Process arrangement for the short circulation in a paper machine

摘要

The invention relates to a process arrangement for producing a pulp for the head box of a paper machine in a short circulation, in which fresh pulp Fm is not mixed into a feed going to the deaeration tank 20. The combined wire well 30 in the process arrangement has been divided into two sections 31, 32 or two interacting tanks, of which the first section 31 or the tank is arranged in the form of a feed tank for the deaeration and the second section 32 or the tank in the form of a dilution tank for the head box pulp, into which the fresh pulp Fm is designed to be fed. In the one section 32 of the combined wire well 30 there is an open standardised surface S1 in order to standardise the suction pressure of the feed pump 17c for the pulp and the counter-pressure of the fresh pulp feed Fm in relation to the outside air. Return flows with pulsating pressure level or flows such as the overflow Fs from the deaeration tank 20 and/or the wire water flow F1 are introduced into the first section 31 or the tank of the combined wire well 30. <IMAGE>