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
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.)
Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB1354076A publication Critical patent/GB1354076A/en
Expired legal-status Critical Current

Links

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

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

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

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
FR2131937A1 (en) 1972-11-17
DE2116370A1 (en) 1972-10-19
FR2131937B1 (en) 1975-08-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees