DEVICE AND METHOD FOR CONTROLLING TENSION IN A WEB OF CELLULOSE PULP IN A CELLULOSE PULP DRYER

摘要

A gas blowing cellulose pulp dryer (1) being operative for drying a web (14) of cellulose pulp by means of gas supplied from gas outlets arranged to blow gas towards the web (14). The cellulose pulp dryer (1) comprises at least one turning roll (7) making the web (14) turn when travelling from a first web tension zone (19) of the cellulose pulp dryer (1) to a second web tension zone (20) of the cellulose pulp dryer (1). The cellulose pulp dryer (1) further comprises at least a first web tension control device (28) arranged at the turning roll (7) for controlling the tension of the web (14) in at least one of the web tension zones (19, 20).