The TMP pilot refining system has been developed for studying the mechanical pulping process and designed for short time conversions and adjustments.

 

The refining system is of non-mill size and the production rate is therefore low; you can chose between 300-450 g/min dry weight. The benefit is that less than 15 kg (dry weight) of chips or pulp is needed for a complete investigation.

 

Refining is performed using a conventional two-stage continuous process with a pressurized first stage followed by an atmospheric second stage. Maximum pressure on the preheater and the refiner is 8 bar.

 

Refining can take place in a chemical environment varied in the pH-range of 3-14. The chip is fed to the refiner by a continuosly lock chamber and the pulp by a belt conveyor. The belt conveyor also permits feeding of other soft materials like straw into an atmospheric refining stage. Impregnation equipment, linked to the refiner system, makes it possible to treat up to 45 kg of chip straw in a batch or other kind och material under well-defined conditions. The impregnations is carried out either by pressure pulsation at indoor temperature or by a steaming/soaking technique. The computerized control system makes it possible to adjust the refiner plate gap by remote control to a specific plate gap.