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公开(公告)号：US20220169592A1
公开(公告)日：2022-06-02
申请号：US17602366
申请日：2020-04-14
发明人： Thomas Knauf , Murat Kalem , Christian Drumm , Alexandre Racoes
IPC分类号： C07C201/08 , C07C201/16 , B01J19/24 , B01D19/00 , B01D17/02
摘要： The invention relates to a continuously operating process for producing nitrobenzene, comprising the following steps: a) nitriding benzene in adiabatic conditions with sulfuric acid and nitric acid, using a stoichiometric excess of benzene in relation to the nitric acid; b) first separating a gaseous phase containing benzene and gaseous secondary components from the raw process product of the nitridation in a gas separator provided specifically for this purpose, then separating, in a downstream phase-separating apparatus, the resulting liquid phase, which is depleted in gaseous components and contains nitrobenzene and sulfuric acid, into a sulfuric acid phase and a nitrobenzene phase; and c) processing the nitrobenzene phase, obtaining nitrobenzene. The invention also relates to a production plant suitable for carrying out the claimed process.
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公开(公告)号：US20220162151A1
公开(公告)日：2022-05-26
申请号：US17602333
申请日：2020-04-14
发明人： Thomas Knauf , Murat Kalem , Christian Drumm , Alexandre Racoes
IPC分类号： C07C201/08 , C07C201/16
摘要： The invention relates to a continuously operating process for producing nitrobenzene, comprising the following steps: a) nitriding benzene in adiabatic conditions with sulfuric acid and nitric acid, using a stoichiometric excess of benzene in relation to the nitric acid, in multiple parallel reactors; b) first combining the raw process products of the nitridation from the parallel reactors to form a mixed flow in a device provided specifically for this purpose, then separating the mixed flow into a sulfuric acid phase and a nitrobenzene phase in a downstream phase separation apparatus; and c) processing the nitrobenzene phase, obtaining nitrobenzene. The invention also relates to a production plant suitable for carrying out the claimed process.
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公开(公告)号：US10894222B2
公开(公告)日：2021-01-19
申请号：US16485492
申请日：2018-02-12
IPC分类号： B01D1/06 , B01D1/00 , C07C263/20 , B01D1/30
摘要： The present invention relates to a distributor device (10000) for the even distribution of a fluid (10) into 2 or more fluid streams each containing gas (11) and liquid (12), with a falling film evaporator (100000), in which the distributor device according to the invention serves to distribute the 2 or more fluid streams onto the heating pipes of the evaporator, and to the use of the distributor device (10000) according to the invention and in particular the falling film evaporator (100000) according to the invention in the production and/or preparation of chemical products. The distributor device according to the invention is characterized, in particular, by a swirl breaker (600) for the gas phase (11) which arises from separating the fluid (10) into a gas phase (11) and a liquid phase (12) within the distributor device.
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公开(公告)号：US20200223787A1
公开(公告)日：2020-07-16
申请号：US16648366
申请日：2018-09-14
IPC分类号： C07C227/40 , C07C229/24
摘要： The present invention relates to a method for purifying polyaspartic acid ester compositions and to the provision of polyaspartic acid ester compositions that contain 0.01 to
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公开(公告)号：US10968165B2
公开(公告)日：2021-04-06
申请号：US16648366
申请日：2018-09-14
IPC分类号： C07C227/40 , C07C229/24 , C07C227/06
摘要： The present invention relates to a method for purifying polyaspartic acid ester compositions and to the provision of polyaspartic acid ester compositions that contain 0.01 to
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