BR0104896A - Processo para a sìntese de uréia - Google Patents

Processo para a sìntese de uréia

Info

Publication number
BR0104896A
BR0104896A BR0104896-1A BR0104896A BR0104896A BR 0104896 A BR0104896 A BR 0104896A BR 0104896 A BR0104896 A BR 0104896A BR 0104896 A BR0104896 A BR 0104896A
Authority
BR
Brazil
Prior art keywords
high pressure
urea
gases
pressure decomposition
decomposition
Prior art date
Application number
BR0104896-1A
Other languages
English (en)
Other versions
BR0104896B1 (pt
Inventor
Kinichi Yoshida
Kenji Yoshimoto
Yasuhiko Kojima
Original Assignee
Toyo Engineering Corp
Pt Pupuk Sriwdjaja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Engineering Corp, Pt Pupuk Sriwdjaja filed Critical Toyo Engineering Corp
Publication of BR0104896A publication Critical patent/BR0104896A/pt
Publication of BR0104896B1 publication Critical patent/BR0104896B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSO PARA A SìNTESE DE URéIA". A invenção refere-se a um processo de síntese de uréia com economia de calor melhorada, no qual uma solução de síntese de uréia obtida removendo-se a maior parte do carbamato de amónio não reagido pela remoção com dióxido de carbono em uma pressao aproximadamente igual a pressão de síntese de uréia é submetida a uma decomposição de pressão baixa e elevada. A mistura de gás obtida a partir da decomposição de pressão elevada é condensada em pelo menos duas etapas. Os gases obtidos a partir da remoção da solução de síntese de uréia, após uma condensação inicial podem ser alternativamente enviados na coluna de decomposição de pressão elevada, dessa forma facilitando a decomposição do carbamato de amónio não reagido; podem ser misturados com gases inativos da coluna de decomposição de pressão elevada e enviados para um permutador indireto de calor para a concentração da solução de uréia aquosa e facilitação da condensação dos gases inativos da coluna de decomposição de pressão elevada; ou podem ser enviados para um condensador para a mistura de gás obtida a partir da decomposição de pressão elevada após ter sido submetida a permuta indireta de calor com a solução de uréia aquosa, dessa forma facilitando a outra condensação desses gases.
BRPI0104896-1A 2000-11-01 2001-10-31 processo para a sìntese de uréia. BR0104896B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000334395A JP4358428B2 (ja) 2000-11-01 2000-11-01 尿素製造方法

Publications (2)

Publication Number Publication Date
BR0104896A true BR0104896A (pt) 2003-04-08
BR0104896B1 BR0104896B1 (pt) 2011-12-13

Family

ID=18810318

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0104896-1A BR0104896B1 (pt) 2000-11-01 2001-10-31 processo para a sìntese de uréia.

Country Status (5)

Country Link
US (1) US6426434B1 (pt)
EP (1) EP1203765B1 (pt)
JP (1) JP4358428B2 (pt)
BR (1) BR0104896B1 (pt)
DE (1) DE60133445T2 (pt)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006050498A2 (en) 2004-11-02 2006-05-11 Archemix Corp. Stabilized aptamers to platelet derived growth factor and their use as oncology therapeutics
US8853376B2 (en) 2002-11-21 2014-10-07 Archemix Llc Stabilized aptamers to platelet derived growth factor and their use as oncology therapeutics
US20050124565A1 (en) * 2002-11-21 2005-06-09 Diener John L. Stabilized aptamers to platelet derived growth factor and their use as oncology therapeutics
US10100316B2 (en) * 2002-11-21 2018-10-16 Archemix Llc Aptamers comprising CPG motifs
US8039443B2 (en) * 2002-11-21 2011-10-18 Archemix Corporation Stabilized aptamers to platelet derived growth factor and their use as oncology therapeutics
EP1620547B1 (en) 2003-04-21 2014-06-18 Archemix LLC Stabilized aptamers to platelet derived growth factor and their use as oncology therapeutics
AU2005220910A1 (en) * 2004-03-05 2005-09-22 Archemix Corp. Aptamers to the human IL-12 cytokine family and their use as autoimmune disease therapeutics
US20060193821A1 (en) * 2004-03-05 2006-08-31 Diener John L Aptamers to the human IL-12 cytokine family and their use as autoimmune disease therapeutics
US7579450B2 (en) * 2004-04-26 2009-08-25 Archemix Corp. Nucleic acid ligands specific to immunoglobulin E and their use as atopic disease therapeutics
NL1028497C2 (nl) 2005-03-09 2006-09-12 Dsm Ip Assets Bv Werkwijze voor de bereiding van een ureum-bevattende waterige stroom.
EP1876171B1 (en) 2005-04-27 2011-12-07 Toyo Engineering Corporation Apparatus for urea synthesis and method of improving the same
WO2006118070A1 (ja) * 2005-04-27 2006-11-09 Toyo Engineering Corporation 尿素合成装置
RU2008103346A (ru) 2005-06-30 2009-08-10 Аркемикс Корп. (Us) Материалы и способы для получения полностью 2-модифицированных транскриптов нуклеиновых кислот
US8101385B2 (en) 2005-06-30 2012-01-24 Archemix Corp. Materials and methods for the generation of transcripts comprising modified nucleotides
EP1918273A1 (en) * 2006-11-04 2008-05-07 Urea Casale S.A. Process for urea production and related plant
ITMI20071029A1 (it) * 2007-05-22 2008-11-23 Snam Progetti Procedimento migliorato per la sintesi di urea
CN101397144B (zh) * 2007-10-22 2010-05-26 贵州赤天化股份有限公司 汽提法尿素装置高压调温水降温吸收氨的方法
US7687041B2 (en) * 2008-02-27 2010-03-30 Kellogg Brown & Root Llc Apparatus and methods for urea production
WO2010137454A1 (ja) * 2009-05-28 2010-12-02 東洋エンジニアリング株式会社 カルバミン酸アンモニウム水溶液の分析方法および未反応ガス吸収槽の運転方法
EP2505581A1 (en) * 2011-03-31 2012-10-03 Stamicarbon B.V. Zero emission urea process and plant
CN102816091A (zh) * 2011-06-10 2012-12-12 安徽省科捷再生能源利用有限公司 水溶液全循环尿素节能生产工艺
CN102786442B (zh) * 2012-08-16 2014-12-03 沧州大化股份有限公司 一种降低尿素装置合成进料系统能源消耗的方法
CN103408466A (zh) * 2013-07-09 2013-11-27 内蒙古鄂尔多斯联合化工有限公司 一种co2汽提法尿素生产中设备的防腐方法
CN108026033B (zh) 2015-09-08 2020-11-20 东洋工程株式会社 尿素制造方法以及尿素制造装置
EP3452212B1 (en) * 2016-05-03 2020-02-12 Stamicarbon B.V. Urea production with controlled biuret
IT201700121364A1 (it) * 2017-10-25 2019-04-25 Saipem Spa Apparato e metodo per il trattamento di vapori di processo provenienti da una sezione di concentrazione sottovuoto di un impianto urea
CN109879342B (zh) * 2019-04-23 2024-04-26 宁波马克斯迈环保科技有限公司 酸性水汽提塔馏出物热利用装置及方法
JP2023108791A (ja) * 2022-01-26 2023-08-07 東洋エンジニアリング株式会社 尿素合成方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5750954A (en) * 1980-09-12 1982-03-25 Mitsui Toatsu Chem Inc Synthesis of urea
NL8303888A (nl) * 1983-11-13 1985-06-03 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
JPS6215070A (ja) 1985-07-12 1987-01-23 Honda Motor Co Ltd クランクピン研削盤における位相割出し装置
NL8502227A (nl) 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
NL8502228A (nl) 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
JPS63112552A (ja) * 1986-10-30 1988-05-17 Toyo Eng Corp 未転化物の分離方法
NL8602770A (nl) * 1986-11-03 1988-06-01 Stamicarbon Werkwijze voor de bereiding van ureum.
NL8800259A (nl) 1988-02-04 1989-09-01 Stamicarbon Werkwijze voor het concentreren van een ureumoplossing.
JP3987607B2 (ja) 1996-10-07 2007-10-10 東洋エンジニアリング株式会社 改良された尿素合成方法および装置

Also Published As

Publication number Publication date
BR0104896B1 (pt) 2011-12-13
EP1203765A2 (en) 2002-05-08
US6426434B1 (en) 2002-07-30
JP2002145850A (ja) 2002-05-22
EP1203765B1 (en) 2008-04-02
JP4358428B2 (ja) 2009-11-04
DE60133445T2 (de) 2008-07-03
DE60133445D1 (de) 2008-05-15
US20020082451A1 (en) 2002-06-27
EP1203765A3 (en) 2003-10-08

Similar Documents

Publication Publication Date Title
BR0104896A (pt) Processo para a sìntese de uréia
BRPI0406427A (pt) Processo para a preparação de roflumilast
KR830007529A (ko) 요소 합성 방법
BR9912344A (pt) Processo para a preparação de ácido acrìlico.
BR9603885A (pt) Processo para trabalhar gases de reação durante a oxidação de hcl a cloro
KR850006923A (ko) 다니트로톨루엔의 제조방법
DE50113004D1 (de) Verfahren zur herstellung von salpetersäure
BRPI0513012A (pt) processo para o preparo de uréia
RU2011124501A (ru) Способ и установка для получения nh3 из содержащей nh3 и кислые газы смеси
KR870002057A (ko) 요소의 제조 방법
KR830007109A (ko) 요소, 암모니아, 이산화탄소를 함유한 묽은 수용액으로 부터요소, 암모니아, 이산화탄소를 제거하는 방법
BG45386A3 (bg) Метод за получаване на карбамид
BR0116336A (pt) Método para a concentração de ácido gasto
BR0202786A (pt) Processo de sìntese de uréia
BR0206518A (pt) Processo para a decomposição e remoção de um ou mais compostos contendo flúor
MY103165A (en) Method for partial condensation of hydrocarbon gas mixtures
TNSN87124A1 (fr) Procede de preparation d'uree
ES2075777T3 (es) Procedimiento para la obtencion de hidroxilamina a partir de gases de escape que contienen nox.
PT1135331E (pt) Processo para a obtencao de amoniaco a partir de aguas residuais que contem nh3 e gases acidos
BR8405765A (pt) Processo para preparacao de ureia e solucoes de ureia concentradas e ureia solida preparadas pelo mesmo
ZA864404B (en) Process of recovering ammonia from an aqueous effluent which contains nh3,co2 and h2s
BR0115964A (pt) Processo para a preparação de uréia
BR0007713A (pt) Processo para a secagem de cristais de proteìnas
GB1509950A (en) Urea manufacture
BR0213004A (pt) Processo para preparação de uréia

Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 13/12/2011, OBSERVADAS AS CONDICOES LEGAIS.

B25G Requested change of headquarter approved
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 13.12.2021