GB1049282A - Improvements in and relating to the manufacture of oxides - Google Patents

Improvements in and relating to the manufacture of oxides

Info

Publication number
GB1049282A
GB1049282A GB3953661A GB3953661A GB1049282A GB 1049282 A GB1049282 A GB 1049282A GB 3953661 A GB3953661 A GB 3953661A GB 3953661 A GB3953661 A GB 3953661A GB 1049282 A GB1049282 A GB 1049282A
Authority
GB
United Kingdom
Prior art keywords
gas
inlets
reactor
preheated
product
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
GB3953661A
Inventor
William Noel Dear
Douglas Auguste Charles Rycke
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.)
Laporte Titanium Ltd
Original Assignee
Laporte Titanium Ltd
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
Priority to BE624372D priority Critical patent/BE624372A/xx
Priority to NL285105D priority patent/NL285105A/xx
Application filed by Laporte Titanium Ltd filed Critical Laporte Titanium Ltd
Priority to GB3953661A priority patent/GB1049282A/en
Priority to ES281981A priority patent/ES281981A1/en
Priority to DE19621442758 priority patent/DE1442758C/en
Priority to US234364A priority patent/US3361525A/en
Priority to FR914226A priority patent/FR1345178A/en
Priority to NL285105A priority patent/NL141467B/en
Publication of GB1049282A publication Critical patent/GB1049282A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/32Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with introduction into the fluidised bed of more than one kind of moving particles
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14Methods for preparing oxides or hydroxides in general
    • C01B13/20Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state
    • C01B13/22Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state of halides or oxyhalides
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14Methods for preparing oxides or hydroxides in general
    • C01B13/20Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state
    • C01B13/22Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state of halides or oxyhalides
    • C01B13/26Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state of halides or oxyhalides in the presence of a fluidised bed
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/181Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00Compounds of titanium
    • C01G23/04Oxides; Hydroxides
    • C01G23/047Titanium dioxide
    • C01G23/07Producing by vapour phase processes, e.g. halide oxidation
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00Compounds of titanium
    • C01G23/04Oxides; Hydroxides
    • C01G23/047Titanium dioxide
    • C01G23/07Producing by vapour phase processes, e.g. halide oxidation
    • C01G23/075Evacuation and cooling of the gaseous suspension containing the oxide; Desacidification and elimination of gases occluded in the separated oxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/61Micrometer sized, i.e. from 1-100 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

An oxide of titanium, zirconium, iron, aluminium or silicon is made by vapour-phase reaction of a chloride of the element with an oxidizing gas, the two gases being preheated and introduced into an empty reaction chamber through separate inlets forming a turbulent stream wherein finely divided oxide is formed; an inert particulate refractory material is introduced so as to impinge on the reactor surfaces adjacent to the gas inlets, thereby preventing the deposition of the product oxide on the surfaces. The particulate material and product oxide are carried out of the chamber in the turbulent gas stream, and are then separated. The reactant gases are preheated to temperatures such that were the gases to be mixed without reaction taking place, the temperature of the resultant mixture would be at least 700 DEG C. The gases may be preheated indirectly, or the oxidizing gas may be preheated directly by burning a fuel gas, e.g. CO, therein. The turbulence corresponds to a Reynold's flow number of at least 10,000. The particulate material is a hard solid not attacked by chlorine under reaction conditions, e.g. zircon, alumina, titania or silica, and is introduced at 75-400 ft./sec., at a lower temperature than the preheated gas but above the dew point of the chloride; particle size is - 8 to +85 mesh (B.S.S.) The material is introduced in one or both reactants, or in an inert carrier gas, e.g. N, or Cl2, 0.2 lb. material per cu. ft. gas, and a jet or jets of the particles may be formed inside or outside the reactant inlets, and may be upstream of the termination of the inlets in the reactor. The particle inlet nozzle may be fixed or movable; a movable nozzle may operate intermittently to supplement a fixed nozzle. Inlets for a reactant may be separated from inlets for the other reactant or from the reaction chamber, by an inert barrier gas stream, e.g. Cl2 or N2, preferably at 600-1000 DEG C. The reactor surfaces may be indirectly cooled, in whole or in part, by a coolant fluid, e.g. water, steam, oil, molten salt or a mixture of molten salts, and cooled parts may be made of metal, e.g. Ni or Ni alloy; uncooled parts are made of a non-metallic refractory, e.g. SiO2 or Al2O3. Detention times in the reactor are 0.01-10 secs., such detention being terminated by quenching, e.g. by mixing cooled product gas, e.g. Cl2, with the product stream, or passing the product stream through cooled tubes, or by dispersing in the stream cold particles of inert refractory material, e.g. that used in the reactor, after which the material is separated, cooled and recycled, part to the quencher and part to the reactor. The gaseous reaction products are quenched to a temperature below 900 DEG C. The product oxide is separated from the particulate material in a settling chamber and/or dry or wet cyclones. The oxidizing gas may contain oxygen, pure or in admixture, e.g. as air, or ozone, and is introduced in stoichiometric proportions \sB10%. 0.05-10% by volume of the total volume of gas introduced into the reacton zone may be water vapour, e.g. in the air. When TiO2 is being made, Al2O3 may be formed therewith by introduction of AlCl3 vapour or Al powder into the reaction chamber; similarly, SiCl4, Al2O3, SiO2, titanium oxychloride, titanium esters or hydrocarbons, which provide material for nucleation, may be introduced. The product oxide may be subsequently heated at e.g. 650 DEG C. to remove absorbed gases and decompose oxychlorides. In the examples, TiO2 is produced in the rutile form.
GB3953661A 1961-11-03 1961-11-03 Improvements in and relating to the manufacture of oxides Expired GB1049282A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE624372D BE624372A (en) 1961-11-03
NL285105D NL285105A (en) 1961-11-03
GB3953661A GB1049282A (en) 1961-11-03 1961-11-03 Improvements in and relating to the manufacture of oxides
ES281981A ES281981A1 (en) 1961-11-03 1962-10-30 Procedure for manufacturing metallic oxides (Machine-translation by Google Translate, not legally binding)
DE19621442758 DE1442758C (en) 1961-11-03 1962-10-31 Process for the production of oxides of the elements titanium, zirconium, iron, aluminum and silicon
US234364A US3361525A (en) 1961-11-03 1962-10-31 Manufacture of oxides of the elements titanium, zirconium, iron, aluminum and silicon
FR914226A FR1345178A (en) 1961-11-03 1962-11-02 Production of metal oxides by oxidation of their chlorides
NL285105A NL141467B (en) 1961-11-03 1962-11-05 PROCESS FOR PREPARING TITAN, ZIRCON, IRON, ALUMINUM AND / OR SILICON OXIDE BY CONVERSION OF THE CORRESPONDING CHLORIDE IN THE VAPOR PHASE WITH AN OXYDING GAS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3953661A GB1049282A (en) 1961-11-03 1961-11-03 Improvements in and relating to the manufacture of oxides

Publications (1)

Publication Number Publication Date
GB1049282A true GB1049282A (en) 1966-11-23

Family

ID=10410104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3953661A Expired GB1049282A (en) 1961-11-03 1961-11-03 Improvements in and relating to the manufacture of oxides

Country Status (4)

Country Link
BE (1) BE624372A (en)
ES (1) ES281981A1 (en)
GB (1) GB1049282A (en)
NL (2) NL141467B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784841A (en) * 1986-10-31 1988-11-15 Kronos Titan, Gmbh Process for the production of coarse, scrubbing aggregates of titanium dioxide particles by oxidation of titanium tetrachloride in the vapor phase and use of said aggregates for the prevention of deposit formation in the same production process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206399B (en) * 1963-04-27 1965-12-09 Bayer Ag Process for carrying out gas phase reactions
CH526333A (en) * 1967-05-19 1972-08-15 Bayer Ag Method and device for carrying out reactions between gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784841A (en) * 1986-10-31 1988-11-15 Kronos Titan, Gmbh Process for the production of coarse, scrubbing aggregates of titanium dioxide particles by oxidation of titanium tetrachloride in the vapor phase and use of said aggregates for the prevention of deposit formation in the same production process

Also Published As

Publication number Publication date
ES281981A1 (en) 1963-02-01
DE1442758A1 (en) 1969-03-13
NL141467B (en) 1974-03-15
NL285105A (en)
BE624372A (en)

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