公开(公告)号：US11241649B2

公开(公告)日：2022-02-08

申请号：US17273813

申请日：2020-05-22

Applicant: STAMICARBON B.V.

Inventor： Giusy Elisa Puci ,  Wilfried Marc Renaat Dirkx

IPC: B01D47/05 ,  B01D47/06 ,  B01D47/10 ,  B01D47/12 ,  B01D53/58 ,  B01D53/78 ,  B01J2/16 ,  C07C273/16

Abstract: Disclosed is a urea finishing method including an off-gas treatment, the method comprising urea finishing and supplying the off-gas to a quenching zone and to a scrub column comprising a sump and a venturi stage, wherein the sump has a split sump configuration with two compartments.

公开(公告)号：US10954186B2

公开(公告)日：2021-03-23

申请号：US16424346

申请日：2019-05-28

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa Puci ,  Joey Dobree

IPC: C07C273/04 ,  B01D53/00 ,  C05C1/00 ,  B01D53/14 ,  C01C1/18 ,  C07C273/16

Abstract: The invention relates to a process for the production of urea ammonium nitrate, a system and a method of modifying a plant. The process comprises subjecting ammonia-containing off-gas resulting from the production of ammonium nitrate (AN off-gas) to condensation under acidic conditions so as to form an acidic condensate, and using at least part of the acidic condensate as an acidic scrubbing liquid in a finishing treatment section having a gas inlet in fluid communication with a gas outlet of a finishing section of a urea production unit, wherein the finishing section is adapted to solidify urea liquid, and wherein said finishing treatment section is adapted to subject ammonia-containing off-gas of the finishing section to treatment with an acidic scrubbing liquid.

公开(公告)号：US10457609B2

公开(公告)日：2019-10-29

申请号：US15573448

申请日：2016-12-21

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa Puci ,  Joey Dobree

IPC: C05C9/00 ,  C05C1/00 ,  C01C1/18 ,  C07C273/04 ,  B01J12/00 ,  B01J14/00 ,  B01D53/58 ,  B01D53/14 ,  B01D53/78 ,  B01J19/24

Abstract: The invention relates to a process for the production of urea ammonium nitrate, a system and a method of modifying a plant. The process comprises treating ammonia-containing off-gas resulting from the production of ammonium nitrate (AN off-gas) with acidic scrubbing liquid in a finishing treatment section having a gas inlet in fluid communication with a gas outlet of a finishing section of a urea production unit, wherein the finishing section is adapted to solidify urea liquid, and wherein said finishing treatment section is adapted to subject ammonia-containing off-gas of the finishing section to treatment with an acidic scrubbing liquid.

公开(公告)号：US10654758B2

公开(公告)日：2020-05-19

申请号：US16569479

申请日：2019-09-12

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa Puci ,  Joey Dobree

IPC: C05C9/00 ,  C05C1/00 ,  C01C1/18 ,  C07C273/04 ,  B01J12/00 ,  B01J14/00 ,  B01D53/58 ,  B01D53/14 ,  B01D53/78 ,  B01J19/24

Abstract: The invention relates to a process for the production of urea ammonium nitrate, a system and a method of modifying a plant. The process comprises treating ammonia-containing off-gas resulting from the production of ammonium nitrate (AN off-gas) with acidic scrubbing liquid in a finishing treatment section having a gas inlet in fluid communication with a gas outlet of a finishing section of a urea production unit, wherein the finishing section is adapted to solidify urea liquid, and wherein said finishing treatment section is adapted to subject ammonia-containing off-gas of the finishing section to treatment with an acidic scrubbing liquid.

公开(公告)号：US10370326B2

公开(公告)日：2019-08-06

申请号：US15573452

申请日：2016-12-21

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa Puci ,  Joey Dobree

IPC: C07C273/16 ,  C07C273/04 ,  C05C1/00 ,  B01D53/00 ,  B01D53/14 ,  C01C1/18

Abstract: The invention relates to a process for the production of urea ammonium nitrate, a system and a method of modifying a plant. The process comprises subjecting ammonia-containing off-gas resulting from the production of ammonium nitrate (AN off-gas) to condensation under acidic conditions so as to form an acidic a acidic scrubbing liquid in a finishing treatment section having a gas inlet in fluid communication with a gas outlet of a finishing section of a urea production unit, wherein the finishing section is adapted to solidify urea liquid, and wherein said finishing treatment section is adapted to subject ammonia-containing off-gas of the finishing section to treatment with an acidic scrubbing liquid.