LT4340B - Granuliuoto karbamido paruošimo būdas - Google Patents

Granuliuoto karbamido paruošimo būdas Download PDF

Info

Publication number: LT4340B
Authority: LT; Lithuania
Prior art keywords: urea; solution; formaldehyde; urea solution; aqueous
Prior art date: 1996-02-01

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.)

1996-02-01

Filing date

1997-09-30

Publication date

1998-05-25

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.

1997-09-30 Application filed by Toyo Engineering Corporation filed Critical Toyo Engineering Corporation

1998-02-25 Publication of LT97156A publication Critical patent/LT97156A/xx

1998-05-25 Publication of LT4340B publication Critical patent/LT4340B/lt

Links

XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 126
239000004202 carbamide Substances 0.000 title claims abstract description 125
238000004519 manufacturing process Methods 0.000 title claims abstract description 9
WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 157
239000000243 solution Substances 0.000 claims abstract description 66
238000000034 method Methods 0.000 claims abstract description 16
239000008098 formaldehyde solution Substances 0.000 claims abstract description 14
239000000203 mixture Substances 0.000 claims description 10
239000007864 aqueous solution Substances 0.000 claims description 9
238000005469 granulation Methods 0.000 abstract description 24
230000003179 granulation Effects 0.000 abstract description 24
239000011259 mixed solution Substances 0.000 abstract description 15
239000007788 liquid Substances 0.000 abstract description 5
239000008187 granular material Substances 0.000 description 15
238000006243 chemical reaction Methods 0.000 description 14
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
229920000642 polymer Polymers 0.000 description 9
229910021529 ammonia Inorganic materials 0.000 description 6
230000015572 biosynthetic process Effects 0.000 description 6
238000006116 polymerization reaction Methods 0.000 description 6
238000010438 heat treatment Methods 0.000 description 5
WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 4
239000000047 product Substances 0.000 description 4
238000002360 preparation method Methods 0.000 description 3
239000000654 additive Substances 0.000 description 2
230000000996 additive effect Effects 0.000 description 2
OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 2
239000006227 byproduct Substances 0.000 description 2
239000007795 chemical reaction product Substances 0.000 description 2
230000015271 coagulation Effects 0.000 description 2
238000005345 coagulation Methods 0.000 description 2
239000000498 cooling water Substances 0.000 description 2
238000001704 evaporation Methods 0.000 description 2
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
235000011114 ammonium hydroxide Nutrition 0.000 description 1
230000000052 comparative effect Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
239000010419 fine particle Substances 0.000 description 1
239000012530 fluid Substances 0.000 description 1
CUHVTYCUTYWQOR-UHFFFAOYSA-N formaldehyde Chemical compound O=C.O=C CUHVTYCUTYWQOR-UHFFFAOYSA-N 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
239000002245 particle Substances 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
230000000630 rising effect Effects 0.000 description 1

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

1996
- 1996-02-01 JP JP01654196A patent/JP3667418B2/ja not_active Expired - Lifetime
1997
- 1997-01-21 BR BR9702047A patent/BR9702047A/pt not_active IP Right Cessation
- 1997-01-21 US US08/913,871 patent/US5965071A/en not_active Expired - Lifetime
- 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 CA CA002215596A patent/CA2215596C/en not_active Expired - Lifetime
- 1997-01-21 RU RU97118419A patent/RU2134251C1/ru active
- 1997-01-21 DE DE69716177T patent/DE69716177T2/de not_active Revoked
- 1997-01-21 AU AU20172/97A patent/AU705068B2/en not_active Ceased
- 1997-01-21 EP EP97900462A patent/EP0819106B1/en not_active Revoked
- 1997-01-21 WO PCT/JP1997/000108 patent/WO1997028100A1/en not_active Ceased
- 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

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

Legal Events

Date	Code	Title	Description
2002-09-25	MM9A	Lapsed patents	Effective date: 20020121

Publication	Publication Date	Title
LT4340B (lt)	1998-05-25	Granuliuoto karbamido paruošimo būdas
CA2407843C (en)	2009-08-11	Method for producing calcium nitrate granules
US9890115B2 (en)	2018-02-13	Urea finishing method
EP3169419B1 (en)	2020-04-22	Method of making a urea product
AU2001274357A1 (en)	2002-01-31	Method for producing calcium nitrate granules
DK166672B1 (da)	1993-06-28	Fremgangsmaade til fremstilling af calcium-urinstof-nitrat
RU2219146C1 (ru)	2003-12-20	Способ получения азотно-сульфатного удобрения и азотно-сульфатное удобрение
US4237106A (en)	1980-12-02	Production of solid ammonium polyphosphate by controlled cooling
US5686554A (en)	1997-11-11	Process for the manufacture of paraformaldehyde
EP0144964B1 (en)	1988-02-17	Process for concentrating an already concentrated urea solution to form a practically anhydrous melt
WO2025040773A1 (en)	2025-02-27	Granulation based method for producing granules comprising urea, biuret, and n-containing compounds produced during a urea condensation process
PL133071B1 (en)	1985-05-31	Method of granulating materials in particular fertilizers
JPS61127690A (ja)	1986-06-14	緩効性窒素肥料の製造方法