GB1354076A – Process for the recovery of substantially pure aromatics from mixtures comprising aromatics and non-aromatics
– Google Patents
GB1354076A – Process for the recovery of substantially pure aromatics from mixtures comprising aromatics and non-aromatics
– Google Patents
Process for the recovery of substantially pure aromatics from mixtures comprising aromatics and non-aromatics
Info
Publication number
GB1354076A
GB1354076A
GB1455672A
GB1455672A
GB1354076A
GB 1354076 A
GB1354076 A
GB 1354076A
GB 1455672 A
GB1455672 A
GB 1455672A
GB 1455672 A
GB1455672 A
GB 1455672A
GB 1354076 A
GB1354076 A
GB 1354076A
Authority
GB
United Kingdom
Prior art keywords
benzene
distilled
stream
bottoms
produce
Prior art date
1971-04-03
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
GB1455672A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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.)
1971-04-03
Filing date
1972-03-28
Publication date
1974-06-05
1972-03-28
Application filed by Metallgesellschaft AG
filed
Critical
Metallgesellschaft AG
1974-06-05
Publication of GB1354076A
publication
Critical
patent/GB1354076A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
C07C15/02—Monocyclic hydrocarbons
C07C15/04—Benzene
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C7/00—Purification; Separation; Use of additives
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
Abstract
1354076 Aromatic hydrocarbons METALLGESELLSCHAFT AG 28 March 1972 [3 April 1971] 14556/72 Heading C5E A mixture of aromatic and non-aromatic hydrocarbons is distilled to separate a fraction enriched in the aromatic compound (or mixture of isomers thereof ) which is present in the largest amount in the mixture, and from which this pure compound is recovered by solvent extraction or extractive distillation, and an overhead or bottoms material or a mixture of both overhead and bottoms materials is catalytically hydrodealkylated to produce a material from which benzene is recovered by distillation. Coke-oven benzene boiling between 70 and 150‹ C. and purified by hydrorefining is distilled to provide a benzene-rich overhead, which is subjected to extractive distillation to produce pure benzene, and a bottoms fraction, comprising toluene, xylenes and a small amount of benzene, which is passed to a dealkylation stage and the dealkylate product is distilled to produce pure benzene. A stream of pyrolytic gasoline is distilled to remove volatile non-aromatics and the residue is separated in a second column to provide an overhead rich in benzene which is hydrogenated prior to purification by extractive distillation and a bottoms which is hydrodealkylated to produce benzene which is recovered by distillation. A hydroformate is distilled at F1 to remove a volatile non-aromatic stream 2, a side stream 1 containing benzene and toluene, and a bottoms stream 3, which is distilled at F2 to provide a xylene fraction 4 which is purified by extractive distillation. The bottoms 5 are combined with the benzenetoluene stream 1 and hydrodealkylated to produce a benzene-containing stream which is then distilled to provide a stream 10 of pure benzene. The hydrodealkylation can be carried out at 500-800‹ C. and 30 to 80 atmospheres using a catalyst such as nickel, nickel oxide, or cobalt oxide + molybdenum oxide on alumina.
GB1455672A
1971-04-03
1972-03-28
Process for the recovery of substantially pure aromatics from mixtures comprising aromatics and non-aromatics
Expired
GB1354076A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19712116370
DE2116370A1
(en)
1971-04-03
1971-04-03
Process for obtaining pure aromatics from mixtures with non-aromatics
Publications (1)
Publication Number
Publication Date
GB1354076A
true
GB1354076A
(en)
1974-06-05
Family
ID=5803793
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1455672A
Expired
GB1354076A
(en)
1971-04-03
1972-03-28
Process for the recovery of substantially pure aromatics from mixtures comprising aromatics and non-aromatics
Country Status (3)
Country
Link
DE
(1)
DE2116370A1
(en)
FR
(1)
FR2131937B1
(en)
GB
(1)
GB1354076A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN115193082A
(en)
*
2022-09-16
2022-10-18
旭阳工程有限公司
Novel crude benzene hydrofining separation system and process
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3435084A
(en)
*
1966-06-24
1969-03-25
Phillips Petroleum Co
Combination process with biphenyl production
1971
1971-04-03
DE
DE19712116370
patent/DE2116370A1/en
active
Pending
1971-12-31
FR
FR7147748A
patent/FR2131937B1/fr
not_active
Expired
1972
1972-03-28
GB
GB1455672A
patent/GB1354076A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN115193082A
(en)
*
2022-09-16
2022-10-18
旭阳工程有限公司
Novel crude benzene hydrofining separation system and process
Also Published As
Publication number
Publication date
DE2116370A1
(en)
1972-10-19
FR2131937A1
(en)
1972-11-17
FR2131937B1
(en)
1975-08-29
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Legal Events
Date
Code
Title
Description
1974-10-02
PS
Patent sealed
1977-10-26
PLNP
Patent lapsed through nonpayment of renewal fees
