DE1646779A1 - Process for the production of carbonized fibers - Google Patents

Description

The invention relates to a method of manufacture of carbonized fibers by carbonizing fibers Lignin, which is obtained by treating wood pulp from pond wood, Hardwood, vegetation, etc. won Yrarde.

It is already known to use carbonized fibers Carbonization of cellulose fiber !! or acrylonitrile fibers below Maintaining the original shape. The disadvantage of this method, however, is the high production cost of the carbonized fibers due to the high The price of the raw materials.

That used in the method according to the invention lignin occurs as a by-product in the paper industry and is available at a very low price. Bister had- "one for this product has no practical use. It was

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now found that a fiber can be made from lignin and can carbonize them. The carbonized according to the invention Fiber can be manufactured at low cost and has in the activated state a much higher adsorption capacity

than conventional fibers "on. '. ■

The invention relates to a method for producing carbonized fibers, in which fibers (hereinafter referred to as "lignin fibers") made from alkali lignin, thiolignin or lignin sulfonate, each produced by chemical treatment of wood pulp, are heated to far above 40O ⁰ C, until extensive graphitization occurs.

The lignin fibers used as drilling material can in the form of a continuous monofiber of a short or Staple fiber, yarn or fabric, or any other suitable fiber form.

For the production of lignin fibers from the alkali lignin, thiolignin or lignin sulfonate obtained by chemical treatment of wood pulp, see conventional processes for spinning high molecular weight materials, such as the melt spinning process, the dry spinning process and the wet spinning process.-.....

In the production of lignin fibers based on the melt spinning process, the melting device is charged.

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melts with alkali lignin or ihiolignin and this by rapidly heating to an appropriate temperature between 100 and 400 ⁰ G, preferably, the melt is between 150 and 2Ö0 ° G, if necessary, while simultaneously passing an inert gas * as I2 or CGG, about the The surface of the melt is spun, the fibers are suitable for spinning. , the following process: The continuous spinning process from a small nozzle, the process for producing short fibers by passing the molten lignin through a fan operated with air or inert gas, and the process for producing short fibers by dripping the melt onto a rotating one Disc. During the manufacture of the threads, the raw material should be cleaned to remove foreign substances and to prevent the thread from breaking off before being fed into the melting device. It is convenient to use the surface of the. To cover the melt to prevent Osydationserscheinungen i during the melting process with an inert gas.

In the production of lignin fibers using the dry spinning process becomes alkali lignin, thioignin or lignin sulfonate in a solvent suitable for dissolving, e.g. 3 in Water, liatron or potassium hydroxide, etc., sulfuric or hydrochloric acid etc., dimethyl sulfoxide, glycerin etc. dissolved. The so

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The solution held is extruded from a small nozzle and then dried at a suitable temperature and this the lignin fibers. obtain. When using alkali lignin or thiolignin can be water or the above Do not use acid solutions as these two lignin compounds are insoluble in water and acid solution. Using For lignosulfonate, however, all of the solvents mentioned can be used. Suitable amounts of these solvents per hundred parts of lignin are as follows: _ ... ' Acid solution (concentration below 20 ■ #) ... 50-150 parts; Alkaline solution (concentration 5 - 20 »..; ♦ 10 - 200 parts; Water- . > .... 30-100 parts; Dime thy lsu If oxid. . . .... 100-200 parts;

Glycerin · .... 10-20 parts.

In the production of lignin fibers by dissolving of lignin in a solvent results in the addition of in these Solvents soluble polyvinyl alcohol, polyacrylonitrile or viscose in an amount that the characteristic properties of carbonized fiber from lignin disappear, too a reinforcement of the lignin fiber. Carbonized fibers Lignin fibers made with the addition of high molecular weight substances were manufactured, but have a lower strength

as such, fibers made from lignin alone on »Hence

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the addition of large amounts of high molecular weight substances is not Your amount should be appropriate, hence the amount of lignin not exceeded

In the production of lignin fibers do the let process becomes one from a solution of alkali lignin, thiolignin or lignosulfonate in a suitable solvent and a viscose solution in a light. | Spun solvent and freed from the solvent and lignin fibers obtained here

A lignin fiber produced in this way shows only slight Strength and can therefore practically not be used * However, if you carbonize this lignin fiber, you get

a carbonized fiber having a useful strength o In contrast, the strength of conventional cellulose fibers or acrylonitrile fibers decreases due to the carbonization *

The preparation of the carbonized fiber is done as (follows: The Ligninfaser is in an oxidizing atmosphere with air or ozone at 5o - 400 ° C, or in a gefchlossenen vessel at a temperature of 1QO - pretreated 400 ⁰ C, and then subjected to an inert gas at treated by less than 5O ⁰ C per minute increasing temperature.At about 40O ⁰ C a flame-resistant fiber is created, which at temperatures above 700 ⁰ C becomes a carbonized fiber with an already useful

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convertible strength »This carbonized fiber is converted into a graphitized fiber ^{during the graphitization treatment at temperatures above 2GOO 0 G»}

If preparing the carbonized Ligninfaser from fibers of Alkalillgnin, thiolignin or ligninsulfonate without any addition of high molecular weight substances, the pretreatment results in air or ozone 50-400 ⁰ C and subsequent carbonization in an inert gas in a firmer, carbonized fiber as the pretreatment in a closed vessel at 100 - 400 ⁰ C ₀

If, on the other hand carbonized fibers of alkali lignin, thiolignin or lignosulfonate with simultaneous addition of polyvinyl alcohol, polyacrylonitrile or Viscose here, we obtain the firmer carbonized fiber, if, instead of the pre-treatment in air or ozone of "50 to 400 ⁰ C, the pre-treatment in carried out in a closed vessel of 100 - 40O ⁰ C and then carbonized in an inert gasa,

An object of the invention is the manufacture of highly activated, carbonized fibers. For this purpose one only needs the activation process by chemical, .- ' alkalis or gases alone or in combination with one another

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apply * So the activation process by chemicals can be applied to various processes for the production of lignin fibers oIf the lignin fiber is produced from alkali lignin or thiolignin by the melt spinning process "how to mix sulfur", zinc chloride, etc., as an activating agent in the molten lignin in an amount less than 30 parts per 100 parts of lignin. If necessary, the melt is then spun while the surface is simultaneously covered with an inert (Jas, like K ^ o ^ ^{er argon} ~ treated and ^{carbonized at 600-1OQO 0} G "^;

In dry spinning and dry spinning, an alkaline activating agent such as sodium hydroxide or another such can be used Activating agent or an acidic activating agent such as sulfuric acid in which to dissolve the lignin applied solvents are used *

The gas activation process is useful for making carbonized fibers that are activated should. When carbonizing lignin fibers without the content of The fiber is heated in high molecular weight substances Air or ozone pretreated to 50 - 400 ° C, then all in one

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closed vessel or an inert gas for a. Increase in temperature of less than 5O ⁰ C per minute "600 - heated 1000 ⁰ C and also an activating gas such as air, oxygen, steam, etc» in an amount of 100 - blown 2000 ^cm per gram Ligninfaser, wherein an activated carbonized Fiber is created · When carbonizing lignin fibers produced with the addition of polyvinyl alcohol, polyakrilonitrile or viscose, one obtains after this. Method an activated carbonized fiber; Here treating the Ligninfaser before, heated it to 600 '1000 ° C and blows an activating gas into it or by heating the Ligninfaser at a temperature increase of less than 50 ⁰ C per min _e without pre-treatment in a closed vessel at 600 to 1000 ° G and injects an activating gas such as air, oxygen, steam ete · in an amount of 100 - »2000 ° onr" per gram of fiber · However, it is preferable to use direct activation by the activating gas, without pretreatment, since Merbei die stronger, activated carbonized fiber gets "

The carbonized fiber made in accordance with the present invention is resistant to chemicals, heat; it is electric conductive and has textile flexibility. Therefore it is suitable

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for various uses such as a filter material for acids and alkali, a material for removing dust from high temperature gases, a filler for plastic objects, electrical resistance material, electrically conductive tapes (electric ribbon). Electrodes, Packaging material and the like «

In addition, the activated carbonized fiber has a large absorption capacity and is therefore suitable as a gas adsorbent, decolorizing agent and the like »

The invention will now be explained in more detail with the aid of the following examples »

example 1

20 gf made by chemical treatment of hardwood Thiolignin rose rapidly in a steel jar.

GOo gas passed . Di e melt heated 170 ⁰ C. Over the surface of eggs was melt ^{Y v} iirch winding on a bobbin with a Geschelndigkeit 5 - 10 m / min * spun through the inert gas layer, and in this case a filamentary Ligninfaser of 20 - prepared ji 30th This fiber was 10 hours standing in air at 150 ⁰ G pretreated The pretreated fiber was

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"had been placed in a porcelain tube and into this after the air ^ gas displaced in.einem electric furnace at a rate of 5 ⁰ G / ίϊη heated to 700 ⁰ G _0, und.10 min. on. this temperature was maintained, and then left to stand at room temperature "12 grams of carbonized fiber were obtained. The ^ was black, had a tensile strength of 8 10 ^ kg / cm and an electrical thiderstana of 10 χ 10 -jicm"

Example 2

30 grams of a mixture of one part by weight Alkalilignln prepared by chemical treatment of feichholz and one part by weight alkali lignin, which had been prepared by chemical treatment of hardwood were rapidly heated in a steel vessel at 17O ⁰ G "Das, molten lignin with Help spouted out of an air blower, wherein a short fiber is obtained, which then for 7 hours maintained at 8o ° C in an ozone atmosphere and was then placed in a porcelain tube · in this tube, the fiber at a speed of 2 ⁰ C was / min "in

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an electric furnace to 1QO ⁰ C and then at a rate of 0.5 ⁰ C / min "to 15O ⁰ G ty HEATER lachdem the temperature is about 10 minutes", lanfef to 150 ⁰ C was maintained, the fiber in a, in was The graphite crucible in the Krytol electric furnace. After the air had been displaced by N2, the

ness heated .in the crucible fiber located with a velocity 'of 50 ⁰ C / min · to 2000 ⁰ C and then allowed to stand at room temperature * where 8g graphite were * · fiber having a tenacity of 7 x 10 kg / cnr and a.

electrical resistivity of 1 % 10 J \ cm was obtained.

Example 3

A mixture of 100 g ·, wurdea by chemical treatment of softwood produced alkali lignin and 15 g of sulfur in a heating device provided with the rotary drum quickly at ⁰ C for 2OG, wherein the mixture melted. The melt was centrifuged and spun from a hole in the cylinder with a diameter of 1.0 mm and a lignin fiber was obtained. This fiber was pretreated in air at 200 ° G for 10 hours, then inein

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Brought a porcelain tube and, after displacing the air with N2 "^ ^as i ^Q, heated an electric furnace to 800 ^° C. * The fiber was kept at this temperature for one hour and then left to stand at room temperature. Absorption capacity of 8 ciir and a tensile strength of; 3 χ 10 * kg / cm ² obtained * ■

fiederholt to the above process, with the modification -that "blowing air into the heated on 8OG ⁰ C fiber, and holding this temperature, we obtain 3 g of activated carbonized fiber with a Methylenblauadsorptionsvermögen of cnr and a tensile strength of 2.5 χ 1 (r kg / cm *

The methylene blue adsorptive capacity is determined as follows: That amount of a 0.12 # aqueous methylene blue solution that is added dropwise to 0.1 g of charcoal and within is decolorized by 5 min *, measured in cm, represents the methylene blue adsorption capacity

Example 4

A mixture of 100 g of thiolignin made by chemical treatment of hardwood and 25 g of powdered thiolignin

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Zinc chloride-ine-iner heated equipped with heater rotary drum quickly to 400 ⁰ C and melted. The melt was extruded through! ^ Centrifuge of a mm in the Drehtrommel'vorhandenem hole diameter of 1.0 spun and thereby obtain a Ligninfäser * This fiber was heated 10 hours in air at 2to ⁰ C, then transferred to a porcelain tube and after? he | pushing the air through Nn-Gras-.mit a speed of 2 ⁰ C / min "in an electric furnace at 800 ⁰ C. and this temperature was maintained for 1 hour» ■ DgQEi - the fiber was allowed to stand at room temperature * The yield was 42 g activated carbonized fiber with a methylene blue adsorption capacity of 10 cnr and a tensile strength of 3 χ 10 kg / cm «

Example 5

50 g of a mixture of 1 part by weight of chemical treatment of softwood produced thiolignin and 1 part by weight by chemical treatment of hardwood produced thiolignin were rapidly erhit'zt in a steel vessel at 170 ⁰ C and above the molten lignin argon gas

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glides “The melted lignin was spun from a nozzle at a speed of 5-10 m / min” and wound onto a bobbin. For pretreatment, the fiber obtained in this way was ^{heated to 150 °} C. in air for 10 hours and then transferred to a porcelain tube Bohr was sealed and placed in an electric oven. The fiber contained in the sealed vessel was then heated to 90O ⁰ C at a rate of 5 ⁰ C / min 'and * after 1500 cnr / g of air had been received at this temperature for blow', held for a further hour at this temperature and then left to stand at room temperature »This gave 6 g of carbonized fiber with a methylene blue adsorption capacity of 18 cc and a tensile strength of 2.5 x 10 kg / cm *

Example 6

50 g of a mixture of 100 Gewichtsteiien by chemical treatment of softwood produced thiolignin and 10 parts by weight glycerin was heated in a steel vessel at 150 ⁰ C, at this temperature mm under a pressure of 0.5 kg / cnr from a nozzle of 1 ₉ 0 diameter

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extruded and then with a GresehwindigkeitYon TOO m / min "The wound Ligninfaser thus obtained was 1Ö hours at 80 ⁰ C in a Ozonat-. phere allowed to stand for 5 hours and then in air at 250 ⁰ C heated "The thus treated was placed in a Ligninfaser Eorzellanrohr, after the air had been displaced by ^ gas, the fiber was present in the pipe-speed'einer .Ύοη .. '. 1 ⁰ C / min · heated in the electric furnace to 1000 ⁰ C', held at this temperature for one hour and then left to stand at room temperature. 15 g of carbonized fiber with a tensile strength of 5 x 10 kg / cm and an electrical specific resistance of 8 χ ^ Jl. & a

Example 7

30 parts by weight of calcium lignosulfonate were dissolved in 15 parts by weight of water. Furthermore, 30 weight '· parts polyvinyl alcohol in t00 parts by weight of water with warming and the two mixtures at 80 ~ 85 ⁰ C mixed "100 g of the mixture thus obtained were a from a nozzle with 0 _f 3 mm diameter at 70 ⁰ C under Pressure of 1.0 kg / cnr extruded and on a

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Coil at a speed of 70 m / MIn ₀ under. simultaneous drying coiled It was a Lrgninfaser with a diameter of 20 μ obtained This fiber was placed in a porcelain tube, sealed by this and "put in an electric furnace for the pretreatment wurde.die fiber in the closed vessel heated for 10 hours at 200 ⁰ C. After injection of NO gas. ".., the fiber was heated at a rate of 3O ⁰ C / min _e at 1500 ⁰ C and stand- then at room temperature, left Here, 35 g of carbonized fiber having a tensile strength of 3 χ 10" ^ kg / cm and an electrical specific resistance of 3 χ 10 ^ / l _: gi obtained ©

Example 8

30 parts by weight by chemical treatment of softwood = alkali lignin produced were mixed with 30 parts by weight of a 15 aqueous sodium hydroxide solution #igen and dissolved by heating the mixture to 80 ⁰ C. Furthermore, 30 parts by weight of polyvinyl alcohol were dissolved by heating in 110 parts by weight of water and the two solutions were mixed with one another ^{at a temperature above 75 ° C. «}

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100 g of the mixture obtained in this way were ^{extruded at 85 °} C. under a pressure of 1.5 kg / cm from a nozzle with a diameter of 0.2 mm and then on a bobbin at a speed of 600 m / liter while drying at the same time 25O ⁰ C wound up Here, a lignin fiber with a diameter of 15λι was obtained. This fiber was placed in a porcelain tube, the tube was closed and placed in an electric furnace, and the fiber was heated ^{to 300 ° C. in the closed vessel for 5 hours.} After blowing Ho-gas the fiber at a speed of 2 ⁰ C / min · in N2 ^ atmosphere was heated to 150o C ⁰ and then allowed to stand at room temperature "Here were 32 gcarboni-

• χ η

sized fiber with a tensile strength of 5 x 10 kg / cm and an electrical · specific resistance of 5 x 10 "cm are obtained»

Example 9

100 g of the fiber produced according to Example 8 were placed in a porcelain tube, the tube was closed and placed in an electric furnace 400 ⁰ G heated and then left to stand at room temperature

65 g of flame retardant fiber with a tensile strength

5 2
of 1.5 σ 1Cr kg / cm obtained «

Example 10 ,

100 g of fiber made from Example 8 was placed in a porcelain tube / the tube was sealed and placed in an electric oven. The fiber was heated in the closed vessel to 20O ⁰ C for 10 hours. Then it was transferred to a graphite gel and placed in a Krptol electric oven. l ^ gas was blown in and the fiber was further ^{heated to 2500 0} C and then left to stand at room temperature. Thereby, 18 g of graphite fiber with a tensile strength were obtained

■ z 2 · ■ - '■■ of 3 χ VS kg / cm with an electrical resistivity of 0.8 χ 10 "" ^ _ A.cm obtained ·

Example 11 w,

100 parts by weight 'was added to 10 parts by weight of a 15 #igen iratronlauge hardwood produced Älkalilignin and the' chemical treatment of mixture at 80 - 9O ⁰ C brought in solution "100 g of this mixture were from a nozzle of 2.0 is extruded at the diameter

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and then · kontinuierlich'auf a spool with a spinning speed of 80 m / min _e with simultaneous drying in the drying cylinder at 200 ⁰ G coiled The fiber thus obtained was pre-treated for 7 hours at 8O ⁰ C in an ozone atmosphere and then placed in a porcelain tube, · After displacing the air is "'no-gas, the fiber contained in the tube in egg _■ Λ nem electric furnace at 900 ° C was heated and this temperature for 1 hour maintained this was added 35 g carbönisierte fiber with a methylene blue adsorption capacity of 10 cnr and a tensile strength of 3 × 10 kg / cm

Example 12

30 parts by weight of thiolignin produced by chemical treatment of softwood were dissolved in 30 parts by weight of 20% sodium hydroxide solution. 20 parts by weight of polyvinyl alcohol were also dissolved in 80 parts by weight of water and the two solutions were ^{mixed at 80 °} C., 100 g of this mixture were extracted from a nozzle with 0, 3 mm in diameter extruded and, after drying at 200 ⁰ G, wound onto a spool.

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■ Ligninfaser was transferred to a porcelain tube, sealed the drilling and placed in an electric furnace * The fiber contained in the closed vessel was heated to 800 ⁰ C and 1 hour at this temperature for this held were 45 earbonisierte fiber with a methylene blue adsorption capacity of

3 ζ p

10 cm and a tensile strength of 3 x 10 - kg / cm received ©

Example 15

100 g of the gem * Example 12 produced lignin 'fasern- 10 hours were heated in air at 20O ⁰ C and then transferred to a porcelain tube. After the air had been displaced by Ii2 * gas, the fiber located in the tube was ^{heated to 80O 0} C in an electric furnace and held at this temperature for one hour * Then the Ng-GaS was displaced by air and the fiber 15 Treated in air for minutes * 34 g of carbonized fiber with a methylene blue adsorption capacity of 25 cur and a tensile strength of 2 × 10 ^

2 - kg / cm received *.

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"" ■■ = · Example 14

JO parts by weight of sodium lignosulfonate were made Dissolved in 15 parts by weight of 15 pounds of potassium hydroxide solution. Furthermore, 30 parts by weight of polyvinyl alcohol in 100 Parts by weight of water dissolved, and the two solutions mixed together x 100 g of this mixture was made up extruded a nozzle with a diameter of 0.2 mm and g

after drying at 200 ^° C., wound onto a spool. The Ligninfaser thus obtained was heated for 10 hours in air at 200 ⁰ C and then transferred to a porcelain tube. This tube was sealed and placed in a elektriHchen oven and heating the fiber in the closed vessel at 90O ⁰ C and 1 hour · maintained at this temperature this case, 38 g of carbonized fiber with a methylene blue adsorption capacity of 12 cnr and a tensile strength of 3 X 10 ⁷ kg / cm obtained.

Example 15

30 parts by weight by chemical treatment of Lignosulfonate made from hardwood was dissolved in 40 parts by weight of 20 # sulfuric acid. Further, 30 parts by weight of polyvinyl alcohol was dissolved in 100 parts by weight glazed dissolved and the two solutions mixed together

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100 g - this mixture was extruded from a nozzle with a diameter of 0.2 mm, ^{dried at 250 0} G and _; then wound onto a spool. The lignin fiber thus obtained was pretreated in air at 200 ° C. for 10 hours and then transferred to a porcelain tube. After the air had been displaced by no-gas, the fiber contained in the tube was heated in an electric furnace to 10OQ- ⁰ C. * In this 52 g of carbonized fiber with a methylene blue adsorption capacity of 8 cnr and a tensile * · ; strength of 3 x 10 kg / cm obtained »

Example 16

100 parts by weight of alkali cellulose were dissolved in 30 parts by weight of carbon disulfide * Furthermore, 200 parts by weight of thiolignin produced by chemical treatment of softwood were dissolved in 400 parts by weight of 15% sodium hydroxide solution and the two solutions were mixed together. 100 g of this mixture was' from a nozzle having a diameter of 0.1 mm in a hydrochloric acid solution extruded ^ the same time the gel * formation was prevented. The Extruded Mixture.,;

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it was allowed to solidify ₅ Mt at a spinning speed of 10 m / min * and dried. The resulting fiber was taken to a Porzellanröhr "sealed the drilling and in an elec- * trisehen oven provided and the fiber in the geschlös" Senen vessel at 32O ⁰ C heated · hash blowing I2-GAES the fiber was in ^ - atmosphere on IQOO ⁰ G |

heated * 42 g of carbonized fiber with a ¹ = tensile strength of 5 χ W kg / cm and an electrical specific resistance of 8 χ 10 "" ^ cm were obtained

Example 17

100 parts by weight of the alkali cellulose were dissolved in 30 parts by weight Schwefeljkohlenstoff · Further, 100 parts by weight dissolved by chemical treatment of hardwood produced alkali lignin in 200 parts by weight of 10 ^ sodium hydroxide solution and solutions both ^ mixed * 100 this mixture g wurderifaus a nozzle of east _t 15 now diameter extruded in air from 400 - 450 ⁰ C, whereby at the same time the gel

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formation was prevented and spun at a spinning speed of 50-100 m / min ». The fiber thus obtained was placed in a porcelain tube, the tube sealed and supplied in an electric furnace the fiber located in the closed vessel was heated to 800 ⁰ C, and then 500 cnr / g air was blown at this temperature <r Subsequently, the fiber left to stand at room temperature. In this procedure, 20 g of carbonized fiber having a methylene blue adsorptivity of 23 cm and a tensile strength was obtained

■ χ ρ.

obtained from 2 χ 10- kg / cm » . ''

Example 18

10 parts by weight of polyacrylonitrile were in 100 Parts by weight of dimethyl sulfoxide also dissolved 60 parts by weight by chemical treatment of hardwood Dissolved thiolignin in 100 parts by weight of dimethyl sulfoxide and the two solutions Mixed together at room temperature. 100 g of this mixture were from a nozzle with a diameter of

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Extruded 0.15mm in l ^ gas of 25o ° C and then with simultaneous drying on a spool with a spinning speed of 200 m / min. Wound · The Ligninfaser thus obtained was heated in the closed vessel to 220 ⁰ C, and then in transferred to a porcelain tube. After displacing the air with ^ gas, the fiber contained in the tube at a rate of 10 ⁰ C was / min. In an electric furnace to 15QO ⁰ C heated · In this case, 32 g of a carbonized fiber having a tensile strength of 5 χ 1 (r / cm and an electrical specific resistance of 5 x 10 ^J cm obtained

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Claims (1)

Patent claims: 1β process for preparing carbonize parsers are characterized gekennzeichpet in that heated a fiber of alkali lignin, thiolignin or lignosulfonates which was obtained by chemical treatment of wood pulp to about 400 ⁰ C to a temperature at which the significant graphitization of the fiber takes place, . 2 «Method according to claim 1, characterized in that that one uses a fiber made by melt spinning alkali lignin obtained by chemical treatment of wood pulp was obtained. 3. The method according to claim 1, characterized in that one uses a fiber which was produced by melt spinning thiolignin at 100 - 40O ⁰ C, which was obtained by chemical treatment of wood pulp « 4. The method according to claim 1, characterized in that there is used a fiber obtained by melt spinning of alkali lignin at 100-400 ⁰ C was prepared, which was obtained by chemical treatment of wood pulp, the an activating agent was added. - 27 - 109837 / 02B3 5. "Process according to claim 1, characterized in that a fiber is used which was produced by melt-spinning thiolignin" at 100 - 40O ⁰ G, which was obtained by chemical treatment of wood pulp with the addition of an activating agent " 6. The method according to claim 1, characterized gekennzeichat · _ν .. that one uses a fiber which was produced by dissolving an 'obtained by chemical treatment of wood pulp alkali lignin, thiolignin or lignin sulfonate in a solvent suitable for dissolution and then dry spinning the solution. 7. The method according to claim 1, characterized in that that a fiber is used which, by dissolving alkali lignin, Thiolignin or lignin sulfonate, which is by formerly ohe Treatment of wood pulp was obtained in one suitable solvent with the addition of a high molecular weight substance, such as polyvinyl alcohol, polyacrylonitrile or Viscose and subsequent dry spinning of the resulting Mixture was made. 8. The method according to claim 1, characterized. draws that one uses a fiber which by dissolving - 28 - 109837/0283 of alkali lignin, thiolignin or lignosulphonate obtained by chemical treatment of wood pulp, in a suitable solvent, adding viscose and then wet spinning the mixture obtained was produced* 9o · A process for production of carbonized fibers, characterized in that, a fiber of alkali lignin, thiolignin or lignin sulphonate which has been obtained by chemical treatment of Ilc / zstoff at 50 - pretreated 400 ⁰ C in an oxidizing atmosphere, and the thus treated fiber at a rate of less than 10 ⁰ C / min "heated in an inert gas to 400 2500 ⁰ C" 10 «A process for the production of carbonized fibers, characterized in that alkali lignin, thiolignin or lignin sulfonate, which was obtained by chemical treatment of wood pulp, is dissolved in a suitable solvent, for this purpose a high molecular weight substance such as polyvinyl alcohol, polyacrylonitrile or viscose is added obtained fiber pretreated at 100 - 400 ⁰ C in a closed vessel and then with a speed * - - 29 - 109837/0283 COPY BATH ORIGINAL ability of less than 5O ⁰ C / min. heated in an inert gas to 400 - 250O ⁰ C, 11 ο Process for the production of activated, carbonized fibers, characterized in that a fiber made of alkali lignin, thiolignin or ligninsulfonate, which was obtained by chemical treatment γοη wood pulp, is ^{pretreated at 50 - 400 0} C in an oxidizing atmosphere and during the heating process fiber -. 100O ⁰ C at a rate of less than 50 ⁰ O / min in a closed GefäJß ~ em activating gas einblästo r 12. A process for the production of activated, carbonized fibers, characterized in that alkali lignin, thiolignin or lignin sulfonate, which was obtained by chemical treatment of wood pulp, is dissolved in a suitable solvent, and a high molecular weight substance such as polyvinyl alcohol, polyacrylonitrile or viscose is added and upon heating of the fiber thus obtained at 600 - 1QOO ⁰ C at a rate of less ala 5O ⁰ Q / min · in a closed vessel an activating COPY 10 9 8 3 7/0283 ORIGINAL INSPECTED