GB1354716A - Process for the production and recovery of ortho-xylene para- xylene and ethylbenzene - Google Patents
Process for the production and recovery of ortho-xylene para- xylene and ethylbenzeneInfo
- Publication number
- GB1354716A GB1354716A GB1354716DA GB1354716A GB 1354716 A GB1354716 A GB 1354716A GB 1354716D A GB1354716D A GB 1354716DA GB 1354716 A GB1354716 A GB 1354716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- xylene
- ethylbenzene
- adsorbent
- zone
- isomerization
- 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
1354716 Separating C 8 aromatics UNIVERSAL OIL PRODUCTS CO 1 Oct 1971 45732/71 Heading C5E A process for separating a mixture of xylene isomers and ethylbenzene comprises (a) contacting the mixture with a crystalline aluminosilicate adsorbent in a first adsorption zone thereby selectively retaining either o-xylene and mxylene or p-xylene and ethylbenzene in the adsorbent; (b) separately recovering non-retained material and retained material; (c) passing at least part of the m/o xylene stream from (b) to an isomerization zone to produce p-xylene and/or ethylbenzene; (d) recovering o-xylene from the isomerization zone effluent; (e) recycling at least part of the remaining isomerization zone effluent to (a); (f) contacting at least part of the pzylene/ethylbenzene stream from (b) with a crystalline aluminosilicate adsorbent in a second adsorption zone and thereby selectively retaining either p-xylene or ethylbenzene; and (g) recovering from (f) enriched p-xylene and ethylbenzene streams. The adsorbent in each zone may be a type X or Y zeolite containing one or two cations selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Cu, Ag, Zn, Cd and Mn. The isomerization catalyst may comprise Pd and Cl on an Al 2 O 3 base which contains 3-5% mordenite.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4573271 | 1971-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1354716A true GB1354716A (en) | 1974-06-05 |
Family
ID=10438354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1354716D Expired GB1354716A (en) | 1971-10-01 | 1971-10-01 | Process for the production and recovery of ortho-xylene para- xylene and ethylbenzene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1354716A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376226A (en) * | 1982-02-05 | 1983-03-08 | Exxon Research & Engineering Co. | Process for the separation of ortho aromatic isomers by selective adsorption |
| US4670618A (en) * | 1986-02-10 | 1987-06-02 | Phillips Petroleum Company | Process for improved recovery of paraxylene |
| US4778946A (en) * | 1982-09-28 | 1988-10-18 | Exxon Research And Engineering Company | Process for separating ethylbenzene from feedstream containing metaxylene using a zeolite adsorbent |
| EP0574999A1 (en) * | 1992-06-15 | 1993-12-22 | ENICHEM S.p.A. | Process for separating mixtures of aromatic C8 hydrocarbons |
| CN114874064A (en) * | 2022-03-22 | 2022-08-09 | 宁波中金石化有限公司 | High-yield C 8 Aromatic hydrocarbon adsorption separation method |
| WO2023142770A1 (en) * | 2022-01-26 | 2023-08-03 | 浙江大学杭州国际科创中心 | Method for preferential adsorption and separation of ethylbenzene from c8 aromatic hydrocarbon isomeride mixture |
-
1971
- 1971-10-01 GB GB1354716D patent/GB1354716A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376226A (en) * | 1982-02-05 | 1983-03-08 | Exxon Research & Engineering Co. | Process for the separation of ortho aromatic isomers by selective adsorption |
| US4778946A (en) * | 1982-09-28 | 1988-10-18 | Exxon Research And Engineering Company | Process for separating ethylbenzene from feedstream containing metaxylene using a zeolite adsorbent |
| US4670618A (en) * | 1986-02-10 | 1987-06-02 | Phillips Petroleum Company | Process for improved recovery of paraxylene |
| EP0574999A1 (en) * | 1992-06-15 | 1993-12-22 | ENICHEM S.p.A. | Process for separating mixtures of aromatic C8 hydrocarbons |
| US5510562A (en) * | 1992-06-15 | 1996-04-23 | Enichem S.P.A. | Process for separating mixtures of aromatic C8 hydrocarbons |
| WO2023142770A1 (en) * | 2022-01-26 | 2023-08-03 | 浙江大学杭州国际科创中心 | Method for preferential adsorption and separation of ethylbenzene from c8 aromatic hydrocarbon isomeride mixture |
| CN114874064A (en) * | 2022-03-22 | 2022-08-09 | 宁波中金石化有限公司 | High-yield C 8 Aromatic hydrocarbon adsorption separation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |