CN101214955B - Hydrophobic honeycomb activated carbon and preparation method thereof - Google Patents
Hydrophobic honeycomb activated carbon and preparation method thereof Download PDFInfo
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Abstract
The present invention discloses a drainage honeycomb activated charcoal and a preparing process thereof. The process carries out procedures of kneading, extrusion molding, drying and the like with activated charcoal as the main material, organic bonding agent, surface modifying agent latex and water as the auxiliary material. The present invention is characterized in that: on the premise of ensuring certain mechanical rigidity and specific surface area, and drainage honeycomb activated charcoal can be obtained. The drainage honeycomb activated charcoal produced by the invention has the advantages of good heat proof and water proof properties and easy reproduction, in particular adapted for the purifying treatment process of organic waste gas with high humidity.
Description
Technical field
The present invention relates to a kind of hydrophobic gac and preparation method thereof.
Background technology
Alveolate activated carbon capable has been integrated advantages such as characteristics such as gac specific surface area height, acid and alkali-resistance, pore texture are controlled, the back of losing efficacy is renewable and honeycomb structure percentage of open area height, big, wear-resistant, the anti-dust pollution ability of geometrical surface are strong, compare with the gac of other type, the great advantage of Alveolate activated carbon capable is that the pressure-losses is little, based on above-mentioned advantage, Alveolate activated carbon capable can be used for gas sweetening, solvent recuperation, also can be used as catalyzer or as support of the catalyst.
When on technical scale, using Alveolate activated carbon capable that organic exhaust gas is done purifying treatment, require gac to have bigger specific surface area, high compression strength and better hydrophobic.In order to reach above-mentioned requirements, in the process of the hydrophobic gac of preparation, often need to add at present to use resol and organic softening agent, perhaps add and use resol, silicon carbide, titanium carbide, but the additive of its use is relatively more expensive, improved the cost of product.
Summary of the invention
One of task of the present invention provides a kind of hydrophobic honeycomb activated carbon that uses in the organic waste-gas purification treating processes that meets.
Two of task of the present invention provides the low hydrophobic honeycomb activated carbon preparation method of a kind of production cost.
The technical solution that adopts for realization task one is:
A kind of hydrophobic honeycomb activated carbon, its overall profile are the cubes of regular geometric shapes, and the honeycomb duct is a square, and hole density is 8～32 holes/cm
2, specific surface area is 660～1040m
2/ g, the malleation physical strength is 2.8～7.4MPa, side pressure strength is 1.1～3.7MPa, spends greater than 120 with the contact angle of water.
Above-mentioned hydrophobic honeycomb activated carbon, its overall profile are column or regular cube.
The technical solution that adopts for realization task two is:
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. the preparation of plasticity-pug: with the powdered active carbon is main raw material, and be auxiliary material with organic binder bond, water and surface modification agent emulsion, the quality proportioning of powdered active carbon, organic binder bond, water and surface modification agent emulsion is 100: 1.5～5: 5～10: 30～50, mix, make plastic mud material;
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, make the vacuum tightness of pug in the barrel reach-0.08～-0.09MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding then obtains the honeycomb base substrate;
C. dry: as, to obtain hydrophobic honeycomb activated carbon with the honeycomb body drying;
Wherein said gac is coal mass active carbon, cocoanut active charcoal or active fruit shell carbon, described organic binder bond is methylcellulose gum, carboxymethyl cellulose or polyvinyl alcohol, and described surface modification agent emulsion is ptfe emulsion, organosilicon-modified acrylic emulsion or polyaminoester emulsion.
Among the above-mentioned steps a, also comprise Activated Carbon Pretreatment, be about to gac and be ground to granularity less than 74 microns, as powdered active carbon.
Among the above-mentioned steps a, main raw material and auxiliary material are stirred in kneader.
Among the above-mentioned steps c, that the honeycomb base substrate is following dry 3～12 hours at 100～200 ℃.
Among the above-mentioned steps c, the honeycomb base substrate after the primary drying processing is carried out the drying treatment second time under 100～200 ℃, dry 3～12 hours again.
Beneficial effect of the present invention:
Hydrophobic honeycomb activated carbon of the present invention has bigger specific surface area, and high compression strength and better hydrophobic have reached the industrial treatment organic exhaust gas to using the requirement of gac; The preparation method of hydrophobic honeycomb activated carbon: with gac, organic binder bond, surface-modifying agent and water, mediate, operation such as extrusion moulding, drying, its notable feature is to have added surface-modifying agent in the moulding pug, under the prerequisite that guarantees certain physical strength and specific surface area, can obtain hydrophobic Alveolate activated carbon capable.The Alveolate activated carbon capable surface hydrophobicity is determined by the kind and the consumption of surface modification emulsion, organic binder bond only rises and supports and ligation, so the surface properties of cellular activated carbon can be regulated and control by the selection of surface-modifying agent, has enlarged the range of application of Alveolate activated carbon capable; And because the introducing of surface-modifying agent, increased the oilness of pug, and needn't add any lubricating auxiliary agent again, preparation procedure is simple, and raw material is cheap, low production cost; The hydrophobic honeycomb activated carbon that present method is produced has heat-resisting, water-tolerant, and easily regeneration is specially adapted to use in the decontamination process of high humidity organic exhaust gas.
Embodiment
With the different proportion relation of each raw material, the present invention is described in detail below:
Embodiment 1
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 960m
2The coal mass active carbon of/g (C-1) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned coal mass active carbon (C-1) powder, methylcellulose gum powder, solid content is 20% ptfe emulsion, water by mass ratio 100: 5: 30: 10 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.08MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make square honeycomb base substrate as required, the length of side of square honeycomb base substrate and height are respectively 65 and 100 centimetres, and honeycomb base substrate hole density is 8 holes/cm
2
C. dry: with the honeycomb base substrate 100 ℃ dry 4 hours down, obtained hydrophobic Alveolate activated carbon capable (SC-1) down in dry 6 hours at 180 ℃.
Performance test: the specific surface area of hydrophobic honeycomb activated carbon is measured by low-temperature nitrogen adsorption method; The ultimate compression strength of Alveolate activated carbon capable is in the UP aircraft measurements; Adopt dynamic adsorption-desorption method mensuration Alveolate activated carbon capable and corresponding raw material gac absorption and desorption rate to normal butane, during test Alveolate activated carbon capable (SC-1) or coal mass active carbon (C-1) are placed in the testing tube with air inlet and air outlet, inlet mouth feeding gas flow is the gas mixture of 400ml/min, 400ppm normal butane and 10% steam during absorption, wherein nitrogen is balanced gas, determines the gas port concentration of n-butane every 5 minutes with the VOC determinator.When concentration of n-butane near entrance concentration 80% the time, stop adsorption test, to switch to volume flow, purity be that 99.95% nitrogen carries out the desorption test to inlet gas then, determined the gas port concentration of n-butane every 5 minutes with the VOC determinator, when the outlet concentration of n-butane is 5ppm, stop the desorption test.To adsorb, concentration of n-butane and time mapping in the desorption process, and integrated curve area is scaled the normal butane amount of unit mass charcoal absorption and desorption.The specific performance index sees Table 1.
Embodiment 2
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 960m
2The coal mass active carbon of/g (C-1) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned coal mass active carbon (C-1) powder, polyvinyl alcohol powder, solid content is 20% ptfe emulsion, water by mass ratio 100: 3: 40: 5 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.08MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make square honeycomb base substrate as required, the length of side of square honeycomb base substrate and height are respectively 100 and 100 centimetres, and honeycomb base substrate hole density is 16 holes/cm
2
C. dry: with the honeycomb base substrate 150 ℃ dry 3 hours down, obtained hydrophobic honeycomb activated carbon (SC-2) down in dry 10 hours at 160 ℃.
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 3
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 960m
2The coal mass active carbon of/g (C-1) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned coal mass active carbon (C-1) powder, carboxymethyl cellulose powder, solid content is 18% organosilicon-modified acrylic emulsion, water by mass ratio 100: 5: 40: 5 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.085MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 18MPa pressure then, make cylindrical honeycomb base substrate as required, the diameter of cylindrical honeycomb base substrate and height are respectively 50 and 100 centimetres, and honeycomb base substrate hole density is 32 holes/cm
2
C. dry: with the honeycomb base substrate 100 ℃ dry 4 hours down, 180 ℃ dry 8 hours down, obtain hydrophobic honeycomb activated carbon (SC-3).
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 4
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 1430m
2The cocoanut active charcoal of/g (C-2) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned cocoanut active charcoal (C-2) powder, polyvinyl alcohol powder, solid content is 19% organosilicon-modified acrylic emulsion, water by mass ratio 100: 4: 50: 5 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.088MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make square honeycomb base substrate as required, the length of side of square base substrate and height are respectively 100 and 100 centimetres, and honeycomb base substrate hole density is 16 holes/cm
2
C. dry: with the honeycomb base substrate 180 ℃ dry 5 hours down, obtained hydrophobic Alveolate activated carbon capable (SC-4) down in dry 12 hours at 200 ℃.
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 5
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 1120m
2The apricot shell gac (C-3) of/g is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned apricot shell gac (C-3) powder, carboxymethyl cellulose powder, solid content is 20% polyaminoester emulsion, water by mass ratio 100: 1.5: 50: 10 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.09MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make square honeycomb base substrate as required, the length of side of square base substrate and height are respectively 100 and 100 centimetres, and honeycomb base substrate hole density is 16 holes/cm
2
C. dry: with the honeycomb base substrate 200 ℃ dry 12 hours down, 100 ℃ dry 3 hours down, obtain hydrophobic Alveolate activated carbon capable (SC-5).
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 6
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 1430m
2The cocoanut active charcoal of/g (C-2) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned cocoanut active charcoal (C-2) powder, methylcellulose gum powder, solid content is 19% ptfe emulsion, water by mass ratio 100: 2: 35: 6 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.08MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make cylindrical honeycomb base substrate as required, the diameter of cylindrical honeycomb base substrate and height are respectively 60 and 80 centimetres, and honeycomb base substrate hole density is 16 holes/cm
2
C. dry: with the honeycomb base substrate 130 ℃ dry 3 hours down, obtained hydrophobic honeycomb activated carbon (SC-6) down in dry 10 hours at 150 ℃.
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 7
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 1430m
2The cocoanut active charcoal of/g (C-2) is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned cocoanut active charcoal (C-2) powder, methylcellulose gum powder, solid content is 19% organosilicon-modified acrylic emulsion, water by mass ratio 100: 3.5: 35: 7 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.088MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make square honeycomb base substrate as required, the length of side of square honeycomb base substrate and height are respectively 80 and 100 centimetres, and honeycomb base substrate hole density is 32 holes/cm
2
C. dry: with the honeycomb base substrate 170 ℃ dry 6 hours down, obtained hydrophobic honeycomb activated carbon (SC-7) down in dry 8 hours at 120 ℃.
Performance test: with embodiment 1.The specific performance index sees Table 1.
Embodiment 8
The preparation method of hydrophobic honeycomb activated carbon, it may further comprise the steps:
A. Activated Carbon Pretreatment: with specific surface area is 1120m
2The apricot shell gac (C-3) of/g is ground to granularity less than 74 microns, and is standby.The preparation of plasticity-pug: with above-mentioned apricot shell gac (C-3) powder, carboxymethyl cellulose powder, solid content is 20% polyaminoester emulsion, water by mass ratio 100: 4.5: 45: 9 stir in kneader, make plastic mud material.
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, the vacuum tightness of pug in the barrel is reached-0.09MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding under 20MPa pressure then, make cylindrical honeycomb base substrate as required, the diameter of cylindrical honeycomb base substrate and height are respectively 70 and 100 centimetres, and honeycomb base substrate hole density is 16 holes/cm
2
C. dry: with the honeycomb base substrate 110 ℃ dry 8 hours down, obtained hydrophobic honeycomb activated carbon (SC-8) down in dry 12 hours at 190 ℃.
Performance test: with embodiment 1.The specific performance index sees Table 1.
The performance index synopsis 1 of hydrophobic honeycomb activated carbon and raw material gac:
As seen to have manufacturing process simple for present method, uses raw materials cost cheap, hydrophobic honeycomb activated carbon compressive resistance of producing and high adsorption capacity, easy regenerated advantage.
Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (7)
1. hydrophobic honeycomb activated carbon, it is characterized in that: the gac overall profile is the cubes of regular geometric shapes, and the honeycomb duct is a square, and hole density is 8～16 holes/cm
2, specific surface area is 660～1040m
2/ g, the malleation physical strength is 2.8～7.4MPa, side pressure strength is 1.1～3.7MPa, spends greater than 120 with the contact angle of water.
2. hydrophobic honeycomb activated carbon according to claim 1 is characterized in that: described hydrophobic honeycomb activated carbon overall profile is column or regular cube.
3. the preparation method of claim 1 or 2 described hydrophobic honeycomb activated carbons, it may further comprise the steps:
A. the preparation of plasticity-pug: with the powdered active carbon is main raw material, and be auxiliary material with organic binder bond, water and surface modification agent emulsion, the quality proportioning of powdered active carbon, organic binder bond, water and surface modification agent emulsion is 100: 1.5～5: 5～10: 30～50, mix, make plastic mud material;
B. vacuum extruding form: plastic mud material is packed in the barrel of vacuum-extruder, start the pumped vacuum systems of vacuum-extruder, make the vacuum tightness of pug in the barrel reach-0.08～-0.09MPa, under this vacuum tightness, kept 10 minutes, extrusion moulding then obtains the honeycomb base substrate;
C. dry: as, to obtain hydrophobic honeycomb activated carbon with the honeycomb body drying;
Wherein said gac is coal mass active carbon, cocoanut active charcoal or active fruit shell carbon, described organic binder bond is methylcellulose gum, carboxymethyl cellulose or polyvinyl alcohol, and described surface modification agent emulsion is ptfe emulsion, organosilicon-modified acrylic emulsion or polyaminoester emulsion.
4. according to the preparation method of the described hydrophobic honeycomb activated carbon of claim 3, it is characterized in that: among the described step a, also comprise Activated Carbon Pretreatment, be about to gac and be ground to granularity less than 74 microns, as powdered active carbon.
5. according to the preparation method of the described hydrophobic honeycomb activated carbon of claim 4, it is characterized in that: among the described step a, main raw material and auxiliary material are stirred in kneader.
6. according to the preparation method of the described hydrophobic honeycomb activated carbon of claim 5, it is characterized in that: among the described step c, that the honeycomb base substrate is following dry 3～12 hours at 100～200 ℃.
7. according to the preparation method of the described hydrophobic honeycomb activated carbon of claim 6, it is characterized in that: among the described step c, the honeycomb base substrate after the drying treatment is carried out the drying treatment second time under 100～200 ℃, dry 3～12 hours again.
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| CN102180464B (en) * | 2009-11-23 | 2012-12-19 | 东北林业大学 | Method for preparing honeycomb-like active carbon through foaming polyurethane |
| CN103170315A (en) * | 2013-02-28 | 2013-06-26 | 北京化工大学常州先进材料研究院 | Hydrophobic cellular metal organic skeleton for waste gas treatment and preparation method thereof |
| CN103252215B (en) * | 2013-05-27 | 2014-09-10 | 山东大学 | Method for preparing hydrophobic activated carbon by utilizing strong acid type cation exchange resin |
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| CN108607573A (en) * | 2018-05-16 | 2018-10-02 | 奥普家居股份有限公司 | Except formaldehyde, the honeycomb catalyst and preparation method thereof of degerming |
| CN108786739A (en) * | 2018-07-04 | 2018-11-13 | 四川大学 | One kind having hydrophobic carbon-supported catalyst preparation method |
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| CN113120904B (en) * | 2019-12-31 | 2022-11-11 | 中国石油化工股份有限公司 | Activated carbon treatment method |
| CN111943201B (en) * | 2020-08-25 | 2021-04-27 | 蜂窝活性炭有限公司 | Preparation process of porous activated carbon |
| CN112569901A (en) * | 2020-12-24 | 2021-03-30 | 福建省鑫森炭业股份有限公司 | Low-impedance activated carbon for automobile carbon tank and preparation method and application thereof |
| CN113663657A (en) * | 2021-08-18 | 2021-11-19 | 海口宜坤环境技术有限公司 | Waste gas purification active carbon adsorption and desorption agent and preparation method thereof |
| CN115254070B (en) * | 2022-06-30 | 2024-06-07 | 广东韩研活性炭科技股份有限公司 | Composite honeycomb adsorption material capable of being desorbed at high temperature and preparation method and application thereof |
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