[go: up one dir, main page]

GB1051772A - - Google Patents

Info

Publication number
GB1051772A
GB1051772A GB1051772DA GB1051772A GB 1051772 A GB1051772 A GB 1051772A GB 1051772D A GB1051772D A GB 1051772DA GB 1051772 A GB1051772 A GB 1051772A
Authority
GB
United Kingdom
Prior art keywords
isobutylene
propylene
hydrogen bromide
bromide
feed
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.)
Active
Application number
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.)
Publication of GB1051772A publication Critical patent/GB1051772A/en
Active 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
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
    • C07C4/02—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by cracking a single hydrocarbon or a mixture of individually defined hydrocarbons or a normally gaseous hydrocarbon fraction
    • C07C4/06—Catalytic processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
    • C07C4/08—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
    • C07C4/10—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from acyclic 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
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/35—Formation of carbon-to-carbon triple bonds only
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/06—Halogens; Compounds thereof
    • C07C2527/08—Halides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

1,051,772. Allene and methyl acetylene. NATIONAL LEAD CO. Feb. 11, 1964 [March 6, 1963], No.5626/64. Heading C5E. Allene and methyl acetylene are produced by subjecting an olefin feed comprising propylene, isobutylene or an admixture thereof to a temperature above 700‹ C. for a time of 0À0005- 0À06 seconds in the presence of hydrogen bromide, cooling the resulting products to below 500‹ C. to terminate reaction, and separating the desired constituents. Hydrogen bromide is added as liquid or vapour or produced in situ from an organic, or water-soluble inorganic, bromide, such as ethyl bromide, 2-bromopropane or 1-bromobutane. The feed of pure propylene or isobutylene or a petroleum fraction, for example, may be preheated to 800- 1250‹ C. or 700-1150‹ C. in the case of propylene, isobutylene, respectively, for example by admixture with superheated steam at 1000-2000‹ C., the steam serving as inert diluent. providing a total preferred pressure of 1 atm., inhibiting coke formation, and supplying heat for endothermic reaction. Preferred molar ratios of steam to isobutylene or propylene are 10: 1 to 4: 1, and of isobutylene or propylene to hydrogen bromide, 1:1 to 15: 1. Alternatively, heating of the feed is effected by partial combustion thereof, by passage through an electric arc, or by the addition of hot inert material. Rapid cooling to 500‹ C. is effected with water, oil, coal gas or an inert powder. Hydrogen bromide is recovered and recycled. The products are separable by known methods, e.g. as disclosed in U.S.A. Specification 2,763,703.
GB1051772D 1963-03-06 Active GB1051772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US263189A US3315004A (en) 1963-03-06 1963-03-06 Process for cracking propylene and isobutylene in the presence of hbr

Publications (1)

Publication Number Publication Date
GB1051772A true GB1051772A (en)

Family

ID=23000760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1051772D Active GB1051772A (en) 1963-03-06

Country Status (7)

Country Link
US (1) US3315004A (en)
AT (1) AT250317B (en)
BE (1) BE644185A (en)
DE (1) DE1468409A1 (en)
GB (1) GB1051772A (en)
LU (1) LU45479A1 (en)
NL (1) NL6401710A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454667A (en) * 1965-07-23 1969-07-08 Chiyoda Chem Eng Construct Co Method of producing methyl acetylene and allene from propylene

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370513A (en) * 1942-02-28 1945-02-27 Dow Chemical Co Production of conjugated diolefins
US2429566A (en) * 1942-04-01 1947-10-21 Francis O Rice Cracking of olefins
US2397638A (en) * 1943-03-27 1946-04-02 Pure Oil Co Conversion of hydrocarbons
US2763703A (en) * 1952-09-29 1956-09-18 Happel John Cracking of isobutylene with steam to produce substituted acetylenes and diolefins
GB807149A (en) * 1956-07-30 1959-01-07 Bataafsche Petroleum Dehydrogenation process
US2925451A (en) * 1957-03-20 1960-02-16 Du Pont Conversion of propylene and isobutylene to allene and methylacetylene
GB868566A (en) * 1959-03-30 1961-05-17 Goodyear Tire & Rubber Cracking of olefins
DE1251305B (en) * 1959-12-04 1967-10-05 Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onder zoek ten behoeve van Nijverheid Handel en Verkeer, Den Haag Process for the production of unsaturated hydrocarbons by thermal cleavage of isobutylene
GB915447A (en) * 1960-09-29 1963-01-09 Goodyear Tire & Rubber Cracking promoters
US3207806A (en) * 1960-11-23 1965-09-21 Petro Tex Chem Corp Dehydrogenation process

Also Published As

Publication number Publication date
NL6401710A (en) 1964-09-07
DE1468409A1 (en) 1969-10-23
BE644185A (en) 1964-08-21
LU45479A1 (en) 1964-04-20
AT250317B (en) 1966-11-10
US3315004A (en) 1967-04-18

Similar Documents

Publication Publication Date Title
US2985698A (en) Process for pyrolyzing hydrocarbons
GB1504776A (en) Hydrocracking c3 or higher hydrocarbon feedstock
GB1233795A (en)
US2925335A (en) Process for the gasification of carbonaceous solid fuel at constant volume
US2674635A (en) Production of aromatics from petroleum
GB1051772A (en)
US2394849A (en) Process for treating hydrocarbons
GB1475738A (en) Thermal cracking of hydrocarbons
GB1443277A (en) Process for producing methane-rich gases from hydrocarbons
US2176962A (en) Process for producing ethylene from oil
US3161695A (en) Process for making acetylene
US2763703A (en) Cracking of isobutylene with steam to produce substituted acetylenes and diolefins
US3140323A (en) Process for production of acetylene and other products by partial combustion of hydrocarbons
GB1270074A (en) Method of thermal cracking of hydrocarbons
GB1067957A (en) Process for the production of olefins
US1987007A (en) Process for converting hydrocarbons
US2434403A (en) Process for producing cyclopentadiene
GB994278A (en) Process for the production of gases containing methane from hydrocarbons
US2964384A (en) Process for the production of hydrogen cyanide
GB672165A (en) Improvements in or relating to process for generating synthesis gas
GB1149975A (en) Separating acetylene and ethylene from gas mixtures
GB481835A (en) An improved process of gasifying oil or tar, with or without admixture coal and like carbonaceous materials containing cyclic hydrocarbons
GB1154322A (en) Process for the Hydrogenation of Coal
GB671635A (en) Hydrocarbon conversion process for producing unsaturated hydrocarbons, particularly ethylene
US2542487A (en) Production of olefins from oxides