GB1294630A - Method for separating paraxylene - Google Patents
Method for separating paraxyleneInfo
- Publication number
- GB1294630A GB1294630A GB2664971A GB2664971A GB1294630A GB 1294630 A GB1294630 A GB 1294630A GB 2664971 A GB2664971 A GB 2664971A GB 2664971 A GB2664971 A GB 2664971A GB 1294630 A GB1294630 A GB 1294630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- xylene
- mixture
- april
- molecular sieve
- desorbing
- 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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
- C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
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
1294630 Separating p-xylene IDEMITSU PETROCHEMICAL CO Ltd 19 April 1971 [15 April 1970] 26649/71 Heading C5E p-Xylene is separated from a hydrocarbon mixture, e.g. a thermally cracked gasoline or reformate, by passing the mixture through a type X molecular sieve of pore diameter 10- 13 Š, thereby adsorbing the p-xylene on the molecular sieve; desorbing the adsorbed pxylene with an organic desorbing agent; distilling the desorbed mixture to obtain crude p-xylene of purity 70-90 wt. per cent; and crystallizing p-xylene out. The adsorption is preferably carried out at 50-250‹ C. and under sufficient pressure to maintain the liquid phase. The desorbing agent may be toluene, a polyalkylbenzene, pentane, hexane or heptane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3150970 | 1970-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1294630A true GB1294630A (en) | 1972-11-01 |
Family
ID=12333173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2664971A Expired GB1294630A (en) | 1970-04-15 | 1971-04-19 | Method for separating paraxylene |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2118332A1 (en) |
| FR (1) | FR2089639A5 (en) |
| GB (1) | GB1294630A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328125A (en) * | 1976-08-30 | 1978-03-16 | Toray Ind Inc | Adsorption isokation of xylene isomer |
| FR2757507B1 (en) * | 1996-12-20 | 1999-01-29 | Inst Francais Du Petrole | PARAXYLENE SEPARATION PROCESS COMPRISING ADSORPTION WITH WATER INJECTION AND CRYSTALLIZATION |
-
1971
- 1971-04-14 FR FR7113136A patent/FR2089639A5/fr not_active Expired
- 1971-04-15 DE DE19712118332 patent/DE2118332A1/en active Pending
- 1971-04-19 GB GB2664971A patent/GB1294630A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2089639A5 (en) | 1972-01-07 |
| DE2118332A1 (en) | 1971-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |