Patent ID: 9643122
Date: 2017-05-09
CPC Classifications: B01D,Y02C

Claim:
1. A device for separating off carbon dioxide, comprising: an absorption unit, a desorption unit assigned to the absorption unit, and a separation unit for separating off salts from a scrubbing solution, wherein the absorption unit and the desorption unit are connected to each other via a first conduit for a regenerated scrubbing solution and a second conduit for a loaded scrubbing solution, wherein the separation unit comprises a crystallizer for forming salt crystals and a first separator unit on the downstream side thereof for separating off the salt crystals, wherein the crystallizer comprises a crystallization chamber for forming the salt crystals and a classifying appliance, constructed as a countercurrent classifier, for separating the salt crystals according to their particle size, wherein a first branch conduit is connected to the crystallization chamber, which first branch conduit opens out into the countercurrent classifier via a second separator unit, where this substream acts as a counterflow, wherein the second separator unit is adapted to retain large and medium salt crystals, and wherein the second separator unit is connected to the crystallization chamber via a conduit for supplying the retained salt crystals.