Regeneration of adsorbents by low temperature hydrogen...

Details Regeneration of adsorbents by low temperature hydrogen... Regeneration of adsorbents by low temperature hydrogen...

B - Operations, Transporting

01

J

252/1.D

B01J 20/34 (2006.01) C10G 25/12 (2006.01)

Patent

CA 1188668

"REGENERATION OF ADSORBENTS BY LOW TEMPERATURE HYDROGEN STRIPPING" 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 C4 hydrocarbons. The regeneration method includes stripping the adsorbent with a low temperature hydrogen-rich gas stream, which preferably has a temperature below about 200°F (93°C), and then gradually increasing the temperature of the gas stream to customary regeneration temperatures.

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