公开(公告)号：US20190210963A1

公开(公告)日：2019-07-11

申请号：US15735153

申请日：2017-04-28

Applicant: STAMICARBON B.V.

Inventor： Eelco MOSTERT

IPC: C07C273/04 ,  C07C273/16

CPC classification number: C07C273/04 ,  B01B1/005 ,  C07C273/16 ,  Y02P20/582

Abstract: Disclosed is a novel method of controlling the formation of biuret in urea production. This is accomplished by reducing or preventing the formation of biuret in a concentration section, particularly in one or more concentrators or evaporators. The method comprises controlling the residence time of a urea aqueous stream treated in such concentration section in a manner independently of the volume flow per time interval of said stream into said concentration section. The residence time can be controlled, e.g., by providing the concentration section with an adjustable volume or by adding a gas to the urea stream to be treated. A combination of such measures can also be applied.

公开(公告)号：US10196348B2

公开(公告)日：2019-02-05

申请号：US15325050

申请日：2015-04-21

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

Inventor： Gaetano Iaquaniello ,  Joey Dobree

IPC: C07C273/04 ,  C01B3/48 ,  C01B3/38 ,  B01J19/24 ,  C01C1/04 ,  C01B32/50

Abstract: The present invention provides a method for increasing the capacity of a urea production complex, the method comprising a step of adding to an existing urea production complex a CO2 production unit, which unit employs a CO2 production method comprising: i) subjecting a hydrocarbon feed to short contact time catalytic partial oxidation (SCT-CPO) to produce a first gas mixture comprising H2, CO and CO2, ii) subjecting said first gas mixture to a water gas shift reaction yielding a second gas mixture, iii) separating CO2 from said second gas mixture yielding a purified CO2 stream and a hydrogen containing stream and subsequently iv) reacting said purified CO2 stream with ammonia from the ammonia production unit to produce urea. The invention also provides a urea production complex realized by the application of this method and a urea production method.

公开(公告)号：US10046967B2

公开(公告)日：2018-08-14

申请号：US14441162

申请日：2013-11-08

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: C01B3/04 ,  B01J27/051 ,  B01J21/04

Abstract: Disclosed is a method for the production of hydrogen from a H2S-containing gas stream also containing ammonia, comprising subjecting both gas stream to catalytic oxidative cracking of both the H2S and the NH3, so as to form H2, S2 and N2. In this method, preferably, an additional amount of oxygen is added as compared to the amount used for H2S catalytic oxidative cracking. Also, preferably, the contact time of the gas stream with the catalyst is increased. The catalyst preferably is provided as a single bed, and then preferably comprises iron and molybdenum supported by a carrier comprising aluminum. The preferred carrier is alumina. The iron and molybdenum preferably are in the form of sulfides.

公开(公告)号：US20180071653A1

公开(公告)日：2018-03-15

申请号：US15560460

申请日：2016-03-29

Applicant: Stamicarbon B.V.

Inventor： Joey DOBREE ,  Johannes Henricus MENNEN

IPC: B01D3/00 ,  C01C1/18 ,  C07C273/04 ,  C07C273/10 ,  C07C275/02 ,  C05G3/00 ,  C05C1/00 ,  C05C9/00 ,  B01J19/00

CPC classification number: B01D3/009 ,  B01D3/00 ,  B01J19/002 ,  C01C1/185 ,  C05C1/00 ,  C05C9/00 ,  C05G3/0076 ,  C07C273/02 ,  C07C273/04 ,  C07C273/10 ,  C07C275/02 ,  Y02P20/127 ,  C05C9/005

Abstract: Disclosed is a method for the integrated production of two different urea products. One is an aqueous urea solution suitable for use in NOx abatement (generally indicated as Diesel Exhaust Fluid—DEF). The other is a solution used as a fertilizer, viz. Urea Ammonium Nitrate (UAN). The production of DEF and UAN are integrated as follows: ammonia recovered from the production of urea is used as a feed to the production of ammonium nitrate. At least part of an aqueous urea stream from urea prodution, is mixed with ammonium nitrate so as to obtain UAN.

公开(公告)号：US20170362188A1

公开(公告)日：2017-12-21

申请号：US15692715

申请日：2017-08-31

Applicant: Stamicarbon B.V.

Inventor： Johannes Henricus MENNEN

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

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.

公开(公告)号：US20170349542A1

公开(公告)日：2017-12-07

申请号：US15685308

申请日：2017-08-24

Applicant: Stamicarbon B.V.

Inventor： Johannes Henricus MENNEN ,  Barbara CUCCHIELLA

IPC: C07C273/04 ,  B01J19/24

CPC classification number: C07C273/04 ,  B01J19/24

Abstract: Disclosed is a method for the production of urea allowing a substantial reduction, even down to zero, of the continuous emission of ammonia conventionally resulting from such a process. According to a preferred embodiment of the invention, the urea-forming reaction from carbon dioxide and ammonia is conducted in a synthesis section that does not require passivation by oxygen. As a result of the absence of oxygen, a hydrogen-rich gas stream results from the synthesis section, that can be used as a fuel in an incinerator. In the incinerator, ammonia-comprising gas streams from the urea production process are combusted.

公开(公告)号：US20170320816A1

公开(公告)日：2017-11-09

申请号：US15495667

申请日：2017-04-24

Applicant: Stamicarbon B.V.

Inventor： Brian Sayre HIGGINS ,  John Marshall TATE, III ,  Robert Arthur YATES ,  Marcel Julien POMERLEAU ,  Jon Michael HEON ,  Wilfried Marc Renaat DIRKX ,  Juan Coloma GONZÁLEZ

IPC: C07C273/16 ,  B01D47/10 ,  B01D47/06 ,  B01D47/12 ,  B01D47/05

Abstract: Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 25 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m3/h)/(m3/h).

公开(公告)号：US20170175031A1

公开(公告)日：2017-06-22

申请号：US15327358

申请日：2015-05-11

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

Inventor： Cinzia CHIAPPE ,  Christian POMELLI ,  Andrea MEZZETTA ,  Barbara MASCIOCCHI ,  Alessio GENTILE

IPC: C11B1/10 ,  C11B1/04

CPC classification number: C11B1/10 ,  C11B1/04 ,  C12N1/06 ,  C12N1/12 ,  C12P7/6463

Abstract: In the present invention a method for treating algae is disclosed, which method comprises the steps of (a) providing an ionic liquid, which is a conjugate of an organic base with pKa at least 6 and an acid, (b) providing algae, (c) subjecting algae to cell lysis with the ionic liquid, whereby at least two phases are formed, including a hydrophobic phase and a hydrophilic phase, and (d) separating the hydrophobic phase containing lipids.

公开(公告)号：US09573118B2

公开(公告)日：2017-02-21

申请号：US14441155

申请日：2013-11-08

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: B01J27/051 ,  B01J35/08 ,  B01J37/08 ,  C01B3/04 ,  B01J37/20 ,  B01J37/02 ,  B01J23/881 ,  C01B17/04

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.

Abstract translation: 公开了一种适用于含H2S的气流的催化氧化裂解的催化剂，特别是在流还含有甲烷和/或氨的情况下。 催化剂包括由包含铝的载体负载的铁和钼。 载体优选为氧化铝。 铁和钼优选为硫化物的形式。 还公开了一种用于从含H 2 S的气流生产氢的方法，包括使用根据前述权利要求中任一项的催化剂使气流进行催化氧化裂化以形成H 2和S 2。

公开(公告)号：US20160318883A1

公开(公告)日：2016-11-03

申请号：US15106140

申请日：2014-12-16

Applicant: STAMICARBON B.V.

Inventor： Johannes Henricus MENNEN

IPC: C07D251/60 ,  B01J19/24

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.

Abstract translation: 公开了一种尿素和三聚氰胺的综合生产方法。 尿素生产区产生包含尿素，水和氨基甲酸铵的尿素合成流。 对该料流进行处理，优选包括汽提，以便将含水的尿素流与包含氨，二氧化碳和水的残留的解离的氨基甲酸酯蒸气分离。 将尿素进料到三聚氰胺合成区，并进行三聚氰胺形成条件，以形成包含二氧化碳和氨的三聚氰胺和废气。 解离的氨基甲酸盐蒸汽和三聚氰胺废气进行组合冷凝，以形成稀的三聚氰胺废气冷凝物。