IE38965B1 - Process for recovering aromatic hydrocarbons - Google Patents
Process for recovering aromatic hydrocarbonsInfo
- Publication number
- IE38965B1 IE38965B1 IE02107/73A IE210773A IE38965B1 IE 38965 B1 IE38965 B1 IE 38965B1 IE 02107/73 A IE02107/73 A IE 02107/73A IE 210773 A IE210773 A IE 210773A IE 38965 B1 IE38965 B1 IE 38965B1
- Authority
- IE
- Ireland
- Prior art keywords
- water
- column
- stream
- recycled
- aromatic hydrocarbons
- Prior art date
Links
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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
1432690 Extractive distillation SNAMPROGETTI SpA 23 Nov 1973 [29 Nov 1972] 54612/73 Heading C5E Aromatic hydrocarbon 14 is recovered from a feed 1 which comprises at least 80% by weight of aromatic hydrocarbons by subjecting the feed to extractive distillation in a column 2 at 50-200 C. with a solvent mixture 19 comprising water and an organic solvent to produce an overhead 3, which is condensed and separated into a water stream 8 which is recycled, together with a portion of the non-aromatics, to the column 2 at one or more points above the point at which the feed 1 and the solvent mixture 19 is fed, and a bottom 9 comprising the purified aromatic hydrocarbons, organic solvent and water; the bottoms 9 is rectified in a column 11 to separate an overhead 20 and a bottoms 17, comprising organic solvent and water, which is recycled to the column 2 as the stream 19. The overhead 20 can be condensed and separated into a water stream, which is in part recycled as the stream 15 and in part vaporized at 18 and recycled as the stream 16, and the aromatic product 14. The solvent can comprise N-formyl morpholine, 2-formyl morpholine, 3-formyl morpholine and morpholine-acetone and suitably contains 0 5-25 wt. per cent water. As illustrated in Fig. 2 (not shown) the extractive distillation and rectification can be carried out in upper and lower portions respectively of a single column. The examples relate to the separation of an artificial feed comprising (a) 95 wt. per cent benzene and 5% n-heptane and (b) 70% benzene, 20% toluene, 5% xylene and 5% non-aromatic hydrocarbons.
[GB1432690A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT32209/72A IT972268B (en) | 1972-11-29 | 1972-11-29 | PROCEDURE FOR THE SEPARATION OF HIGH PURITY AROMATIC HYDROCARBONS FROM MIXTURES CONTAINING THEM |
Publications (2)
Publication Number | Publication Date |
---|---|
IE38965L IE38965L (en) | 1974-05-29 |
IE38965B1 true IE38965B1 (en) | 1978-07-05 |
Family
ID=11235012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE02107/73A IE38965B1 (en) | 1972-11-29 | 1973-11-20 | Process for recovering aromatic hydrocarbons |
Country Status (30)
Country | Link |
---|---|
JP (1) | JPS5337854B2 (en) |
AR (1) | AR228935A1 (en) |
AT (1) | AT329019B (en) |
BE (1) | BE807790A (en) |
BR (1) | BR7309286D0 (en) |
CA (1) | CA1008399A (en) |
CH (1) | CH605482A5 (en) |
CS (1) | CS185632B2 (en) |
DD (1) | DD110256A5 (en) |
DE (1) | DE2359301A1 (en) |
DK (1) | DK138887B (en) |
EG (1) | EG11436A (en) |
ES (1) | ES421209A1 (en) |
FR (1) | FR2207890B1 (en) |
GB (1) | GB1432690A (en) |
IE (1) | IE38965B1 (en) |
IT (1) | IT972268B (en) |
LU (1) | LU68879A1 (en) |
MW (1) | MW6673A1 (en) |
MY (1) | MY7700090A (en) |
NL (1) | NL175170C (en) |
NO (2) | NO141048C (en) |
PH (1) | PH10502A (en) |
PL (1) | PL89532B1 (en) |
SE (1) | SE385115B (en) |
SU (1) | SU826953A3 (en) |
TR (1) | TR17574A (en) |
YU (1) | YU36140B (en) |
ZA (1) | ZA738801B (en) |
ZM (1) | ZM17973A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4690733A (en) * | 1985-03-20 | 1987-09-01 | Union Carbide Corporation | Process for the separation of hydrocarbons from a mixed feedstock |
US9005405B2 (en) | 2012-03-01 | 2015-04-14 | Cpc Corporation, Taiwan | Extractive distillation process for benzene recovery |
CN107074688B (en) * | 2014-09-05 | 2020-12-01 | Scg化学有限公司 | Separation method for C8 aromatic mixture |
ES2887401T3 (en) * | 2014-09-05 | 2021-12-22 | Scg Chemicals Co Ltd | Procedure for the improved separation of ethylbenzene |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3433849A (en) * | 1966-08-02 | 1969-03-18 | Metallgesellschaft Ag | Process for recovering pure aromatics |
JPS4919265A (en) * | 1972-05-10 | 1974-02-20 |
-
1972
- 1972-11-29 IT IT32209/72A patent/IT972268B/en active
-
1973
- 1973-11-12 YU YU2916/73A patent/YU36140B/en unknown
- 1973-11-16 ZA ZA738801A patent/ZA738801B/en unknown
- 1973-11-19 FR FR7341123A patent/FR2207890B1/fr not_active Expired
- 1973-11-20 IE IE02107/73A patent/IE38965B1/en unknown
- 1973-11-23 AR AR251141A patent/AR228935A1/en active
- 1973-11-23 MW MW66/73*UA patent/MW6673A1/en unknown
- 1973-11-23 GB GB5461273A patent/GB1432690A/en not_active Expired
- 1973-11-26 BE BE138155A patent/BE807790A/en not_active IP Right Cessation
- 1973-11-26 BR BR9286/73A patent/BR7309286D0/en unknown
- 1973-11-26 ZM ZM179/73A patent/ZM17973A1/en unknown
- 1973-11-27 PL PL1973166832A patent/PL89532B1/pl unknown
- 1973-11-27 TR TR17574A patent/TR17574A/en unknown
- 1973-11-27 DD DD174916A patent/DD110256A5/xx unknown
- 1973-11-27 EG EG444/73A patent/EG11436A/en active
- 1973-11-28 ES ES421209A patent/ES421209A1/en not_active Expired
- 1973-11-28 DE DE2359301A patent/DE2359301A1/en active Pending
- 1973-11-28 SU SU731971725A patent/SU826953A3/en active
- 1973-11-28 AT AT998173A patent/AT329019B/en not_active IP Right Cessation
- 1973-11-28 LU LU68879A patent/LU68879A1/xx unknown
- 1973-11-28 DK DK641673AA patent/DK138887B/en unknown
- 1973-11-28 CS CS7300008191A patent/CS185632B2/en unknown
- 1973-11-28 CA CA186,868A patent/CA1008399A/en not_active Expired
- 1973-11-28 NO NO4532/73A patent/NO141048C/en unknown
- 1973-11-29 NL NLAANVRAGE7316373,A patent/NL175170C/en not_active IP Right Cessation
- 1973-11-29 CH CH1680573A patent/CH605482A5/xx not_active IP Right Cessation
- 1973-11-29 JP JP13315773A patent/JPS5337854B2/ja not_active Expired
- 1973-11-29 PH PH15271A patent/PH10502A/en unknown
- 1973-11-29 SE SE7316163A patent/SE385115B/en unknown
-
1977
- 1977-12-30 MY MY90/77A patent/MY7700090A/en unknown
-
1978
- 1978-11-10 NO NO783781A patent/NO145537C/en unknown
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1410773A (en) | Hydrocarbon separation process | |
GB1227510A (en) | ||
GB1340149A (en) | Process for the recovery of isoprene from mixtures containing the same | |
GB1430481A (en) | Process for purifying benezene and toluene by extractive azeotropic distillation process for producing aromatic hydrocarbons | |
IE38965B1 (en) | Process for recovering aromatic hydrocarbons | |
GB1428228A (en) | Process for recovering saturated hydrocarbons | |
GB1271596A (en) | Process for the extraction of aromatic hydrocarbons from mixtures of aromatic and aliphatic hydrocarbons | |
GB1308736A (en) | Method of extracting aromatic hydrocarbons | |
GB1395087A (en) | Process for separating aromatic hydrocarbons | |
US2388834A (en) | Furfural purification | |
GB1308735A (en) | Method of extracting aromatic hydrocarbons | |
US3038016A (en) | Isoprene separation | |
GB1312353A (en) | Process for extracting aromatic hydrocarbons | |
US2402277A (en) | Manufacture of diolefins | |
GB719911A (en) | Purifying acrylonitrile by extractive distillation | |
GB1502323A (en) | Process for the separation of aromatic hydrocarbons from a mixed hydrocarbon feedstock | |
GB1274380A (en) | Process for the separation of hydrocarbon mixtures by extractive distillation | |
GB1391870A (en) | Process for the production of highpurity aromatics by liquid- liquid extraction and or extractive distillation from hydrocarbon mixtures | |
GB1308737A (en) | Method of extracting aromatic hydrocarbons | |
GB1343652A (en) | Process for separating aromatic hydrocarbons | |
GB1437470A (en) | Process for separating a vinyl aromatic hydrocarbon from a hydrocarbon mixture containing the same | |
GB1321465A (en) | Process for the separation of a starting mixture by means of liquid-liquid extraction | |
IE40387L (en) | Separating diolefins | |
CA1091615A (en) | Use of n-methyl-morpholine-3-one in the extractive distillation of hydrocarbons | |
GB881597A (en) | A process for separating butylenes from butane |