EP2707525A1 - Verfahren zur herstellung von kohlefasern - Google Patents
Verfahren zur herstellung von kohlefasernInfo
- 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- Withdrawn
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)
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 (zh) |
EP (1) | EP2707525A1 (zh) |
JP (1) | JP2014522454A (zh) |
KR (1) | KR20140032415A (zh) |
CN (1) | CN103597130A (zh) |
BR (1) | BR112013028741A2 (zh) |
CA (1) | CA2834961A1 (zh) |
DE (1) | DE102011075595A1 (zh) |
IL (1) | IL229309A0 (zh) |
MX (1) | MX2013013047A (zh) |
RU (1) | RU2013154470A (zh) |
TW (1) | TW201250075A (zh) |
WO (1) | WO2012152554A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220341A1 (de) | 2012-11-08 | 2014-05-08 | Evonik Industries Ag | Kohlenstofffaserherstellung mit verbesserter Blausäuregewinnung |
EP3188849B1 (en) | 2014-09-05 | 2022-02-16 | 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US111971A (en) * | 1871-02-21 | Improvement in fire-place grates | ||
DE41930C (de) * | Dr. KNUBLAUCH in Ehrenfeld b. Köln | Neuerungen in der Gewinnung von Cyanverbindungen | ||
US423236A (en) * | 1890-03-11 | Controlling device for elevators | ||
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 |
DE69227490T2 (de) * | 1991-08-28 | 1999-07-15 | Ad Call Ltd., Uji, Kyoto | Verfahren zur Herstellung aktiver Kohlenstoffasern |
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 |
WO2009128541A1 (ja) * | 2008-04-18 | 2009-10-22 | 三菱レイヨン株式会社 | 炭素繊維糸条の製造装置および製造方法 |
US20110104041A1 (en) * | 2009-10-30 | 2011-05-05 | Goodrich Corporation | Methods and systems for hcn removal |
-
2011
- 2011-05-10 DE DE102011075595A patent/DE102011075595A1/de not_active Withdrawn
-
2012
- 2012-04-19 KR KR1020137032282A patent/KR20140032415A/ko not_active Application Discontinuation
- 2012-04-19 MX MX2013013047A patent/MX2013013047A/es not_active Application Discontinuation
- 2012-04-19 JP JP2014509654A patent/JP2014522454A/ja not_active Withdrawn
- 2012-04-19 CA CA2834961A patent/CA2834961A1/en not_active Abandoned
- 2012-04-19 US US14/116,780 patent/US20140147366A1/en not_active Abandoned
- 2012-04-19 CN CN201280022844.5A patent/CN103597130A/zh active Pending
- 2012-04-19 EP EP12717265.8A patent/EP2707525A1/de not_active Withdrawn
- 2012-04-19 RU RU2013154470/05A patent/RU2013154470A/ru not_active Application Discontinuation
- 2012-04-19 WO PCT/EP2012/057116 patent/WO2012152554A1/de active Application Filing
- 2012-04-19 BR BR112013028741A patent/BR112013028741A2/pt not_active IP Right Cessation
- 2012-05-07 TW TW101116206A patent/TW201250075A/zh unknown
-
2013
- 2013-11-07 IL IL229309A patent/IL229309A0/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2012152554A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20140032415A (ko) | 2014-03-14 |
WO2012152554A1 (de) | 2012-11-15 |
CA2834961A1 (en) | 2012-11-15 |
MX2013013047A (es) | 2014-02-17 |
IL229309A0 (en) | 2014-01-30 |
JP2014522454A (ja) | 2014-09-04 |
RU2013154470A (ru) | 2015-06-20 |
BR112013028741A2 (pt) | 2017-01-24 |
CN103597130A (zh) | 2014-02-19 |
TW201250075A (en) | 2012-12-16 |
DE102011075595A1 (de) | 2012-11-15 |
US20140147366A1 (en) | 2014-05-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20131028 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20140918 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20150821 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20160105 |