ES2182019T3 - Proceso para preparar urea granular. - Google Patents
Proceso para preparar urea granular.Info
- Publication number
- ES2182019T3 ES2182019T3 ES97900462T ES97900462T ES2182019T3 ES 2182019 T3 ES2182019 T3 ES 2182019T3 ES 97900462 T ES97900462 T ES 97900462T ES 97900462 T ES97900462 T ES 97900462T ES 2182019 T3 ES2182019 T3 ES 2182019T3
- Authority
- ES
- Spain
- Prior art keywords
- urea
- solution
- procedure
- formaldehyde
- granular urea
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
-
- 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
-
- 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Glanulating (AREA)
- Fertilizers (AREA)
Abstract
LA PRESENTE INVENCION DESCRIBE UN PROCEDIMIENTO PARA PREPARAR UREA GRANULAR, QUE RESUELVE EL PROBLEMA DE ELIMINAR LA HUMEDAD EN UN PROCEDIMIENTO EN TORRE PARA LA FORMACION DE GRANULOS, Y EL PROBLEMA DE CONCENTRAR EL FORMALDEHIDO DILUIDO EN LA GRANULACION MEDIANTE UN PROCEDIMIENTO DE LECHO FLUIDO BORBOTANTE CUANDO LA UREA SE GRANULA EN PRESENCIA DE FORMALDEHIDO. ES DECIR, LA INVENCION SUMINISTRA UN PROCEDIMIENTO PARA PREPARAR UREA GRANULAR A PARTIR DE GOTAS LIQUIDAS O DE GOTAS PULVERIZADAS DE UNA SOLUCION DE UREA, EN EL CUAL LA SOLUCION DE UREA SE DIVIDE EN DOS PORCIONES, UNA SOLUCION DE UREA A Y UNA SOLUCION DE UREA B, Y SE PREPARA UNA SOLUCION DE UREA MEZCLANDO UNA SOLUCION DE FORMALDEHIDO ACUOSO CON LA SOLUCION DE UREA A, CONCENTRANDO LA ANTERIOR SOLUCION MEZCLADA Y LUEGO MEZCLANDOLA CON LA SOLUCION DE UREA B.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01654196A JP3667418B2 (ja) | 1996-02-01 | 1996-02-01 | 粒状尿素の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2182019T3 true ES2182019T3 (es) | 2003-03-01 |
Family
ID=11919135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES97900462T Expired - Lifetime ES2182019T3 (es) | 1996-02-01 | 1997-01-21 | Proceso para preparar urea granular. |
Country Status (15)
Country | Link |
---|---|
US (1) | US5965071A (es) |
EP (1) | EP0819106B1 (es) |
JP (1) | JP3667418B2 (es) |
CN (1) | CN1098234C (es) |
AR (1) | AR005588A1 (es) |
AU (1) | AU705068B2 (es) |
BR (1) | BR9702047A (es) |
CA (1) | CA2215596C (es) |
DE (1) | DE69716177T2 (es) |
ES (1) | ES2182019T3 (es) |
ID (1) | ID15864A (es) |
LT (1) | LT4340B (es) |
RU (1) | RU2134251C1 (es) |
SA (1) | SA97170602B1 (es) |
WO (1) | WO1997028100A1 (es) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004005907B4 (de) * | 2004-02-05 | 2006-01-05 | Uhde Gmbh | Anlage zur Herstellung von biuretarmem harnstoffhaltigem Düngemittelgranulat |
NL1025805C2 (nl) * | 2004-03-25 | 2005-09-27 | Dsm Ip Assets Bv | Werkwijze voor de granulatie van ureum. |
US7862642B2 (en) * | 2006-12-14 | 2011-01-04 | Georgia-Pacific Chemicals Llc | Extended-release urea-based granular fertilizer |
EP2489429A1 (en) * | 2011-02-21 | 2012-08-22 | Urea Casale S.A. | Fluid bed granulation of urea and related apparatus |
CN102976499B (zh) * | 2012-12-03 | 2013-12-04 | 北京师范大学 | 同时缓释氮和吸附-生物降解石油烃的复合板制备方法 |
EP2745901A1 (en) * | 2012-12-19 | 2014-06-25 | Urea Casale SA | Method for transforming a prilling tower, in particular in a plant for the synthesis of urea |
CN103011982B (zh) * | 2012-12-29 | 2014-12-31 | 金正大生态工程集团股份有限公司 | 一种脲醛缓释复合肥料的工业化生产方法和装置 |
GB201502894D0 (en) | 2015-02-20 | 2015-04-08 | Johnson Matthey Plc | Process |
GB201502893D0 (en) | 2015-02-20 | 2015-04-08 | Johnson Matthey Plc | Process |
WO2016159336A1 (ja) * | 2015-04-01 | 2016-10-06 | 東洋エンジニアリング株式会社 | 尿素製造方法 |
CN105461361B (zh) * | 2015-12-25 | 2019-05-14 | 北方华锦化学工业股份有限公司 | 多路蒸发尿素造粒系统 |
DE102017108842A1 (de) * | 2017-04-25 | 2018-10-25 | Thyssenkrupp Ag | Verfahren und Vorrichtung zur Herstellung von Harnstoff |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3112313A (en) | 1963-11-26 | Process for the production thereof | ||
US3067177A (en) * | 1957-10-30 | 1962-12-04 | Montedison Spa | Process for producing concentrated urea-formaldehyde solutions by absorbing gaseous formaldehyde in aqueous urea solutions |
GB926781A (en) * | 1959-06-02 | 1963-05-22 | Vulcan Cincinnati Inc | Dehydration of urea melts |
US3112343A (en) * | 1959-08-20 | 1963-11-26 | Chemie Linz Ag | Free-flowing, storage stable granular or pelletized urea |
US3059280A (en) * | 1960-10-27 | 1962-10-23 | Grace W R & Co | Urea prilling |
US3130225A (en) * | 1962-02-12 | 1964-04-21 | Pullman Inc | Urea production |
US3378584A (en) * | 1963-07-05 | 1968-04-16 | Grace W R & Co | Process for reducing the caking tendency of crystalline urea |
US3686373A (en) * | 1970-02-09 | 1972-08-22 | George T Griesheimer | Urea-prill anti-caking process |
US3970625A (en) * | 1973-03-14 | 1976-07-20 | Allied Chemical Corporation | Production of urea-formaldehyde concentrates |
JPS5034536A (es) | 1973-07-27 | 1975-04-02 | ||
IE46841B1 (en) * | 1977-06-09 | 1983-10-05 | Azote Sa Cie Neerlandaise | Improvements in or relating to urea granulation |
GB1581761A (en) * | 1977-06-09 | 1980-12-17 | Azote Sa Cie Neerlandaise | Urea granulation |
NO148744C (no) * | 1977-09-19 | 1983-12-07 | Norsk Hydro As | Fremgangsmaate til fremstilling av urea med hoey mekanisk styrke |
DE3013616C2 (de) * | 1979-05-11 | 1984-08-02 | VEB Stickstoffwerk Piesteritz, DDR 4602 Wittenberg-Lutherstadt-Piesteritz | Verfahren zur Behandlung von Harnstoff sowie ammonium- und nitrathaltigen Düngemitteln |
JPS6058193B2 (ja) * | 1980-01-31 | 1985-12-18 | 宇部興産株式会社 | 尿素の流動造粒方法 |
NL8001876A (nl) * | 1980-03-29 | 1981-11-02 | Unie Van Kunstmestfab Bv | Werkwijze voor het maken van ureumprils en ureumprils verkregen met deze werkwijze. |
JPS61216725A (ja) * | 1985-03-20 | 1986-09-26 | Mitsui Toatsu Chem Inc | 尿素の造粒方法 |
JPH01286985A (ja) * | 1988-05-11 | 1989-11-17 | Mitsui Toatsu Chem Inc | 緩効性窒素肥料の製造方法 |
JPH063729A (ja) | 1992-06-18 | 1994-01-14 | Nikon Corp | 縦走りフォーカルプレーンシャッタ用遮光羽根の製造方 法 |
JPH06305869A (ja) * | 1993-04-28 | 1994-11-01 | Mitsui Toatsu Chem Inc | 緩効性窒素肥料の製造法 |
-
1996
- 1996-02-01 JP JP01654196A patent/JP3667418B2/ja not_active Expired - Lifetime
-
1997
- 1997-01-21 RU RU97118419A patent/RU2134251C1/ru active
- 1997-01-21 US US08/913,871 patent/US5965071A/en not_active Expired - Lifetime
- 1997-01-21 DE DE69716177T patent/DE69716177T2/de not_active Revoked
- 1997-01-21 WO PCT/JP1997/000108 patent/WO1997028100A1/en not_active Application Discontinuation
- 1997-01-21 BR BR9702047A patent/BR9702047A/pt not_active IP Right Cessation
- 1997-01-21 CN CN97190048A patent/CN1098234C/zh not_active Expired - Lifetime
- 1997-01-21 ES ES97900462T patent/ES2182019T3/es not_active Expired - Lifetime
- 1997-01-21 EP EP97900462A patent/EP0819106B1/en not_active Revoked
- 1997-01-21 AU AU20172/97A patent/AU705068B2/en not_active Ceased
- 1997-01-21 CA CA002215596A patent/CA2215596C/en not_active Expired - Lifetime
- 1997-01-29 AR ARP970100351A patent/AR005588A1/es active IP Right Grant
- 1997-01-31 ID IDP970309A patent/ID15864A/id unknown
- 1997-02-01 SA SA97170602A patent/SA97170602B1/ar unknown
- 1997-09-30 LT LT97-156A patent/LT4340B/lt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0819106B1 (en) | 2002-10-09 |
CN1178516A (zh) | 1998-04-08 |
AU705068B2 (en) | 1999-05-13 |
CA2215596A1 (en) | 1997-08-07 |
RU2134251C1 (ru) | 1999-08-10 |
LT4340B (lt) | 1998-05-25 |
ID15864A (id) | 1997-08-14 |
CA2215596C (en) | 2001-10-16 |
JP3667418B2 (ja) | 2005-07-06 |
US5965071A (en) | 1999-10-12 |
LT97156A (en) | 1998-02-25 |
WO1997028100A1 (en) | 1997-08-07 |
AR005588A1 (es) | 1999-06-23 |
CN1098234C (zh) | 2003-01-08 |
DE69716177T2 (de) | 2003-05-28 |
AU2017297A (en) | 1997-08-22 |
SA97170602B1 (ar) | 2006-08-20 |
JPH09208552A (ja) | 1997-08-12 |
DE69716177D1 (de) | 2002-11-14 |
EP0819106A1 (en) | 1998-01-21 |
BR9702047A (pt) | 1998-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2182019T3 (es) | Proceso para preparar urea granular. | |
KR950702864A (ko) | 우레아 과립제의 제조 방법(process for the production of urea granules) | |
JPH06122581A (ja) | 植物用カルシウム付与剤 | |
DK564589D0 (da) | Farmaceutisk ionbytterharpikssammensaetning | |
FI864127A (fi) | Foerfarande foer framstaellning av goedslingsgranuler som innehaoller urea och ammoniumsulfat. | |
FR2795961B1 (fr) | Composition pharmaceutique contenant du fenofibrate micronise, un tensioactif et un derive cellulosique liant et procede de preparation | |
YU49471B (sh) | Uređaj za proizvodnju sulfoureičnog reagensa koji se koristi za dobijanje prirodnog fosfata u pogonu za proizvodnju azotnofosfatnih đubriva | |
ES2132685T3 (es) | Procedimiento para la obtencion de acido 2-hidroxi-4-metiltiobutirico (mha), mha y su utilizacion. | |
DK0904251T3 (da) | Fremgangsmåde til fremstilling af højrene kaliumslate | |
ES2182197T3 (es) | Procedimiento para la preparacion de granulados de fertilizantes de urea que contienen diciandiamida. | |
CN105801288A (zh) | 一种含脲甲醛缓释药肥及其制备方法 | |
DK678088A (da) | Fremgangsmaade til tilvejebringelse af en styret opdeling af vaeskestoevsproejt | |
ES2196689T3 (es) | Granulado efervescente con efervescencia retardada. | |
SE9803478L (sv) | Förfarande för framställning av näringstillskott för djur | |
CN106083284A (zh) | 一种含硫锌磷酸一铵增效肥料及其生产方法 | |
BG105713A (en) | Method for preparing an effervescent granulate comprising iron gluconate, granulate thus obtained and tablets | |
CZ22696A3 (cs) | Kapalné organominerální hnojivo na bázi melasových výpadků s obsahem hořčíku | |
CN109836202A (zh) | 一种苗木培养剂 | |
CN106588353A (zh) | 一种液氨复合肥 | |
CN110483122A (zh) | 一种液氨复合肥 | |
CU22024A1 (es) | Proceso para la producción de un forraje enriquecido en proteína a partir de la fermentación en estado sólido de la cana de azúcar | |
CN107473858A (zh) | 一种液氨复合肥 | |
PE55894A1 (es) | Procedimiento para obtener a partir de la turba una preparacion con efecto inmunomodulante y que estimula la formacion de citoquina | |
CN105036962A (zh) | 一种无公害多效肥料 | |
CZ15096A3 (cs) | Kapalné organominerální hnojivo na bázi melasových výpalků s humáty |