Process for producing spherical activated carbon

摘要

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.

主权项

1. A process for producing an activated carbon spherule comprising:
continuously pre-carbonizing a starting material which comprises a polymer spherule wherein said polymer spherule is based on styrene and divinylbenzene and comprises chemical groups which form free radicals and cross linkages by thermal decomposition, the continuous pre-carbonization being performed in a rotary apparatus working continuously at a temperature of from 100° C. to 850° C. to form a pre-carbonized polymer spherule; and subsequently discontinuously treating said pre-carbonized polymer spherule in a re-carbonization and activation step to produce the activated carbon spherule, the re-carbonization and activation being performed in a second rotary apparatus operating at a temperature of from 850° C. to 950° C.