GB579477A - Improvements in the catalytic dehydrogenation of hydrocarbons - Google Patents

Improvements in the catalytic dehydrogenation of hydrocarbons

Info

Publication number
GB579477A
GB579477A GB7674/44A GB767444A GB579477A GB 579477 A GB579477 A GB 579477A GB 7674/44 A GB7674/44 A GB 7674/44A GB 767444 A GB767444 A GB 767444A GB 579477 A GB579477 A GB 579477A
Authority
GB
United Kingdom
Prior art keywords
stage
temperature
dehydrogenation
catalyst
minutes
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
GB7674/44A
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.)
Houdry Process Corp
Original Assignee
Houdry Process 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 Houdry Process Corp filed Critical Houdry Process Corp
Publication of GB579477A publication Critical patent/GB579477A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/321—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/26—Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/10—Heat treatment in the presence of water, e.g. steam
    • 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
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

579,477. Catalytic dehydrogenation. HOUDRY PROCESS CORPORATION. April 25, 1944, No. 7674. Convention date, March 5, 1943. Drawings to Specification. [Class 1 (i)] The catalytic dehydrogenation of hydrocarbons alternating with regeneration of catalyst in an adiabatic cycle is conducted at a temperature below that at which perfect adiabatic balance is attained, and the deficiency of heat is made up by supplying the reactant at a temperature higher than the average catalyst temperature. The temperature of adiabatic balance varies inversely as the contact time and the latter should be short enough to permit operation above 800 and preferably 900‹F. The usual catalysts may be employed, particularly chromium oxide on alumina, zirconia, or ceria. They may be pretreated with steam at 1200- 1600‹F. and a partial pressure between 1 and 30 lb. per sq in. According to an example, a catalyst comprising chromic acid on activated alumina is treated with steam at 1400‹F. and 3.25 lb. per sq. in. for ten hours and is then mixed with twice its volume of alundum. The mixture is used in a two stage process, the cycle comprising (1) dehydrogenation of butane. 5 minutes, (2) dehydrogenation of a mixture of butane and butene, 10 minutes, (3) regeneration, 10 minutes. Both reactants are supplied at 1100‹F., and the catalyst temperature attains equilibrium at 1080‹F. in the first stage and 1060‹F. in the second. The butadiene formed in the second stage is removed and the product of the first stage is used as make-up for the second.
GB7674/44A 1943-03-05 1944-04-25 Improvements in the catalytic dehydrogenation of hydrocarbons Expired GB579477A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US579477XA 1943-03-05 1943-03-05
US579102XA 1943-07-27 1943-07-27

Publications (1)

Publication Number Publication Date
GB579477A true GB579477A (en) 1946-08-06

Family

ID=26737016

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7674/44A Expired GB579477A (en) 1943-03-05 1944-04-25 Improvements in the catalytic dehydrogenation of hydrocarbons
GB15467/44A Expired GB579102A (en) 1943-03-05 1944-08-14 Improvements in the catalytic dehydrogenation of hydrocarbons

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15467/44A Expired GB579102A (en) 1943-03-05 1944-08-14 Improvements in the catalytic dehydrogenation of hydrocarbons

Country Status (1)

Country Link
GB (2) GB579477A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU547464B2 (en) * 1981-06-17 1985-10-24 Amoco Corporation Catalyst for hydrotreating hydrocarbon feed
US10246386B2 (en) * 2014-09-12 2019-04-02 Sabic Global Technologies B.V. Embedded alkane dehydrogenation systems and processes

Also Published As

Publication number Publication date
GB579102A (en) 1946-07-23

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