In pulp preparation, for the consistency range of 0.5 to 14%, current technology uses different measuring principles:
- Total consistency by optical or microwave principle: in-line measurement
- Ash content by optical (depolarized retro-diffusion) principle: on-line measurement
- Consistency by shear-force principle (rotating or blade): in-line measurement
The measurement of total consistency and ash content hence necessitates the use of several measurement probes.
BTG's innovation TCR-2502 / TCR-2512 use one unique measurement principle to very precisely and separately evaluate:
- Total consistency in the range of 0.5 - 12%
- Filler content in the range of 1 - 70%
- Fiber consistency in the range of 0.4 - 10%.
This method is applicable in each step of the papermaking process. The technology allows financial gains of 50 up to 300 k€ per year: from the pulper to the machine chest for pulp, waste water and slurries
- After the pulper: filler control through raw material selection
- Waste water treatment, deinking: productivity optimization through filler content management
- Refining: energy savings through precise and true calculation of the specific energy on the fiber
- Mixing chest: precise substitution of fibers by filler. Improved use of broke through the control of filler content
- Headbox: reduced basis weight variation
- Effluent treatment: precise evaluation of fiber loss and slurry optimization