CN118235882A - Acid-base combined filter tip and preparation method thereof - Google Patents
Acid-base combined filter tip and preparation method thereof Download PDFInfo
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- CN118235882A CN118235882A CN202410560513.1A CN202410560513A CN118235882A CN 118235882 A CN118235882 A CN 118235882A CN 202410560513 A CN202410560513 A CN 202410560513A CN 118235882 A CN118235882 A CN 118235882A
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- Prior art keywords
- acid
- base
- alkaline
- base material
- acidic
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 72
- 239000000126 substance Substances 0.000 claims abstract description 35
- 230000002378 acidificating effect Effects 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000002904 solvent Substances 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 12
- 150000007524 organic acids Chemical class 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 4
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 4
- 239000001263 FEMA 3042 Substances 0.000 claims description 4
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 4
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 239000001630 malic acid Substances 0.000 claims description 4
- 235000011090 malic acid Nutrition 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 4
- 235000015523 tannic acid Nutrition 0.000 claims description 4
- 229940033123 tannic acid Drugs 0.000 claims description 4
- 229920002258 tannic acid Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 229920006221 acetate fiber Polymers 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 239000011736 potassium bicarbonate Substances 0.000 claims description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 3
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 235000005985 organic acids Nutrition 0.000 claims 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 22
- 239000000779 smoke Substances 0.000 abstract description 13
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 abstract description 12
- 229960002715 nicotine Drugs 0.000 abstract description 12
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 abstract description 12
- 229910021529 ammonia Inorganic materials 0.000 abstract description 11
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 abstract description 6
- 230000036541 health Effects 0.000 abstract description 4
- 239000001530 fumaric acid Substances 0.000 abstract description 3
- 150000004767 nitrides Chemical class 0.000 abstract description 3
- XKLJHFLUAHKGGU-UHFFFAOYSA-N nitrous amide Chemical compound ON=N XKLJHFLUAHKGGU-UHFFFAOYSA-N 0.000 abstract description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000000391 smoking effect Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 241000208125 Nicotiana Species 0.000 description 5
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- LRBQNJMCXXYXIU-QWKBTXIPSA-N gallotannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@H]2[C@@H]([C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-QWKBTXIPSA-N 0.000 description 3
- 238000004255 ion exchange chromatography Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 235000013373 food additive Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000019505 tobacco product Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention provides an acid-base combined filter tip and a preparation method thereof. The acid-base combined filter comprises a filter shell and an acidic base material and an alkaline base material fixed in the filter shell. According to the invention, through the neutralization reaction of alkaline and acidic substances attached to the substrate material and corresponding acidic and alkaline harmful substances in the flue gas, the inhalation of harmful substances such as hydrogen cyanide, fumaric acid, phenolic substances, ammonia, nitrides, nicotine, nitrosamine and the like is effectively reduced. In addition, the invention adopts the base material and the acid-base treatment liquid which are environment-friendly and high in cost effectiveness, ensures the air permeability and the adsorptivity of the filter tip, and provides a smoking experience with health promotion. In addition, the filter tip of the invention can obviously reduce the content of total particulate matters, tar and nicotine in the smoke, and can greatly improve the adsorptivity of harmful components such as ammonia and the like.
Description
Technical Field
The invention relates to the technical field of cigarette filters, in particular to an acid-base combined filter tip and a preparation method thereof.
Background
Tobacco products are widely popular in modern society, however, a great deal of harmful substances are generated in the combustion process of tobacco, and serious threat is caused to human health. These harmful substances mainly include tar, nicotine, nitrogen oxides, ammonia, hydrogen cyanide, phenolic compounds, benzopyrene, etc. Tobacco tar is one of these harmful substances, which is a product of incomplete combustion of organic substances under anoxic conditions, contains various carcinogens and carcinomatous substances, and although the content is small, long-term accumulation may have serious effects on health.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides an acid-base combined filter tip and a preparation method thereof, which improve the filtering efficiency and solve the problems in the background art by reducing harmful substances generated by burning inhaled tobacco.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
according to a first aspect of the present invention there is provided an acid-base combination filter comprising a filter housing and an acidic base material and a basic base material secured within the filter housing.
Preferably, the volume density of the acidic base material and the alkaline base material is 20-150 kg/m 3.
Preferably, the acidic base material and the basic base material are alternately arranged.
Preferably, the acidic substrate material is selected from organic acid-loaded substrate materials;
the alkaline base material is selected from base materials supporting alkaline substances.
Preferably, the organic acid is at least one selected from oxalic acid, citric acid, malic acid, tartaric acid and tannic acid.
Preferably, the alkaline substance is selected from at least one of sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium hydroxide and potassium hydroxide.
Preferably, the base material is at least one selected from cotton stick, sponge, acetate fiber stick, paper fiber stick, PLA fiber stick and non-woven filter stick.
According to a second aspect of the present invention, there is provided a method for preparing an acid-base combined filter tip, comprising the steps of:
(1) Placing the substrate material into a mixed solution containing organic acid and solvent, dipping and drying to obtain the acidic substrate material;
(2) Placing the base material into a mixed solution containing an alkaline substance and a solvent, dipping and drying to obtain the alkaline base material;
(3) And sequentially fixing the acidic substrate material and the alkaline substrate material in the filter tip shell to form the acid-base combined filter tip.
Preferably, in step (1) and step (2), the solvent is at least one selected from the group consisting of water, ethanol, ethylene glycol and glycerol.
Preferably, in the step (1), the mass concentration of the mixed solution containing the organic acid and the solvent is 1-3 wt%;
in the step (2), the mass concentration of the mixed solution containing the alkaline substance and the solvent is 1-5 wt%.
(III) beneficial effects
The invention provides an acid-base combined filter tip and a preparation method thereof. The beneficial effects are as follows:
according to the acid-base combined filter tip, the alkaline and acidic substances attached to the substrate material and the corresponding acidic and alkaline harmful substances in the smoke are subjected to neutralization reaction, so that the inhalation of harmful substances such as hydrogen cyanide, fumaric acid, phenolic substances, ammonia, nitride, nicotine and nitrosamine is effectively reduced. In addition, the invention adopts the base material and the acid-base treatment liquid which are environment-friendly and high in cost effectiveness, ensures the air permeability and the adsorptivity of the filter tip, and provides a smoking experience with health promotion. In addition, the filter tip of the invention is proved by experiments, and the result shows that the filter tip of the invention can obviously reduce the content of total particulate matters, tar and nicotine in smoke, and the adsorptivity of harmful components such as ammonia and the like can be greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of an acid-base combined filter tip provided by the invention;
FIG. 2 is a graph showing the results of the adsorption test of ammonia on the nonwoven fabric used in example 1 of the present invention;
fig. 3 is a graph showing the adsorption test result of ammonia by the acid-base combined filter tip prepared in example 1 of the present invention.
In the figure, 1, a filter housing; 2. an acidic base material; 3. an alkaline base material.
Detailed Description
For a better description of the present invention, the following description will be made with reference to specific embodiments. The invention provides a preparation method of an acid-base combined filter tip, which specifically comprises the following steps:
(1) Placing the substrate material into a mixed solution containing organic acid and solvent, dipping and drying to obtain an acidic substrate material;
(2) Placing the base material into a mixed solution containing an alkaline substance and a solvent, dipping and drying to obtain an alkaline base material;
(3) And sequentially fixing the acidic substrate material and the alkaline substrate material in the filter casing to form the acid-base combined filter.
In a specific embodiment, the organic acid is at least one selected from oxalic acid, citric acid, malic acid, tartaric acid, tannic acid. The organic acid selected by the invention can react with alkaline harmful substances in the smoke generated by the tobacco, has no volatility and can not cause the irritation of the smoke; are all substances which can be used as food additives.
In a specific embodiment, the alkaline substance is selected from at least one of sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium hydroxide and potassium hydroxide. The alkaline substances selected by the invention can react with acidic harmful substances in the smoke generated by the tobacco, and the reaction products (carbon dioxide, water and salt) are nontoxic; and has no volatility and irritation, and can be used as food additive … … in a reasonable dosage.
In a specific embodiment, the solvent is selected from at least one of water, ethanol, ethylene glycol, and glycerol.
In a specific embodiment, in the step (1), the mass concentration of the mixed solution containing the organic acid and the solvent is 1 to 3wt%;
In the step (2), the mass concentration of the mixed solution containing the alkaline substance and the solvent is 1 to 5wt%.
In a specific embodiment, the substrate material is selected from at least one of cotton stick, sponge, acetate fiber stick, paper fiber stick, PLA fiber stick, and nonwoven filter stick.
The acid-base combined filter tip obtained by the above preparation method, as shown in fig. 1, comprises a filter tip shell 1, and an acidic base material 2 and an alkaline base material 3 fixed in the filter tip shell 1.
In the present invention, the positions of the acidic base material 2 and the basic base material 3 in the filter housing 1 may be changed, and one acidic base material 2 and one basic base material 3 may be used as a set, and the filter housing 1 may be filled with 1 set or may be filled with a plurality of sets.
The base material selected by the invention is porous and breathable, and has large specific surface area, when the flue gas passes through, acidic substances attached to the base material can react with alkaline harmful substances in the flue gas, such as hydrogen cyanide, fumaric acid or phenolic substances, and the like, and alkaline substances attached to the base material can react with the acidic harmful substances in the flue gas, such as ammonia, nitride, nicotine or nitrosamine, and the like. The reacted substances can be attached to the substrate material and cannot flow along with the flue gas, so that harmful components in the flue gas are filtered.
The acid-base combined filter tip and the preparation method thereof are described below with reference to specific embodiments.
Example 1
Selecting cotton non-woven fabric with the volume density of 20kg/m 3 as a base material, immersing the cotton non-woven fabric in sodium carbonate aqueous solution with the mass concentration of 1wt% for 5min, and drying at 100 ℃ to obtain an alkaline base material; immersing cotton non-woven fabrics in a tannic acid aqueous solution with the mass concentration of 1wt% for 5min, and drying at 100 ℃ to obtain an acidic substrate material; and sequentially fixing the obtained acidic substrate material and the obtained alkaline substrate material in a filter tip shell to obtain the acid-base combined filter tip.
The clean cotton non-woven fabric and the prepared acid-base combined filter tip in the embodiment are respectively subjected to ammonia absorption test, and the cotton non-woven fabric and the filter tip after smoke is filtered through ion chromatography analysis are respectively shown in fig. 2 and 3, so that the adsorption performance of the acid-base combined filter tip on ammonia is improved by 27.31 times.
In addition, the filter tip is tested for the filtering effect of total particulate matters and tar according to the method specified in GB/T19609-2004, and the result shows that the total particulate matters and tar in the smoke after passing through the filter tip are reduced by 28.6 percent, and the tar is reduced by 20.2 percent; the nicotine filtration effect of this filter was tested as specified in standard GB/T23155-2009 and showed a 44.4% reduction in nicotine in the smoke after filtration.
Example 2
Selecting PET fiber rods with the volume density of 140kg/m 3 and the diameter of 7.2mm as a base material, immersing the fiber rods in sodium bicarbonate aqueous solution with the mass concentration of 2wt%, soaking for 5 minutes, and drying at 100 ℃ to obtain an alkaline base material; immersing the clean fiber rod in 5wt% citric acid aqueous solution for 5 min, and drying at 100 ℃ to obtain the acidic substrate material. And respectively cutting the two treated fiber rods into lengths of 10mm, and sequentially filling and fixing the fiber rods in a filter tip shell to obtain the acid-base combined filter tip.
The filter tip is tested for the filtering effect of total particulate matters and tar according to the method specified by the standard GB/T19609-2004, and the result shows that the total particulate matters of the smoke after passing through the filter tip are reduced by 31 percent, and the tar is reduced by 26.7 percent;
The nicotine filtration effect of the filter was tested as specified in standard GB/T23155-2009 and showed a 35.1% reduction in nicotine in the smoke after filtration.
The filter tip after filtering the flue gas is analyzed by an ion chromatography method, and the result shows that the adsorption performance of the base material after acid-base treatment on ammonia is improved by 105%.
Example 3
Selecting melamine sponge with the volume density of 50kg/m 3 and the thickness of 10mm as a base material, immersing the sponge in sodium hydroxide aqueous solution with the mass concentration of 3wt%, immersing for 5 minutes, and drying at 100 ℃ to obtain an alkaline base material; and immersing clean melamine sponge in 1wt% aqueous solution of malic acid for 5min, and drying at 100 ℃ to obtain the acidic substrate material. Cutting the two treated sponges into cylinders with the diameter of 7.5mm respectively, and sequentially filling and fixing the cylinders in a filter tip shell to obtain the acid-base combined filter tip.
The filter tip is tested for the filtering effect of total particulate matters and tar according to the method specified in the standard GB/T19609-2004, and the result shows that the total particulate matters of the smoke after passing through the filter tip are reduced by 39.1 percent, and the tar is reduced by 19.0 percent;
The nicotine filtration effect of the filter was tested as specified in standard GB/T23155-2009 and showed a 26.3% reduction in nicotine in the smoke after filtration.
The filter tip after filtering the flue gas is analyzed by an ion chromatography method, and the result shows that the adsorption performance of the base material after acid-base treatment on hydrogen cyanide is improved by 46%.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An acid-base combined filter tip, which is characterized in that: comprising a filter housing, an acidic base material and a basic base material secured within the filter housing.
2. An acid-base combined filter according to claim 1, wherein: the volume density of the acidic substrate material and the alkaline substrate material is 20-150 kg/m 3.
3. An acid-base combined filter according to claim 1, wherein: the acidic base material and the basic base material are alternately arranged.
4. An acid-base combined filter according to claim 1, wherein: the acidic base material is selected from base materials loaded with organic acids;
the alkaline base material is selected from base materials supporting alkaline substances.
5. The acid-base combined filter according to claim 4, wherein: the organic acid is at least one selected from oxalic acid, citric acid, malic acid, tartaric acid and tannic acid.
6. The acid-base combined filter according to claim 4, wherein: the alkaline substance is at least one selected from sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium hydroxide and potassium hydroxide.
7. The acid-base combined filter according to claim 4, wherein: the substrate material is at least one selected from cotton sticks, sponges, acetate fiber sticks, paper fiber sticks, PLA fiber sticks and non-woven fabric filter sticks.
8. A method for preparing an acid-base combined filter tip according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
(1) Placing the substrate material into a mixed solution containing organic acid and solvent, dipping and drying to obtain the acidic substrate material;
(2) Placing the base material into a mixed solution containing an alkaline substance and a solvent, dipping and drying to obtain the alkaline base material;
(3) And sequentially fixing the acidic substrate material and the alkaline substrate material in the filter tip shell to form the acid-base combined filter tip.
9. The method of manufacturing according to claim 8, wherein: in the step (1) and the step (2), the solvent is at least one selected from water, ethanol, glycol and glycerol.
10. The method of manufacturing according to claim 8, wherein: in the step (1), the mass concentration of the mixed solution containing the organic acid and the solvent is 1-3wt%;
in the step (2), the mass concentration of the mixed solution containing the alkaline substance and the solvent is 1-5 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410560513.1A CN118235882A (en) | 2024-05-08 | 2024-05-08 | Acid-base combined filter tip and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410560513.1A CN118235882A (en) | 2024-05-08 | 2024-05-08 | Acid-base combined filter tip and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118235882A true CN118235882A (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410560513.1A Pending CN118235882A (en) | 2024-05-08 | 2024-05-08 | Acid-base combined filter tip and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118235882A (en) |
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2024
- 2024-05-08 CN CN202410560513.1A patent/CN118235882A/en active Pending
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