Patent ID: 8106240
Filing Date: 2012-01-31
Classification: B01D,C07C

Abstract:
1. A process for operating a (A) continuous removal of a target product X in the form of crystals of the target product X from a liquid phase P which consists of the target product X and of constituents B i other than the target product X and whose total mole fraction of the constituents B i has a value M B tot , the process comprising: (a1) conducting a stream of the liquid phase P and, as a constituent thereof, a mass flow {dot over (m)} (a2) simultaneously flowing at least one fluid cooling medium through the at least one primary chamber wherein the at least one fluid cooling medium is fed to the at least one primary chamber with a temperature T (a3) continuously conducting a stream of the suspension S out of the secondary chamber of the heat transferrer, wherein the heat transferrer cools the suspension S under different operating states I and II: with the proviso that {dot over (m)} wherein a total mole fraction M wherein the target product X is acrylic acid, methacrylic acid, p-xylene, or N-vinvlpyrrolidone.