公开(公告)号：US20210094822A1

公开(公告)日：2021-04-01

申请号：US16630423

申请日：2019-06-17

Applicant: Stamicarbon B.V. Acting Under the Name of MT Innovation Center

Inventor： Pierlorenzo CINOTTI ,  Michele COLOZZI ,  Simona CORTESE ,  Marino MICCIO ,  Emma PALO ,  Lucia BARBATO ,  Vincenzo PALMA ,  Daniela BARBA

IPC: C01B3/02 ,  B01J23/755 ,  B01D53/86 ,  B01J37/02 ,  B01J37/08 ,  C01B17/04 ,  B01D5/00

Abstract: Disclosed is a catalyst suitable for the catalytic oxidative cracking of a H2S-containing gas stream. The catalyst comprises at least one or more active metals selected from the group consisting of iron, cobalt, and nickel, supported by a carrier comprising ceria and alumina. The active metal is preferably in the form of its sulphide. Also disclosed is a method for the production of hydrogen from a H2S-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form H2 and S2, using a catalyst in accordance with any one of the composition claims.

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：US20190276392A1

公开(公告)日：2019-09-12

申请号：US16424346

申请日：2019-05-28

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa PUCI ,  Joey DOBREE

IPC: C07C273/04 ,  C07C273/16 ,  B01D53/14 ,  C05C1/00 ,  B01D53/00 ,  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 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：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.

公开(公告)号：US20190015811A1

公开(公告)日：2019-01-17

申请号：US15576214

申请日：2017-03-30

Applicant: STAMICARBON B.V.

Inventor： Juan COLOMA GONZÁLEZ ,  Luc Louis Maria DIELTJENS ,  Johannes Henricus MENNEN

IPC: B01J19/18 ,  B01D5/00 ,  C07C273/04 ,  C07C275/02

CPC classification number: B01J19/1837 ,  B01D3/06 ,  B01D3/14 ,  B01D5/006 ,  B01D2257/406 ,  B01D2257/504 ,  B01J19/24 ,  B01J2219/00006 ,  B01J2219/00018 ,  B01J2219/00024 ,  B01J2219/00038 ,  B01J2219/0004 ,  B01J2219/00051 ,  B01J2219/00087 ,  B01J2219/00092 ,  B01J2219/00162 ,  C07C273/04 ,  C07C275/02 ,  Y02P20/582

Abstract: Disclosed is a urea plant wherein, in deviation from conventional plants, a high-pressure synthesis section is operated with two different pressures. The synthesis section comprises a reactor, which is operated under a first high pressure. The synthesis section also comprises a stripper and a condenser, both operated at substantially the same second high pressure. In accordance with the invention, the first pressure is substantially higher than the second pressure. The disclosed plant particularly comprises a compression unit capable of converting a pressure difference into work, or more specifically, mechanical energy for compression. This compression unit is positioned between a liquid outlet of the condenser and a liquid inlet of the reactor, and in fluid communication therewith. In order to make use of a pressure drop (expansion as a result of a liquid being depressurized), said compression unit is configured to obtain compression energy from one or more events in the urea production process (i.e., at one or more points in the urea production plant), at which a loss of energy occurs, such as decompression of a high energy stream. Typically, the compression unit is thereby configured to utilize mechanical energy recovered from a decompression unit positioned downstream of the stripper and upstream of the recovery section.

公开(公告)号：US20180290937A1

公开(公告)日：2018-10-11

申请号：US15573448

申请日：2016-12-21

Applicant: Stamicarbon B.V.

Inventor： Giusy Elisa PUCI ,  Joey DOBREE

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

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：US09981253B2

公开(公告)日：2018-05-29

申请号：US15395093

申请日：2016-12-30

Applicant: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Inventor： Michele Colozzi ,  Lucia Barbato ,  Fabio Angelini ,  Emma Palo ,  Vincenzo Palma ,  Vincenzo Vaiano

IPC: B01J37/20 ,  B01J37/02 ,  B01J37/08 ,  C01B3/04 ,  C01B17/04 ,  B01J27/051

CPC classification number: B01J27/0515 ,  B01J23/881 ,  B01J35/08 ,  B01J37/0201 ,  B01J37/0207 ,  B01J37/0215 ,  B01J37/08 ,  B01J37/20 ,  C01B3/04 ,  C01B17/046 ,  C01B17/0465 ,  C01B17/0495 ,  Y02E60/364

Abstract: Disclosed is a catalyst suitable for the catalytic oxidative cracking of a H2S-containing gas stream, particularly in the event that the stream also contains methane and/or ammonia. The catalyst comprises iron and molybdenum supported by a carrier comprising aluminum. The carrier preferably is alumina. The iron and molybdenum preferably are in the form of sulphides. Also disclosed is a method for the production of hydrogen from a H2S-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form H2 and S2, using a catalyst in accordance with any one of the preceding claims.

公开(公告)号：US20180099926A1

公开(公告)日：2018-04-12

申请号：US15568795

申请日：2016-04-25

Applicant: Stamicarbon B.V.

Inventor： Johannes Henricus MENNEN

IPC: C07C273/12 ,  C07D251/60 ,  B01J19/24

CPC classification number: C07C273/12 ,  B01J19/245 ,  B01J2219/00024 ,  B01J2219/24 ,  C07D251/60 ,  C07D251/62 ,  Y02P20/125

Abstract: Disclosed is an integrated process for the production of urea and melamine, as well as a system for carrying out the process. The invention thereby pertains to an integrated process of the type wherein off-gas obtained from the production of melamine is entered into the process for the production of melamine, by condensation in the presence of water. A typical embodiment thereof is the condensation in the presence of an aqueous carbamate solution obtained from urea recovery. In accordance with the invention, said condensation takes place at a substantially lower pressure than the pressure at which the melamine off-gas is obtained. To this end, the pressure of the off-gas is reduced typically by 2-10 bar. In connection herewith, the system of the invention comprises a pressure reducing unit downstream of an outlet for the melamine off-gas, and upstream of a section for the condensation of the off-gas. The invention also includes a method for the modernization of an integrated system for the production of melamine and urea. This is accomplished by adding the aforementioned pressure reducing unit to a pre-existing system.

公开(公告)号：US20180023012A1

公开(公告)日：2018-01-25

申请号：US15677984

申请日：2017-08-15

Applicant: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Inventor： Michele COLOZZI ,  Emma PALO ,  Palma CONTALDO ,  Maria Rosaria PEPE ,  Vincenzo PALMA ,  Vincenzo VAIANO

IPC: C10L3/10 ,  B01J23/28 ,  B01J23/46 ,  B01J23/06 ,  B01J23/22 ,  B01J19/24 ,  B01J23/34 ,  C07C7/148 ,  B01D53/48 ,  B01J23/26 ,  B01J23/755 ,  B01J23/745 ,  B01D53/14

CPC classification number: C10L3/103 ,  B01D53/1456 ,  B01D53/48 ,  B01D2257/308 ,  B01J19/24 ,  B01J23/06 ,  B01J23/22 ,  B01J23/26 ,  B01J23/28 ,  B01J23/34 ,  B01J23/462 ,  B01J23/745 ,  B01J23/755 ,  B01J2219/24 ,  C07C7/14875 ,  C10L2290/06 ,  C10L2290/541

Abstract: Disclosed is method for removing carbonyl sulphide and/or carbon disulphide from a sour gas stream. The method comprises subjecting the gas stream to simultaneous contact with an absorption liquid, such as an aqueous amine solution, and with a catalyst suitable for hydrolyzing carbonyl sulphide and/or carbon disulphide. To this end, the invention also provides a reactor system wherein both an absorption liquid and a catalyst are present. In a preferred embodiment, the catalyst is a heterogeneous catalyst present on or in an absorption column, either coated on the trays of a column with trays, or contained in the packing of a packed column.

公开(公告)号：US09815800B2

公开(公告)日：2017-11-14

申请号：US15106140

申请日：2014-12-16

Applicant: Stamicarbon B.V.

Inventor： Johannes Henricus Mennen

IPC: C07D251/60 ,  C07D251/62 ,  C07C273/12 ,  B01J19/24 ,  B01J3/04 ,  B01J4/00 ,  B01J10/00

CPC classification number: C07D251/60 ,  B01J19/245 ,  B01J2219/00103 ,  B01J2219/24 ,  C07C273/12 ,  C07D251/62

Abstract: Disclosed is a process for the integrated production of urea and melamine. A urea production zone produces a urea synthesis stream comprising urea, water and ammonium carbamate. This stream is subjected to processing, preferably involving stripping, so as to separate an aqueous urea stream from residual dissociated carbamate vapor comprising ammonia, carbon dioxide, and water. The urea is fed to a melamine synthesis zone and subjected to melamine forming conditions so as to form melamine and off-gas comprising carbon dioxide and ammonia. The dissociated carbamate vapor and the melamine off-gas are subjected to combined condensation so as to form a dilute melamine off-gas condensate.