Separation of hydrocarbons with activated carbon

Abstract

Abstract HYDROCARBON MIXTURES, SUCH AS LIGHT CYCLE OILS FROM A CATALYTIC CRACKING UNIT, PARAFFINIC LUBRICATING OILS AND THE LIKE, ARE SELECTIVELY SEPARATED BY A CYCLIC ADSORPTION TECHNIQUE INVOLVING PASSING THE HYDROCARBON MIXTURE THROUGH A FIXED BED OF ACTIVATED CARBON TO ADSORB SELECTIVELY MORE READILY ADSORBED COMPONENTS OR AN ADSORBATE PHASE WHILE COLLECTING LESS READILY ADSORBED COMPONENTS OR A RAFFINATE PHASE; PASSING A FIRST PORTION OF A PREDETERMINED VOLUME OF CARBON DISULFIDE THROUGH THE CARBON TO DISPLACE THE ADSORBATE PHASE WHILE COLLECTING A PORTION OF THE RAFFINATE PHASE AS A RECYCLE STREAM; PASSING THE REMAINDER OF THE CARBON DISULFIDE THROUGH THE CARBON WHILE COLLECTING AN ADSORBATE PHASE; PASSING A FIRST PORTION OF THE COLLECTED RECYCLE MATERIAL THROUGH THE CARBON WHILE COLLECTING AN ADSORBATE PHASE; PASSING THE REMAINDER OF THE COLLECTED RECYCLE MATERIAL THROUGH THE CARBON WHILE COLLECTING A RAFFINATE PHASE; AND SEPARATING CARBON DISULFIDE FROM THE RAFFINATE AND ADSORBATE PHASE FOR REUSE AS A DISPLACING FLUID.

Inventors

• 👤 Lawrence J E Hofer
• 👤 David B Carpenter
• 👤 Edward A Thompson

Bibliographic Details