EP2991756A1 - Reducing foaming in agitated autoclave during polymerization process - Google Patents

Reducing foaming in agitated autoclave during polymerization process

Info

Publication number
EP2991756A1
EP2991756A1 EP14723296.1A EP14723296A EP2991756A1 EP 2991756 A1 EP2991756 A1 EP 2991756A1 EP 14723296 A EP14723296 A EP 14723296A EP 2991756 A1 EP2991756 A1 EP 2991756A1
Authority
EP
European Patent Office
Prior art keywords
cycle
agitator
during
autoclave
module
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.)
Withdrawn
Application number
EP14723296.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Leen Monster
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.)
Invista North America LLC
Original Assignee
Invista North America 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 Invista North America LLC filed Critical Invista North America LLC
Publication of EP2991756A1 publication Critical patent/EP2991756A1/en
Withdrawn legal-status Critical Current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
    • B01J19/0006—Controlling or regulating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
    • B01F33/71—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming working at super-atmospheric pressure, e.g. in pressurised vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/411—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft
    • B01F35/4111—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft at the top of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/93—Heating or cooling systems arranged inside the receptacle
    • 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
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • 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
    • B01J19/18—Stationary reactors having moving elements inside
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/99—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/0468—Numerical pressure values
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/0481—Numerical speed values
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00065—Pressure measurement
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00078—Fingers
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00081—Tubes
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00085—Plates; Jackets; Cylinders
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/0009—Coils
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00189—Controlling or regulating processes controlling the stirring velocity

Definitions

  • the disclosure herein relates to methods of reducing foaming in an agitated autoclave, and automated agitated autoclaves adapted to reduce foam while cycling the autoclave, particularly during polyamide polymerization processes, such as nylon 6,6 polymerization processes.
  • Additional steps include maintaining the relative high pressure during a second cycle at least in part by venting the agitated autoclave, and stopping or significantly reducing movement (by at least about 75%) of the agitator during at least a portion of the second cycle until a foam level within the agitated autoclave is reduced.
  • FIG. 2 is an exemplary graph depicting the relationship between agitated autoclave pressure and agitator RPM during a batch cycle in accordance with examples of the present disclosure
  • a polymer within the autoclave under certain heat and pressure profiles, a polymer can be formed that may be extruded or otherwise harvested for further use. It is noted, however, that as the polymerizable composition begins to polymerize within the autoclave, the solution or slurry will begin to thicken into a polymer. Thus, it is difficult to delineate at what point it ceases to be a
  • an agitated autoclave that includes an agitation member, such as an auger, for assisting with the polymerization process.
  • the agitator or auger assists with the process by controlling foaming while in use, providing salt flow mixing as well as continuous mixing of contents within the autoclave (no layered effect), controlling heat transfer, reducing vortex, drawing polymer through the autoclave, achieving higher productivity of autoclave vessels, providing a viscometer to measure relative viscosity (RV), etc.
  • the catalyst can be sodium hypophosphite, manganese hypophosphite sodium phenylphosphinate, sodium phenylphosphonate, potassium phenylphosphinate, potassium phenylphosphonate, hexamethylenediammonium bis-phenylphosphinate, potassium tolylphosphinate, or mixtures thereof.
  • the catalyst can be sodium hypophosphite.
  • these polymerizable polyamides may contain an antioxidant stabilizer or an antimicrobial additive as is known in the art.
  • the polymerizable composition may contain an anti-foaming additive.
  • the anti-foaming additive can be present in the polymerizable composition in an amount ranging from 1 ppm to 500 ppm by weight.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Polyamides (AREA)
EP14723296.1A 2013-05-01 2014-04-15 Reducing foaming in agitated autoclave during polymerization process Withdrawn EP2991756A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361818274P 2013-05-01 2013-05-01
PCT/US2014/034163 WO2014179049A1 (en) 2013-05-01 2014-04-15 Reducing foaming in agitated autoclave during polymerization process

Publications (1)

Publication Number Publication Date
EP2991756A1 true EP2991756A1 (en) 2016-03-09

Family

ID=50687747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14723296.1A Withdrawn EP2991756A1 (en) 2013-05-01 2014-04-15 Reducing foaming in agitated autoclave during polymerization process

Country Status (4)

Country Link
EP (1) EP2991756A1 (zh)
CN (1) CN104130398B (zh)
TW (1) TW201505705A (zh)
WO (1) WO2014179049A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104645883A (zh) * 2015-02-12 2015-05-27 东至绿洲环保化工有限公司 一种有机硅生产装置
CN108602950B (zh) * 2016-01-08 2020-12-25 英威达纺织（英国）有限公司 抑制亲水性聚酰胺制造中的泡沫形成的方法
WO2017155888A1 (en) * 2016-03-08 2017-09-14 Invista North America S.A R.L. Additive injection systems and methods
CN110773030A (zh) * 2019-11-29 2020-02-11 四川金象赛瑞化工股份有限公司 混合器加热装置
CN112757674A (zh) * 2020-12-30 2021-05-07 安徽博润纺织品有限公司 一种聚酯纤维筛网生产装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9311754D0 (en) * 1993-06-08 1993-07-28 Du Pont Canada High pressure process for the manufacture of terephthalic acid copolyamides
US6140459A (en) * 1996-08-29 2000-10-31 E. I. Du Pont De Nemours And Company Semi-crystalline, semi-aromatic copolymers with superior post-molding shrinkage and balance of mechanical performance
FR2758094B1 (fr) * 1997-01-08 1999-03-26 Alain Boulant Dispositif de brassage et d'aeration d'un liquide et d'elimination de la mousse dans une cuve de traitement de ce liquide
US20120053293A1 (en) * 2010-09-01 2012-03-01 E.I. Du Pont De Nemours And Company Salt resistant semi-aromatic copolyamides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014179049A1 *

Also Published As

Publication number Publication date
CN104130398A (zh) 2014-11-05
CN104130398B (zh) 2018-08-28
TW201505705A (zh) 2015-02-16
WO2014179049A1 (en) 2014-11-06

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