SU1155155A3 - Способ концентрировани водных растворов мочевины - Google Patents
Способ концентрировани водных растворов мочевины Download PDFInfo
- Publication number
- SU1155155A3 SU1155155A3 SU802981965A SU2981965A SU1155155A3 SU 1155155 A3 SU1155155 A3 SU 1155155A3 SU 802981965 A SU802981965 A SU 802981965A SU 2981965 A SU2981965 A SU 2981965A SU 1155155 A3 SU1155155 A3 SU 1155155A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- urea
- stage
- concentration
- solution
- aqueous solution
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000004202 carbamide Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007864 aqueous solution Substances 0.000 title claims description 30
- 239000011552 falling film Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 30
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000011261 inert gas Substances 0.000 abstract description 12
- 239000012141 concentrate Substances 0.000 abstract description 4
- 235000013877 carbamide Nutrition 0.000 description 60
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000012856 packing Methods 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 230000002485 urinary effect Effects 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
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 |
|---|---|---|---|
| JP54117370A JPS5826909B2 (ja) | 1979-09-14 | 1979-09-14 | 尿素水溶液の濃縮方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1155155A3 true SU1155155A3 (ru) | 1985-05-07 |
Family
ID=14709970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802981965A SU1155155A3 (ru) | 1979-09-14 | 1980-09-12 | Способ концентрировани водных растворов мочевины |
Country Status (6)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8006477A (nl) * | 1980-11-28 | 1982-06-16 | Unie Van Kunstmestfab Bv | Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossing. |
| IT1163795B (it) * | 1983-07-18 | 1987-04-08 | Montedison Spa | Apparecchio per lo strippaggio dell'ammoniaca dalle soluzioni provenienti dalla sintesi dell'urea |
| US4654124A (en) * | 1985-09-27 | 1987-03-31 | Aristech Chemical Corporation | Purifying cumene hydroperoxide |
| NL8602769A (nl) * | 1986-11-03 | 1988-06-01 | Stamicarbon | Werkwijze voor het concentreren van een ureumoplossing en inrichting voor het uitvoeren van de werkwijze. |
| US5597454A (en) * | 1995-04-06 | 1997-01-28 | Lee; Jing M. | Process for producing urea |
| DE69722606T2 (de) * | 1997-06-26 | 2004-04-29 | Urea Casale S.A. | Verfahren zur Verminderung der Emissionen von freiem Restammoniak aus einer Ureumproduktionsanlage |
| US7049474B1 (en) | 2000-09-12 | 2006-05-23 | Sunoco, Inc. (R&M) | Water diluted cumene hydroperoxide solutions |
| RU2230592C1 (ru) * | 2002-10-14 | 2004-06-20 | Ооо "Хармс" | Пленочный выпарной аппарат |
| PL3452212T3 (pl) * | 2016-05-03 | 2020-06-29 | Stamicarbon B.V. | Wytwarzanie mocznika z kontrolowanym biuretem |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2367695A (en) * | 1940-10-03 | 1945-01-23 | Research Corp | Concentration of hygroscopic solutions |
| US2933527A (en) * | 1956-04-13 | 1960-04-19 | Lonza Electric & Chem Works | Process for the manufacture of urea in granular form |
| US3147174A (en) * | 1959-10-14 | 1964-09-01 | Chemical Construction Corp | Low moisture urea melt |
| NL141179B (nl) * | 1967-01-20 | 1974-02-15 | Whitlock Mfg Co | Werkwijze en inrichting voor de bereiding van ureum. |
| US3405689A (en) * | 1967-05-29 | 1968-10-15 | Stauffer Chemical Co | Apparatus for boiling liquids by falling film heating |
| US3822192A (en) * | 1971-12-08 | 1974-07-02 | Aluminum Co Of America | Evaporative method |
-
1979
- 1979-09-14 JP JP54117370A patent/JPS5826909B2/ja not_active Expired
-
1980
- 1980-08-28 IN IN989/CAL/80A patent/IN151544B/en unknown
- 1980-09-02 GB GB8028261A patent/GB2058764B/en not_active Expired
- 1980-09-11 US US06/186,058 patent/US4316767A/en not_active Expired - Lifetime
- 1980-09-12 SU SU802981965A patent/SU1155155A3/ru active
- 1980-09-12 BR BR8005864A patent/BR8005864A/pt unknown
Non-Patent Citations (1)
| Title |
|---|
| 1. Кратка химическа энциклопеди . Т. 1, М., 1961, с. 677. 2. Патент US 3491821, кл. 59-13, опублик. 1970 (прототип). 54) * |
Also Published As
| Publication number | Publication date |
|---|---|
| IN151544B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1983-05-14 |
| GB2058764B (en) | 1983-09-07 |
| GB2058764A (en) | 1981-04-15 |
| BR8005864A (pt) | 1981-03-24 |
| JPS5643256A (en) | 1981-04-21 |
| US4316767A (en) | 1982-02-23 |
| JPS5826909B2 (ja) | 1983-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4348373A (en) | Process for the preparation of sulfuric acid | |
| US2598116A (en) | Process for cooling sulfur burner gas | |
| US20040097756A1 (en) | Hydraulically sealed crossflow mass transfer tray | |
| SU1155155A3 (ru) | Способ концентрировани водных растворов мочевины | |
| EP0002298B1 (en) | Process and apparatus for the removal of ammonium carbamate from a urea-synthesis solution | |
| CA1037224A (en) | Process for absorbing so3 | |
| US4280990A (en) | High pressure process for recovery of sulphur from gases | |
| CN109070043B (zh) | 在控制缩二脲的情况下的尿素生产 | |
| US4023938A (en) | Process for dehydrating gas with sulfuric acid | |
| CA1144512A (en) | After-treatment processes and apparatus especially for urea and ammonium nitrate plants | |
| JPS60185739A (ja) | ホルムアルデヒドの製法 | |
| JPS62167207A (ja) | 濃硫酸の製造方法及びこれに使用する三酸化硫黄吸収装置 | |
| US3849541A (en) | Process for purifying fumes | |
| US5801266A (en) | Method for producing acrylonitrile | |
| US5907053A (en) | Method for preparing acrylonitrile | |
| GB2109372A (en) | Urea synthesis | |
| JPH0662478B2 (ja) | ホルムアルデヒド水溶液の製造法 | |
| EP3140253B1 (en) | Process and plant for the production of sulfuric acid | |
| CN1022321C (zh) | 浓缩尿素溶液的方法及其装置 | |
| US20040146446A1 (en) | Method for the catalytic production of ammonia from synthesis gas | |
| US2088003A (en) | Recovery of hydrocyanic acid | |
| US4242321A (en) | Process for separating SO2 from a current of gas containing the same, and plant for carrying out such process | |
| GB2057410A (en) | Production of pure cyanogen chloride | |
| CN208756997U (zh) | 尿素精馏系统及尿素制备系统 | |
| CA2460516C (en) | Process for the preparation of urea |