Abstract In this work, binderfree zeolite 13X monoliths were tested as a new promising material for high purity ethylene production from olefin/paraffin mixtures by gas-SMB technology. To characterize the adsorbent and its potential for the target separation, the equilibrium isotherms of ethane, ethylene, and propane were measured gravimetrically, in a temperature range from 323 K to 423 K, and pressure up to 7 bar. Dynamic studies were performed at 373 K and 1.5 bar in the gas-SMB bench-scale unit. For the experiment with 0.48/0.52 ethane/ethylene (molar based) feed composition, an ethylene purity of 97.7% was obtained, with a recovery above 90% and productivity of 16.9 kg C 2 H 4 ∙ h - 1 ∙ m bed - 3 . Furthermore, the mathematical SMB model and the regions of separation were determined based on experimental data. This work experimentally demonstrated it is possible to produce high purity grade ethylene with a high recovery using binderfree zeolite 13X monoliths as adsorbent and propane as desorbent.

中文翻译：

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在无粘合剂沸石 13X 整料中通过气相 SMB 分离乙烯/乙烷

摘要 在这项工作中，测试了无粘合剂 13X 沸石整料作为一种新的有前途的材料，用于通过气体 SMB 技术从烯烃/石蜡混合物生产高纯度乙烯。为了表征吸附剂及其目标分离的潜力，在 323 K 至 423 K 的温度范围和高达 7 bar 的压力下，通过重量分析测量了乙烷、乙烯和丙烷的平衡等温线。动态研究是在 373 K 和 1.5 bar 的气体 SMB 实验室规模装置中进行的。对于 0.48/0.52 乙烷/乙烯（摩尔基）进料组成的实验，乙烯纯度为 97.7%，回收率高于 90%，生产率为 16.9 kg C 2 H 4 ∙ h - 1 ∙ m 床 - 3 . 此外，数学 SMB 模型和分离区域是根据实验数据确定的。