| 摘要 |
The invention relates to a deaeration system for feeding stock into a headbox (10) of a paper machine or equivalent. The deaeration system comprises a deaeration tank (11), to which a duct (a1, a2) leads from a wire pit (12) either directly or through a hydrocyclone unit (16). The deaeration system comprises a duct (a4) leading to the deaeration tank (11) from a device (13) producing a vacuum in order to produce a vacuum inside the deaeration tank (11). The vacuum in the deaeration tank (11) is in a range of 30 kPa - 60kPa. |
