FI884035A0 - Förfarande för separation och rening av cellulosaetrar och andra cellulosaderivat - Google Patents

Förfarande för separation och rening av cellulosaetrar och andra cellulosaderivat

Info

Publication number
FI884035A0
FI884035A0 FI884035A FI884035A FI884035A0 FI 884035 A0 FI884035 A0 FI 884035A0 FI 884035 A FI884035 A FI 884035A FI 884035 A FI884035 A FI 884035A FI 884035 A0 FI884035 A0 FI 884035A0
Authority
FI
Finland
Prior art keywords
cellulose
purification
separation
ethers
cellulose derivatives
Prior art date
Application number
FI884035A
Other languages
English (en)
Finnish (fi)
Other versions
FI93366C (sv
FI93366B (sv
FI884035A (sv
Inventor
Wilfried Raehse
Willi Wuest
Norbert Kuehne
Original Assignee
Henkel Kgaa
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 Henkel Kgaa filed Critical Henkel Kgaa
Publication of FI884035A0 publication Critical patent/FI884035A0/sv
Publication of FI884035A publication Critical patent/FI884035A/sv
Application granted granted Critical
Publication of FI93366B publication Critical patent/FI93366B/sv
Publication of FI93366C publication Critical patent/FI93366C/sv

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/78—Handling the filter cake in the filter for purposes other than for regenerating for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/84—Handling the filter cake in the filter for purposes other than for regenerating for drying by gases or by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/885—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices with internal recirculation through the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0469—Filter tubes connected to collector tubes
    • B01D2201/0484—Filter tubes connected to collector tubes suspended from collector tubes at the upper side of the filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI884035A 1987-09-02 1988-09-01 Förfarande för separation och rening av cellulosaetrar och andra cellulosaderivat FI93366C (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873729268 DE3729268A1 (de) 1987-09-02 1987-09-02 Verfahren und anlage zur abtrennung und reinigung von celluloseethern und anderen cellulosederivaten
DE3729268 1987-09-02

Publications (4)

Publication Number Publication Date
FI884035A0 true FI884035A0 (sv) 1988-09-01
FI884035A FI884035A (sv) 1989-03-03
FI93366B FI93366B (sv) 1994-12-15
FI93366C FI93366C (sv) 1995-03-27

Family

ID=6335028

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884035A FI93366C (sv) 1987-09-02 1988-09-01 Förfarande för separation och rening av cellulosaetrar och andra cellulosaderivat

Country Status (5)

Country Link
US (1) US4963271A (sv)
EP (1) EP0305898B1 (sv)
JP (1) JPS6470502A (sv)
DE (2) DE3729268A1 (sv)
FI (1) FI93366C (sv)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175355A (en) * 1991-04-12 1992-12-29 Amoco Corporation Improved process for recovery of purified terephthalic acid
JP2620820B2 (ja) * 1991-04-12 1997-06-18 アモコ・コーポレーション 還元して精製テレフタル酸を調製するのに適する粗製テレフタル酸の調製方法
DE4134662A1 (de) * 1991-10-19 1993-04-22 Henkel Kgaa Verfahren zum abtrennen von celluloseether und anderen cellulosederivaten
US5389244A (en) * 1993-06-21 1995-02-14 Cranston; Michael T. Pressure and vacuum filtration and washing device
IT1282718B1 (it) * 1996-02-29 1998-03-31 Movengineering S R L Procedimento ed apparecchiatura per la pulizia in situ,senza rimozione degli elementi filtranti,di filtri sporchi di polimeri
DE59801854D1 (de) * 1997-01-21 2001-11-29 Wolff Walsrode Ag Verfahren zur herstellung von feinteiligen polysaccharidderivaten
DE10053649A1 (de) * 2000-10-28 2002-05-16 Urs Rothenbach Filtereinrichtung
EP1205226A1 (de) * 2000-11-07 2002-05-15 Knoll Maschinenbau Gmbh Vorrichtung zur Filtrierung von Verunreinigungen enthaltenden Flüssigkeiten
KR100461564B1 (ko) * 2001-11-24 2004-12-14 삼성정밀화학 주식회사 셀룰로스에테르의 제조방법
US7517581B2 (en) 2003-09-26 2009-04-14 Parker-Hannifin Corporation Semipermeable hydrophilic membrane
KR101137639B1 (ko) * 2004-11-02 2012-04-19 신에쓰 가가꾸 고교 가부시끼가이샤 수용성 셀룰로오스 에테르의 분리 방법
US7610025B2 (en) 2005-03-29 2009-10-27 Qualcomm Incorporated Antenna array pattern distortion mitigation
EP1764373B1 (de) 2005-09-17 2016-04-27 Dow Global Technologies LLC Verfahren zur Herstellung von Methylhydroxyalkylcellulose mit einer geringen Anzahl gefärbter Partikel
JP5174332B2 (ja) * 2006-07-13 2013-04-03 アサヒビール株式会社 キャンドル式濾過機におけるエレメントの異常を検出する方法
DE102006042438A1 (de) * 2006-09-09 2008-03-27 Wolff Cellulosics Gmbh & Co. Kg Verfahren zur Wäsche von Polysaccharidderivaten
US8309711B2 (en) * 2009-08-07 2012-11-13 Corn Products Development Inc. Filtration of corn starch followed by washing and collection of the resultant corn starch cake
KR101324897B1 (ko) 2011-12-09 2013-11-04 도레이첨단소재 주식회사 폴리에스테르 제조용 폴리머 필터의 세정방법
EP2733154B1 (en) 2012-11-16 2015-06-17 Shin-Etsu Chemical Co., Ltd. Method for producing purified low-substituted hydroxypropyl cellulose
US20170072344A1 (en) * 2015-09-10 2017-03-16 19346124 Ontario Inc. Methods and systems for dewatering solid particles in a contaminated liquid mixture
CN108697946A (zh) * 2015-12-11 2018-10-23 增强设备有限责任公司 用于固液分离的真空过滤系统和用于过滤固体颗粒的工艺
CA3102456A1 (en) * 2018-06-13 2019-12-19 Cargill, Incorporated Liquid discharge filter and its use
US20240318514A1 (en) * 2023-03-21 2024-09-26 Saudi Arabian Oil Company Systems and methods for operating candle filters to recover glycols from drilling operations

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451999A (en) * 1965-11-10 1969-06-24 Du Pont Removing aromatic hydrocarbons from carboxymethyl cellulose
US4152267A (en) * 1977-06-08 1979-05-01 Envirotech Corporation Rotary disc vacuum filter
DE3044696A1 (de) * 1980-11-27 1982-06-24 Bayer Ag, 5090 Leverkusen Reinigung von cellulose- und staerkeethern
ATE27407T1 (de) * 1984-03-08 1987-06-15 Heinz Schumacher Verfahren und vorrichtung zur reinigung von filterelementen, insbesondere filterkerzen.
US4581446A (en) * 1985-03-15 1986-04-08 The Dow Chemical Company Purification of cellulose ethers
FR2588765B1 (fr) * 1985-10-17 1988-01-15 Gaudfrin Guy Filtre pour liquides charges de particules solides et installation de filtration comprenant un tel filtre
US4790935A (en) * 1986-11-26 1988-12-13 Johnson Willard L Filter leaf assembly with bonded spacer and sealer

Also Published As

Publication number Publication date
US4963271A (en) 1990-10-16
JPS6470502A (en) 1989-03-16
DE3729268A1 (de) 1989-03-16
EP0305898A3 (en) 1990-03-07
EP0305898B1 (de) 1992-05-20
FI93366C (sv) 1995-03-27
DE3871290D1 (de) 1992-06-25
EP0305898A2 (de) 1989-03-08
FI93366B (sv) 1994-12-15
FI884035A (sv) 1989-03-03

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Legal Events

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BB Publication of examined application
PC Transfer of assignment of patent

Owner name: AQUALON COMPANY

MM Patent lapsed

Owner name: AQUALON COMPANY