Process for producing spherical activated carbon
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosure is made of a specific process for producing activated carbon in spherical form, starting with organic polymer spherules based on styrene and divinylbenzene, wherein said polymer spherules contain chemical groups leading to the formation of free radicals and thus to cross-linkages by their thermal decomposition, in particular sulfonic acid groups. Furthermore, various application purposes for the thus-produced activated carbon spherules are named.
-
Citations
16 Claims
-
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.
Specification