DE1768473A1 - Verfahren zur Abtrennung von p-Xylol aus einer aromatischen Kohlenwasserstoffraktion - Google Patents
Verfahren zur Abtrennung von p-Xylol aus einer aromatischen KohlenwasserstoffraktionInfo
- Publication number
- DE1768473A1 DE1768473A1 DE19681768473 DE1768473A DE1768473A1 DE 1768473 A1 DE1768473 A1 DE 1768473A1 DE 19681768473 DE19681768473 DE 19681768473 DE 1768473 A DE1768473 A DE 1768473A DE 1768473 A1 DE1768473 A1 DE 1768473A1
- Authority
- DE
- Germany
- Prior art keywords
- xylene
- cake
- toluene
- stage
- crystallization zone
- 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.)
- Pending
Links
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 title claims description 124
- 238000000034 method Methods 0.000 title claims description 22
- 238000000926 separation method Methods 0.000 title claims description 8
- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 122
- 238000002425 crystallisation Methods 0.000 claims description 38
- 230000008025 crystallization Effects 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 30
- 239000013078 crystal Substances 0.000 claims description 25
- 239000012452 mother liquor Substances 0.000 claims description 18
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 10
- 239000004215 Carbon black (E152) Substances 0.000 claims description 9
- 238000005119 centrifugation Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 17
- 239000000155 melt Substances 0.000 description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 238000004508 fractional distillation Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 230000005496 eutectics Effects 0.000 description 5
- 239000003085 diluting agent Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229940078552 o-xylene Drugs 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000374 eutectic mixture Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- 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)
- 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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US64041667A | 1967-05-22 | 1967-05-22 | |
| US64039967A | 1967-05-22 | 1967-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1768473A1 true DE1768473A1 (de) | 1971-10-07 |
Family
ID=27093551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681768473 Pending DE1768473A1 (de) | 1967-05-22 | 1968-05-17 | Verfahren zur Abtrennung von p-Xylol aus einer aromatischen Kohlenwasserstoffraktion |
Country Status (6)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662013A (en) * | 1970-02-03 | 1972-05-09 | Mobil Oil Corp | Single stage crystallization process for separating high purity paraxylene |
| GB8624266D0 (en) * | 1986-10-09 | 1986-11-12 | Ici Plc | Separation process |
| FR2728894A1 (fr) * | 1994-12-29 | 1996-07-05 | Inst Francais Du Petrole | Procede de separation de paraxylene comportant au moins deux etages de cristallisation a haute temperature |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA571632A (en) * | 1959-03-03 | M. Powers John | Method for recovering paraxylene | |
| US2795634A (en) * | 1953-05-01 | 1957-06-11 | Standard Oil Co | Recovery of ortho-and para-xylenes from c8 aromatic mixtures |
| GB949161A (en) * | 1959-04-30 | 1964-02-12 | Maruzen Sekiyu Kabushiki Kaish | A process and apparatus for manufacturing high purity p-xylene |
-
1967
- 1967-05-22 US US640399A patent/US3462506A/en not_active Expired - Lifetime
- 1967-05-22 US US640416A patent/US3462510A/en not_active Expired - Lifetime
-
1968
- 1968-05-17 DE DE19681768473 patent/DE1768473A1/de active Pending
- 1968-05-20 GB GB23894/68A patent/GB1221867A/en not_active Expired
- 1968-05-21 BE BE715491D patent/BE715491A/xx unknown
- 1968-05-22 NL NL6807290A patent/NL6807290A/xx unknown
- 1968-05-22 FR FR1564410D patent/FR1564410A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6807290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1968-11-25 |
| US3462506A (en) | 1969-08-19 |
| US3462510A (en) | 1969-08-19 |
| FR1564410A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1969-04-18 |
| GB1221867A (en) | 1971-02-10 |
| BE715491A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1968-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHW | Rejection |