GB677480A - Polymerization of normally gaseous olefines - Google Patents

Polymerization of normally gaseous olefines

Info

Publication number
GB677480A
GB677480A GB13881/50A GB1388150A GB677480A GB 677480 A GB677480 A GB 677480A GB 13881/50 A GB13881/50 A GB 13881/50A GB 1388150 A GB1388150 A GB 1388150A GB 677480 A GB677480 A GB 677480A
Authority
GB
United Kingdom
Prior art keywords
acid
mol
concentration
phosphoric acid
per cent
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
GB13881/50A
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.)
California Research LLC
Original Assignee
California Research LLC
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 California Research LLC filed Critical California Research LLC
Publication of GB677480A publication Critical patent/GB677480A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
    • C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
    • C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
    • C07C2/08—Catalytic processes
    • C07C2/14—Catalytic processes with inorganic acids; with salts or anhydrides of acids
    • C07C2/18—Acids of phosphorus; Salts thereof; Phosphorus oxides
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B01J2219/0236—Metal based
    • 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
    • C07C2527/14—Phosphorus; Compounds thereof
    • C07C2527/16—Phosphorus; Compounds thereof containing oxygen
    • C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
    • C07C2527/173—Phosphoric acid or other acids with the formula Hn+2PnO3n+1

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

In polymerizing normally gaseous olefins with concentrated liquid phosphoric acid in a polymerization zone presenting acid-resistant metallic surfaces, corrosion thereof is decreased by maintaining the concentration of phosphoric acid esters of olefins in the reaction mixture below 0.08 mol. per mol. of free phosphoric acid. Ethylene, propylene, and butylenes may be polymerized with phosphoric acid of above about 90 per cent, calculated as ortho acid, at 150-450 DEG F., above 100 p.s.i.g., and space velocities above 0.5 vol. liquid olefin/vol. catalyst/hour. Ester concentration gradually increases to an equilibrium value. The mixture of acid and hydrocarbons leaving the reactor is stratified, the hydrocarbon being neutralized and utilized for motor fuel while the acid layer is recycled after part thereof is heated to about 500 DEG F., if desired at atmospheric or lower pressure, to decompose contained esters. Ester concentration may also be controlled by reducing the olefin feed rate which is ordinarily 0.5-20 v./v./hour, to a figure within this range to bring the concentration below 0.08 mol./mol. acid. Alternatively, or additionally, temperature may be raised to decrease the ester concentration. The relation between ester concentration and corrosion rates of silver and a high nickel, molybdenum, iron alloy is illustrated using an initial acid of 103 per cent, calculated as orthophosphoric, and temperature of 300 DEG F., with a feed containing 28-45 per cent propylene. Corrosion rates of high chrome-nickel austenitic alloys and copper are also given.
GB13881/50A 1949-06-04 1950-06-02 Polymerization of normally gaseous olefines Expired GB677480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677480XA 1949-06-04 1949-06-04

Publications (1)

Publication Number Publication Date
GB677480A true GB677480A (en) 1952-08-13

Family

ID=22078132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13881/50A Expired GB677480A (en) 1949-06-04 1950-06-02 Polymerization of normally gaseous olefines

Country Status (1)

Country Link
GB (1) GB677480A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237175A1 (en) * 1986-02-05 1987-09-16 Exxon Chemical Patents Inc. Improved process for reducing fouling in higher olefin plants
WO2002049754A1 (en) * 2000-12-21 2002-06-27 Solarworld Aktiengesellschaft Fluidised bed reactor made of a nickel-chrome-molybdenum-alloy for the synthesis of trichlorosilane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237175A1 (en) * 1986-02-05 1987-09-16 Exxon Chemical Patents Inc. Improved process for reducing fouling in higher olefin plants
WO2002049754A1 (en) * 2000-12-21 2002-06-27 Solarworld Aktiengesellschaft Fluidised bed reactor made of a nickel-chrome-molybdenum-alloy for the synthesis of trichlorosilane

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