公开(公告)号：US12084406B2

公开(公告)日：2024-09-10

申请号：US18069690

申请日：2022-12-21

Applicant: STAMICARBON B.V.

Inventor： Kirk Anguah Ofei ,  Alexander Aleida Antonius Scheerder

IPC: C07C273/04 ,  B01D1/06 ,  B01D3/34 ,  B01J19/00 ,  B01J19/02 ,  B22F7/06 ,  C07C273/16 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48

CPC classification number: C07C273/04 ,  B01D1/065 ,  B01D3/346 ,  B01J19/0013 ,  B01J19/02 ,  C07C273/16 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  B01J2219/00081 ,  B01J2219/0286 ,  B22F7/064 ,  B22F2301/35 ,  C21D2211/005

Abstract: The application provides in an aspect a process for producing urea in a urea plant comprising a high pressure synthesis section comprising a reactor, wherein the process comprises reacting NH3 feed and CO2 feed under urea formation conditions in said reactor to form a urea synthesis solution comprising urea, water, carbamate and ammonia, wherein the process further comprises contacting a carbamate-containing liquid stream with an equipment part of said high pressure synthesis section that is made of a ferritic steel alloy.

公开(公告)号：US11746084B2

公开(公告)日：2023-09-05

申请号：US17624716

申请日：2020-07-03

Applicant: STAMICARBON B.V.

Inventor： Kirk Anguah Ofei ,  Alexander Aleida Antonius Scheerder

IPC: C07C273/04 ,  C07C273/16 ,  B01D1/06 ,  B01D3/34 ,  B01J19/00 ,  B01J19/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/26 ,  B22F7/06

CPC classification number: C07C273/04 ,  B01D1/065 ,  B01D3/346 ,  B01J19/0013 ,  B01J19/02 ,  C07C273/16 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  B01J2219/00081 ,  B01J2219/0286 ,  B22F7/064 ,  B22F2301/35 ,  C21D2211/005

Abstract: The application provides in an aspect a process for producing urea in a urea plant comprising a high pressure synthesis section comprising a reactor, wherein the process comprises reacting NH3 feed and CO2 feed under urea formation conditions in said reactor to form a urea synthesis solution comprising urea, water, carbamate and ammonia, wherein the process further comprises contacting a carbamate-containing liquid stream with an equipment part of said high pressure synthesis section that is made of a ferritic steel alloy.