| 摘要 |
<p>1,263,150. Regenerating adsorbents used in the dewaxing of oils. SUN OIL CO. 9 April, 1969 [9 April, 1968; 23 Dec., 1968], No. 18073/69. Heading C5E. A process for regenerating bauxite or attapulgus clay which has been used in the dewaxing of oils has a first regeneration stage of heating in a controlled low oxygen atmosphere to reduce the adsorbate and volatile content to below 10 per cent without deactivation of the catalyst, transferring to a second zone of oxygen rich atmosphere to burn all volatilizable matter etc. but at a temperature not high enough to deactivate the adsorbent.</p> |
