IE48099B1 - Process for producing urea - Google Patents
Process for producing ureaInfo
- Publication number
- IE48099B1 IE48099B1 IE706/79A IE70679A IE48099B1 IE 48099 B1 IE48099 B1 IE 48099B1 IE 706/79 A IE706/79 A IE 706/79A IE 70679 A IE70679 A IE 70679A IE 48099 B1 IE48099 B1 IE 48099B1
- Authority
- IE
- Ireland
- Prior art keywords
- urea
- solution
- carbamate
- ammonia
- stage
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000004202 carbamide Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 101
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 41
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims abstract description 20
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 16
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 14
- 235000012501 ammonium carbonate Nutrition 0.000 claims abstract description 14
- 229910001868 water Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000000629 steam reforming Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 42
- 238000003786 synthesis reaction Methods 0.000 claims description 30
- 239000007864 aqueous solution Substances 0.000 claims description 27
- 230000015572 biosynthetic process Effects 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 230000002211 methanization Effects 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000008246 gaseous mixture Substances 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 description 9
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005201 scrubbing 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21993/78A IT1094295B (it) | 1978-04-05 | 1978-04-05 | Procedimento integrato ammoniaca-urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE790706L IE790706L (en) | 1979-10-05 |
| IE48099B1 true IE48099B1 (en) | 1984-09-19 |
Family
ID=11189914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE706/79A IE48099B1 (en) | 1978-04-05 | 1979-08-08 | Process for producing urea |
Country Status (23)
| Country | Link |
|---|---|
| JP (1) | JPS54132525A (it) |
| AU (1) | AU519817B2 (it) |
| BE (1) | BE875346A (it) |
| BR (1) | BR7902122A (it) |
| CA (1) | CA1110659A (it) |
| CH (1) | CH637633A5 (it) |
| CS (1) | CS230563B2 (it) |
| DD (1) | DD142709A5 (it) |
| DE (1) | DE2913793C3 (it) |
| DK (1) | DK139179A (it) |
| EG (1) | EG13847A (it) |
| ES (1) | ES479940A1 (it) |
| FR (1) | FR2421847A1 (it) |
| GB (1) | GB2018249B (it) |
| IE (1) | IE48099B1 (it) |
| IN (1) | IN150631B (it) |
| IT (1) | IT1094295B (it) |
| LU (1) | LU81113A1 (it) |
| MX (1) | MX151216A (it) |
| NL (1) | NL7902566A (it) |
| PL (1) | PL116665B1 (it) |
| SE (1) | SE432591B (it) |
| SU (1) | SU1225485A3 (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61109760A (ja) * | 1984-11-02 | 1986-05-28 | Toyo Eng Corp | 尿素製造法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4832091B1 (it) * | 1968-02-12 | 1973-10-04 | ||
| IT1014987B (it) * | 1974-06-12 | 1977-04-30 | Snam Progetti | Procedimento integrato urea am moniaca |
| IT1034674B (it) * | 1975-03-28 | 1979-10-10 | Snam Progetti | Processo flessibile intergrato per la produzione di ammoniaca edurea |
| IT1065422B (it) * | 1976-12-23 | 1985-02-25 | Snam Progetti | Processo ammoniaca-urea integrato per la produzione di urea |
-
1978
- 1978-04-05 IT IT21993/78A patent/IT1094295B/it active
-
1979
- 1979-03-07 AU AU44876/79A patent/AU519817B2/en not_active Ceased
- 1979-03-08 CA CA323,007A patent/CA1110659A/en not_active Expired
- 1979-03-15 GB GB7909086A patent/GB2018249B/en not_active Expired
- 1979-03-24 IN IN289/CAL/79A patent/IN150631B/en unknown
- 1979-03-28 EG EG195/79A patent/EG13847A/xx active
- 1979-03-28 FR FR7907848A patent/FR2421847A1/fr active Granted
- 1979-03-29 JP JP3633279A patent/JPS54132525A/ja active Pending
- 1979-03-30 ES ES479940A patent/ES479940A1/es not_active Expired
- 1979-04-02 NL NL7902566A patent/NL7902566A/xx not_active Application Discontinuation
- 1979-04-03 DD DD79211973A patent/DD142709A5/de unknown
- 1979-04-03 PL PL1979214649A patent/PL116665B1/pl unknown
- 1979-04-03 LU LU81113A patent/LU81113A1/xx unknown
- 1979-04-04 CS CS792292A patent/CS230563B2/cs unknown
- 1979-04-04 CH CH313979A patent/CH637633A5/it not_active IP Right Cessation
- 1979-04-04 MX MX177195A patent/MX151216A/es unknown
- 1979-04-04 SE SE7903018A patent/SE432591B/sv not_active IP Right Cessation
- 1979-04-04 SU SU792749003A patent/SU1225485A3/ru active
- 1979-04-04 DK DK139179A patent/DK139179A/da not_active IP Right Cessation
- 1979-04-05 BE BE0/194424A patent/BE875346A/xx not_active IP Right Cessation
- 1979-04-05 BR BR7902122A patent/BR7902122A/pt unknown
- 1979-04-05 DE DE2913793A patent/DE2913793C3/de not_active Expired
- 1979-08-08 IE IE706/79A patent/IE48099B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7902122A (pt) | 1979-12-04 |
| IT7821993A0 (it) | 1978-04-05 |
| GB2018249A (en) | 1979-10-17 |
| JPS54132525A (en) | 1979-10-15 |
| ES479940A1 (es) | 1979-12-01 |
| DK139179A (da) | 1979-10-06 |
| MX151216A (es) | 1984-10-11 |
| CH637633A5 (it) | 1983-08-15 |
| IE790706L (en) | 1979-10-05 |
| FR2421847A1 (fr) | 1979-11-02 |
| NL7902566A (nl) | 1979-10-09 |
| SE7903018L (sv) | 1979-10-06 |
| AU519817B2 (en) | 1981-12-24 |
| GB2018249B (en) | 1982-09-02 |
| EG13847A (en) | 1982-12-31 |
| CS230563B2 (en) | 1984-08-13 |
| PL116665B1 (en) | 1981-06-30 |
| DE2913793C3 (de) | 1981-05-27 |
| SU1225485A3 (ru) | 1986-04-15 |
| SE432591B (sv) | 1984-04-09 |
| IN150631B (it) | 1982-11-20 |
| DE2913793A1 (de) | 1979-10-11 |
| AU4487679A (en) | 1979-10-18 |
| DD142709A5 (de) | 1980-07-09 |
| FR2421847B1 (it) | 1982-10-22 |
| IT1094295B (it) | 1985-07-26 |
| DE2913793B2 (de) | 1980-06-04 |
| LU81113A1 (fr) | 1979-06-19 |
| CA1110659A (en) | 1981-10-13 |
| PL214649A1 (pl) | 1979-12-17 |
| BE875346A (fr) | 1979-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3940428A (en) | Methanol production | |
| US4138434A (en) | Integrated ammonia-urea producing process, for the production of urea | |
| RU2196767C2 (ru) | Способ совместного производства аммиака и мочевины, установка для осуществления способа, способ модернизации установок синтеза аммиака и синтеза мочевины | |
| US4235816A (en) | Integrated ammonia-urea process | |
| JPS629301Y2 (it) | ||
| SU833158A3 (ru) | Способ синтеза мочевины и аммиака | |
| US3120563A (en) | Urea preparation | |
| US3297408A (en) | Process for production of hydrogen | |
| US4699772A (en) | Process for preparing ammonia | |
| US3544628A (en) | Urea synthesis | |
| US2046827A (en) | Production of urea and nitrogen oxides | |
| US3584998A (en) | Process for making ammonia | |
| US3932504A (en) | Urea manufacture | |
| IE48099B1 (en) | Process for producing urea | |
| US3137725A (en) | Heat recovery in urea synthesis process | |
| US3107149A (en) | Method of separating ammonia from carbon dioxide | |
| US3471558A (en) | Method for the decomposition and evaporation of urea synthesis effluent | |
| US3337297A (en) | Process for combined production of ammonia and ammonium salts | |
| US3421854A (en) | Manufacture of nitrogen tetroxide | |
| KR870000807B1 (ko) | 요소 합성방법 | |
| US3046307A (en) | Distillation process for synthesizing | |
| ES443998A1 (es) | Procedimiento para el tratamiento de vapor de agua generado al concentrar una solucion acuosa de urea. | |
| IE45825B1 (en) | Process for preparing a urea solution from nh3 and co2 | |
| US4061675A (en) | Process for the synthesis of urea from carbon dioxide and ammonia | |
| US3236888A (en) | Production of urea |