EP2707525A1 - Verfahren zur herstellung von kohlefasern - Google Patents

Verfahren zur herstellung von kohlefasern

Info

Publication number
EP2707525A1
EP2707525A1 EP12717265.8A EP12717265A EP2707525A1 EP 2707525 A1 EP2707525 A1 EP 2707525A1 EP 12717265 A EP12717265 A EP 12717265A EP 2707525 A1 EP2707525 A1 EP 2707525A1
Authority
EP
European Patent Office
Prior art keywords
hydrocyanic acid
carbon fibers
cyanide
hydroxide solution
alkaline medium
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Withdrawn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
EP12717265.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Berghahn
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.)
Evonik Operations GmbH
Original Assignee
Evonik Degussa GmbH
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 Evonik Degussa GmbH filed Critical Evonik Degussa GmbH
Publication of EP2707525A1 publication Critical patent/EP2707525A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/08—Simple or complex cyanides of metals
    • C01C3/10—Simple alkali metal cyanides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D01D13/02—Elements of machines in combination
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/04—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of synthetic polymers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/32—Apparatus therefor
    • D01F9/328—Apparatus therefor for manufacturing filaments from polyaddition, polycondensation, or polymerisation products
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Definitions

  • the invention relates to a process for the production of carbon fibers, in which
  • Polyacrylonitrile (PAN) is charred pyrolytically with the release of hydrogen cyanide (HCN) to carbon fibers and a plant for carrying out the process.
  • HCN hydrogen cyanide
  • PAN polyacrylonitrile
  • hydrocyanic acid is toxic and can not be released into the environment
  • the prior art hydrocyanic acid is separated from the furnace atmosphere and burned.
  • the resulting heat is used to preheat the Ofen ownedgutes.
  • the resulting in the combustion of hydrogen cyanide nitrogen oxides are added with the addition of
  • the object of the invention is to make the process more economical.
  • the invention therefore provides a process for the production of carbon fibers, in which polyacrylonitrile (PAN) is charred pyrolytically with the release of hydrocyanic acid (HCN) to carbon fibers, in which the released hydrocyanic acid is collected and to obtain a cyanide-containing brine with an alkaline medium
  • PAN polyacrylonitrile
  • HCN hydrocyanic acid
  • Hydrocyanic acid is in fact a valuable starting material for the preparation of cyanide-salt-containing alkalis, in particular for the preparation of sodium cyanide (NaCN) or potassium cyanide (KCN) -containing alkalis.
  • Sodium cyanide or potassium cyanide is again used to digest gold. With the currently high gold prices, sodium cyanide and potassium cyanide also achieve high prices, which makes it economically attractive to recycle the hydrogen cyanide which is already present in existing plants.
  • the blue acid neutralization device comprises a scrubber, which washes the hydrocyanic acid with an alkaline medium, in particular sodium hydroxide solution (NaOH) or potassium hydroxide solution (KOH).
  • the hydrogen cyanide is substituted in this respect by natural gas.
  • Sodium cyanide is preferably prepared as the alkaline medium, since sodium hydroxide solution (NaOH) is cheaper than potassium hydroxide solution.
  • the pyrolysis process in the furnace preferably takes place at temperatures between 500 and 1500 ° C. and more preferably in an inert atmosphere, in particular under nitrogen.
  • Another object of the invention is a plant for the production of carbon fibers according to the inventive method, with an oven which is adapted to produce temperatures of 500 to 1500 ° C in such a way that in the oven
  • PAN polyacrylonitrile
  • Hydrocyanic acid which has a scrubber by means of which the absorbed hydrocyanic acid can be contacted with an alkaline medium, in particular sodium hydroxide solution (NaOH) or potassium hydroxide solution (KOH), and which can be contacted with trapping agent to catch a hydrocyanic acid in contact with the alkaline medium;
  • an alkaline medium in particular sodium hydroxide solution (NaOH) or potassium hydroxide solution (KOH), and which can be contacted with trapping agent to catch a hydrocyanic acid in contact with the alkaline medium;
  • Cyanide salt-containing liquor is provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Carbon And Carbon Compounds (AREA)
EP12717265.8A 2011-05-10 2012-04-19 Verfahren zur herstellung von kohlefasern Withdrawn EP2707525A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075595A DE102011075595A1 (de) 2011-05-10 2011-05-10 Verfahren zur Herstellung von Kohlefasern
PCT/EP2012/057116 WO2012152554A1 (de) 2011-05-10 2012-04-19 Verfahren zur herstellung von kohlefasern

Publications (1)

Publication Number Publication Date
EP2707525A1 true EP2707525A1 (de) 2014-03-19

Family

ID=46017840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12717265.8A Withdrawn EP2707525A1 (de) 2011-05-10 2012-04-19 Verfahren zur herstellung von kohlefasern

Country Status (13)

Country Link
US (1) US20140147366A1 (ja)
EP (1) EP2707525A1 (ja)
JP (1) JP2014522454A (ja)
KR (1) KR20140032415A (ja)
CN (1) CN103597130A (ja)
BR (1) BR112013028741A2 (ja)
CA (1) CA2834961A1 (ja)
DE (1) DE102011075595A1 (ja)
IL (1) IL229309A0 (ja)
MX (1) MX2013013047A (ja)
RU (1) RU2013154470A (ja)
TW (1) TW201250075A (ja)
WO (1) WO2012152554A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220341A1 (de) 2012-11-08 2014-05-08 Evonik Industries Ag Kohlenstofffaserherstellung mit verbesserter Blausäuregewinnung
US10219670B2 (en) 2014-09-05 2019-03-05 Tennant Company Systems and methods for supplying treatment liquids having nanobubbles
CN113044857B (zh) * 2020-12-30 2023-05-23 重庆柒兴克米科技有限公司 高收率制取高纯氰化钠或氰化钾的生产工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US423236A (en) * 1890-03-11 Controlling device for elevators
DE41930C (de) * Dr. KNUBLAUCH in Ehrenfeld b. Köln Neuerungen in der Gewinnung von Cyanverbindungen
US111971A (en) * 1871-02-21 Improvement in fire-place grates
GB190126396A (en) * 1901-12-24 1902-12-24 Walther Feld Improvements in, and relating to, the Recovery of Hydrocyanic Acid from Gases
US2064838A (en) * 1934-02-28 1936-12-22 Horvitz Patent Holding Corp Process for the recovery of acid gases
BE793869Q (fr) * 1967-10-27 1973-05-02 Degussa Procede de production de cyanures alcalins
DE2260248C3 (de) * 1972-12-08 1981-08-27 Linde Ag, 6200 Wiesbaden Verfahren und Vorrichtung zur Entfernung von Cyanwasserstoff aus Gasen
US4526770A (en) * 1980-10-02 1985-07-02 Fiber Materials, Inc. Method of producing carbon fiber and product thereof
DE4116840A1 (de) * 1991-05-23 1992-11-26 Degussa Verfahren zur abtrennung von cyanwasserstoff aus gasen und abgasen
US5994261A (en) * 1991-08-28 1999-11-30 Ad'all Ltd. Method of producing activated carbon fiber
DE19704180C1 (de) * 1997-02-05 1998-08-20 Degussa Verfahren zur Herstellung von Alkalicyanid- und Erdalkalicyanid-Granulaten und hierbei erhältliche Alkalicyanid-Granulate hoher Reinheit
CN1202297C (zh) * 2002-03-05 2005-05-18 陈新谋 聚丙烯腈纤维预氧化及碳化新工艺及装置
US8603429B2 (en) * 2008-04-18 2013-12-10 Mitsubishi Rayon Co., Ltd. Production system and production method for carbon fiber thread
US20110104041A1 (en) * 2009-10-30 2011-05-05 Goodrich Corporation Methods and systems for hcn removal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012152554A1 *

Also Published As

Publication number Publication date
CN103597130A (zh) 2014-02-19
BR112013028741A2 (pt) 2017-01-24
RU2013154470A (ru) 2015-06-20
CA2834961A1 (en) 2012-11-15
WO2012152554A1 (de) 2012-11-15
IL229309A0 (en) 2014-01-30
KR20140032415A (ko) 2014-03-14
DE102011075595A1 (de) 2012-11-15
TW201250075A (en) 2012-12-16
MX2013013047A (es) 2014-02-17
US20140147366A1 (en) 2014-05-29
JP2014522454A (ja) 2014-09-04

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