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CN114853009B - Process method for preparing activated carbon by compounding carbon black - Google Patents

Process method for preparing activated carbon by compounding carbon black Download PDF

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Publication number
CN114853009B
CN114853009B CN202210538038.9A CN202210538038A CN114853009B CN 114853009 B CN114853009 B CN 114853009B CN 202210538038 A CN202210538038 A CN 202210538038A CN 114853009 B CN114853009 B CN 114853009B
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carbon black
mass
activated carbon
powder
red soil
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CN114853009A (en
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王利杰
邵路
王宏
陈忠斌
邵光谱
吕宏涛
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Qingdao Black Cat New Material Research Institute Co ltd
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Qingdao Black Cat New Material Research Institute Co ltd
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    • 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
    • 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
    • C01B32/342—Preparation characterised by non-gaseous activating agents
    • C01B32/348—Metallic compounds
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention provides a process for preparing active carbon by compounding carbon black, which comprises mixing nano carbon black with attapulgite clay powder, adding bactericide and P, P-oxo-bis-benzene sulfonyl hydrazine, spraying disodium dihydrogen pyrophosphate aqueous solution on the surface for activation, and finally preparing carbon black composite active carbon particles by two-stage drying process.

Description

Process method for preparing activated carbon by compounding carbon black
Technical Field
The invention relates to the technical field of modification of nano carbon black, in particular to a process method for preparing active carbon by compounding carbon black.
Background
Activated carbon is a specially treated carbon in which organic raw materials (shells, coal, wood, etc.) are heated in an air-tight condition to reduce non-carbon components (this process is called carbonization), and then reacted with gas, the surface is eroded, and a structure with developed micropores is produced (this process is called activation). The activated carbon surface has countless tiny pores, and the specific surface area reaches 500-1500m 2 And/g. Because of the characteristic of the activated carbon, the activated carbon has extremely strong adsorption capacity and is widely applied to the fields of medical treatment, epidemic prevention and the like.
Because the activated carbon only has an adsorption function, but not a sterilization function, the activated carbon used in the medical and epidemic prevention fields is generally a disposable consumable product, and has poor reusability.
The invention develops a process method for preparing the activated carbon by compounding carbon black, which has larger specific surface area, sterilization function, repeated use in the medical and epidemic prevention fields and obvious effects of saving resources and improving protective capability.
Disclosure of Invention
The invention provides a process for preparing active carbon by compounding carbon black, which comprises mixing nano carbon black with attapulgite clay powder, adding bactericide and P, P-oxo-bis-benzene sulfonyl hydrazine, spraying disodium dihydrogen pyrophosphate aqueous solution on the surface for activation, and finally preparing carbon black composite active carbon particles by two-stage drying process.
A process method for preparing active carbon by compounding carbon black comprises the following steps:
(1) Dispersing mixed powder of attapulgite clay powder, namely acid red soil with the mass ratio of 8-10:1, in 30% ethanol with the mass ratio of 3-5 times, adding bactericide with the mass ratio of 1% -2% and P, P-oxo-bis-benzenesulfonyl hydrazine with the mass ratio of 3% -5% into the mixed powder, uniformly mixing, adding nano carbon black with the mass ratio of 6-8 times of the mixed powder, and grinding by a three-roller machine to prepare daub;
(2) Granulating the cement by a granulator, and then spraying 5% -8% disodium dihydrogen pyrophosphate aqueous solution on the surface of the prepared granules, wherein the sprayed liquid-solid ratio is 2.5-3.0mL/kg;
(3) And (3) putting the particles into a baking oven, baking at 80-100 ℃ until the solvent residue is 30-40%, then quickly heating to 150-160 ℃, and heating until the particle mass is constant, thus obtaining the carbon black composite activated carbon particles.
Further, the particle size of the nano carbon black is 10nm-20nm.
Further, the bactericide is silver-based bactericide or copper-based bactericide.
Further, the acidic red soil is formed by modification, and the modification process is as follows:
(1) Dispersing polylactic acid powder in absolute ethyl alcohol with the mass multiple of 12-15 times, simultaneously adding tetraethyl silicate with the mass of 10-15% of the polylactic acid powder, adding acid red soil with the mass multiple of 40-50 times of the polylactic acid powder after dissolution is completed, and uniformly stirring;
(2) And (3) introducing hot air into the mixed solution until the ethanol is completely volatilized, and then grinding the solid to obtain the modified acidic red soil.
Further, the particle size of the polylactic acid powder is 10 μm to 20 μm.
After the carbon black composite activated carbon particles are used for a long time, the carbon black composite activated carbon particles can be reused after being heated and re-activated at 100 ℃.
The invention has the technical effects and advantages that:
1. according to the invention, the nano carbon black is mixed with the attapulgite clay powder, the bactericide and the P, P-oxo-bis-benzenesulfonyl hydrazine are added at the same time, the surface is sprayed with disodium dihydrogen pyrophosphate aqueous solution for activation, and finally, the carbon black composite activated carbon particles are prepared by a two-stage drying process, and have the advantages of large specific surface area, good adsorption performance, good sterilization function, repeated use and good promotion effects on saving resources and improving protective capability;
2. the two-stage process is carried out, most of the solvent is firstly distilled out, the attapulgite clay powder and the nano carbon black form larger frameworks and holes, then the temperature is raised and solidified, and at the moment, the P, P-oxo-bis-benzenesulfonyl hydrazide foams to form fine internal holes, so that the carbon black composite activated carbon particles are internally provided with holes in multiple steps, and the specific surface area is effectively improved;
3. the disodium dihydrogen pyrophosphate aqueous solution is sprayed, so that the bactericide can be effectively activated, and the sterilization performance of the carbon black composite activated carbon particles can be improved;
4. the acid red soil is added into the attapulgite clay powder, so that the sterilization performance of the carbon black composite activated carbon particles can be effectively improved, and the duration time of sterilization is prolonged;
5. the modified acid red soil can further improve the sterilization performance and the lasting time of the carbon black composite activated carbon particles.
Detailed Description
Example 1
A process method for preparing active carbon by compounding carbon black comprises the following steps:
(1) Dispersing mixed powder of attapulgite clay powder, namely acid red soil with the mass ratio of 8:1, in 30% ethanol with the mass multiple of 3 times, then adding YZN-Y120-1 silver ion antibacterial agent with the mass of 2% of the mixed powder and 5% of P, P-oxo-bis-benzenesulfonyl hydrazide, uniformly mixing, adding nano carbon black with the mass of 6 times of the mixed powder and the particle size of 20nm, and grinding by a three-roller machine to prepare daub;
(2) Granulating the cement by a granulator, and then spraying 5% disodium dihydrogen pyrophosphate aqueous solution on the surface of the prepared granules, wherein the sprayed liquid-solid ratio is 3.0mL/kg;
(3) And (3) putting the particles into an oven, drying at 80 ℃ until the solvent remains 40%, then quickly heating to 150 ℃, and heating until the particle mass is constant, thus obtaining the carbon black composite activated carbon particles.
The acidic red soil is modified by the following modification process:
(1) Dispersing polylactic acid powder with the particle size of 10 mu m in absolute ethyl alcohol with the mass multiple of 15 times, simultaneously adding tetraethyl silicate with the mass of 15% of the polylactic acid powder, adding acid red soil with the mass multiple of 50 times of the polylactic acid powder after dissolution is completed, and uniformly stirring;
(2) And (3) introducing hot air into the mixed solution until the ethanol is completely volatilized, and then grinding the solid to obtain the modified acidic red soil.
Example 2
A process method for preparing active carbon by compounding carbon black comprises the following steps:
(1) Dispersing mixed powder of attapulgite clay powder, namely acid red soil with the mass ratio of 9:1, in 30% ethanol with the mass multiple of 4 times, then adding YZN-Y120-1 silver ion antibacterial agent with the mass of 1.6% and 4% P, P-oxo-bis-benzenesulfonyl hydrazide, uniformly mixing, adding nano carbon black with the mass of 7.2 times and the particle size of 20nm, and grinding by a three-roller mill to prepare the cement;
(2) Granulating the cement by a granulator, and then spraying a 6% disodium dihydrogen pyrophosphate aqueous solution on the surface of the prepared granules, wherein the sprayed liquid-solid ratio is 2.8mL/kg;
(3) And (3) putting the particles into an oven, drying at 85 ℃ until the solvent remains 40%, then quickly heating to 160 ℃, and heating until the particle mass is constant, thus obtaining the carbon black composite activated carbon particles.
The acidic red soil is modified by the following modification process:
(1) Dispersing polylactic acid powder with the particle size of 15 mu m in absolute ethyl alcohol with the mass multiple of 14 times, simultaneously adding tetraethyl silicate with the mass of 12% of the polylactic acid powder, adding acid red soil with the mass multiple of 48 times of the polylactic acid powder after dissolution is completed, and uniformly stirring;
(2) And (3) introducing hot air into the mixed solution until the ethanol is completely volatilized, and then grinding the solid to obtain the modified acidic red soil.
Example 3
A process method for preparing active carbon by compounding carbon black comprises the following steps:
(1) Dispersing mixed powder of attapulgite clay powder, namely acid red soil with the mass ratio of 10:1, in 30% ethanol with the mass multiple of 5 times, then adding YZN-Y120-1 silver ion antibacterial agent with the mass of 1% of the mixed powder and 3% of P, P-oxo-bis-benzenesulfonyl hydrazide, uniformly mixing, adding nano carbon black with the mass of 8 times of the mixed powder and the particle size of 20nm, and grinding by a three-roller machine to prepare daub;
(2) Granulating the cement by a granulator, and then spraying 8% disodium dihydrogen pyrophosphate aqueous solution on the surface of the prepared granules, wherein the spraying liquid-solid ratio is 2.5mL/kg;
(3) And (3) putting the particles into an oven, drying at 100 ℃ until the solvent remains 30%, then quickly heating to 160 ℃, and heating until the particle mass is constant, thus obtaining the carbon black composite activated carbon particles.
The acidic red soil is modified by the following modification process:
(1) Dispersing polylactic acid powder with the particle size of 20 mu m in absolute ethyl alcohol with the mass multiple of 12 times, simultaneously adding tetraethyl silicate with the mass of 10% of the polylactic acid powder, adding acid red soil with the mass multiple of 40 times of the polylactic acid powder after dissolution is completed, and uniformly stirring;
(2) And (3) introducing hot air into the mixed solution until the ethanol is completely volatilized, and then grinding the solid to obtain the modified acidic red soil.
Example 4
A process method for preparing active carbon by compounding carbon black is provided, wherein acid red soil is not modified, and the rest of the process is the same as in example 2.
Comparative example 1
A process method for preparing active carbon by compounding carbon black, wherein in the process method, acid red soil is not added in the step (1), and the rest of the process is the same as in the example 2.
Comparative example 2
A process method for preparing active carbon by compounding carbon black, wherein in the process method, P-oxo-bis-benzenesulfonyl hydrazide is not added in the step (1), and the rest processes are the same as in the example 2.
Comparative example 3
A process method for preparing active carbon by compounding carbon black, wherein in the process method, disodium dihydrogen pyrophosphate aqueous solution is not sprayed on the surface of the step (2), and the rest of the process is the same as in the example 2.
Comparative example 4
A process method for preparing active carbon by compounding carbon black comprises the step (2) of spraying zinc chloride aqueous solution with the same concentration and dosage on the surface, and the rest of the process is the same as that of the example 2.
Comparative example 5
A process method for preparing activated carbon by compounding carbon black, wherein in the process method, the step (3) is directly heated to 160 ℃ and dried to prepare carbon black compound activated carbon particles, and the rest of the process is the same as that of the example 2.
Effect contrast:
the carbon black composite activated carbon particles prepared in the examples and the comparative examples are measured for specific surface area according to GB/T7702.21-1997 determination of specific surface area of coal particle activated carbon test method; simultaneously, wood activated carbon with the specific surface area close to that of the carbon black composite activated carbon particles prepared in the embodiment 2 is selected, and YZN-Y120-1 silver ion antibacterial agent with the same amount as that of the embodiment 2 is adsorbed as a comparison, and then the test is carried out:
according to the test method of GB/T31402-2015 test method for antibacterial property of Plastic surface, staphylococcus aureus is used as a test object, and after 24 hours of inoculation and culture, the antibacterial activity value of the carbon black composite activated carbon particles is tested;
antibacterial Activity value (R) =log (B/C)
B-average viable count after 24 hours of cultivation without antibacterial measures in comparative example 1;
c, culturing the sample with the antibacterial measures for 24 hours, and then averaging the number of viable bacteria;
the experiment was continued until the antimicrobial activity value decreased to half the initial antimicrobial activity value, and the number of days was recorded, which was designated as half-life (D).
2. The carbon black composite activated carbon particles having undergone half-life were re-activated by heating at 100 ℃, and the antibacterial activity value (R) was re-tested after activation.
The above examples and comparative examples are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail by the above examples and comparative examples, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention as defined by the appended claims.

Claims (7)

1. A process method for preparing active carbon by compounding carbon black is characterized in that: the process method comprises the following steps:
(1) Dispersing mixed powder of attapulgite clay powder, namely acid red soil with the mass ratio of 8-10:1, in 30% ethanol with the mass ratio of 3-5 times, adding bactericide with the mass ratio of 1% -2% and P, P-oxo-bis-benzenesulfonyl hydrazine with the mass ratio of 3% -5% into the mixed powder, uniformly mixing, adding nano carbon black with the mass ratio of 6-8 times of the mixed powder, and grinding by a three-roller machine to prepare daub;
(2) Granulating the cement by a granulator, and then spraying 5% -8% disodium dihydrogen pyrophosphate aqueous solution on the surface of the prepared granules, wherein the sprayed liquid-solid ratio is 2.5-3.0mL/kg;
(3) And (3) putting the particles into a baking oven, baking at 80-100 ℃ until the solvent residue is 30-40%, then quickly heating to 150-160 ℃, and heating until the particle mass is constant, thus obtaining the carbon black composite activated carbon particles.
2. The process according to claim 1, characterized in that: the particle size of the nano carbon black is 10nm-20nm.
3. The process according to claim 1, characterized in that: the bactericide is silver-based bactericide or copper-based bactericide.
4. The process according to claim 1, characterized in that: the acidic red soil is modified by the following modification process:
(1) Dispersing polylactic acid powder in absolute ethyl alcohol with the mass multiple of 12-15 times, simultaneously adding tetraethyl silicate with the mass of 10-15% of the polylactic acid powder, adding acid red soil with the mass multiple of 40-50 times of the polylactic acid powder after dissolution is completed, and uniformly stirring;
(2) And (3) introducing hot air into the mixed solution until the ethanol is completely volatilized, and then grinding the solid to obtain the modified acidic red soil.
5. The process according to claim 4, wherein: the particle size of the polylactic acid powder is 10-20 mu m.
6. Carbon black composite activated carbon particles produced by the process according to any one of claims 1 to 5.
7. The carbon black composite activated carbon particles of claim 6, wherein: after the carbon black composite activated carbon particles are used for a long time, the carbon black composite activated carbon particles can be reused after being heated and re-activated at 100 ℃.
CN202210538038.9A 2022-05-18 2022-05-18 Process method for preparing activated carbon by compounding carbon black Active CN114853009B (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112608623A (en) * 2020-12-11 2021-04-06 青岛黑猫新材料研究院有限公司 Nano composite carbon black with ultrahigh sound insulation performance and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112608623A (en) * 2020-12-11 2021-04-06 青岛黑猫新材料研究院有限公司 Nano composite carbon black with ultrahigh sound insulation performance and preparation method thereof

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