GB812114A - Solvent extraction process - Google Patents
Solvent extraction processInfo
- Publication number
- GB812114A GB812114A GB31813/57A GB3181357A GB812114A GB 812114 A GB812114 A GB 812114A GB 31813/57 A GB31813/57 A GB 31813/57A GB 3181357 A GB3181357 A GB 3181357A GB 812114 A GB812114 A GB 812114A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- column
- via line
- feed
- paraffinic
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
- C10G21/02—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents with two or more solvents, which are introduced or withdrawn separately
- C10G21/04—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents with two or more solvents, which are introduced or withdrawn separately by introducing simultaneously at least two immiscible solvents counter-current to each other
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Naphtha fractions are separated into their aromatic and paraffinic constituents by solvent extraction with a specified selective solvent for aromatic hydrocarbons and a paraffinic co-solvent, both the solvent and the co-solvent having a boiling point at least 50 DEG F. above the <PICT:0812114/III/1> end boiling point of the petroleum oil. The aromatics are recovered from the solvent phase and the paraffins from the cosolvent phase by distillation and the solvent and co-solvent are recycled to the extraction zone. The specified solvents are the alkane dinitriles, dimethyl hydantoin, N-alkyl pyrrolidones, gamma butyrolactone, the cyanoethers of diethylene glycol, and tri- and tetraethylene glycol. The preferred co-solvents are straight- or singly-branched chain C10-16 hydrocarbon fractions boiling between 350 DEG and 550 DEG F. The extraction zone may be operated at 50 DEG to 300 DEG F. with a solvent : feed ratio of 0.5-2:1 and a cosolvent : solvent ratio of 0.1-1:1. Feed is introduced through line 2, passing through preheater 4 to the middle of extraction column 6. Solvent esters at the top of the column from line 22 passes downwards dissolving the aromatic constituents of the feed, and is removed from the bottom of the column via line 24 and passed to distillation column 32. In column 32 the aromatic extract is distilled off and removed via line 34 while the solvent is passed via lines 36 and 28 to separator 30. The cosolvent enters at the bottom of column 6 via line 14, passes upwards dissolving the paraffinic fraction and is removed via line 8 and passed to distillation column 10. In column 10 the paraffinic constituents of the feed are distilled off and removed via line 26 while the co-solvent passes via line 28 to separator 30. The solvent and co-solvent separate into two phases in separator 30 and are recycled to lines 22 and 6 via lines 20 and 14 respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US812114XA | 1956-11-08 | 1956-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812114A true GB812114A (en) | 1959-04-15 |
Family
ID=22162771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31813/57A Expired GB812114A (en) | 1956-11-08 | 1957-10-11 | Solvent extraction process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812114A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1153738B (en) * | 1960-06-04 | 1963-09-05 | Metallgesellschaft Ag | Process for the separation of aromatic from non-aromatic hydrocarbons by extraction with solvents containing N-methylpyrrolidone |
| DE1180725B (en) * | 1960-07-15 | 1964-11-05 | Metallgesellschaft Ag | Process for the extraction of pure aromatics from aromatic-containing carbon mixtures by multi-stage liquid-liquid extraction |
| US3200165A (en) * | 1961-07-08 | 1965-08-10 | Metallgesellschaft Ag | Recovery of aromatic and olefinic hydrocarbons |
| US3320138A (en) * | 1962-12-22 | 1967-05-16 | Bayer Ag | Process for separating c-hydrocarbon mixtures, containing paraffinic, monoolefinic and diolefinic c-hydrocarbons by distillation with n-methylpyrrolidone |
| DE1276615B (en) * | 1961-12-23 | 1968-09-05 | Koppers Gmbh Heinrich | Process for the production of pure aromatic compounds |
| US3433849A (en) * | 1966-08-02 | 1969-03-18 | Metallgesellschaft Ag | Process for recovering pure aromatics |
| US6375802B1 (en) | 1997-09-03 | 2002-04-23 | Hfm International, Inc. | Method of retrofitting existing equipment for an improved aromatics separation process |
| US6616831B1 (en) | 1997-09-03 | 2003-09-09 | Gtc Technology Inc. | Aromatics separation process and method of retrofitting existing equipment for same |
| CN116023981A (en) * | 2021-10-27 | 2023-04-28 | 中国石油化工股份有限公司 | Method for separating C9+ heavy aromatics from heavy gasoline fraction and producing light aromatics |
-
1957
- 1957-10-11 GB GB31813/57A patent/GB812114A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1153738B (en) * | 1960-06-04 | 1963-09-05 | Metallgesellschaft Ag | Process for the separation of aromatic from non-aromatic hydrocarbons by extraction with solvents containing N-methylpyrrolidone |
| US3299158A (en) * | 1960-06-04 | 1967-01-17 | Metallgesellschaft Ag | Production of pure aromatic hydrocarbons |
| DE1180725B (en) * | 1960-07-15 | 1964-11-05 | Metallgesellschaft Ag | Process for the extraction of pure aromatics from aromatic-containing carbon mixtures by multi-stage liquid-liquid extraction |
| US3200165A (en) * | 1961-07-08 | 1965-08-10 | Metallgesellschaft Ag | Recovery of aromatic and olefinic hydrocarbons |
| DE1276615B (en) * | 1961-12-23 | 1968-09-05 | Koppers Gmbh Heinrich | Process for the production of pure aromatic compounds |
| US3320138A (en) * | 1962-12-22 | 1967-05-16 | Bayer Ag | Process for separating c-hydrocarbon mixtures, containing paraffinic, monoolefinic and diolefinic c-hydrocarbons by distillation with n-methylpyrrolidone |
| US3433849A (en) * | 1966-08-02 | 1969-03-18 | Metallgesellschaft Ag | Process for recovering pure aromatics |
| US6375802B1 (en) | 1997-09-03 | 2002-04-23 | Hfm International, Inc. | Method of retrofitting existing equipment for an improved aromatics separation process |
| US6565742B1 (en) | 1997-09-03 | 2003-05-20 | Gtc Technology Inc. | Aromatics separation process and method of retrofitting existing equipment for same |
| US6616831B1 (en) | 1997-09-03 | 2003-09-09 | Gtc Technology Inc. | Aromatics separation process and method of retrofitting existing equipment for same |
| CN116023981A (en) * | 2021-10-27 | 2023-04-28 | 中国石油化工股份有限公司 | Method for separating C9+ heavy aromatics from heavy gasoline fraction and producing light aromatics |
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