公开(公告)号：US11992789B2

公开(公告)日：2024-05-28

申请号：US17297611

申请日：2020-01-29

Applicant: YARA INTERNATIONAL ASA

Inventor： Lino Giovanni Porro ,  Luigi Serraiocco

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

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

Abstract: 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：US11571678B2

公开(公告)日：2023-02-07

申请号：US17055501

申请日：2019-05-16

Applicant: YARA INTERNATIONAL ASA

Inventor： Luigi Serraiocco ,  Lino Giovanni Porro

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

Abstract: 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

Applicant: Yara International ASA

Inventor： Lino Giovanni Porro ,  Luigi Serraiocco

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

CPC classification number: B01D1/007 ,  B01D1/06 ,  B01J6/008 ,  C07C273/02 ,  C07C273/16

Abstract: 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.