Regeneration of adsorbents by low temperature hydrogen stripping

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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55 75, 210672, 210690, 208245, 208305, 208310R, 208310Z, 585826, 252411S, B01J 2034, C10G 2512, C07C 713, C07C 712

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044041187

ABSTRACT:
A method is disclosed for regenerating a solid adsorbent which has been used to remove oxygen-containing hydrocarbonaceous compounds, water or sulfur-containing compounds from a hydrocarbon stream. The method is preferably applied to molecular sieves which have been used to remove ethers, alcohols and/or water from a light liquid phase hydrocarbon stream such as a stream which is rich in C.sub.4 hydrocarbons. The regeneration method includes stripping the adsorbent with a low temperature hydrogen-rich gas stream, which preferably has a temperature below about 200.degree. F., and then gradually increasing the temperature of the gas stream to customary regeneration temperatures.

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