GB1319870A - Separation by crystallization - Google Patents
Separation by crystallizationInfo
- Publication number
- GB1319870A GB1319870A GB5312971A GB5312971A GB1319870A GB 1319870 A GB1319870 A GB 1319870A GB 5312971 A GB5312971 A GB 5312971A GB 5312971 A GB5312971 A GB 5312971A GB 1319870 A GB1319870 A GB 1319870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- mixture
- melt
- water
- crystallizing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000002425 crystallisation Methods 0.000 title abstract 3
- 230000008025 crystallization Effects 0.000 title abstract 2
- 238000000926 separation method Methods 0.000 title 1
- 150000001875 compounds Chemical class 0.000 abstract 5
- 239000000203 mixture Substances 0.000 abstract 5
- 239000000155 melt Substances 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 239000003518 caustics Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 150000002894 organic compounds Chemical class 0.000 abstract 2
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical class [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 abstract 1
- CZGCEKJOLUNIFY-UHFFFAOYSA-N 4-Chloronitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(Cl)C=C1 CZGCEKJOLUNIFY-UHFFFAOYSA-N 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/16—Separation; Purification; Stabilisation; Use of additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0009—Crystallisation cooling by heat exchange by direct heat exchange with added cooling fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/07—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms
- C07C205/11—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings
- C07C205/12—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings the six-membered aromatic ring or a condensed ring system containing that ring being substituted by halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/14—Purification; Separation; Use of additives by crystallisation; Purification or separation of the crystals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9047670A | 1970-11-17 | 1970-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1319870A true GB1319870A (en) | 1973-06-13 |
Family
ID=22222934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5312971A Expired GB1319870A (en) | 1970-11-17 | 1971-11-16 | Separation by crystallization |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE775337A (enrdf_load_stackoverflow) |
| CA (1) | CA952424A (enrdf_load_stackoverflow) |
| DE (1) | DE2156880A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2114772A5 (enrdf_load_stackoverflow) |
| GB (1) | GB1319870A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845506A (zh) * | 2021-10-18 | 2021-12-28 | 惠州市宙邦化工有限公司 | 一种碳酸乙烯酯的动态结晶提纯方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR23271A (tr) * | 1987-02-06 | 1989-08-09 | Krupp Koppers Gmbh | En asagi % 95.5 safliginda p-ksilol'un kazanilmasina mahsus usul |
| EP0340487B1 (de) * | 1988-05-05 | 1992-12-09 | Krupp Koppers GmbH | Verfahren zur Gewinnung von p-Xylol mit einer Reinheit von mindestens 99,5 % |
-
1971
- 1971-11-16 DE DE19712156880 patent/DE2156880A1/de active Pending
- 1971-11-16 GB GB5312971A patent/GB1319870A/en not_active Expired
- 1971-11-16 BE BE775337A patent/BE775337A/xx unknown
- 1971-11-16 CA CA127,827A patent/CA952424A/en not_active Expired
- 1971-11-16 FR FR7141031A patent/FR2114772A5/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845506A (zh) * | 2021-10-18 | 2021-12-28 | 惠州市宙邦化工有限公司 | 一种碳酸乙烯酯的动态结晶提纯方法 |
| US11958820B2 (en) | 2021-10-18 | 2024-04-16 | Shenzhen Capchem Technology Co., Ltd. | Method for purifying ethylene carbonate through dynamic crystallization |
Also Published As
| Publication number | Publication date |
|---|---|
| BE775337A (fr) | 1972-05-16 |
| DE2156880A1 (de) | 1972-05-25 |
| CA952424A (en) | 1974-08-06 |
| FR2114772A5 (enrdf_load_stackoverflow) | 1972-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2588449A (en) | Levulose dihydrate | |
| FR2114772A5 (enrdf_load_stackoverflow) | ||
| GB1010840A (en) | A process of recovering alkali metal dithionite from a solution thereof by cooling and crystallizing | |
| GB1381724A (en) | Separation process | |
| GB1246277A (en) | Improvements in the crystallisation of substances | |
| ES435492A1 (es) | Procedimiento para separar paraxileno de una mezcla normal- mente liquida de isomeros de xileno y aromaticos c 8grados. | |
| GB1149322A (en) | An improved process for purifying 4,4'-isopropylidenediphenol | |
| CA2418966A1 (en) | Method for producing tagatose crystals | |
| GB1274798A (en) | A process for preparing 2,2-di(4-hydroxyphenyl) propane of a high degree of purity | |
| GB912783A (en) | Separation by crystallization | |
| GB1389856A (en) | Crystallisation of fructose | |
| GB1436779A (en) | Process for separating resorcinol from hydroquinone | |
| GB1208364A (en) | Purification process involving two crystallization stages for separating paraxylene from an aromatic hydrocarbon fraction | |
| US2982616A (en) | Method of producing calcium-free crystalline cyanamide | |
| GB1277282A (en) | A process for the purification of 4,4-dihydroxy-diphenyl-2,2-propane or the phenol adduct thereof | |
| GB1461836A (en) | Process for optical resolution of racemic lysine sulphanilate | |
| SU407878A1 (ru) | Способ очистки бифталата калия | |
| GB1249783A (en) | Concentration of aqueous acetic acid | |
| GB1413032A (en) | Aqueous crystallization of sylitol | |
| GB1414215A (en) | Recovery of meta-xylene by selective crystallization | |
| ES433589A1 (es) | Un metodo para cristalizar fructosa en una solucion acuosa de la misma que contiene glucosa como impureza. | |
| US1870319A (en) | Yoshitaro takayama | |
| SU137112A1 (ru) | Способ извлечени четырех бромистого углерода из сырца | |
| US2556315A (en) | Production of a salt of p-chlorophenyl cyanamide and isopropylguanidine | |
| GB1208328A (en) | Process for the separation of paraxylene from a hydrocarbon mixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |