摘要:
A process is proposed for coagulation of an aqueous polymer dispersion, which comprises, during or after the coagulation, converting the dissolved coagulation salt into an insoluble form.
摘要:
A chemical reaction is performed by first adding the incoming stream to a shear zone of an apparatus by way of a feed upstream of the shear zone. The apparatus includes a rotor and a stator, with the shear zone being formed by facing surfaces of the rotor and the stator. The shear zone is followed by a mixing zone having an outlet toward an outside of the apparatus. A gage pressure of at least 1 bar is generated in the shear zone. The gaseous phase is mixed into the mixing zone through the aperture and into the incoming stream under the generated gage pressure to create a reaction mixture. The reaction mixture is fed to a residence-time zone via a downstream outlet from the mixing zone, where a reaction takes place, and pressure in the mixing zone is controlled using a downstream pressure-control valve.