LT4340B - Granuliuoto karbamido paruošimo būdas - Google Patents

Granuliuoto karbamido paruošimo būdas Download PDF

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Publication number
LT4340B
LT4340B LT97-156A LT97156A LT4340B LT 4340 B LT4340 B LT 4340B LT 97156 A LT97156 A LT 97156A LT 4340 B LT4340 B LT 4340B
Authority
LT
Lithuania
Prior art keywords
urea
solution
formaldehyde
urea solution
aqueous
Prior art date
Application number
LT97-156A
Other languages
English (en)
Lithuanian (lt)
Other versions
LT97156A (en
Inventor
Hidetsugu Fujii
Haruyuki Morikawa
Original Assignee
Toyo Engineering Corporation
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=11919135&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=LT4340(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toyo Engineering Corporation filed Critical Toyo Engineering Corporation
Publication of LT97156A publication Critical patent/LT97156A/xx
Publication of LT4340B publication Critical patent/LT4340B/lt

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)
LT97-156A 1996-02-01 1997-09-30 Granuliuoto karbamido paruošimo būdas LT4340B (lt)

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 (2)

Publication Number Publication Date
LT97156A LT97156A (en) 1998-02-25
LT4340B true LT4340B (lt) 1998-05-25

Family

ID=11919135

Family Applications (1)

Application Number Title Priority Date Filing Date
LT97-156A LT4340B (lt) 1996-02-01 1997-09-30 Granuliuoto karbamido paruošimo būdas

Country Status (15)

Country Link
US (1) US5965071A (id)
EP (1) EP0819106B1 (id)
JP (1) JP3667418B2 (id)
CN (1) CN1098234C (id)
AR (1) AR005588A1 (id)
AU (1) AU705068B2 (id)
BR (1) BR9702047A (id)
CA (1) CA2215596C (id)
DE (1) DE69716177T2 (id)
ES (1) ES2182019T3 (id)
ID (1) ID15864A (id)
LT (1) LT4340B (id)
RU (1) RU2134251C1 (id)
SA (1) SA97170602B1 (id)
WO (1) WO1997028100A1 (id)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
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
GB201502893D0 (en) * 2015-02-20 2015-04-08 Johnson Matthey Plc Process
GB201502894D0 (en) 2015-02-20 2015-04-08 Johnson Matthey Plc Process
US10519103B2 (en) 2015-04-01 2019-12-31 Toyo Engineering Corporation Urea production method
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
CN117756573B (zh) * 2023-12-14 2026-01-02 宁波中科远东催化工程技术有限公司 一种大颗粒尿素的生产方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3112313A (en) 1963-11-26 Process for the production thereof
JPS5034536A (id) 1973-07-27 1975-04-02
US4219589A (en) 1977-06-09 1980-08-26 Compagnie Neerlandaise De L'azote Process for urea granulation
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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CA1101641A (en) * 1977-06-09 1981-05-26 Anton Niks Urea granulation
NO148744C (no) * 1977-09-19 1983-12-07 Norsk Hydro As Fremgangsmaate til fremstilling av urea med hoey mekanisk styrke
JPS6034517B2 (ja) * 1978-03-03 1985-08-09 宇部興産株式会社 流動層で尿素を造粒する方法
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
SU1507761A1 (ru) * 1987-03-19 1989-09-15 Предприятие П/Я А-1676 Способ получени гранулированного карбамида
JPH01286985A (ja) * 1988-05-11 1989-11-17 Mitsui Toatsu Chem Inc 緩効性窒素肥料の製造方法
JPH06305869A (ja) * 1993-04-28 1994-11-01 Mitsui Toatsu Chem Inc 緩効性窒素肥料の製造法

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
JPS5034536A (id) 1973-07-27 1975-04-02
US4219589A (en) 1977-06-09 1980-08-26 Compagnie Neerlandaise De L'azote Process for urea granulation
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

Also Published As

Publication number Publication date
CN1098234C (zh) 2003-01-08
SA97170602B1 (ar) 2006-08-20
JP3667418B2 (ja) 2005-07-06
RU2134251C1 (ru) 1999-08-10
WO1997028100A1 (en) 1997-08-07
DE69716177D1 (de) 2002-11-14
ID15864A (id) 1997-08-14
US5965071A (en) 1999-10-12
CA2215596A1 (en) 1997-08-07
DE69716177T2 (de) 2003-05-28
BR9702047A (pt) 1998-01-13
EP0819106B1 (en) 2002-10-09
AR005588A1 (es) 1999-06-23
LT97156A (en) 1998-02-25
AU705068B2 (en) 1999-05-13
ES2182019T3 (es) 2003-03-01
EP0819106A1 (en) 1998-01-21
CN1178516A (zh) 1998-04-08
CA2215596C (en) 2001-10-16
JPH09208552A (ja) 1997-08-12
AU2017297A (en) 1997-08-22

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