GB1378204A - Isomerization process - Google Patents

Isomerization process

Info

Publication number
GB1378204A
GB1378204A GB3394272A GB3394272A GB1378204A GB 1378204 A GB1378204 A GB 1378204A GB 3394272 A GB3394272 A GB 3394272A GB 3394272 A GB3394272 A GB 3394272A GB 1378204 A GB1378204 A GB 1378204A
Authority
GB
United Kingdom
Prior art keywords
bed
hydrogen
hydrocarbons
normal
zeolite
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
GB3394272A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1378204A publication Critical patent/GB1378204A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C9/00—Aliphatic saturated hydrocarbons
    • C07C9/14—Aliphatic saturated hydrocarbons with five to fifteen carbon atoms
    • C07C9/16—Branched-chain hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
    • C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
    • C07C5/2767—Changing the number of side-chains
    • C07C5/277—Catalytic processes
    • C07C5/2775—Catalytic processes with crystalline alumino-silicates, e.g. molecular sieves
    • 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)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1378204 Isomerizing hydrocarbons UNION CARBIDE CORP 20 July 1972 [21 July 1971] 33942/72 Heading C5E The normal pentane and hexane in a feedstock of mixed hydrocarbons are isomerized by mixing the feedstock with hydrogen, passing it through a reactor containing a composite catalyst comprising an isomerizing zeolite component and a hydrogenating component, condensing the effluent and passing the condensate through a bed of adsorbent selective for normal paraffins, subsequently desorbing the adsorbed normal paraffins with a stream of hydrogen, and mixing this stream of hydrogen and normal paraffins with the feed to the reactor. As shown, a light naphtha is fed through line 10 and heater 13 to tank 62, where it is mixed with hydrogen and recycled normal paraffins. This mixture is fed to isomerizer 20 which contains a zeolite-andpalladium catalyst in which the zeolite is zeolite Y and has been ion-exchanged with a rareearth compound and an ammonium salt and calcined. The effluent from the isomerizer is cooled at 70 and separated at 72 into a gasphase (hydrogen and light hydrocarbons), and a liquid-phase. This liquid passes by line 60 and heater 14 to adsorption bed 18 containing calcium zeolite A. Normal hydrocarbons are adsorbed and branched-chain hydrocarbons emerge at 24, taking with them hydrogen purged from the bed. These are cooled at 30 and separated at 32, and the branched-chain hydrocarbons recovered by line 34. Gases from both separators and make-up hydrogen from line 38 are heated at 46, and passed through bed 22 to desorb normal hydrocarbons and carry them into tank 62 for recycle. When the adsorption bed 18 is saturated, the valves shown are operated for adsorption in bed 22 and desorption from bed 18. When desorption begins, the first material to emerge from the bed is the vapour remaining in it from the adsorption step. This can be bypassed round the isomerization by line 61, and the effluent switched to tank 62 when its content of normal hydrocarbons rises.
GB3394272A 1971-07-21 1972-07-20 Isomerization process Expired GB1378204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16451771A 1971-07-21 1971-07-21

Publications (1)

Publication Number Publication Date
GB1378204A true GB1378204A (en) 1974-12-27

Family

ID=22594857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3394272A Expired GB1378204A (en) 1971-07-21 1972-07-20 Isomerization process

Country Status (6)

Country Link
BE (1) BE786580A (en)
CA (1) CA957968A (en)
FR (1) FR2150707B1 (en)
GB (1) GB1378204A (en)
IT (1) IT964739B (en)
NL (1) NL7210049A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271147A1 (en) * 1986-12-10 1988-06-15 Shell Internationale Researchmaatschappij B.V. Process for isomerization of a hydrocarbon feed stream

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210771A (en) * 1978-11-02 1980-07-01 Union Carbide Corporation Total isomerization process
US4709116A (en) * 1986-06-30 1987-11-24 Union Carbide Corporation Isomerization process and apparatus
US5026951A (en) * 1990-01-09 1991-06-25 Uop Process for paraffin isomerization with liquid phase adsorptive product separation
CA2092503C (en) * 1992-03-26 2004-07-06 Edwar S. Shamshoum Hydrocarbon conversion process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB876730A (en) * 1958-08-04 1961-09-06 Universal Oil Prod Co Production of branched-chain aliphatic hydrocarbons
GB1162969A (en) * 1968-08-19 1969-09-04 Shell Int Research A Process for Converting Hydrocarbons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271147A1 (en) * 1986-12-10 1988-06-15 Shell Internationale Researchmaatschappij B.V. Process for isomerization of a hydrocarbon feed stream

Also Published As

Publication number Publication date
BE786580A (en) 1973-01-22
FR2150707B1 (en) 1979-01-12
DE2234786A1 (en) 1973-02-01
IT964739B (en) 1974-01-31
CA957968A (en) 1974-11-19
DE2234786B2 (en) 1976-11-18
FR2150707A1 (en) 1973-04-13
NL7210049A (en) 1973-01-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee