FR2187377A1 - Extractive distillation - giving high yield of aromatic hydrocarbons - Google Patents
Extractive distillation - giving high yield of aromatic hydrocarbonsInfo
- Publication number
- FR2187377A1 FR2187377A1 FR7220586A FR7220586A FR2187377A1 FR 2187377 A1 FR2187377 A1 FR 2187377A1 FR 7220586 A FR7220586 A FR 7220586A FR 7220586 A FR7220586 A FR 7220586A FR 2187377 A1 FR2187377 A1 FR 2187377A1
- Authority
- FR
- France
- Prior art keywords
- extractive distillation
- aromatic hydrocarbons
- solvent
- aromatic
- stream
- 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.)
- Granted
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
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/08—Azeotropic or extractive distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/40—Extractive distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (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
An extractive distillation method for separating aromatic hydrocarbons from a mixture containing also non-aromatic hydrocarbons consists of combining a hot solvent with the mixt. in an extractive distillation zone, thus producing an aromatic-rich extract. stream and a non-aromatic raffinate top fraction. Water is stripped from a solvent-Contg. dild. aq. stream in a pressurised stripper zone. The quantity of aromatic hydrocarbons removed in the non-aromatic top fraction is controlled as follows: (a) at least a portion of the hot solvent is passed through a reheater to the water stripper zone, where at least a portion of the diltd. solvent-contg. aq. stream is evapd. and the hot solvent is cooled; (b) at least a portion of this cooled solvent is recycled to the upper part of the extractive distillation column.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722225994 DE2225994C3 (en) | 1972-05-29 | Extractive distillation process for the separation of aromatic hydrocarbons from mixtures with non-aromatics | |
FR7220586A FR2187377A1 (en) | 1972-05-29 | 1972-06-08 | Extractive distillation - giving high yield of aromatic hydrocarbons |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722225994 DE2225994C3 (en) | 1972-05-29 | Extractive distillation process for the separation of aromatic hydrocarbons from mixtures with non-aromatics | |
FR7220586A FR2187377A1 (en) | 1972-05-29 | 1972-06-08 | Extractive distillation - giving high yield of aromatic hydrocarbons |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2187377A1 true FR2187377A1 (en) | 1974-01-18 |
FR2187377B1 FR2187377B1 (en) | 1976-01-16 |
Family
ID=25763335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7220586A Granted FR2187377A1 (en) | 1972-05-29 | 1972-06-08 | Extractive distillation - giving high yield of aromatic hydrocarbons |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2187377A1 (en) |
-
1972
- 1972-06-08 FR FR7220586A patent/FR2187377A1/en active Granted
Non-Patent Citations (1)
Title |
---|
NEANT * |
Also Published As
Publication number | Publication date |
---|---|
FR2187377B1 (en) | 1976-01-16 |
DE2225994B2 (en) | 1977-05-18 |
DE2225994A1 (en) | 1973-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |