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Patent Agency Ranking
公开(公告)号：AT520455T
公开(公告)日：2011-09-15
申请号：AT08774160
申请日：2008-06-20
Applicant: BASF SE
Inventor： BECHTEL MARCUS , HEPFER BENJAMIN , WILLE MICHAEL HYATT , DAISS ANDREAS , GEIER REINER , ISELBORN STEFAN , SAUTER JOHN
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公开(公告)号：DE502004011507D1
公开(公告)日：2010-09-23
申请号：DE502004011507
申请日：2004-01-16
Applicant: BASF SE
Inventor： KUHRS CHRISTIAN , DANZ ECKEHARD , STEINER WOLFGANG , RAHN RALF-THOMAS , GRASSLER THOMAS , GEIER REINER , HARTH KLAUS , HOELZLE MARKUS
IPC: C07D251/60
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公开(公告)号：AT477247T
公开(公告)日：2010-08-15
申请号：AT04702691
申请日：2004-01-16
Applicant: BASF SE
Inventor： KUHRS CHRISTIAN , DANZ ECKEHARD , STEINER WOLFGANG , RAHN RALF-THOMAS , GRASSLER THOMAS , GEIER REINER , HARTH KLAUS , HOELZLE MARKUS
IPC: C07D251/60
Abstract: The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.
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公开(公告)号：CA2691642C
公开(公告)日：2015-12-22
申请号：CA2691642
申请日：2008-06-20
Applicant: BASF SE
Inventor： BECHTEL MARCUS , HEPFER BENJAMIN , WILLE MICHAEL , DAISS ANDREAS , GEIER REINER , ISELBORN STEFAN , SAUTER JOHN
Abstract: The invention relates to a reactor (R) for performing a three-phase reaction of a fluid phase (1) and a gaseous phase (2) on a packed bed catalyst (F), the packed bed catalyst (F) being disposed horizontally in the reactor (R) and the fluid phase (1) and the gaseous phase (2) being fed through the reactor (R) from the bottom to the top, using a mixing and distributing device (MV) across the packed bed catalyst (F), characterized in that the mixing and distributing device (MV) comprises a trough distributor (TV) for the fluid phase (1) having trough-shaped channels (K) and drain tubes (A) in the trough-shaped channels (K) for the fluid phase (1), and a distributor floor (B) disposed below and at a distance from the trough distributor (TV) in which vertical spouts (T) are disposed, having one or more openings (P1) for the inlet of the gaseous phase (2) and one or more openings (P2) disposed below the openings (P1) for the inlet of the gaseous phase, for the inlet of the fluid phase (1) into the spouts (T), and the number and size of the openings (P2) for the inlet of the fluid phase (1) being designed such that the fluid level on the distribution floor (B) is adjusted to be below the openings (P1) for the inlet of the gaseous phase (2) and above the openings (P2) for the inlet of the fluid phase (1) for a prescribed inlet flow of fluid.
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公开(公告)号：BRPI0812907A2
公开(公告)日：2014-12-09
申请号：BRPI0812907
申请日：2008-06-20
Applicant: BASF SE
Inventor： BECHTEL MARCUS , HEPFER BENJAMIN , WILLE MICHAEL , DAISS ANDREAS , GEIER REINER , ISELBORN STEFAN
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