SU1401277A1 - Method of producing activated coal - Google Patents

Abstract

The invention relates to the methods of no-ray activated 1m and n () Zvo, 1N1 t novysit adOs | 1 mi1onn K) capacity yr.isi .a due to an increase in y.ie.ibHoii surface and reduce its electrical resistance. yu . Activated by 1 yro. ib and (), c. ie.u IOHUIM on |) a: i) m. / IpeLiccHbii i gol-syryi obrabot1, piiot vo.- spirit irn 280-1 20 (with speed () bga) a 7 35 Vo per hour before obgar 15 - 35% and actnvirh- from water 1I |. 800 9 (1P-C to ob-; ara 15 -43 vii. I tab, 1.

Description

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ABOUT

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i The invention relates to a process for the preparation of activated carbon and can be used, for example, for the carbon adsorption iHoH purification of the liquid phase. A: The purpose of the invention is to increase the adsorption capacity of coal due to an increase in specific gravity and a decrease in its electrical resistance.

Example I. 1 kg of charcoal charcoal (basic fraction 2–5 mm) is loaded into an electrically rotating blast and air supplied at a rate of 20 liters / min at 350 ° C for 1 hour to about 35%. The burning speed is 35 May. / O in 1 h. The coal is cooled to 40 ° C, pumped out of the nech and put on activation in the same way. The activation temperature in Nechi is 850 ° С. The charcoal is activated for 0.5 hours before burning 43 wt.%. Consumption of water bed 3.0 kg per 1 kg of coal. After activation, the coal is cooled to 25 ° C. Output coal 35%. I The resulting carbon-containing material I has the following characteristics. Fractional composition, ° / o: I 5.0-3.6mm1

3.6-1.0 mm96

less than 1.0 mm3

Specific e; 1 spectrodegradation in a noroshkoobraznom form at a load of 20 kgf / cm 2, Ohm-mm

Micronor volume, Mesogur volume, Characteristic adsorption energy in micronor, kJ / mol Specific surface of the skeleton micron, m2 / g Specific surface area of the mesopore,

1.5

0.40

0.38

21.4 715 190

Total specific surface area of carbon-containing material, m / g905

Methylene blue adsorption capacity in powder form, mg / g338

Example 2. 1 kg of charcoal charcoal (the main fraction of 2-5 mm) is loaded into a rotating cold with electric heating and is oxidized by air, which is supplied at a speed of

five

0

five

0

with a growth rate of 5 l / min at 280 ° C for 2.0 hours to burn about 15 ° / o. Coal is cooled to 40 ° C, discharged from the nechi and fed to the activation in the same nech. The activation temperature in Nechi is 800 ° C. Coal is activated with water vapor for 0.5 h before burning 15%. Consumption of water vapor 3 kg / kg coal. After activation, the coal is cooled to 25 ° C. Output coal 72%. The resulting carbon-containing material has the following characteristics. Fractional composition,%:

5 -3.6mm2.0

3.6-1.0mm98

more than 1 mm is missing

Specific electrical energy in powder form at a load of 20 kgf / cm 2, Ohm-mm 0.7

Micron volume,, 25

Characteristic adsorption energy in micronor, kJ / mol28.8 Volume mesonor,, 08 Specific surface area of micropores, m 2 / g 600 Specific surface area of mesopore skeleton, m / g 40 Total surface area, m 2 / g 640 Adsorption capacity but%,% 78 Examples 3 - //. Similar to example 1 except for the process parameters, which are reflected in the table.

The table gives the rationale for the boundaries of the conditions of the proposed method.

Claims (1)

Invention Formula five A method of producing activated carbon, which includes treating a carbon-containing material with air at 280-420 ° C to a burn-up of 15-35 ° / o and activation with a water base at 800-900 ° C, differing in m to increase the adsorption coal capacity by increasing the specific surface and reducing its electrical resistance, as a carbon-containing material the charcoal is used, the treatment is carried out at a burning speed of 7-35% at 1 hour and activation is carried out at 15-43 / o. Table continuation