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Process for producing spherical activated carbon

  • US 20040038802A1
  • Filed: 09/17/2002
  • Published: 02/26/2004
  • Est. Priority Date: 04/28/2000
  • Status: Abandoned Application
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1. Process for producing spherical activated carbon (activated carbon spherules) by carbonization (pyrolysis, smoldering) and activation of polymer spherules based on styrene and divinylbenzene, wherein said polymer spherules comprise chemical groups, particularly sulfonic acid groups, said chemical groups leading to the formation of free radicals and thus to cross-linkages by their thermal decomposition, characterized in that said polymer spherules are first subjected to a continuous pre-carbonization step and are then discontinuously treated in re-carbonization and activation step.

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