GB1138004A - Improvements relating to extractive-distillation - Google Patents
Improvements relating to extractive-distillationInfo
- Publication number
- GB1138004A GB1138004A GB14112/67A GB1411267A GB1138004A GB 1138004 A GB1138004 A GB 1138004A GB 14112/67 A GB14112/67 A GB 14112/67A GB 1411267 A GB1411267 A GB 1411267A GB 1138004 A GB1138004 A GB 1138004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- columns
- column
- extractive
- distillation
- extraction agent
- 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
- 238000000895 extractive distillation Methods 0.000 title abstract 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 9
- 238000000605 extraction Methods 0.000 abstract 5
- 239000000654 additive Substances 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 3
- 239000008096 xylene Substances 0.000 abstract 3
- 230000000996 additive effect Effects 0.000 abstract 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 2
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
- C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
- C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic 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)
Abstract
1,138,004. Extractive distillation. HEINRICH KOPPERS G.m.b.H. 28 March, 1967 [1 April, 1966], No. 14112/67. Heading C5E. Aromatic hydrocarbons are separated from non-aromatic hydrocarbons by an extractive distillation process characterized by the following features:- (a) The extraction agent, e.g. propylene carbonate, contains as additives compounds similar to, but not the same as, those being extracted (e.g. if the extraction is to produce benzene, toluene and xylene, then the additives may be C 9 aromatics); (b) At least two extractive - distillation columns, shown as 2 and 7 in the figure, are installed one behind the other in series, the downstream column 7 being operated at a lower pressure than the upstream column 2; and (c) The extract is treated in a number of stripping columns in series, each corresponding to a desired product (shown as columns 11, 18 and 24 corresponding to benzene, toluene and xylene), a product containing non-aromatics being drawn off from the tray above the feeding tray of each such stripping column (shown at 13, 20 and 26). The fractions drawn off at 13, 20 and 26 are treated in auxiliary strippers 14, 21 and 27 to remove any aromatics present, and are then combined in line 16 and subjected either to further extractive distillation in column 29 or to common distillation (not shown). The overheads from columns 2, 7 and 29 are combined as non-aromatic product, and the residue from column 29 is combined with that from column 7 and recycled to the stripping columns. The additive to the extraction agent may be already present, e.g. in recycled extraction agent, or may be added thereto, and part of the additive may be added directly to the extractive-distillations columns above the feed-point of the extraction agent, i.e. at 34 and 35 to columns 2 and 7 respectively. Benzene, toluene and xylene of high purity are recovered at 12, 19 and 25.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0058899 | 1966-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1138004A true GB1138004A (en) | 1968-12-27 |
Family
ID=7228888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14112/67A Expired GB1138004A (en) | 1966-04-01 | 1967-03-28 | Improvements relating to extractive-distillation |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3445537A (en) |
| BE (1) | BE695567A (en) |
| DE (1) | DE1545318B1 (en) |
| FR (1) | FR1514023A (en) |
| GB (1) | GB1138004A (en) |
| NL (1) | NL6704639A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4692179A (en) * | 1982-05-03 | 1987-09-08 | Advanced Extraction Technologies, Inc. | Process for using alkyl substituted C8-C10 aromatic hydrocarbons as preferential physical solvents for selective processing of hydrocarbon gas streams |
| US4617038A (en) * | 1985-07-26 | 1986-10-14 | El Paso Hydrocarbons Company | Process for using preferential physical solvents for selective processing of hydrocarbon gas streams |
| US5009772A (en) * | 1989-02-27 | 1991-04-23 | Kerr-Mcgee Corporation | Solvent extraction process |
| US5573645A (en) * | 1995-06-29 | 1996-11-12 | Mobil Oil Corporation | Process and apparatus for the separation of aromatic hydrocarbons |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2834822A (en) * | 1958-05-13 | Toluene | ||
| US2215915A (en) * | 1937-08-17 | 1940-09-24 | Standard Oil Co California | Selective solvent extraction of petroleum |
| US2434424A (en) * | 1942-03-10 | 1948-01-13 | Shell Dev | Plural stage extractive distillation with inverse solvents |
| US2455803A (en) * | 1944-02-11 | 1948-12-07 | Shell Dev | Extractive distillation process |
| US2837585A (en) * | 1954-02-23 | 1958-06-03 | Union Carbide Corp | Separation of aromatics and aliphatics using alkylene carbonate |
| US2981662A (en) * | 1958-05-05 | 1961-04-25 | Shell Oil Co | Extractive distillation of aromatic compounds |
| US2981663A (en) * | 1958-05-05 | 1961-04-25 | Shell Oil Co | Extractive distillation of aromatic compounds |
| US3227632A (en) * | 1962-10-22 | 1966-01-04 | Koppers Co Inc | Recovery of aromatic hydrocarbon by extractive distillation with anhydrous liquid propylene carbonate |
-
1966
- 1966-04-01 DE DE19661545318 patent/DE1545318B1/en active Pending
-
1967
- 1967-03-14 FR FR98594A patent/FR1514023A/en not_active Expired
- 1967-03-16 BE BE695567D patent/BE695567A/xx unknown
- 1967-03-28 GB GB14112/67A patent/GB1138004A/en not_active Expired
- 1967-03-31 NL NL6704639A patent/NL6704639A/xx unknown
- 1967-04-03 US US627788A patent/US3445537A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3445537A (en) | 1969-05-20 |
| NL6704639A (en) | 1967-10-02 |
| BE695567A (en) | 1967-09-01 |
| FR1514023A (en) | 1968-02-16 |
| DE1545318B1 (en) | 1970-05-14 |
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