WO2001019725A3 - Process and reactor for defluorinating fluorine-containing fumed silica - Google Patents

Process and reactor for defluorinating fluorine-containing fumed silica Download PDF

Info

Publication number
WO2001019725A3
WO2001019725A3 PCT/SE2000/002003 SE0002003W WO0119725A3 WO 2001019725 A3 WO2001019725 A3 WO 2001019725A3 SE 0002003 W SE0002003 W SE 0002003W WO 0119725 A3 WO0119725 A3 WO 0119725A3
Authority
WO
WIPO (PCT)
Prior art keywords
defluorinating
fluorine
reactor
fumed silica
containing fumed
Prior art date
Application number
PCT/SE2000/002003
Other languages
French (fr)
Other versions
WO2001019725A2 (en
Inventor
Goesta Lennart Flemmert
Original Assignee
Goesta Lennart Flemmert
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 Goesta Lennart Flemmert filed Critical Goesta Lennart Flemmert
Priority to AU13170/01A priority Critical patent/AU1317001A/en
Priority to EP00975067A priority patent/EP1235746A2/en
Publication of WO2001019725A2 publication Critical patent/WO2001019725A2/en
Publication of WO2001019725A3 publication Critical patent/WO2001019725A3/en

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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/087—Heating or cooling the reactor
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/003—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor in a downward flow
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/12—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183—Preparation 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
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00327—Controlling the temperature by direct heat exchange
    • B01J2208/00336—Controlling the temperature by direct heat exchange adding a temperature modifying medium to the reactants
    • B01J2208/00353—Non-cryogenic fluids
    • B01J2208/00371—Non-cryogenic fluids gaseous
    • 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
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/185—Details relating to the spatial orientation of the reactor vertical
    • 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
    • B01J2219/19—Details relating to the geometry of the reactor
    • B01J2219/194—Details relating to the geometry of the reactor round
    • B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
    • B01J2219/1943—Details relating to the geometry of the reactor round circular or disk-shaped cylindrical
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Abstract

Process and reactor for defluorinating fluorine-containing fumed silica by means of superheated water vapor in counter-flow at such a velocity that the silica does not fluidize, and at the same time increasing the thickening ability of the silica.
PCT/SE2000/002003 1999-11-09 2000-10-17 Process and reactor for defluorinating fluorine-containing fumed silica WO2001019725A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU13170/01A AU1317001A (en) 1999-11-09 2000-10-17 Process for the continuous treatment of fluorine-containing fumed silica and reactor for the implementation of this process
EP00975067A EP1235746A2 (en) 1999-11-09 2000-10-17 Process for the continuous treatment of fluorine-containing fumed silica and reactor for the implementation of this process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9904046A SE9904046D0 (en) 1999-11-09 1999-11-09 Process for the continuous treatment of fluorine containment fumed silica and reactor for the implementation of this process
SE9904046-1 1999-11-09

Publications (2)

Publication Number Publication Date
WO2001019725A2 WO2001019725A2 (en) 2001-03-22
WO2001019725A3 true WO2001019725A3 (en) 2001-08-02

Family

ID=20417652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/002003 WO2001019725A2 (en) 1999-11-09 2000-10-17 Process and reactor for defluorinating fluorine-containing fumed silica

Country Status (4)

Country Link
EP (1) EP1235746A2 (en)
AU (1) AU1317001A (en)
SE (1) SE9904046D0 (en)
WO (1) WO2001019725A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003303678A1 (en) * 2003-01-03 2004-08-10 Genzyme Corporation Urea derivatives and their use as anti-inflammatory agents

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053627A (en) * 1960-04-11 1962-09-11 Flemmert Gosta Lennart Process for the production of hydrophilic silicon dioxide
US4363792A (en) * 1980-05-19 1982-12-14 The Dow Chemical Company Defluorination of fumed silica
EP0709340A1 (en) * 1994-10-27 1996-05-01 Shin-Etsu Chemical Co., Ltd. Method for purifying fine particulate silica

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053627A (en) * 1960-04-11 1962-09-11 Flemmert Gosta Lennart Process for the production of hydrophilic silicon dioxide
US4363792A (en) * 1980-05-19 1982-12-14 The Dow Chemical Company Defluorination of fumed silica
EP0709340A1 (en) * 1994-10-27 1996-05-01 Shin-Etsu Chemical Co., Ltd. Method for purifying fine particulate silica

Also Published As

Publication number Publication date
SE9904046D0 (en) 1999-11-09
AU1317001A (en) 2001-04-17
WO2001019725A2 (en) 2001-03-22
EP1235746A2 (en) 2002-09-04

Similar Documents

Publication Publication Date Title
EP0646694A3 (en) Pipe transfer system.
AU6607494A (en) High ending, locked tie-in construction
AU1238895A (en) The use of benzazoles as UV absorbers, new benzazoles and a process for their preparation
ZA200001572B (en) Process and apparatus for the gas-phase polymerisation.
EP0657478A3 (en) An improved process for the preparation of water soluble polymer dispersion.
ITTO930005A0 (en) PLUG-IN COUPLING, FOR EXAMPLE FOR FLUID PIPES.
EP0644582A3 (en) Dry etching method.
EP0637060A3 (en) Method for forming isolated intrapolycrystalline silicon structures.
EP0661331A3 (en) Silicon-containing polymer, process for preparing the same and monomer thereof.
AU4028495A (en) Nonionic polymers for the treatment of boiler water
EP0649898A3 (en) Phase stable, thickened aqueous abrasive bleaching cleanser.
EP0617005A3 (en) Triarylamine compound, process for producing the same and electrophotographic photoreceptor using the same.
EP0647613A3 (en) Process for the preparation of highly concentrated, freely flowable, aqueous solutions of betaines.
WO2001019725A3 (en) Process and reactor for defluorinating fluorine-containing fumed silica
CY2362B1 (en) Use of 1-hydroxy-2-pyridone for the treatment of seborrheic dermatitis.
EP0619466A3 (en) Steam condenser.
GB2308840B (en) Improved apparatus for the mechanical projection of devices through tubes, etc
EP0628536A3 (en) Process for the preparation of amines.
MXPA03002926A (en) Process for the synthesis of 2,2,6,6-tetramethyl-4-oxopiperidine.
ZA9710317B (en) Process for the preparation of benzyl-ethers by use of phase transfer.
EP0636604A3 (en) Process for the preparation of substantially salt-free aqueous Bis-aminooxy-alkane solutions.
AU6130194A (en) 1,2-dithiole-3-thiones for the treatment of reverse transcriptase-dependent viral infections
EP0663207A3 (en) Process for preparation of bamboo-salt, bamboo-salt.
GR3031537T3 (en) Improved restraining element for pressure pipe joints.
HUT77015A (en) Phosphorus-modified epoxide resins, process for producing the same and their use

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000975067

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2000975067

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWW Wipo information: withdrawn in national office

Ref document number: 2000975067

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP