초록 ▼

A process is provided for the concentration and recovery of propylene from propane using an adsorbent comprising AlPO-14 at adsorption temperatures less than 120.degree. C. and an adsorption pressure comprising a propylene partial pressure between about 0.5 bar and about 4 bar. The AlPO-14 adsorbent

A process is provided for the concentration and recovery of propylene from propane using an adsorbent comprising AlPO-14 at adsorption temperatures less than 120.degree. C. and an adsorption pressure comprising a propylene partial pressure between about 0.5 bar and about 4 bar. The AlPO-14 adsorbent can be employed as a selective adsorbent for the separation of propylene from mixtures thereof with propane in vacuum swing adsorption processes, thermal swing adsorption processes, and combinations thereof. A simulated moving bed process using vacuum swing adsorption is used to remove propylene from a C.sub.3 hydrocarbon stream comprising propylene and propane and recover a high purity propylene product at a high recovery rate. The simulated moving bed vacuum swing adsorption process of the present invention can be employed in a variety of petroleum refining and petrochemical processes to purify and separate propylene from mixtures of propylene and propane alone or in combination with fractionation.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for adsorptive separation of propylene from a feedstream comprising propylene and propane, said process comprising:a) passing the feedstreani at an effective sorption temperature less than 120.degree. C. and a sorption pressure to a sorption zone wherein said

[ What is claimed is:] [1.]1. A process for adsorptive separation of propylene from a feedstream comprising propylene and propane, said process comprising:a) passing the feedstreani at an effective sorption temperature less than 120.degree. C. and a sorption pressure to a sorption zone wherein said sorption zone comprises AlPO-14, to adsorb at least a portion of the propylene and withdrawing an unadsorbed stream comprising propane; andb) desorbing at least a portion of the propylene from the sorption zone and withdrawing a desorbed stream.