公开(公告)号：US11992789B2

公开(公告)日：2024-05-28

申请号：US17297611

申请日：2020-01-29

申请人： YARA INTERNATIONAL ASA

发明人： Lino Giovanni Porro ,  Luigi Serraiocco

IPC分类号： F25B29/00 ,  B01D1/00 ,  B01D1/06 ,  B01D3/34 ,  F28D7/00 ,  F28D7/16 ,  F28D15/00 ,  F28F9/22 ,  F28D21/00

CPC分类号： B01D3/346 ,  B01D1/0041 ,  B01D1/06 ,  F28D7/1676 ,  F28F9/22 ,  F28D2021/0022 ,  F28F2009/226 ,  F28F2009/228

摘要： Shell-and-tube strippers for stripping a urea/carbamate mixture, related systems, methods, and uses. The stripper includes a shell and a plurality of tubes disposed within the shell. Baffles and deflectors offer improved homogeneity of heating fluid flow in the stripper's shell-side space.

公开(公告)号：US11203570B2

公开(公告)日：2021-12-21

申请号：US16967152

申请日：2019-02-04

申请人： YARA INTERNATIONAL ASA

发明人： Volker Siepmann ,  Lino Giovanni Porro ,  Elisa Burgato

IPC分类号： C07C273/04 ,  B01J19/00 ,  G05B13/04

摘要： The invention relates to a virtual sensing method and system for controlling at least one composition variable in a urea production process, based on a plurality of online measured process variables and a model, wherein the model is used to estimate, during the urea production process, the at least one composition variable indicative of a urea content on the basis of the plurality of online measured process variables, and modifying at least one of the plurality of online measured process variables for ensuring that a value of the at least one composition variable is within a predetermined range. The invention also relates to determining the model.

公开(公告)号：US11976027B2

公开(公告)日：2024-05-07

申请号：US17418512

申请日：2020-04-30

申请人： YARA INTERNATIONAL ASA

发明人： Lino Giovanni Porro

IPC分类号： C07C273/16 ,  B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C269/08

CPC分类号： C07C273/16 ,  B01J8/067 ,  B01J19/0013 ,  B01J19/006 ,  B01J19/2425 ,  C07C269/08 ,  B01J2208/00849 ,  B01J2208/00938 ,  B01J2208/065 ,  B01J2219/00081 ,  B01J2219/00099 ,  B01J2219/185 ,  B01J2219/1943

摘要： Shell-and-tube strippers for stripping a urea/carbamate mixture, related systems, methods, and uses. The stripper includes a shell, a plurality of tubes disposed within the shell, and a heating fluid distributor for homogenizing the flow of a heating fluid near a heating fluid inlet. The heating fluid distributor includes an edge wall and a laterally disposed heating fluid distribution plate. Related systems, methods, and uses are also provided.

公开(公告)号：US11571678B2

公开(公告)日：2023-02-07

申请号：US17055501

申请日：2019-05-16

申请人： YARA INTERNATIONAL ASA

发明人： Luigi Serraiocco ,  Lino Giovanni Porro

IPC分类号： B01J19/24 ,  B01J19/00 ,  C07C273/04 ,  C07C273/16

摘要： A stripper for stripping a urea/carbamate mixture. The stripper comprises a shell and a plurality of tubes disposed within the shell. A shell-side space is provided between the tubes and the shell. A first heating fluid inlet, a second heating fluid inlet, and a heating fluid outlet are in fluid connection with the shell-side space. The second heating fluid inlet is disposed between the first heating fluid inlet and the heating fluid outlet. Related uses, systems, and methods are provided as well.

公开(公告)号：US12102938B2

公开(公告)日：2024-10-01

申请号：US17797410

申请日：2021-02-25

申请人： Yara International ASA

发明人： Lino Giovanni Porro ,  Luigi Serraiocco

IPC分类号： B01D1/06 ,  B01D1/00 ,  B01J6/00 ,  C07C273/02 ,  C07C273/16

CPC分类号： B01D1/007 ,  B01D1/06 ,  B01J6/008 ,  C07C273/02 ,  C07C273/16

摘要： A distribution chamber suitable for distributing a liquid stream to a plurality of pipe openings distributed over a planar surface. The distribution chamber includes three perforated plates. A method to distribute a liquid stream to a plurality of pipe openings, a method to decompose ammonium carbamate from an aqueous solution comprising ammonium carbamate and a method to produce a concentrated aqueous urea solution from a diluted aqueous urea solution.

公开(公告)号：US11293310B1

公开(公告)日：2022-04-05

申请号：US17419815

申请日：2020-05-08

申请人： YARA INTERNATIONAL ASA

发明人： Danny Franceus ,  Lino Giovanni Porro

IPC分类号： F01K7/38 ,  C07C273/04 ,  F01K7/12 ,  C01C1/04 ,  F01K15/00 ,  F01K7/10 ,  F01K7/34

摘要： A steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit, including a high-pressure steam line, two medium-pressure steam lines and first and second turbines supplied with high-pressure steam by the high-pressure steam line; wherein the first turbine is a condensing-type turbine with extraction into one of the two medium-pressure steam lines, and is configured to deliver power to a syngas compressor in the ammonia-producing unit of the plant, and the second turbine is a counter-pressure type turbine with extraction connected to the two medium-pressure steam lines and is configured to deliver power to a CO2 compressor in the urea-producing unit of the plant. A method to distribute high-pressure steam in a steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit and a method to revamp the steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit.