GB1362207A - Method and apparatus for separating a substance from a mixture of substances - Google Patents
Method and apparatus for separating a substance from a mixture of substancesInfo
- Publication number
- GB1362207A GB1362207A GB3762271A GB3762271A GB1362207A GB 1362207 A GB1362207 A GB 1362207A GB 3762271 A GB3762271 A GB 3762271A GB 3762271 A GB3762271 A GB 3762271A GB 1362207 A GB1362207 A GB 1362207A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- container
- xylene
- mixture
- isothermally
- 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
- 239000000203 mixture Substances 0.000 title abstract 3
- 239000000126 substance Substances 0.000 title 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 abstract 6
- 239000013078 crystal Substances 0.000 abstract 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- 239000007791 liquid phase Substances 0.000 abstract 2
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 abstract 2
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 239000002178 crystalline material Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1362207 Crystallizing from a liquid KOBE Steel Ltd 11 Aug 1971 [9 June 1971] 37622/71 Heading BIG Crystals are grown substantially isothermally by gradually altering the pressure to which a solid/liquid system is subjected. As shown, a mixture of, for example, p-xylene and m-xylene is placed in container 1 and subjected to a pressure of 550 kgm cm<SP>-2</SP> at 9.7‹C. Seed crystal of p-xylene is placed in container 6 at the same pressure. The seed crystal is transferred to container 1, through valve 9, and the pressure gradually increased substantially isothermally to 2900 kgm cm<SP>-2</SP> by acting on member 3 to reduce the free volume within the container. The liquid phase may then be removed, through valve 8 to container 4. Crystals of over 99% pure p-xylene are obtained. In another example, a mixture of benzene and methyl red was solidified at a pressure of 800 kg cm<SP>-2</SP> and 25‹C and then allowed to liquefy isothermally by gradually reducing the pressure. When 20% of the crystalline material had liquefied, 99.2% of the methyl red was found to be in the liquid phase. Reference is made to the use of the method for separating optical isomers and isotopes of hydrogen and uranium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4075971A JPS5322065B1 (en) | 1971-06-09 | 1971-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1362207A true GB1362207A (en) | 1974-07-30 |
Family
ID=12589537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3762271A Expired GB1362207A (en) | 1971-06-09 | 1971-08-11 | Method and apparatus for separating a substance from a mixture of substances |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5322065B1 (en) |
| CA (1) | CA944271A (en) |
| DD (1) | DD94802A5 (en) |
| DE (1) | DE2135539C3 (en) |
| FR (1) | FR2101982A5 (en) |
| GB (1) | GB1362207A (en) |
| PH (1) | PH9344A (en) |
| SE (1) | SE392218B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313101C1 (en) * | 1993-04-22 | 1994-08-11 | Hoechst Ag | Process for separating and purifying substances by melt crystallisation at high pressures |
| DE4313121C1 (en) * | 1993-04-22 | 1994-08-11 | Hoechst Ag | Process for separation and purification of substances by melt crystallisation |
| FR3120340B1 (en) | 2021-03-02 | 2023-06-09 | Psa Automobiles Sa | Method and device for determining a regulatory speed on a portion of road for a vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE441177C (en) * | 1927-02-26 | Crosby Field | Method and device for crystallization | |
| DE404906C (en) * | 1923-11-02 | 1924-10-23 | Rotopulsor Akt Ges | Process for the transfer of crystallizable, amorphous, solid substances into the crystalline state |
-
1971
- 1971-06-09 JP JP4075971A patent/JPS5322065B1/ja active Pending
- 1971-07-16 DE DE19712135539 patent/DE2135539C3/en not_active Expired
- 1971-07-23 DD DD15668971A patent/DD94802A5/xx unknown
- 1971-07-30 FR FR7128139A patent/FR2101982A5/fr not_active Expired
- 1971-08-09 PH PH12737*UA patent/PH9344A/en unknown
- 1971-08-11 GB GB3762271A patent/GB1362207A/en not_active Expired
- 1971-08-11 SE SE1025771A patent/SE392218B/en unknown
- 1971-08-19 CA CA120,962A patent/CA944271A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2135539B2 (en) | 1981-01-22 |
| CA944271A (en) | 1974-03-26 |
| FR2101982A5 (en) | 1972-03-31 |
| PH9344A (en) | 1975-10-06 |
| DE2135539A1 (en) | 1972-12-28 |
| JPS5322065B1 (en) | 1978-07-06 |
| SE392218B (en) | 1977-03-21 |
| DE2135539C3 (en) | 1981-10-08 |
| DD94802A5 (en) | 1973-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |