DE2340625A1 - Selektive abtrennung von xylolen durch klasseneinteilung von kristallen unterschiedlicher groesse - Google Patents
Selektive abtrennung von xylolen durch klasseneinteilung von kristallen unterschiedlicher groesseInfo
- Publication number
- DE2340625A1 DE2340625A1 DE19732340625 DE2340625A DE2340625A1 DE 2340625 A1 DE2340625 A1 DE 2340625A1 DE 19732340625 DE19732340625 DE 19732340625 DE 2340625 A DE2340625 A DE 2340625A DE 2340625 A1 DE2340625 A1 DE 2340625A1
- Authority
- DE
- Germany
- Prior art keywords
- xylene
- meta
- para
- crystals
- mixture
- 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.)
- Ceased
Links
- 239000013078 crystal Substances 0.000 title claims description 142
- 238000000926 separation method Methods 0.000 title claims description 20
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 claims description 329
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 244
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 114
- 239000000203 mixture Substances 0.000 claims description 78
- 239000007787 solid Substances 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 66
- 239000002002 slurry Substances 0.000 claims description 45
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 43
- 238000002425 crystallisation Methods 0.000 claims description 34
- 230000008025 crystallization Effects 0.000 claims description 34
- 239000008096 xylene Substances 0.000 claims description 20
- 230000005496 eutectics Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 239000012141 concentrate Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000001953 recrystallisation Methods 0.000 claims description 9
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 150000003738 xylenes Chemical class 0.000 claims description 7
- 238000005194 fractionation Methods 0.000 claims description 5
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 2
- 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 claims 2
- 239000002244 precipitate Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 27
- 238000002474 experimental method Methods 0.000 description 15
- 239000000706 filtrate Substances 0.000 description 15
- 239000004744 fabric Substances 0.000 description 11
- 238000009826 distribution Methods 0.000 description 10
- 238000011068 loading method Methods 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 239000012452 mother liquor Substances 0.000 description 9
- 230000036961 partial effect Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 238000006317 isomerization reaction Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000000374 eutectic mixture Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000012265 solid product Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000006277 sulfonation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100069818 Caenorhabditis elegans gur-3 gene Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27985372A | 1972-08-11 | 1972-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2340625A1 true DE2340625A1 (de) | 1974-03-07 |
Family
ID=23070651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732340625 Ceased DE2340625A1 (de) | 1972-08-11 | 1973-08-10 | Selektive abtrennung von xylolen durch klasseneinteilung von kristallen unterschiedlicher groesse |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3798282A (OSRAM) |
| JP (1) | JPS5538936B2 (OSRAM) |
| BE (1) | BE803510A (OSRAM) |
| DE (1) | DE2340625A1 (OSRAM) |
| FR (1) | FR2195609B1 (OSRAM) |
| GB (1) | GB1414214A (OSRAM) |
| IT (1) | IT990227B (OSRAM) |
| NL (1) | NL7311075A (OSRAM) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1476222A (en) * | 1974-11-21 | 1977-06-10 | Ici Ltd | Separating xylenes by crystal size classification |
| DE3839229A1 (de) * | 1988-11-19 | 1990-05-23 | Krupp Koppers Gmbh | Verfahren zur gewinnung von p-xylol mit einer reinheit von mehr als 99,8 gew.-% |
| CA2335052C (en) | 1998-06-12 | 2006-08-15 | Washington Group International, Inc. | Production of high purity meta-xylene |
| CN113144660B (zh) * | 2021-02-05 | 2023-03-03 | 成都思达能环保设备有限公司 | 一种结晶方法及系统 |
| CN118925272B (zh) * | 2024-10-12 | 2025-01-28 | 安徽瑞邦生物科技有限公司 | 一种l-缬氨酸的提纯设备及其提纯方法 |
-
1972
- 1972-08-11 US US00279853A patent/US3798282A/en not_active Expired - Lifetime
-
1973
- 1973-08-10 IT IT51979/73A patent/IT990227B/it active
- 1973-08-10 GB GB3803173A patent/GB1414214A/en not_active Expired
- 1973-08-10 BE BE134494A patent/BE803510A/xx not_active IP Right Cessation
- 1973-08-10 FR FR7329309A patent/FR2195609B1/fr not_active Expired
- 1973-08-10 NL NL7311075A patent/NL7311075A/xx not_active Application Discontinuation
- 1973-08-10 DE DE19732340625 patent/DE2340625A1/de not_active Ceased
- 1973-08-11 JP JP9044973A patent/JPS5538936B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3798282A (en) | 1974-03-19 |
| FR2195609B1 (OSRAM) | 1978-08-11 |
| IT990227B (it) | 1975-06-20 |
| FR2195609A1 (OSRAM) | 1974-03-08 |
| JPS4985030A (OSRAM) | 1974-08-15 |
| NL7311075A (OSRAM) | 1974-02-13 |
| GB1414214A (en) | 1975-11-19 |
| BE803510A (fr) | 1974-02-11 |
| JPS5538936B2 (OSRAM) | 1980-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8128 | New person/name/address of the agent |
Representative=s name: ZUMSTEIN SEN., F., DR. ASSMANN, E., DIPL.-CHEM. DR |
|
| 8131 | Rejection |