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WO1995023762A1 - Procede d'extraction de charbon actif de haute qualite a partir de joncs et/ou de paille - Google Patents

Procede d'extraction de charbon actif de haute qualite a partir de joncs et/ou de paille Download PDF

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Publication number
WO1995023762A1
WO1995023762A1 PCT/AT1995/000041 AT9500041W WO9523762A1 WO 1995023762 A1 WO1995023762 A1 WO 1995023762A1 AT 9500041 W AT9500041 W AT 9500041W WO 9523762 A1 WO9523762 A1 WO 9523762A1
Authority
WO
WIPO (PCT)
Prior art keywords
activated carbon
catalyst
raw material
straw
reeds
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.)
Ceased
Application number
PCT/AT1995/000041
Other languages
German (de)
English (en)
Inventor
Thomas Perlaky
Peter Panning
Bruno Hillinger
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.)
Bfb-Burgenlandische Forschungs- Entwicklungs- und Betriebsgesellschaft fur Biomassenutzung GmbH
Original Assignee
Bfb-Burgenlandische Forschungs- Entwicklungs- und Betriebsgesellschaft fur Biomassenutzung 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 Bfb-Burgenlandische Forschungs- Entwicklungs- und Betriebsgesellschaft fur Biomassenutzung GmbH filed Critical Bfb-Burgenlandische Forschungs- Entwicklungs- und Betriebsgesellschaft fur Biomassenutzung GmbH
Priority to AU18005/95A priority Critical patent/AU1800595A/en
Publication of WO1995023762A1 publication Critical patent/WO1995023762A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/336—Preparation characterised by gaseous activating agents
    • 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
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/318—Preparation characterised by the starting materials
    • C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor

Definitions

  • the invention relates to a novel method for obtaining high-quality activated carbon from reeds and / or straw combined with the extraction of methanol and wood vinegar by using the method according to the invention.
  • Activated carbon for use in the chemical industry is obtained in large quantities from various organic substances, such as lignite, peat, coconut shells and other biomass.
  • Activation by water vapor, CO 2 or other gases, the surface, the pore size and certain chemical properties can be influenced to a certain extent by appropriate process control.
  • the object of the present invention is to provide a method which is improved compared to the known methods.
  • This object is achieved according to the invention by a process for producing activated carbon from reeds and / or straw, in which the raw material is degassed in the first substep at a temperature of 180 to 250 ° C. and zeolites are used as catalysts.
  • the process according to the invention differs from the known process control in that the temperature range during the first outgassing phase, which begins at approx. 180 ° C, until the outgassing of the volatile components is complete.
  • the raw material is mixed with a catalytically active zeolite granulate, which increases the formation of methanol at the expense of the resulting wood vinegar and other components.
  • the use of zeolites as catalysts increases the yield of methanol and activated carbon considerably compared to known processes.
  • the granules of the catalyst granules are preferably selected so that they are screened out of the raw material and added to the new raw material before leaving the outgassing phase, so that the catalyst can be used again and repeatedly in the process.
  • the zeolite granules used as a catalyst preferably have a grain size of up to about 5 to 10 mm.
  • the organic raw material and the catalyst material are mixed in a suitable ratio and fed to a rotary kiln in premixed form.
  • the suitable ratio depends of course on the respective starting materials, the proportion of catalyst material is generally in the range of up to about 10%.
  • the raw material is subjected to a further smoldering process, which begins at 400 ° C and ends at approx. 750 ° C.
  • the raw material reaches the level of tar-free charcoal.
  • the charcoal is then introduced into the activation zone, where - depending on the silicate content of the raw material - it is converted to activated carbon with CO 2 and / or CO and / or water vapor.
  • the C0 2 or CO from the exhaust gas used for heating as well as the water vapor from the fuel cell system are used partly or entirely as activation media.
  • Shaft furnaces, fluidized bed furnaces and rotary tube furnaces are used as reactors.
  • an activated carbon quality with a surface area of 1100 to 1600 m 2 / g can be achieved, the pore distribution also being achieved in accordance with the specifications. This cannot be achieved with the known method with the raw materials reed and / or straw.
  • the methanol (up to 12% of the dry biomass compared to approx. 3% according to the known methods), which can be easily separated and purified from the other components of the carbonization gas by fractional condensation, is used in a preferred embodiment in fuel cells, such as e.g. used by Siemens ("multi-stitch process") to generate electricity. In this way, the electricity requirements of the system can be covered and electricity can still be supplied to the outside world.
  • the low-temperature outgassing step increases the yield of activated carbon by up to 15% and reduces the energy requirement by approx. 10%.
  • FIG. 1 shows a schematic representation of the system described in the example for carrying out the method according to the invention.
  • the dried and ground raw material with the catalyst granulate is fed via the silo (1) and the rotary valve (2) into the rotary kiln (4) by means of the feed screw (3). This is covered with the coat Hot gas (5) heated, the raw material temperature being kept between 180 and 250 ° C. The volatile components outgas and the catalyst promotes maximum methanol formation.
  • the raw material is removed from the rotary kiln (4) by means of lifting blades and sieve drum (6) and the catalyst is separated off and remains in the rotary kiln (4).
  • the raw material goes into the high temperature range (7).
  • the carbonization gas (13) is drawn off through the hollow axis of the feed screw (3) and brought to the fractionation (14). Here the different components of the carbonization gas are obtained separately.
  • the volatile part is burned together with the exhaust gases (17, 18).
  • the hot gas (5) is used to heat the rotary kilns (4,7) via their jacket.
  • the exhaust gas (17) goes through the de-targing (17a) beforehand. The combustion takes place in the burner (19).
  • the charcoal from the high-temperature area (7) is fed to the rotary kiln (9) for activation by means of a feed screw (8).
  • the heating takes place electrically (10), whereby the charcoal is heated to approx. 1000 ° C. C0 2 (16), the exhaust gas used (16) from the burner (19), and steam (20), the exhaust steam from the fuel cell (15) are used as activation media.
  • the finished activated carbon (12) is cooled in a cooler (11) and fed to the final processing.
  • the methanol from the fractionation (14) is fed to the fuel cell (15) and this supplies the electricity for operating the plant.
  • the surplus goes on the net.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

L'invention concerne un procédé qui permet de préparer du charbon actif de haute qualité à partir de joncs et/ou de paille. Une distillation lente à basse température spéciale effectuée dans une première étape du procédé et l'apport de catalyseurs influent sensiblement sur la composition du gaz de distillation à basse température, le dégagement gazeux, la qualité et le volume de charbon actif. L'utilisation d'un système à piles à combustible permet d'obtenir un excellent bilan énergétique.
PCT/AT1995/000041 1994-03-01 1995-03-01 Procede d'extraction de charbon actif de haute qualite a partir de joncs et/ou de paille Ceased WO1995023762A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18005/95A AU1800595A (en) 1994-03-01 1995-03-01 Method of extracting high-grade activated carbon from reeds and/or straw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT41994 1994-03-01
ATA419/94 1994-03-01

Publications (1)

Publication Number Publication Date
WO1995023762A1 true WO1995023762A1 (fr) 1995-09-08

Family

ID=3490127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1995/000041 Ceased WO1995023762A1 (fr) 1994-03-01 1995-03-01 Procede d'extraction de charbon actif de haute qualite a partir de joncs et/ou de paille

Country Status (2)

Country Link
AU (1) AU1800595A (fr)
WO (1) WO1995023762A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100069507A1 (en) * 2007-04-04 2010-03-18 Sony Corporation Porous Carbon Materials and Production Process Thereof, and Adsorbents, Masks, Adsorbing Sheets and Carriers
WO2017162914A1 (fr) * 2016-03-23 2017-09-28 Valmet Technologies Oy Procédé et système de production hydrothermique de charbon actif
CN109704334A (zh) * 2019-03-13 2019-05-03 南京工业大学 一种木质素基介孔碳材料的制备方法
WO2019104382A1 (fr) 2017-11-30 2019-06-06 The University Of Adelaide Appareil et procédé de production d'un matériau de charbon activé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273761A (en) * 1926-07-03 1928-09-27 Algemeene Norit Mij Improvements in the process of producing activated carbon
GB1451498A (en) * 1973-12-27 1976-10-06 Thompson R E S Process for recovering forest product plant wastes
DD238162A3 (de) * 1979-01-22 1986-08-13 Klaus Kossatz Verfahren zum betreiben einer anlage zur herstellung von holzkohle, koks oder aktivkohle in einem schachtofen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273761A (en) * 1926-07-03 1928-09-27 Algemeene Norit Mij Improvements in the process of producing activated carbon
GB1451498A (en) * 1973-12-27 1976-10-06 Thompson R E S Process for recovering forest product plant wastes
DD238162A3 (de) * 1979-01-22 1986-08-13 Klaus Kossatz Verfahren zum betreiben einer anlage zur herstellung von holzkohle, koks oder aktivkohle in einem schachtofen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BIOMASS ENERGY, IND. ENVIRON., E.C. CONF., 6TH, pages 1365 - 1368 *
CHEMICAL ABSTRACTS, vol. 117, no. 18, 2 November 1992, Columbus, Ohio, US; abstract no. 174413, SZOKONYA L. & AL.: "Activation carbon production in a pilot plant double-drum reactor." *
DATABASE WPI Section Ch Week 8533, Derwent World Patents Index; Class A35, AN 85-196760 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100069507A1 (en) * 2007-04-04 2010-03-18 Sony Corporation Porous Carbon Materials and Production Process Thereof, and Adsorbents, Masks, Adsorbing Sheets and Carriers
US10714750B2 (en) * 2007-04-04 2020-07-14 Sony Corporation Porous carbon materials and production process thereof, and adsorbents, masks, adsorbing sheets and carriers
US10756346B2 (en) 2007-04-04 2020-08-25 Sony Corporation Porous Carbon Material
US11545665B2 (en) 2007-04-04 2023-01-03 Sony Corporation Carbon-polymer complex
US11955638B2 (en) 2007-04-04 2024-04-09 Sony Corporation Sheet-shaped member
WO2017162914A1 (fr) * 2016-03-23 2017-09-28 Valmet Technologies Oy Procédé et système de production hydrothermique de charbon actif
WO2019104382A1 (fr) 2017-11-30 2019-06-06 The University Of Adelaide Appareil et procédé de production d'un matériau de charbon activé
EP3717406A4 (fr) * 2017-11-30 2021-08-18 Bygen Pty Ltd Appareil et procédé de production d'un matériau de charbon activé
US11731879B2 (en) 2017-11-30 2023-08-22 Bygen Pty Ltd Apparatus and method of producing activated carbon material
CN109704334A (zh) * 2019-03-13 2019-05-03 南京工业大学 一种木质素基介孔碳材料的制备方法

Also Published As

Publication number Publication date
AU1800595A (en) 1995-09-18

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