公开(公告)号：US20230183084A1

公开(公告)日：2023-06-15

申请号：US17921288

申请日：2021-04-07

申请人： CASALE SA

发明人： Iacopo CEREA ,  Ermanno FILIPPI ,  Flavio PEDON ,  Pasquale TALARICO

IPC分类号： C01C1/18 ,  B01J19/24 ,  B01J19/02

CPC分类号： C01C1/185 ,  B01J19/2415 ,  B01J19/02 ,  B01J2219/0218

摘要： A process of making ammonium nitrate from nitric acid and ammonia in a tubular reactor internally coated with a ceramic coating.

公开(公告)号：US20230125818A1

公开(公告)日：2023-04-27

申请号：US17912445

申请日：2021-03-02

申请人： Casale SA

发明人： Simone Gamba

IPC分类号： C07D251/60

摘要： A process for the synthesis of melamine from urea, preferably of the high-pressure type, wherein offgas quenching is performed in a quenching vessel wherein in the upper part of the vessel, a rising flow of offgas is contacted in counter-current with liquid ammonia to obtain precipitation of melamine contained in the offgas and melamine-free anhydrous washed offgas; in the lower part of the vessel, the solid melamine is contacted with a liquid solvent to form a solution of melamine or a melamine slurry.

公开(公告)号：US11511248B2

公开(公告)日：2022-11-29

申请号：US17763400

申请日：2020-09-01

申请人： Casale SA

发明人： Leonardo Marrone

IPC分类号： B01J2/18 ,  B01J2/02

摘要： A method for controlling a prilling bucket in the prilling of a a urea melt (UM) including: feeding the urea melt to a prilling bucket (1) which vibrates under the action of a magnetostrictive device (2), wherein the vibration of the bucket is controlled, as a function of the amount of urea melt to be prilled, by the following steps: acquisition of a time-varying input signal (3) which represents the flow rate of urea melt fed to the prilling bucket; generation of a first signal (5) and of a second signal (6), independently from each other, as a function of said input signal (3); generation of a third signal (10) having a frequency which is modulated by said first signal and an magnitude which is modulated by said second signal, and use of said third signal to drive said magnetostrictive device (2).

公开(公告)号：US11369930B2

公开(公告)日：2022-06-28

申请号：US16085116

申请日：2017-03-07

申请人： CASALE SA

发明人： Ermanno Filippi ,  Enrico Rizzi ,  Mirco Tarozzo

IPC分类号： B01J8/02

摘要： Radial or axial-radial flow catalytic chemical reactor comprising a cylindrical shell and at least one catalytic bed and comprising a plurality of perforated tubes, said tubes having an open end communicating with an inlet of a gaseous flow of reagents in the reactor, said tubes being provided with a plurality of holes on their side surface, said tubes being arranged around the catalytic bed so as to form an outer wall which bounds the catalytic bed and which distributes the reagents inside said bed; each of said tubes being formed by means of longitudinal or helical butt welding of a perforated strip.

公开(公告)号：US20220098035A1

公开(公告)日：2022-03-31

申请号：US17420940

申请日：2019-12-19

申请人： Casale SA

发明人： Luca Zanichelli ,  Giacomo Colmegna

IPC分类号： C01B3/36 ,  F23D14/58

摘要： A process of partial oxidation is performed in a reactor which includes a reaction chamber and a burner assembly, wherein: the burner assembly has a single oxidant nozzle located within an fuel channel, said oxidant nozzle comprises a nozzle pipe and a nozzle outlet, the nozzle pipe and the fuel channel are arranged to produce a diffusion flame, the nozzle outlet has a shape with two or more elongate lobes projecting from a center of the nozzle pipe.

公开(公告)号：US11179692B2

公开(公告)日：2021-11-23

申请号：US16612165

申请日：2018-02-21

申请人： CASALE SA

发明人： Sergio Panza ,  Maddalena Lepri

IPC分类号： B01J8/00 ,  B01J8/02 ,  B01J8/04

摘要： A multi-bed catalytic converter comprising at least a first catalytic bed, a second catalytic bed and a heat exchanger arranged between said first bed and said second bed, wherein said heat exchanger is arranged to transfer heat from the hot effluent of the first bed to a cooling medium; said heat exchanger comprises a plurality of stacked round plates, wherein adjacent plates define gaps therebetween, and the effluent of the first catalytic bed and the cooling medium are respectively fed into alternate gaps.

公开(公告)号：US20210252422A1

公开(公告)日：2021-08-19

申请号：US16972650

申请日：2019-04-10

申请人： Casale SA

发明人： Raffaele Ostuni

IPC分类号： B01D3/14 ,  C07C29/84 ,  B01D3/00 ,  B01D3/32

摘要： Method for revamping a refining section of a methanol distillation plant comprising a medium pressure (MP) column a low pressure (LP) column, wherein both said columns comprise at least one bottom boiler, a gaseous stream of distilled methanol withdrawn from the MP column is fed to at least one bottom boiler of the LP column and a liquid solution containing methanol withdrawn from the MP column is fed to the LP column, the method of revamping comprising the installation of a high pressure (HP) column; the installation of a line feeding a gaseous stream of distilled methanol from the HP column to at least one bottom boiler of the MP column and the installation of a bottom line for exporting from the HP column a liquid stream consisting essentially of water.

公开(公告)号：US20210238038A1

公开(公告)日：2021-08-05

申请号：US17053152

申请日：2019-04-17

申请人： CASALE SA

发明人： Ermanno Filippi ,  Raffaele Ostuni ,  Francesco Baratto

IPC分类号： C01B21/28 ,  C01C1/04

摘要： Integrated process for the synthesis of ammonia and nitric acid including: a) production of an ammonia make-up synthesis gas, comprising steam reforming of a hydrocarbon feedstock under provision of steam reforming heat; catalytic conversion of said make-up synthesis gas into ammonia; catalytic oxidation of a stream of ammonia obtaining a process gas; absorption of said process gas with water obtaining nitric acid, wherein at least a portion of the steam reforming heat is recovered from said hot process gas.

公开(公告)号：US10788273B2

公开(公告)日：2020-09-29

申请号：US15741696

申请日：2016-06-03

申请人： Casale SA

发明人： Enrico Rizzi

IPC分类号： F28F9/013 ,  F28D7/16 ,  F28F1/30 ,  F28F9/22

摘要： Shell-and-tube equipment includes baffles supporting the tubes, each baffle having seats for receiving the tubes shaped so as to receive one or more tubes in at least one free play condition and in a locking condition; each baffle is displaceable with respect to the tube bundle between an assembly position and a working position; in the assembly position the tubes can be received by the baffles in the free play condition while in the working position the tubes are locked.

公开(公告)号：US10514203B2

公开(公告)日：2019-12-24

申请号：US15527989

申请日：2015-11-25

申请人： Casale SA

发明人： Ermanno Filippi ,  Raffaele Ostuni

IPC分类号： F25J3/02 ,  C01B3/02 ,  C07C1/04 ,  C01B3/50 ,  C01B3/56 ,  C01C1/04

摘要： Process for the synthesis of ammonia from a make-up gas containing hydrogen and nitrogen, said process comprising: generation of a synthesis gas (8) containing hydrogen and nitrogen in a molar ratio lower than 3, inside a front-end section (2); a first cryogenic purification, designed to remove nitrogen and raise said molar ratio; conversion of the synthesis gas into ammonia (13) inside a high-pressure synthesis loop (6), with extraction from said loop of a purge stream (14) containing hydrogen and inert gases; wherein at least a portion of said purge stream (14) undergoes a further purification in order to recover at least part of the hydrogen contained therein, obtaining at least one stream (15, 15a, 16, 18) containing recovered hydrogen which is recycled to the process.