. It also shows that the savings become more significant when the concentration of acetic acid in the water phase of overhead withdrawn flow is less than 2000 ppm. After a new azeotropic agent is placed to work, the plant operation data show that the tower performance impacts are very close to the predicted results by simulation.

並列關鍵字

Dehydrated tower ； Simulation ； Azeotropic agent ； Process improvement