公开(公告)号：EP4098356A1

公开(公告)日：2022-12-07

申请号：EP22186506.6

申请日：2019-01-14

Applicant: CASALE SA

Inventor： SCOTTO, Andrea ,  FUMAGALLI, Matteo

IPC: B01J19/00 ,  C07D251/60 ,  C07C273/12

Abstract: Plant for the synthesis of melamine starting from urea, wherein the stream of offgas containing NH3 and CO2 produced by the synthesis of melamine is converted into urea in a dedicated urea plant, wherein said stream of offgas provides at least 90% of the ammonia and CO2 supply of said urea plant.

公开(公告)号：EP3743203A1

公开(公告)日：2020-12-02

申请号：EP19700298.3

申请日：2019-01-14

Applicant: CASALE SA

Inventor： SCOTTO, Andrea ,  FUMAGALLI, Matteo

IPC: B01J19/00 ,  C07D251/60 ,  C07C273/12

公开(公告)号：EP3224240B1

公开(公告)日：2019-01-23

申请号：EP15781897.2

申请日：2015-10-09

Applicant: CASALE SA

Inventor： SCOTTO, Andrea

IPC: C07C273/04

公开(公告)号：EP2688840B1

公开(公告)日：2014-12-17

申请号：EP12702846.2

申请日：2012-02-10

Applicant: CASALE SA

Inventor： FILIPPI, Ermanno ,  BADANO, Marco ,  ZARDI, Federico ,  SCOTTO, Andrea

IPC: C01C1/04 ,  C07C273/04

CPC classification number: C07C273/10 ,  C01C1/0488 ,  Y02P20/52 ,  C07C275/02

Abstract: A process for ammonia-urea production where: liquid ammonia produced in an ammonia section is fed to a urea section directly at the ammonia synthesis pressure, and where the liquid ammonia is purified at high pressure with the steps of: cooling the liquid ammonia (20) obtaining a cooled liquid ammonia stream (21), separating a gaseous fraction (22) comprising hydrogen and nitrogen from said cooled liquid ammonia, obtaining purified liquid ammonia (23) at a high pressure, and reheating said purified liquid ammonia (23) after separation of said gaseous fraction, obtaining a reheated purified ammonia (24) having a temperature suitable for feeding to the urea synthesis process. The application also deals with an ammonia-urea plant comprising an ammonia cooler, a liquid-gas separator and an ammonia re-heater and with a method for revamping existing ammonia-urea plants.

公开(公告)号：EP3487841A1

公开(公告)日：2019-05-29

申请号：EP17731572.8

申请日：2017-06-21

Applicant: Casale SA

Inventor： SCOTTO, Andrea ,  GAMBA, Simone

IPC: C07D251/60 ,  C07D251/62

公开(公告)号：EP3416953A1

公开(公告)日：2018-12-26

申请号：EP17701154.1

申请日：2017-01-25

Applicant: Casale SA

Inventor： DI CARLO, Gabriele ,  SCOTTO, Andrea ,  GAMBA, Simone

IPC: C07D251/60 ,  C07C273/12

Abstract: A high pressure melamine plant comprising a synthesis section and a melamine purification section, wherein the synthesis section provides a first melamine-containing stream (6), and said melamine purification section comprises: a quencher (2) receiving said first melamine-containing stream (6) from the synthesis section; a stripper (3) fed with a second melamine-containing stream (7) from said quencher (2), wherein purified melamine (11) is collected and vapours (10) are extracted; a heat exchanger (12), wherein said vapours (10) are condensed providing a condensed stream (14); an absorber (4) fed with said condensed stream (14) providing an aqueous solution (15) comprising ammonia and carbon dioxide, at least a portion (15b) of said aqueous solution being exported from the purification section (200) of the plant.

公开(公告)号：EP2978741A1

公开(公告)日：2016-02-03

申请号：EP14707820.8

申请日：2014-03-05

Applicant: CASALE SA

Inventor： SCOTTO, Andrea ,  BERTINI, Paolo ,  GABBIADINI, Serena

IPC: C07C273/04 ,  B01J10/00

CPC classification number: B01J10/00 ,  B01J2219/00024 ,  C07C273/04

Abstract: A method for revamping a self-stripping urea plant comprising the installation of a new CO2-stripping synthesis section (6), wherein at least part of the aqueous urea solution (10) leaving said new section (6) is directed to the existing low pressure recovery section (4) of the self-stripping plant, by-passing the existing self-stripping high-pressure section (2) and medium pressure treatment section (3).

公开(公告)号：EP4477294A1

公开(公告)日：2024-12-18

申请号：EP23179663.2

申请日：2023-06-16

Applicant: CASALE SA

Inventor： SCOTTO, Andrea ,  GAMBA, Simone ,  DI CARLO, Gabriele

IPC: B01D53/58 ,  B01D53/14 ,  B01D53/62 ,  C07D251/60 ,  F28D7/00 ,  B01D53/54 ,  B01D53/78 ,  F28F9/013 ,  F28F9/02 ,  F28F9/22

Abstract: A melamine offgas washing section (100) wherein melamine offgas (3) is washed with urea melt in a scrubber (101) and the urea melt (9) collected from the scrubber after washing is partly recirculated to the scrubber, wherein the recirculated urea melt is cooled in a urea melt cooler (104) external to the scrubber, wherein the urea melt cooler is a floating-head shell-and-tube apparatus.

公开(公告)号：EP3524597B1

公开(公告)日：2020-04-22

申请号：EP19160051.9

申请日：2017-01-25

Applicant: CASALE SA

Inventor： DI CARLO, Gabriele ,  SCOTTO, Andrea ,  GAMBA, Simone

IPC: C07D251/60

公开(公告)号：EP2978741B2

公开(公告)日：2020-03-18

申请号：EP14707820.8

申请日：2014-03-05

Applicant: CASALE SA

Inventor： SCOTTO, Andrea ,  BERTINI, Paolo ,  GABBIADINI, Serena

IPC: C07C273/04 ,  B01J10/00