公开(公告)号：US20240059623A1

公开(公告)日：2024-02-22

申请号：US18256554

申请日：2023-02-14

Applicant: STAMICARBON B.V.

Inventor： Johan Albert Arno VAN DEN TILLAART ,  Eelco MOSTERT

IPC: C05C9/00 ,  C05G5/23 ,  C07C273/04 ,  C07C273/16

CPC classification number: C05C9/00 ,  C05G5/23 ,  C07C273/04 ,  C07C273/16

Abstract: A urea plant and urea production process of the stripping type are provided that are adapted for making Diesel Exhaust Fluid (DEF) or precursor thereof in a DEF production unit downstream of a treatment section. The treatment section receives a part of the urea synthesis stream from a reaction zone, in particular bypassing the HP stripper.

公开(公告)号：US20240092730A1

公开(公告)日：2024-03-21

申请号：US18248902

申请日：2022-12-19

Applicant: STAMICARBON B.V.

Inventor： Johan Albert Arno VAN DEN TILLAART ,  Eelco MOSTERT

IPC: B01D5/00 ,  C07C273/04

CPC classification number: B01D5/0012 ,  C07C273/04

Abstract: The disclosure pertains to a urea plant and process of the thermal stripping type as well as to a method of modifying a urea plant of the thermal stripping type. Provided is a urea plant with a thermal stripper and a high pressure carbamate condenser with a shell space wherein gas from the stripper is condensed in the shell space.

公开(公告)号：US20240082808A1

公开(公告)日：2024-03-14

申请号：US18257475

申请日：2022-04-28

Applicant: STAMICARBON B.V.

Inventor： Ronny Albert Mathijs PUSTJENS ,  Johan Albert Arno VAN DEN TILLAART

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

CPC classification number: B01J19/249 ,  B01J19/0066 ,  C07C273/04 ,  B01J2219/2458

Abstract: Embodiments of the disclosure pertain to a chemical reactor comprising a mixing zone comprising first static mixer and a second static mixer both arranged in shell of the reactor, wherein the second static mixer is positioned further from said first inlet than said first static mixer, wherein the second static mixer is adapted for more intimate mixing of fluids in the reaction mixture than the first static mixer.

公开(公告)号：US20190185422A1

公开(公告)日：2019-06-20

申请号：US16186410

申请日：2018-11-09

Applicant: Stamicarbon B.V.

Inventor： Ronny Albert Mathijs PUSTJENS ,  Johan Albert Arno VAN DEN TILLAART

IPC: C07C273/04 ,  C07C273/14 ,  B01D5/00 ,  B01J19/00

Abstract: Processes and plants for the production of purified urea solution are described. In a described urea production process, urea is produced in a synthesis section without a high pressure stripper and the urea solution is subjected to purification after the recovery section, to give purified urea solution and off-gas. The purification comprises e.g. steam stripping.