Separation of off gases from C3 hydrocarbons in propane dehydrogenation process
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United States of America Patent
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Sep 29, 2020
Grant Date -
Feb 14, 2019
app pub date -
Apr 13, 2017
filing date -
Apr 15, 2016
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Abstract
Methods and systems for separating C3 hydrocarbons from lighter hydrocarbons, carbon monoxide, carbon dioxide, and water are provided. In certain embodiments, the methods include feeding a gaseous mixture including C1, C2, and C3 hydrocarbons and benzene solvent to the absorber column where benzene solvent selectively absorbs C3 hydrocarbons. The methods can further include removing a first stream comprising benzene solvent and absorbed C3 hydrocarbons from the absorber column, and feeding the first stream to a stripper column where benzene solvent is separated from C3 hydrocarbons, and removing a second stream comprising C3 hydrocarbons from the stripper column.
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