IL23062A - Method of preparing urea - Google Patents

Method of preparing urea

Info

Publication number: IL23062A
Authority: IL; Israel
Prior art keywords: ammonia; decomposer; carbon dioxide; evaporator; water
Prior art date: 1964-02-27

Application number

IL23062A

Other languages

English (en)

Original Assignee

Allied Chem

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.)

1964-02-27

Filing date

1965-02-25

Publication date

1968-08-22

1965-02-25 Application filed by Allied Chem filed Critical Allied Chem

1968-08-22 Publication of IL23062A publication Critical patent/IL23062A/en

Links

XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 95
239000004202 carbamide Substances 0.000 title claims description 52
238000000034 method Methods 0.000 title claims description 28
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 172
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 104
229910021529 ammonia Inorganic materials 0.000 claims description 78
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
239000001569 carbon dioxide Substances 0.000 claims description 52
229910002092 carbon dioxide Inorganic materials 0.000 claims description 52
229910001868 water Inorganic materials 0.000 claims description 49
239000007789 gas Substances 0.000 claims description 44
230000015572 biosynthetic process Effects 0.000 claims description 22
238000003786 synthesis reaction Methods 0.000 claims description 19
BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims description 18
KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 18
KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 16
OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 14
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
239000007791 liquid phase Substances 0.000 claims description 10
238000005201 scrubbing Methods 0.000 claims description 8
238000006243 chemical reaction Methods 0.000 claims description 6
238000001704 evaporation Methods 0.000 claims description 4
239000012071 phase Substances 0.000 claims description 3
238000010438 heat treatment Methods 0.000 claims description 2
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims 1
239000006096 absorbing agent Substances 0.000 description 30
239000007788 liquid Substances 0.000 description 26
238000000926 separation method Methods 0.000 description 15
238000000354 decomposition reaction Methods 0.000 description 12
239000000203 mixture Substances 0.000 description 8
238000011084 recovery Methods 0.000 description 6
229910052757 nitrogen Inorganic materials 0.000 description 5
HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
ZEYWAHILTZGZBH-UHFFFAOYSA-N azane;carbon dioxide Chemical compound N.O=C=O ZEYWAHILTZGZBH-UHFFFAOYSA-N 0.000 description 4
239000000498 cooling water Substances 0.000 description 4
239000000155 melt Substances 0.000 description 4
150000003672 ureas Chemical class 0.000 description 3
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
238000010521 absorption reaction Methods 0.000 description 2
238000012986 modification Methods 0.000 description 2
230000004048 modification Effects 0.000 description 2
PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
241001136792 Alle Species 0.000 description 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
208000036366 Sensation of pressure Diseases 0.000 description 1
230000002745 absorbent Effects 0.000 description 1
239000002250 absorbent Substances 0.000 description 1
239000003570 air Substances 0.000 description 1
BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
229910052921 ammonium sulfate Inorganic materials 0.000 description 1
235000011130 ammonium sulphate Nutrition 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
NMGFRGWSRHOQOP-UHFFFAOYSA-N carbamic acid;urea Chemical compound NC(N)=O.NC(O)=O NMGFRGWSRHOQOP-UHFFFAOYSA-N 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
230000015556 catabolic process Effects 0.000 description 1
238000003889 chemical engineering Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
238000006731 degradation reaction Methods 0.000 description 1
238000010494 dissociation reaction Methods 0.000 description 1
230000005593 dissociations Effects 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
239000003337 fertilizer Substances 0.000 description 1
239000003546 flue gas Substances 0.000 description 1
239000012530 fluid Substances 0.000 description 1
239000007792 gaseous phase Substances 0.000 description 1
230000010354 integration Effects 0.000 description 1
238000002844 melting Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
238000010992 reflux Methods 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
238000001577 simple distillation Methods 0.000 description 1
239000010409 thin film Substances 0.000 description 1
WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 1
238000005406 washing Methods 0.000 description 1

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)

IL23062A 1964-02-27 1965-02-25 Method of preparing urea IL23062A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US34776364A	1964-02-27	1964-02-27

Publications (1)

Publication Number	Publication Date
IL23062A true IL23062A (en)	1968-08-22

Family

ID=23365180

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IL23062A IL23062A (en)	1964-02-27	1965-02-25	Method of preparing urea

Country Status (9)

Country	Link
US (1)	US3471558A (de)
BR (1)	BR6567526D0 (de)
CH (1)	CH454115A (de)
DE (1)	DE1518468A1 (de)
ES (1)	ES309851A1 (de)
FR (1)	FR1425802A (de)
GB (1)	GB1103351A (de)
IL (1)	IL23062A (de)
NL (1)	NL6502543A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4919259B1 (de) *	1969-08-30	1974-05-16
NL7713190A (nl) *	1977-11-30	1979-06-01	Unie Van Kunstmestfab Bv	Werkwijze en inrichting voor het verwijderen van ammoniumcarbamaat uit een ureumsynthese- oplossing.
JPS5517346A (en) *	1978-07-24	1980-02-06	Toyo Eng Corp	Synthetic method of urea
US4500734A (en) *	1980-12-11	1985-02-19	Snamprogetti S.P.A.	Process for the production of urea
CN115353241B (zh) *	2021-07-07	2024-05-14	南京大学宜兴环保研究院	一种快速回收高浓度尿素生产废水中尿素的方法和系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2744133A (en) *	1953-04-24	1956-05-01	Inventa Ag	Process for the production of low-biuret content urea
US2916516A (en) *	1956-03-09	1959-12-08	Basf Ag	Evaporation of aqueous urea solutions

1964
- 1964-02-27 US US347763A patent/US3471558A/en not_active Expired - Lifetime
1965
- 1965-02-25 IL IL23062A patent/IL23062A/en unknown
- 1965-02-26 CH CH266465A patent/CH454115A/de unknown
- 1965-02-26 DE DE19651518468 patent/DE1518468A1/de active Pending
- 1965-02-26 ES ES0309851A patent/ES309851A1/es not_active Expired
- 1965-02-26 BR BR167526/65A patent/BR6567526D0/pt unknown
- 1965-02-26 GB GB8378/65A patent/GB1103351A/en not_active Expired
- 1965-02-27 FR FR7345A patent/FR1425802A/fr not_active Expired
- 1965-03-01 NL NL6502543A patent/NL6502543A/xx unknown

Also Published As

Publication number	Publication date
FR1425802A (fr)	1966-01-24
GB1103351A (en)	1968-02-14
NL6502543A (de)	1965-08-30
BR6567526D0 (pt)	1973-08-02
ES309851A1 (es)	1966-01-16
CH454115A (de)	1968-04-15
DE1518468A1 (de)	1969-08-07
US3471558A (en)	1969-10-07

Publication	Publication Date	Title
US4308385A (en)	1981-12-29	Process for purifying urea-containing waste water and process for preparing melamine
US4250160A (en)	1981-02-10	Production of ammonium sulfate
CA1201726A (en)	1986-03-11	Process for the removal of urea, ammonia and carbon dioxide from dilute aqueous solutions
SU833158A3 (ru)	1981-05-23	Способ синтеза мочевины и аммиака
US4801746A (en)	1989-01-31	Process for the preparation of urea
GB1505445A (en)	1978-03-30	Synthesis of urea
US4801745A (en)	1989-01-31	Improved process for the preparation of urea
US3155722A (en)	1964-11-03	Recovery of residual ammonia and carbon dioxide in the synthesis of urea
IE46220B1 (en)	1983-04-06	Production of urea
SU869551A3 (ru)	1981-09-30	Способ выделени аммиака и углекислоты из их смеси
EP0009545B1 (de)	1982-12-08	Gewinnung von Acrylsäure durch Abschreckmethode im Kreislauf
US3120563A (en)	1964-02-04	Urea preparation
US2056283A (en)	1936-10-06	Process for the production of urea and an ammonium salt
KR870001249B1 (ko)	1987-06-29	요소 합성법
IL23062A (en)	1968-08-22	Method of preparing urea
US3682911A (en)	1972-08-08	Process for preparing melamine from urea
US3759992A (en)	1973-09-18	Urea synthesis
GB706659A (en)	1954-03-31	Process for the recovery of hydrocyanic acid and ammonia
US5597454A (en)	1997-01-28	Process for producing urea
CA1049556A (en)	1979-02-27	Urea manufacture
US4207256A (en)	1980-06-10	Treatment of water vapor generated in concentrating an aqueous urea solution
US3527799A (en)	1970-09-08	Urea synthesis process
SU1153825A3 (ru)	1985-04-30	Способ получени мочевины
US2761761A (en)	1956-09-04	Method for concentrating dilute nitric acid
US3954955A (en)	1976-05-04	Process for working up the wash solution obtained in the washing of SO2 -containing off-gases