INLINE DILUTION OF MICROFIBRILLATED CELLULOSE

The present invention relates a process and a system for the point-of-use dilution of microfibrillated cellulose (MFC) from a higher solids content to a lower solids content， for example from a solids content in the range of 5 % weight by weight ("w/w") - 50 % w/w， preferably 5 % w/w - 30 % w/w， further preferably 5 % w/w - 15 % w/w， down to a solids content of below 7 % w/w， preferably below 5 % w/w， preferably to a solids content of 0.01 % w/w - 5 % w/w， further preferably to a solids content of 0.1 % w/w - 3 % w/w. The process at least comprises the following steps: (i) providing microfibrillated cellulose in a solvent， wherein the solids content is in the range of 5 % weight by weight ("w/w") - 50 % w/w， preferably 5 % w/w - 30 % w/w， further preferably 5 w/w - 15 % w/w; (ii) subjecting said microfibrillated cellulose from step (i) to a dilution step in a rotor-stator mixer; (iii) simultaneously to step (ii): injecting solvent into the rotor-stator mixer， or into a volume segment upstream of the rotor-stator mixer， in order to lower the solids content of the microfibrillated cellulose in the rotor-stator mixer. The present invention relates a process and a system for the point-of-use dilution of microfibrillated cellulose (MFC) from a higher solids content to a lower solids content， for example from a solids content in the range of 5 % weight by weight ("w/w") - 50 % w/w， preferably 5 % w/w - 30 % w/w， further preferably 5 % w/w - 15 % w/w， down to a solids content of below 7 % w/w， preferably below 5 % w/w， preferably to a solids content of 0.01 % w/w - 5 % w/w， further preferably to a solids content of 0.1 % w/w - 3 % w/w. The process at least comprises the following steps: (i) providing microfibrillated cellulose in a solvent， wherein the solids content is in the range of 5 % weight by weight ("w/w") - 50 % w/w， preferably 5 % w/w - 30 % w/w， further preferably 5 w/w - 15 % w/w; (ii) subjecting said microfibrillated cellulose from step (i) to a dilution step in a rotor-stator mixer; (iii) simultaneously to step (ii): injecting solvent into the rotor-stator mixer， or into a volume segment upstream of the rotor-stator mixer， in order to lower the solids content of the microfibrillated cellulose in the rotor-stator mixer.