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公开(公告)号:US20170174585A1
公开(公告)日:2017-06-22
申请号:US15388220
申请日:2016-12-22
发明人: Cyprien CHARRA , Adrien MEKKI-BERRADA , Frederic BAZER-BACHI , Beatrice FISCHER , Florian HILLY
IPC分类号: C07C5/03
摘要: The present invention relates to a process for the selective hydrogenation of a feed of hydrocarbons containing polyunsaturated molecules comprising at least 3 carbon atoms, using a single principal fixed bed reactor R1 containing at least two catalytic beds A1 and A2 and a fixed bed guard reactor which is reduced in size, said hydrogenation reactors being disposed in series for use in a cyclic manner in accordance with a sequence of steps which can be used to short-circuit the catalytic bed or beds of the principal reactor which have been at least partially deactivated with the aid of the guard reactor, while ensuring the continuous operation of the process.
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2.
公开(公告)号:US20190161595A1
公开(公告)日:2019-05-30
申请号:US16315240
申请日:2017-07-04
CPC分类号: C08J11/24 , C07C67/03 , C07C67/54 , C07C67/56 , C07C2601/16 , C08J11/16 , C08J2363/02 , C08J2367/02 , Y02W30/705 , Y02W30/706 , C07C69/82
摘要: A subject-matter of the invention is a process for the depolymerization of a polyester feedstock comprising opaque PET, the said process comprising at least the stages of conditioning, of depolymerization and of separation of the diol and of separation of the liquid effluent rich in monomers, followed by a decolouration stage.
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3.
公开(公告)号:US20190153338A1
公开(公告)日:2019-05-23
申请号:US16320816
申请日:2017-06-22
发明人: Cyprien CHARRA , Vincent COUPARD , Jeremy GAZARIAN , Adrien MEKKI-BERRADA , Jean-Marc SCHWEITZER
摘要: This invention has as its object a method for selective hydrogenation of a feedstock comprising a pyrolysis gasoline carried out in a three-phase reactor.
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