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1. 发明申请

US20180036723A1 PROCESS FOR THE REGENERATION OF A TITANIUM ZEOLITE CATALYST FOR PROPYLENE EPOXIDATION 审中-公开
公开(公告)号：US20180036723A1
公开(公告)日：2018-02-08
申请号：US15550581
申请日：2016-02-12
申请人： BASF SE , Dow Global Technologies LLC
发明人： Dominic RIEDEL , Joaquim Henrique TELES , Daniel URBANCZYK , Ulrike WEGERLE , Luise SPISKE , Andrei-Nicolae PARVULESCU , Alexander SCHROEDER , Ulrich MUELLER , Meinolf WEIDENBACH , Werner J. WITZL
IPC分类号： B01J29/89 , C07D301/12 , B01J38/48 , B01J29/90 , B01J38/12
CPC分类号： B01J29/89 , B01J29/90 , B01J35/023 , B01J35/1061 , B01J38/12 , B01J38/48 , B01J2229/183 , B01J2229/186 , C01B39/085 , C07D301/12 , Y02P20/52 , Y02P20/584
摘要： The invention relates to process for the regeneration of a catalyst comprising a titanium containing zeolite as catalytically active material comprising a stage comprising introducing a feed stream comprising propene, hydrogen peroxide or a hydrogen peroxide source, and an organic solvent into a reactor containing a catalyst comprising the titanium containing zeolite, subjecting the feed stream in the reactor to epoxidation conditions in the presence of the catalyst, removing a product steam comprising propylene oxide and the organic solvent from the reactor, stopping introducing the feed stream, washing the catalyst with a liquid aqueous system and calcining the washed catalyst.

2. 发明公开

US20240368059A1 PROCESS FOR RECOVERING PROPYLENE 审中-公开
公开(公告)号：US20240368059A1
公开(公告)日：2024-11-07
申请号：US18285665
申请日：2022-04-08
申请人： BASF SE , Dow Global Technologies LLC
发明人： Werner J. WITZL
IPC分类号： C07C7/09 , B01J20/16
CPC分类号： C07C7/09 , B01J20/165 , B01J2523/41 , B01J2523/47
摘要： The present invention relates to a process for recovering propylene from a gaseous stream comprising propylene and a light-boiling compound, the light-boiling compound having a boiling point at 1013 mbar (abs.) below −50° C., in a condensing unit, wherein the condensing unit has a first zone, preferably being a condensing zone, and a second zone, preferably being an evaporation zone, wherein first and second zone are spatially separated from each other but are thermally conductive coupled to each other, the process comprising
(i) providing a gaseous stream comprising propylene and a light-boiling compound;
(ii) providing a liquid cooling medium stream having a temperature T1;
(iii) cooling the liquid cooling medium stream in two or more cooling steps to a temperature T4, which is lower than the temperature T1, thereby obtaining a liquid cooling medium stream having temperature T4;
(iv) feeding the gaseous stream comprising propylene and a light-boiling compound from (i) into the first zone of the condensing unit and feeding the liquid cooling medium stream having the temperature T4 obtained from (iii) to the second zone of the condensing unit;
(v) expanding the liquid cooling medium stream, preferably adiabatically, within the second zone, thereby obtaining from the first zone an at least partially liquid stream comprising propylene, which is depleted in light-boiling compounds compared to the stream provided in (i).

3. 发明申请

US20190169149A1 A PROCESS FOR PREPARING PROPYLENE OXIDE 审中-公开
公开(公告)号：US20190169149A1
公开(公告)日：2019-06-06
申请号：US16318221
申请日：2017-07-19
申请人： BASF SE , Dow Global Technologies LLC
发明人： Joaquim Henrique TELES , Marvin KRAMP , Christian MUELLER , Nicolai Tonio WOERZ , Bernd METZEN , Tobias KELLER , Dominic RIEDEL , Heiner SCHELLING , Markus WEBER , Daniel URBANCZYK , Andrei-Nicolae PARVULESCU , Ulrike WEGERLE , Ulrich MUELLER , Meinolf WEIDENBACH , Werner J. WITZL , Karsten LUECKE
IPC分类号： C07D301/32 , C07D301/12 , B01D3/00 , B01D3/40 , B01D3/14 , B01D5/00
CPC分类号： C07D301/32 , B01D1/28 , B01D3/00 , B01D3/009 , B01D3/143 , B01D3/40 , B01D5/006 , B01J29/085 , B01J29/7038 , B01J29/86 , B01J29/89 , B01J35/002 , B01J35/023 , B01J37/0045 , B01J2229/186 , B01J2229/42 , C07D301/12 , C07D303/04 , Y02P20/127 , Y02P20/52
摘要： The present invention is related to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, water, organic solvent, and propene; (iv) separating propene from the effluent stream by distillation, comprising (iv.1) subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous top stream S0 enriched in propene compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream S01 enriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (iv.2) returning a condensed portion of the stream S0 to an upper part of the distillation unit.

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