GB1354716A – Process for the production and recovery of ortho-xylene para- xylene and ethylbenzene
– Google Patents
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 ethylbenzene
Info
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
1971-10-01
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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universal Oil Products Co
Original Assignee
Universal Oil Products Co
Priority date (The priority date 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 date listed.)
1971-10-01
Filing date
1971-10-01
Publication date
1974-06-05
1971-10-01
Application filed by Universal Oil Products Co
filed
Critical
Universal Oil Products Co
1974-06-05
Publication of GB1354716A
publication
Critical
patent/GB1354716A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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.
GB1354716D
1971-10-01
1971-10-01
Process for the production and recovery of ortho-xylene para- xylene and ethylbenzene
Expired
GB1354716A
(en)
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)
* Cited by examiner, † Cited by third party
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)
* Cited by examiner, † Cited by third party
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
1974-10-09
PS
Patent sealed
1981-05-13
PCNP
Patent ceased through non-payment of renewal fee
