CN108455340B - Carbonaceous heat source with double-layer winding structure and preparation method thereof - Google Patents
Carbonaceous heat source with double-layer winding structure and preparation method thereof Download PDFInfo
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- CN108455340B CN108455340B CN201810058984.7A CN201810058984A CN108455340B CN 108455340 B CN108455340 B CN 108455340B CN 201810058984 A CN201810058984 A CN 201810058984A CN 108455340 B CN108455340 B CN 108455340B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/28—Wound package of webs
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F47/00—Smokers' requisites not otherwise provided for
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Abstract
The invention discloses a carbon heat source with a double-layer winding structure, wherein the carbon heat source with the double-layer winding structure is cylindrical, the cylindrical shape is formed by winding a double-layer sheet material, one layer is a combustion layer (2), and the other layer is a supporting layer (1); the combustion layer (2) and the supporting layer (1) penetrate through the axial direction of the whole cylindrical carbon heat source; a central hole (3) is formed in the center of the cylindrical carbon heat source in the axial direction; the invention also discloses a preparation method of the cylindrical carbonaceous heat source. The carbonaceous heat source with the double-layer winding structure has stable burning rate and uniform heat release, and can reduce CO generation.
Description
Technical Field
The invention belongs to the technical field of tobacco products, and particularly relates to a carbonaceous heat source with a double-layer winding structure and a preparation method thereof.
Background
In recent years, as the health requirements of people are increasing. For the tobacco industry, the advent of new tobacco products is a revolution to accommodate this need. The new tobacco products can be roughly divided into four broad categories: the first category is electronic cigarettes, the second category is heated non-combustible tobacco products, the third category is buccal cigarettes, and the fourth category is other tobacco products. Among them, the non-combustible tobacco products are favored in the market because they sufficiently retain the texture of conventional tobacco. The main feature of heating non-combustible tobacco products is to heat the tobacco by an external heat source rather than to ignite the tobacco, which is the most essential difference from conventional tobacco. The carbonaceous heat source is a main heat source, and the performance of the carbonaceous heat source is directly related to the quality of tobacco. Low CO release and ensuring a smooth and suitable heat release are very important indicators of carbonaceous heat sources. To achieve this, a number of corresponding technical materials are disclosed. Patent CN1087497a discloses the addition of through non-combustible graphite as a thermally conductive material in the fuel element, thereby lowering the combustion temperature and reducing CO emissions. Patent CN101098635a discloses a carbonaceous heat source composition containing 30-55% calcium carbonate to reduce the combustion temperature and reduce CO emissions. Patent CN1046665a discloses a catalyst-containing component for the catalytic degradation of CO. However, the prior art is not very effective in reducing CO emissions, while at the same time, the control of combustion temperature and combustion rate is not very effective.
Disclosure of Invention
In order to solve the problems, the invention discloses a carbonaceous heat source with a double-layer winding structure and a preparation method thereof, and the carbonaceous heat source with the double-layer winding structure can reduce CO release of a non-combustible cigarette heated by charcoal and is very effective for controlling combustion temperature and rate.
The first aspect of the invention discloses a carbon heat source with a double-layer winding structure, wherein the carbon heat source with the double-layer winding structure is cylindrical, the cylindrical shape is formed by winding a double-layer sheet material, one layer is a combustion layer 2, and the other layer is a supporting layer 1; the combustion layer 2 and the supporting layer 1 penetrate through the whole cylindrical carbon heat source in the axial direction; the center of the cylindrical carbon heat source in the axial direction is provided with a center hole 3. Wherein the combustion layer 2 is made of a carbon material which is easy to burn.
Preferably, the support layer 1 has better thermal conductivity than the combustion layer 2. The good heat conduction performance of the supporting layer 1 ensures the combustion of a carbon heat source, the timely conduction of heat, the reduction of the combustion temperature and the reduction of CO. The supporting layer 1 is made of nonflammable or flame-retardant materials, can play a supporting role, avoid ash collapse generated in the combustion process, influence the diffusion of reaction gas, keep the stable rate of the whole combustion and realize uniform heat release.
Preferably, the support layer 1 and/or the combustion layer 2 have a plurality of raised lines on the surface of the layers, so that gaps are formed between the layers of the double-layer wound carbonaceous heat source and the raised lines of the layers. The supporting layer 1 or the combustion layer 2 is provided with a plurality of protruding lines, or the supporting layer 1 and the combustion layer 2 are provided with a plurality of protruding lines, so that gaps are reserved between the protruding lines of the layers, the carbon rod combustion speed can be adjusted, the combustion temperature can be controlled, and the CO generation can be reduced.
Preferably, the supporting layer 1 is a layer made of one or more materials selected from carbon nanotubes, graphite, graphene or graphene oxide.
The second aspect of the invention discloses a preparation method of the carbonaceous heat source with the double-layer winding structure, which comprises the following steps:
(1) Preparing double-layer paper containing pulp fibers and a supporting material; preferably, the pulp fiber is wood pulp fiber, and the heat conducting material is one or more of carbon nano tube, graphite, graphene or graphene oxide;
(2) Coating an adhesive on one surface of the double-layer paper obtained in the step (1), sticking paper wires at intervals along the axial direction, winding the double-layer paper into a cylindrical prefabricated rod along the axial vertical direction, leaving a central hole channel in the center of the prefabricated rod, and cutting the prefabricated rod into required lengths;
(3) And (3) carbonizing the cut prefabricated rod in the step (2) at high temperature to obtain the carbonaceous heat source with the double-layer winding structure.
Preferably, the preparation method of the double-layer paper containing pulp fibers and heat conducting materials comprises the following steps:
(1a) Dispersing a support material in a solvent to prepare a slurry; the solvent is one of ethanol water solution, dimethylformamide and ethanol;
(1b) Preparing paper pulp fibers into paper;
(1c) Coating the slurry obtained in the step (1 a) on one surface of the paper obtained in the step (1);
(1d) And (3) drying the paper obtained in the step (1 c) to obtain the double-layer paper.
Preferably, the preparation method of the double-layer paper containing pulp fibers and supporting materials comprises the following steps:
(2a) Dispersing a supporting material and a dispersing agent in water to prepare a suspension; the dispersing agent is one of alkyl glycoside and carboxymethyl cellulose.
(2b) Preparing paper pulp fibers into paper;
(2c) And (3) placing the paper obtained in the step (2 b) as a base material in a vacuum water suction tank, pouring the suspension obtained in the step (2 a) on the surface of the paper, and carrying out vacuum suction filtration to enable the heat conducting material to be uniformly attached to the surface of the paper, and drying to obtain the double-layer paper.
Preferably, the high-temperature carbonization temperature is 600-800 DEG C
The invention has the beneficial effects that:
(1) The support layer and the combustion layer of the carbonaceous heat source with the double-layer winding structure are wound, and the support layer and the combustion layer penetrate through the whole cylindrical carbonaceous heat source in the axial direction. The supporting layer has good heat conducting property, can ensure the combustion of the carbon rod, timely conduct heat, reduce the combustion temperature and reduce the generation of CO; in addition, the supporting layer 1 is a nonflammable or flame-retardant material, can play a supporting role, avoid ash collapse generated in the combustion process, influence the diffusion of gas, keep the stable rate of the whole combustion and realize uniform heat release.
(2) The supporting layer 1 or/and the combustion layer 2 of the carbonaceous heat source with the double-layer winding structure has a plurality of raised lines along the axial direction, so that gaps are arranged between the layers of the carbonaceous heat source with the double-layer winding structure and the raised lines of the layers, and the center of the cylindrical carbonaceous heat source in the axial direction is provided with a center hole, the gaps of the center holes and the diffusion of gas are facilitated, thereby being capable of adjusting the combustion speed of the carbonaceous heat source and controlling the combustion temperature.
(3) According to the invention, the carbon nano tube, the graphite, the graphene or the graphene oxide is used as the supporting layer of the carbonaceous heat source for the first time, and the effect of heat conduction and CO generation reduction is excellent.
(4) The preparation method of the carbonaceous heat source with the double-layer winding structure is simple.
Drawings
FIG. 1 is a schematic perspective view of a carbonaceous heat source according to the present invention;
FIG. 2 is a front view of a carbonaceous heat source of the invention;
FIG. 3 is a front view of a carbonaceous heat source of the invention having raised lines and apertures.
Reference numerals: 1-supporting layer, 2-burning layer, 3-central hole, 4-convex line.
Detailed Description
Examples
1. Preparation of double-layer paper
Class a paper: preparation of carbon nanotube/hardwood fiber paper
Adding the carbon nano tube and the alkyl glycoside dispersing agent into water according to the proportion of 1:0.6, and preparing the carbon nano tube suspension with the carbon nano tube concentration of 0.2 weight percent through ultrasonic treatment. Placing the prepared hard wood fiber paper on a vacuum water absorbing tank, and quantitatively weighing 5g/m 2 Pouring the carbon nanotube suspension, filtering, forming and drying to obtain carbon nanotube/hardwoodA fibrous paper.
Class B paper: preparation of graphite/hardwood fiber paper
Crushing expanded graphite by a stirrer, and adding the crushed expanded graphite and dispersant alkyl glycoside into water according to the proportion of 1:0.6 to prepare graphite suspension. Placing the prepared hard wood fiber paper on a vacuum water absorbing tank, and quantitatively weighing 5g/m 2 Casting graphite suspension, filtering, forming, drying, and rolling to obtain the final product.
Class C paper: preparation of graphene oxide/hardwood fiber paper
And adding 0.1wt% of carboxymethyl cellulose into the graphene oxide solution prepared by the hummer method to prepare graphene oxide slurry. And coating graphene oxide slurry on one surface of the prefabricated hardwood fiber paper, and drying to obtain the graphene oxide/hardwood fiber paper. And (3) injection: graphene oxide is reduced into graphene after high-temperature oxygen isolation treatment
2. Preparation of carbonaceous heat source with double-layer winding structure
Cutting the A-type paper, the B-type paper and the C-type paper into long strips respectively, and starting to wind respectively. Adding a hard wood paper wire soaked with CMC binder every 2mm in the axial direction, winding into a cylinder with the diameter of 5mm along the vertical direction of the axial direction, cutting into small sections with the length of 15mm, and carbonizing the cut small sections in a carbonization furnace at 700 ℃ to obtain the carbonaceous heat source with the double-layer winding structure. The method comprises the following steps: the carbon heat source with carbon nanotube as the supporting layer, graphite as the supporting layer and graphene as the supporting layer has the structure shown in figure 4, and the cylindrical carbon heat source is formed by alternately winding the combustion layer and the supporting layer, the center hole generated by winding is formed in the center of the carbon heat source, and a plurality of raised lines 4 are formed between the layers, so that pores are formed between the raised lines. The combustion performance is compared with a common carbonaceous heat source (control) as shown in the following table:
as is clear from the above table, the carbonaceous heat source with double-layer winding according to the present invention has a lower combustion temperature than the conventional carbonaceous heat source, and reduced CO generation, and has a longer combustion time and a lower combustion temperature than the conventional carbonaceous heat source.
Claims (4)
1. The preparation method of the carbonaceous heat source with the double-layer winding structure is characterized in that the carbonaceous heat source is cylindrical, the cylindrical shape is formed by winding double-layer sheet materials, one layer is a combustion layer (2), and the other layer is a supporting layer (1); the combustion layer (2) and the supporting layer (1) penetrate through the axial direction of the whole cylindrical carbon heat source; a central hole (3) is formed in the center of the cylindrical carbon heat source in the axial direction; the surface of the supporting layer (1) or/and the combustion layer (2) is provided with a plurality of protruding lines along the axial direction, so that gaps are arranged between the layers of the carbonaceous heat source with the double-layer winding structure and the protruding lines of the layers; the heat conduction performance of the supporting layer (1) is better than that of the combustion layer (2); the supporting layer (1) is a layer formed by one or more materials of carbon nano tubes, graphite or graphene;
the preparation method of the carbonaceous heat source with the double-layer winding structure comprises the following steps:
(1) Preparing double-layer paper containing pulp fibers and a supporting material; the paper pulp fibers are wood pulp fibers, and the supporting material is one or more of carbon nano tubes, graphite or graphene;
(2) Coating an adhesive on one surface of the double-layer paper obtained in the step (1), sticking paper wires at intervals along the axial direction, winding the double-layer paper into a cylindrical preform along the axial vertical direction, leaving a central hole channel in the center of the preform, and cutting the preform into a required length;
(3) And (3) carbonizing the cut prefabricated rod in the step (2) at high temperature to obtain the carbonaceous heat source with the double-layer winding structure.
2. The method according to claim 1, wherein the method for producing the double-ply paper containing pulp fibers and a supporting material comprises the steps of:
(1a) Dispersing a support material in a solvent to prepare a slurry; the solvent is one of ethanol water solution, dimethylformamide or ethanol;
(1b) Preparing paper pulp fibers into paper;
(1c) Uniformly coating the slurry obtained in the step (1 a) on one surface of the paper obtained in the step (1 b);
(1d) And (3) drying the paper obtained in the step (1 c) to obtain the double-layer paper.
3. The method according to claim 1, wherein the method for producing the double-ply paper containing pulp fibers and a supporting material comprises the steps of:
(2a) Dispersing a supporting material and a dispersing agent in water to prepare a suspension; the dispersing agent is one of alkyl glycoside and carboxymethyl cellulose;
(2b) Preparing paper pulp fibers into paper;
(2c) And (3) placing the paper obtained in the step (2 b) as a base material in a vacuum water suction tank, pouring the suspension obtained in the step (2 a) on the surface of the paper, and carrying out vacuum suction filtration to enable the supporting material to be uniformly attached to the surface of the paper, and drying to obtain the double-layer paper.
4. The method according to claim 1, wherein the high-temperature carbonization temperature is 600 ℃ to 800 ℃.
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| CN201810058984.7A CN108455340B (en) | 2018-01-22 | 2018-01-22 | Carbonaceous heat source with double-layer winding structure and preparation method thereof |
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| CN108455340B true CN108455340B (en) | 2023-08-04 |
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| CN109132622B (en) * | 2018-09-06 | 2023-09-19 | 重庆云天化瀚恩新材料开发有限公司 | Polymer Bao Mosong coil system of artificial graphite film precursor and application method |
| CN110200322A (en) * | 2019-06-05 | 2019-09-06 | 江苏中烟工业有限责任公司 | A kind of flue gas generation section generating system for constituting flue gas |
| CN113460812A (en) * | 2021-06-24 | 2021-10-01 | 湖北三江航天红阳机电有限公司 | Process method for improving drying efficiency of aerogel heat-insulating material coiled material |
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| CN102946747A (en) * | 2010-05-06 | 2013-02-27 | R.J.雷诺兹烟草公司 | Segmented smoking article |
| CN104452479A (en) * | 2014-11-05 | 2015-03-25 | 中国烟草总公司郑州烟草研究院 | Compounded cigarette paper with aluminum foil layer and application method thereof |
| CN104522882A (en) * | 2014-11-05 | 2015-04-22 | 中国烟草总公司郑州烟草研究院 | Heating non-combustion type tobacco product heated through paper |
| CN107319628A (en) * | 2017-05-27 | 2017-11-07 | 浙江中烟工业有限责任公司 | One kind is applied to heat incombustible tobacco matrixes and preparation method thereof |
| CN207918098U (en) * | 2018-01-22 | 2018-09-28 | 云南中烟工业有限责任公司 | A kind of carbonaceous heat source with double winding structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI121361B (en) * | 2008-01-22 | 2010-10-29 | Stagemode Oy | Tobacco product and process for its manufacture |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946747A (en) * | 2010-05-06 | 2013-02-27 | R.J.雷诺兹烟草公司 | Segmented smoking article |
| CN104452479A (en) * | 2014-11-05 | 2015-03-25 | 中国烟草总公司郑州烟草研究院 | Compounded cigarette paper with aluminum foil layer and application method thereof |
| CN104522882A (en) * | 2014-11-05 | 2015-04-22 | 中国烟草总公司郑州烟草研究院 | Heating non-combustion type tobacco product heated through paper |
| CN107319628A (en) * | 2017-05-27 | 2017-11-07 | 浙江中烟工业有限责任公司 | One kind is applied to heat incombustible tobacco matrixes and preparation method thereof |
| CN207918098U (en) * | 2018-01-22 | 2018-09-28 | 云南中烟工业有限责任公司 | A kind of carbonaceous heat source with double winding structure |
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