GB638564A - Process of and apparatus for obtaining finely divided precipitates - Google Patents

Process of and apparatus for obtaining finely divided precipitates

Info

Publication number
GB638564A
GB638564A GB17364/47A GB1736447A GB638564A GB 638564 A GB638564 A GB 638564A GB 17364/47 A GB17364/47 A GB 17364/47A GB 1736447 A GB1736447 A GB 1736447A GB 638564 A GB638564 A GB 638564A
Authority
GB
United Kingdom
Prior art keywords
water
benzene
jets
chamber
fed
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
GB17364/47A
Inventor
Imperial Chemical Indu Limited
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB638564A publication Critical patent/GB638564A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C1/00—Treatment of rubber latex
    • C08C1/14—Coagulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
    • B01J2/08—Gelation of a colloidal solution
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
    • 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
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation
    • B01J37/031—Precipitation

Abstract

<PICT:0638564/III/1> In a process for the precipitation of substances from their solutions by addition of an auxiliary liquid which is neither a solvent for the substance nor miscible with its solvent, a thin stream or sheet of the solution is subjected to the action of thin jets of the auxiliary liquid whereby the stream or sheet is broken up into fine drops in which the precipitatable substance is precipitated in a fine state of division. The auxiliary liquid may be preheated to evaporate the solvent and may contain an emulsifying agent. As shown, a solution of chlorinated rubber in carbon tetrachloride or of benzene hexachloride in benzene is fed into chamber A, which may be externally heated, through nozzle B as a stream which is broken up into drops by jets of water at 90-95 DEG C. from nozzles C. Hot water may also be fed through ring of jets D to trickle down the chamber walls. Evaporated carbon tetrachloride or benzene and water vapour leave at G and are separated by cooling, while the precipitated chlorinated rubber or benzene hexachloride is carried down as a suspension in water to the bottom of chamber A, whence the suspension passes to separator E, wherein the precipitate is separated from the water which is recycled. Boiling water or steam is injected as required at H to maintain the temperature and as replacement.ALSO:<PICT:0638564/IV (b)/1> As shown, a solution of benzene hexachloride in benzene is fed into chamber A, which may be externally heated, through nozzle B as a stream which is broken up into drops by jets of water at 90-95 DEG C. from nozzles C. Hot water may also be fed through ring of jets D to trickle down the chamber walls. Evaporated benzene and water vapour leave at G and are separated by cooling, while the precipitated benzene hexachloride is carried down as a suspension in water to the bottom of chamber A, whence the suspension passes to separator E, wherein the precipitate is separated from the water which is recycled. Boiling water or steam is injected as required at H to maintain the temperature and as replacement. The water may contain an emulsifying agent.
GB17364/47A 1946-07-05 1947-07-01 Process of and apparatus for obtaining finely divided precipitates Expired GB638564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE264590X 1946-07-05

Publications (1)

Publication Number Publication Date
GB638564A true GB638564A (en) 1950-06-14

Family

ID=3866796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17364/47A Expired GB638564A (en) 1946-07-05 1947-07-01 Process of and apparatus for obtaining finely divided precipitates

Country Status (3)

Country Link
CH (1) CH264590A (en)
GB (1) GB638564A (en)
NL (1) NL64786C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011875A2 (en) * 2000-08-03 2002-02-14 The Procter & Gamble Company Methods and apparatus for producing granular compositions
WO2003039729A1 (en) * 2001-11-07 2003-05-15 Advanced Phytonics Limited Method for the production of particles
US11607359B2 (en) 2016-03-02 2023-03-21 Water Pik, Inc. Actuation assembly for an oral irrigator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011875A2 (en) * 2000-08-03 2002-02-14 The Procter & Gamble Company Methods and apparatus for producing granular compositions
WO2002011875A3 (en) * 2000-08-03 2002-08-01 Procter & Gamble Methods and apparatus for producing granular compositions
US6733709B2 (en) 2000-08-03 2004-05-11 The Procter & Gamble Company Methods and apparatus for producing granular compositions
WO2003039729A1 (en) * 2001-11-07 2003-05-15 Advanced Phytonics Limited Method for the production of particles
US7740775B2 (en) * 2001-11-07 2010-06-22 Glaxo Group Limited Method for the production of particles
US11607359B2 (en) 2016-03-02 2023-03-21 Water Pik, Inc. Actuation assembly for an oral irrigator

Also Published As

Publication number Publication date
NL64786C (en)
CH264590A (en) 1949-10-31

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