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公开(公告)号：US11084016B2
公开(公告)日：2021-08-10
申请号：US16636774
申请日：2018-07-17
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Gian Luca Bonaccorsi , Giuseppe Penzo , Enrico Balestra , Maurizio Dorini , Riccardo Rinaldi
Abstract: A manhole for a polymerization unit having a through-hole formed with a shoulder matching a corresponding shoulder of a plug of a closure member operatively inserted in the through-hole. The through-hole can be closed with a minimum clearance, such that polymer particles do not deposit in the gap between the wall of the unit and the plug of the closure member.
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