CN106422528B - Expanded graphite filtering material and preparation method thereof - Google Patents
Expanded graphite filtering material and preparation method thereof Download PDFInfo
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- CN106422528B CN106422528B CN201610832847.5A CN201610832847A CN106422528B CN 106422528 B CN106422528 B CN 106422528B CN 201610832847 A CN201610832847 A CN 201610832847A CN 106422528 B CN106422528 B CN 106422528B
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- expanded graphite
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 67
- 239000010439 graphite Substances 0.000 title claims abstract description 67
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 51
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 8
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 26
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 17
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 16
- 229940075529 glyceryl stearate Drugs 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 4
- 229910052700 potassium Inorganic materials 0.000 abstract description 4
- 239000011591 potassium Substances 0.000 abstract description 4
- 239000004519 grease Substances 0.000 abstract description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000008236 heating water Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2082—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Geology (AREA)
- Analytical Chemistry (AREA)
- Ceramic Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of preparation methods of expanded graphite filtering material, wherein the preparation method includes: the heating water bath at 40-50 DEG C after mixing graphite flakes, hydrogen peroxide and weight complex acid potassium, obtains expanded graphite M after filtration drying；After expanded graphite M, alumina silicate fibre, tristerin and ethylene glycol are mixed, expanded graphite filtering material is obtained through dry-pressing formed；Filtering material obtained has excellent adsorptivity, and porosity is higher, and absorption grease ability is strong.
Description
Technical Field
The invention relates to a filter material, in particular to an expanded graphite filter material and a preparation method thereof.
Background
The expanded graphite has excellent cold and heat resistance, corrosion resistance, self-lubrication and other excellent performances of natural graphite, and has the characteristics of softness, compression resilience, adsorbability, ecological environment harmony, biocompatibility, radiation resistance and the like which are not possessed by natural graphite. If the expanded graphite can be made into a filtering material for treating sewage, the expanded graphite has unique advantages because the expanded graphite has a developed reticular pore structure and the surface of the expanded graphite is hydrophobic and oleophilic.
Disclosure of Invention
The invention aims to provide an expanded graphite filter material and a preparation method thereof, and the prepared filter material has excellent adsorbability, higher porosity and strong grease adsorption capacity.
In order to achieve the above object, the present invention provides a method for preparing an expanded graphite filter material, wherein the method comprises:
(1) mixing graphite flakes, hydrogen peroxide and potassium dichromate, heating in water bath at 40-50 ℃, filtering and drying to obtain expanded graphite M;
(2) mixing expanded graphite M, aluminum silicate fiber, glyceryl stearate and ethylene glycol, and performing dry pressing to obtain an expanded graphite filter material; wherein
The graphite flake comprises, by weight, 100 parts of graphite flakes, 50-70 parts of hydrogen peroxide, 30-60 parts of potassium dichromate, 2-9 parts of aluminum silicate fibers, 20-40 parts of glyceryl stearate and 30-60 parts of ethylene glycol.
The invention also provides an expanded graphite filter material, wherein the expanded graphite filter material is prepared by the preparation method.
Through the technical scheme, the invention provides a preparation method of an expanded graphite filter material, wherein the preparation method comprises the following steps: mixing graphite flakes, hydrogen peroxide and potassium dichromate, heating in water bath at 40-50 ℃, filtering and drying to obtain expanded graphite M; mixing expanded graphite M, aluminum silicate fiber, glyceryl stearate and ethylene glycol, and performing dry pressing to obtain an expanded graphite filter material; through the synergistic effect among the raw materials, the prepared filter material has excellent adsorbability, high porosity and strong oil and fat adsorption capacity.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a preparation method of an expanded graphite filter material, wherein the preparation method comprises the following steps: mixing graphite flakes, hydrogen peroxide and potassium dichromate, heating in water bath at 40-50 ℃, filtering and drying to obtain expanded graphite M; mixing expanded graphite M, aluminum silicate fiber, glyceryl stearate and ethylene glycol, and performing dry pressing to obtain an expanded graphite filter material; the graphite flake comprises, by weight, 100 parts of graphite flakes, 50-70 parts of hydrogen peroxide, 30-60 parts of potassium dichromate, 2-9 parts of aluminum silicate fibers, 20-40 parts of glyceryl stearate and 30-60 parts of ethylene glycol.
In a preferred embodiment of the present invention, in order to obtain a filtration membrane having superior adsorption capacity and oil removal capacity, the hydrogen peroxide is used in an amount of 55 to 65 parts by weight, the potassium dichromate is used in an amount of 40 to 50 parts by weight, the aluminum silicate fiber is used in an amount of 4 to 7 parts by weight, the glyceryl stearate is used in an amount of 25 to 35 parts by weight, and the ethylene glycol is used in an amount of 40 to 50 parts by weight, based on 100 parts by weight of the graphite flakes.
In order to obtain expanded graphite with higher expansion volume, in a preferred embodiment of the present invention, the water bath heating time in step (1) is 10-20 min.
In order to enable the filter material to be formed better so that the filter material has higher toughness, in a preferred embodiment of the present invention, the pressure for dry forming in step (2) is 3 to 6 MPa.
In a preferred embodiment of the invention, the aluminium silicate fibres may be of the type conventionally used in the art, for example, not more than 5mm in length in order to further provide the adsorptive effect of the filter material.
The present invention will be described in detail below by way of examples.
Example 1
Mixing 100g of graphite flake, 55g of hydrogen peroxide and 40g of potassium heavy complex acid, heating in water bath at 40 ℃ (heating time is 10min), filtering and drying to obtain expanded graphite M; after mixing the expanded graphite M, 4g of aluminum silicate fiber, 25g of glyceryl stearate and 40g of ethylene glycol, dry-pressing (the pressure of the dry-pressing is 3MPa) to obtain the expanded graphite filter material A1.
Example 2
Mixing 100g of graphite flake, 65g of hydrogen peroxide and 50g of potassium heavy complex acid, heating in water bath at 50 ℃ (heating time is 20min), filtering and drying to obtain expanded graphite M; after mixing the expanded graphite M, 7g of aluminum silicate fibers, 35g of glyceryl stearate and 50g of ethylene glycol, dry-pressing the mixture (the pressure of the dry-pressing is 6MPa) to obtain an expanded graphite filter material A2.
Example 3
Mixing 100g of graphite flakes, 60g of hydrogen peroxide and 45g of potassium heavy complex acid, heating in water bath at 45 ℃ (the heating time is 15min), filtering and drying to obtain expanded graphite M; after mixing the expanded graphite M, 5g of aluminum silicate fibers, 30g of glyceryl stearate and 45g of ethylene glycol, dry-pressing the mixture (the pressure of the dry-pressing is 5MPa) to obtain an expanded graphite filter material A3.
Example 4
Preparation was carried out in the same manner as in example 1 except that the hydrogen peroxide was used in an amount of 50g, the potassium dichromate was used in an amount of 30g, the aluminum silicate fiber was used in an amount of 2g, the glyceryl stearate was used in an amount of 20g, and the ethylene glycol was used in an amount of 30g, relative to 100g of the graphite flake, to obtain an expanded graphite filter material A4.
Example 5
Preparation was carried out in the same manner as in example 1 except that the hydrogen peroxide was used in an amount of 70g, the potassium dichromate was used in an amount of 60g, the aluminum silicate fiber was used in an amount of 9g, the glyceryl stearate was used in an amount of 40g, and the ethylene glycol was used in an amount of 60g, relative to 100g of the graphite flake, to obtain an expanded graphite filter material A5.
Comparative example 1
Preparation was carried out in the same manner as in example 1 except that the amount of hydrogen peroxide was 40g, the amount of potassium dichromate was 20g, the amount of aluminum silicate fiber was 1g, the amount of glyceryl stearate was 15g, and the amount of ethylene glycol was 25g, relative to 100g of graphite flake, to obtain an expanded graphite filter material D1.
Comparative example 2
Preparation was carried out in the same manner as in example 1 except that the hydrogen peroxide was used in an amount of 75g, the potassium dichromate was used in an amount of 65g, the aluminum silicate fiber was used in an amount of 12g, the glyceryl stearate was used in an amount of 45g, and the ethylene glycol was used in an amount of 65g, relative to 100g of the graphite flake, to obtain an expanded graphite filter material D2.
Test example 1
The prepared expanded graphite filter material is used for filtering oily sewage, and the oil removal rate is measured.
TABLE 1
| Example numbering | Porosity (%) | Oil removal Rate (%) |
| A1 | 95 | 92 |
| A2 | 93 | 91 |
| A3 | 95 | 92 |
| A4 | 82 | 84 |
| A5 | 81 | 86 |
| D1 | 56 | 62 |
| D2 | 62 | 65 |
As can be seen from the data in the above table, the porosity and oil removal effect of the filter materials A1-A5 prepared within the scope of the present invention are better than those of the filter materials D1 and D2 prepared outside the scope of the present invention, and the performance of the filter materials prepared within the preferred scope of the present invention is better.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. A preparation method of an expanded graphite filter material is characterized by comprising the following steps:
(1) mixing graphite flakes, hydrogen peroxide and potassium dichromate, heating in water bath at 40-50 ℃, filtering and drying to obtain expanded graphite M;
(2) mixing expanded graphite M, aluminum silicate fiber, glyceryl stearate and ethylene glycol, and performing dry pressing to obtain an expanded graphite filter material; wherein,
the graphite flake comprises, by weight, 100 parts of graphite flakes, 50-70 parts of hydrogen peroxide, 30-60 parts of potassium dichromate, 2-9 parts of aluminum silicate fibers, 20-40 parts of glyceryl stearate and 30-60 parts of ethylene glycol.
2. The preparation method of claim 1, wherein the hydrogen peroxide is used in an amount of 55 to 65 parts by weight, the potassium dichromate is used in an amount of 40 to 50 parts by weight, the aluminum silicate fiber is used in an amount of 4 to 7 parts by weight, the glyceryl stearate is used in an amount of 25 to 35 parts by weight, and the ethylene glycol is used in an amount of 40 to 50 parts by weight, relative to 100 parts by weight of the graphite flake.
3. The production method according to claim 1 or 2, wherein the heating in the water bath in the step (1) is performed for 10 to 20 min.
4. The production method according to claim 1 or 2, wherein the pressure for dry press molding in the step (2) is 3 to 6 MPa.
5. A production method as claimed in claim 1, wherein the aluminosilicate fibers have a length of not more than 5 mm.
6. An expanded graphite filter material produced by the production method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832847.5A CN106422528B (en) | 2016-09-20 | 2016-09-20 | Expanded graphite filtering material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832847.5A CN106422528B (en) | 2016-09-20 | 2016-09-20 | Expanded graphite filtering material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106422528A CN106422528A (en) | 2017-02-22 |
| CN106422528B true CN106422528B (en) | 2019-06-04 |
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| CN109248662A (en) * | 2018-09-17 | 2019-01-22 | 明光市飞洲新材料有限公司 | A kind of adsorbent and preparation method thereof for building |
| CN110339826A (en) * | 2019-07-11 | 2019-10-18 | 刘建恒 | A kind of mesoporous filtrate of lightweight and preparation method thereof |
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| US7550118B2 (en) * | 2004-04-14 | 2009-06-23 | 3M Innovative Properties Company | Multilayer mats for use in pollution control devices |
| CN104446331B (en) * | 2014-11-19 | 2016-03-09 | 燕山大学 | The preparation method of aluminum phosphate-expanded graphite-alumina-silicate ceramic fibre heat-insulating and fire-proof matrix material |
| CN105016332A (en) * | 2015-08-11 | 2015-11-04 | 无锡桥阳机械制造有限公司 | Preparation technology of expandable graphite |
| CN105797691B (en) * | 2016-03-30 | 2019-03-08 | 河南工业大学 | A kind of porous prilled floatability absorbent charcoal composite material and preparation method thereof |
| CN105771896A (en) * | 2016-04-21 | 2016-07-20 | 苏州云舒新材料科技有限公司 | Modified activated carbon compound adsorption treatment material for wastewater treatment |
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Granted publication date: 20190604 |