AR247372A1 - Procedimiento para purificar el agua efluyente de las instalaciones para fabricar urea. - Google Patents

Procedimiento para purificar el agua efluyente de las instalaciones para fabricar urea.

Info

Publication number
AR247372A1
AR247372A1 AR90317876A AR31787690A AR247372A1 AR 247372 A1 AR247372 A1 AR 247372A1 AR 90317876 A AR90317876 A AR 90317876A AR 31787690 A AR31787690 A AR 31787690A AR 247372 A1 AR247372 A1 AR 247372A1
Authority
AR
Argentina
Prior art keywords
urea
stage
water
steam
production
Prior art date
Application number
AR90317876A
Other languages
English (en)
Original Assignee
Snam Progetti
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11186227&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR247372(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Snam Progetti filed Critical Snam Progetti
Application granted granted Critical
Publication of AR247372A1 publication Critical patent/AR247372A1/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/903—Nitrogenous

Abstract

PROCEDIMIENTO DE PURIFICACION EXTREMA DEL AGUA DE REFLUJO PRODUCIDA EN LAS INSTALACIONES PARA LA PRODUCCION DE UREA, QUE CONTIENEN COMO CONTAMINANTES AMONIACO, ANHIDRIDO CARBONICO Y UREA, ESTA PURIFICACION SE REALIZA POR HIDROLISIS Y EXHAUSTACION, PARA OBTENER AGUA TRATADA CON UN CONTENIDO DE AMONIACO Y UREA DE 10 A 0,4PPM, ESA PURIFICACION SE REALIZA EN TRES ETAPAS SUCESIVAS, UNA PRIMERA ETAPA DE EXHAUSTACION (STRIPPING) CON VAPOR DEL AGUA QUE SE VA A TRATAR, PARA LIBERAR LOS COMPONENTES CONTAMINANTES VOLATILES Y RECICLANDOLOS A LA INSTALACION DE PRODUCCION DE UREA EN FASE LIQUIDA O DE VAPOR; UNA SEGUNDA ETAPA DE HIDROLISIS DEL AGUA OBTENIDA EN LA ETAPA PRECEDENTE, PARA DESCOMPONER LOS COMPONENTES NO VOLATILES ESTO ES UREA Y BIURETO, ESTA DESCOMPOSICION SE REALIZA A 20-40 ATMOSFERAS RELATIVAS, A 200 240*C Y CON TIEMPOS DE PERMANENCIA DE 20-40 MINUTOS, EN ZONAS SUCESIVAS RECORRIDAS CON UN FLUJO DE EMBOLO, EN CADA UNA DE LAS CUALES SE LIBERA UNA FASE DE VAPOR EN QUE SE REUNE A LOSÑ VAPORES OBTENIDOS EN LAS ETAPAS DE EXHAUSTACION QUE DESPUES SE RECICLAN A LA PRODUCCION DE UREA; LA TERCERA ETAPA EN LA CUAL EL AGUA SOMETIDA A LA HIDROLISIS SE EXHAUSTA ULTERIORMENTE CON VAPOR, LAS ETAPAS DE EXHAUSTACION SE CONDUCEN A PRESIONES DE 1,5 - 4 ATM. RELATIVOS Y TEMPERATURA DE 128- 150*C.
AR90317876A 1989-09-15 1990-09-14 Procedimiento para purificar el agua efluyente de las instalaciones para fabricar urea. AR247372A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8921742A IT1232670B (it) 1989-09-15 1989-09-15 Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.

Publications (1)

Publication Number Publication Date
AR247372A1 true AR247372A1 (es) 1994-12-29

Family

ID=11186227

Family Applications (1)

Application Number Title Priority Date Filing Date
AR90317876A AR247372A1 (es) 1989-09-15 1990-09-14 Procedimiento para purificar el agua efluyente de las instalaciones para fabricar urea.

Country Status (14)

Country Link
US (1) US5096599A (es)
EP (1) EP0417829B2 (es)
CN (1) CN1075793C (es)
AR (1) AR247372A1 (es)
AT (1) ATE88985T1 (es)
CA (1) CA2023415C (es)
DE (1) DE69001530T3 (es)
DK (1) DK0417829T4 (es)
ES (1) ES2055305T5 (es)
GR (1) GR3021676T3 (es)
IT (1) IT1232670B (es)
MX (1) MX171141B (es)
PL (1) PL166456B1 (es)
RU (1) RU2052390C1 (es)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221486A (en) * 1991-04-12 1993-06-22 Battelle Memorial Institute Aqueous phase removal of nitrogen from nitrogen compounds
US5223238A (en) * 1992-01-16 1993-06-29 The M. W. Kellogg Company Method for treating ammonia and urea condensates
US5433868A (en) * 1993-09-09 1995-07-18 Battelle Memorial Institute Sewage treatment method
US5772968A (en) * 1996-07-03 1998-06-30 Sunrise, Inc. Apparatus and method for hydrolyzing keratinaceous material
US6077491A (en) 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
CN1072190C (zh) * 1998-08-26 2001-10-03 巴陵石化岳阳石油化工总厂 合成烷基锂化合物的含锂废液处理方法
US6093380A (en) * 1998-10-16 2000-07-25 Siirtec Nigi, S.P.A. Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US6716360B2 (en) * 2002-04-16 2004-04-06 Eau-Viron Incorporated Method and apparatus for treating waste streams
DE10229103A1 (de) * 2002-06-25 2004-01-15 Agrolinz Melamin Gmbh Vorrichtung und Verfahren zur thermischen Wasseraufbereitung
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
CN100400430C (zh) * 2006-05-18 2008-07-09 刘国胜 尿素工艺冷凝液节能净化回收工艺
US20080053913A1 (en) * 2006-09-06 2008-03-06 Fassbender Alexander G Nutrient recovery process
US20080053909A1 (en) * 2006-09-06 2008-03-06 Fassbender Alexander G Ammonia recovery process
US20080156726A1 (en) * 2006-09-06 2008-07-03 Fassbender Alexander G Integrating recycle stream ammonia treatment with biological nutrient removal
US7736508B2 (en) * 2006-09-18 2010-06-15 Christopher A. Limcaco System and method for biological wastewater treatment and for using the byproduct thereof
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US8048202B2 (en) * 2007-12-12 2011-11-01 Kellogg Brown & Root Llc Method for treatment of process waters using steam
EP2107108A1 (en) * 2008-03-31 2009-10-07 KRÜGER Off-Shore A/S An apparatus and a method for continuous thermal hydrolysis of biological material
US8398945B2 (en) * 2008-12-12 2013-03-19 Thyssenkrupp Uhde Gmbh Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea
DE102009025135A1 (de) * 2009-06-17 2010-12-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Vorrichtung zur Verdampfung einer Harnstoff-Wasser-Lösung
EP2386346A1 (en) 2010-05-11 2011-11-16 Stamicarbon B.V. Process for the reduction of ammonia emissions in a urea manufacturing process
EP2402308A1 (en) * 2010-06-24 2012-01-04 DSM IP Assets B.V. Urea plant
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
JP6634342B2 (ja) * 2016-05-24 2020-01-22 東洋エンジニアリング株式会社 尿素水溶液の処理方法および装置
EP3782979A1 (en) * 2019-08-20 2021-02-24 Yara International ASA Preparation of urea solution and facility to do so
CN112495323B (zh) * 2020-11-27 2021-11-09 昱创(天津)化工科技有限公司 用于co2气提尿素生产的中压解吸水解塔及节能提产方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
IT1068268B (it) * 1976-09-09 1985-03-21 Snam Progetti Procedimento per la produzione di urea e purificazione delle acque
US4341640A (en) * 1976-09-27 1982-07-27 Standard Oil Company Urea hydrolysis
US4098579A (en) * 1977-03-03 1978-07-04 Instytut Nawozow Sztucznych Zjednoczenie "Petrochemia" Installation for conducting a synthesis reaction of urea
US4087513A (en) * 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams
US4220635A (en) * 1978-03-20 1980-09-02 Olin Corporation Catalytic method for hydrolyzing urea
NL7903623A (nl) * 1979-05-09 1980-11-11 Stamicarbon Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
JPS5750954A (en) * 1980-09-12 1982-03-25 Mitsui Toatsu Chem Inc Synthesis of urea
NL8006477A (nl) * 1980-11-28 1982-06-16 Unie Van Kunstmestfab Bv Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossing.
NL8100989A (nl) * 1981-02-28 1982-09-16 Unie Van Kunstmestfab Bv Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossingen.
US4552979A (en) * 1984-08-27 1985-11-12 James Chemical Engineering Inc. Process for treatment of urea plant process condensate

Also Published As

Publication number Publication date
IT1232670B (it) 1992-03-02
DE69001530T3 (de) 1997-07-10
DK0417829T4 (da) 1996-11-25
CA2023415A1 (en) 1991-03-16
EP0417829A1 (en) 1991-03-20
DE69001530T2 (de) 1993-10-07
MX171141B (es) 1993-10-04
IT8921742A0 (it) 1989-09-15
US5096599A (en) 1992-03-17
ATE88985T1 (de) 1993-05-15
PL166456B1 (pl) 1995-05-31
CN1075793C (zh) 2001-12-05
ES2055305T3 (es) 1994-08-16
CA2023415C (en) 2002-05-14
CN1050171A (zh) 1991-03-27
ES2055305T5 (es) 1996-12-16
EP0417829B1 (en) 1993-05-05
EP0417829B2 (en) 1996-11-06
DE69001530D1 (de) 1993-06-09
GR3021676T3 (en) 1997-02-28
RU2052390C1 (ru) 1996-01-20

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