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    • 7. 发明专利
    • Method for purifying propane, and purification system
    • 净化丙烷和净化系统的方法
    • JP2013129606A
    • 2013-07-04
    • JP2011278031
    • 2011-12-20
    • Sumitomo Seika Chem Co Ltd住友精化株式会社
    • KAWAKAMI JUNICHITAI SHINICHITANAKA SAORI
    • C07C7/12C07C9/08
    • C07C7/12C07C7/09C07C7/13C07C9/08
    • PROBLEM TO BE SOLVED: To provide a simple, highly energy efficient, industrially advantageous method and system for obtaining high-purity propane from low-purity propane.SOLUTION: At least one of water, carbon dioxide, ethane, and propylene and at least one of isobutane and normal butane in gas-phase low-purity propane are adsorbed with: a molecular sieve zeolite that adsorbs water and carbon dioxide with higher priority than propane; molecular sieve activated carbon that adsorbs ethane and propylene with higher priority than propane; and activated carbon that adsorbs isobutane and normal butane with higher priority than propane. By introducing the gas-phase low-purity propane into a dephlegmator, propane is condensed in a state where nitrogen and oxygen are kept in the gas phase. Nitrogen and oxygen in the gas phase are removed from the dephlegmator.
    • 要解决的问题:提供一种用于从低纯度丙烷获得高纯度丙烷的简单,高能效,工业上有利的方法和系统。溶液:水,二氧化碳,乙烷和丙烯中的至少一种和至少一种 的异丁烷和正丁烷在气相低纯度丙烷中吸附有:分子筛沸石,其吸附比丙烷优先的水和二氧化碳; 分子筛活性炭吸附乙烷和丙烯优先于丙烷; 以及比丙烷优先吸附异丁烷和正丁烷的活性炭。 通过将气相低纯度丙烷引入分凝器,丙烷在氮气和氧气保持在气相中的状态下冷凝。 从分凝器中除去气相中的氮和氧。