SU422140A3 - - Google Patents
Info
- Publication number
- SU422140A3 SU422140A3 SU1677737A SU1677737A SU422140A3 SU 422140 A3 SU422140 A3 SU 422140A3 SU 1677737 A SU1677737 A SU 1677737A SU 1677737 A SU1677737 A SU 1677737A SU 422140 A3 SU422140 A3 SU 422140A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- urea
- temperature
- concentration
- melting point
- resulting
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 18
- 239000004202 carbamide Substances 0.000 description 18
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000011552 falling film Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Fertilizers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45057413A JPS4916847B1 (enrdf_load_stackoverflow) | 1970-07-01 | 1970-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU422140A3 true SU422140A3 (enrdf_load_stackoverflow) | 1974-03-30 |
Family
ID=13054945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1677737A SU422140A3 (enrdf_load_stackoverflow) | 1970-07-01 | 1971-06-30 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4916847B1 (enrdf_load_stackoverflow) |
| FR (1) | FR2099882A5 (enrdf_load_stackoverflow) |
| NL (1) | NL152546B (enrdf_load_stackoverflow) |
| SU (1) | SU422140A3 (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559930B (zh) * | 2019-09-16 | 2021-11-30 | 山东益丰生化环保股份有限公司 | 一种车用尿素溶液及其制备方法 |
-
1970
- 1970-07-01 JP JP45057413A patent/JPS4916847B1/ja active Pending
-
1971
- 1971-06-24 FR FR7123006A patent/FR2099882A5/fr not_active Expired
- 1971-06-30 SU SU1677737A patent/SU422140A3/ru active
- 1971-07-01 NL NL717109106A patent/NL152546B/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2099882A5 (en) | 1972-03-17 |
| NL152546B (nl) | 1977-03-15 |
| JPS4916847B1 (enrdf_load_stackoverflow) | 1974-04-25 |
| NL7109106A (enrdf_load_stackoverflow) | 1972-01-04 |
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