WO2023071046A1 - 一种碳棒加热不燃烧烟草制品 - Google Patents

一种碳棒加热不燃烧烟草制品 Download PDF

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Publication number
WO2023071046A1
WO2023071046A1 PCT/CN2022/084170 CN2022084170W WO2023071046A1 WO 2023071046 A1 WO2023071046 A1 WO 2023071046A1 CN 2022084170 W CN2022084170 W CN 2022084170W WO 2023071046 A1 WO2023071046 A1 WO 2023071046A1
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WIPO (PCT)
Prior art keywords
carbon
carbon rod
rod
heat
tobacco product
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PCT/CN2022/084170
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English (en)
French (fr)
Inventor
罗诚浩
陈义坤
黄龙
刘豪
王泽安
Original Assignee
湖北中烟工业有限责任公司
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Publication of WO2023071046A1 publication Critical patent/WO2023071046A1/zh

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    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/60—Constructional details
    • 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

Definitions

  • the invention relates to the field of novel heat-not-burn tobacco products, in particular to a carbon rod heat-not-burn tobacco product.
  • New tobacco products mainly refer to cigarette tobacco products that are different from traditional smoking methods, and can be divided into two types: smokeless and smoked according to the form of use. Among them, smoke-free products are represented by heat-not-burn tobacco products and electronic cigarettes. Smoke products mainly include snus, chewing tobacco, and chemical-containing tobacco products. At present, there are two types of products with no smoke on the market.
  • Heat-not-burn tobacco products are a new type of tobacco products that heat the cut tobacco through a special heating source. When heated, the nicotine and flavor substances in the cut tobacco volatilize to produce smoke to meet the needs of smokers. Different from traditional cigarettes, the shredded tobacco of non-combustible tobacco products is in a non-combustible state during puffing intervals, and the maximum heating temperature generally does not exceed 350°C, so as to minimize the harmful components produced by high-temperature combustion and cracking of tobacco.
  • Heat-not-burn tobacco products can be divided into “electrically heated tobacco products”, “fuel heated tobacco products” and “physical and chemical reaction heated tobacco products” according to different heating sources.
  • the product development and technical research of the electric heating smoking system are the most extensive, mainly including smoking sets, cartridges and chargers.
  • the pod When in use, the pod is inserted into the smoking set, and the pod is heated through the smoking set, so that the tobacco in the pod is heated without burning.
  • the pod is mainly composed of a tobacco raw material section, an empty pipe section, a cooling section, and a filter section, and the main raw material of the tobacco section is tobacco flakes.
  • Carbon is a combustible material with a long history of use in the world and a wide range of sources. Compared with electric heating and non-burning tobacco, heat-not-burn tobacco products prepared with carbon as a heat source are closer to traditional cigarette products in appearance, and are easily replaced by traditional cigarettes. accepted by consumers. In recent years, a lot of research and development work on carbon heat-not-burn tobacco products has been carried out in China, but unfortunately there are currently no carbon heat-not-burn tobacco products widely sold in the market. The main reasons are as follows: 1) The carbon rod is not easy to ignite, and the experience effect is poor.
  • the invention patent CN 103619198 B is named as a combustible heat source for smoking articles, including carbon and at least one ignition aid, and the ignition aid is selected from metal nitrates, chlorates, peroxides, thermites, intermetallic Materials, magnesium, zirconium, etc.; such as invention patent application number 201810918505 .4 Name a modified carbon material, its preparation method and application, using CuO as a modifier to modify the carbonaceous material, in addition, a special ignition device can be used to quickly ignite the carbon rod, such as application number 201610985613 .4 Invention patent Name An ignition device that can ignite charcoal heat-not-burn cigarettes.
  • the fuel section is provided with a central hole and a peripheral axial through hole, in which the central axial
  • the inner surface of the through hole is coated with an air-tight coating and connected with an air-insulating and thermally conductive baffle, and the other peripheral axial through holes are connected with radial through holes.
  • This design makes the air flowing through the central axial through hole
  • the carbon rod is preheated and then passes through the baffle to heat the smoking material for suction; the air required for the combustion of the carbon rod and the smoke generated enter through the peripheral axial through holes and flow out from the radial through holes.
  • This design can ensure Into the smoker's mouth is the air and the substances volatilized from the smoking material, which avoids the harm of CO in the smoke to the human body to the greatest extent.
  • this design due to the natural convection of the axial through hole around the carbon rod, this design has a low oxygen diffusion rate and lack of smoker suction, which may make the actual combustion stability of the carbon rod worse.
  • the center The airtight coating will fall off, oxidize and burn.
  • the carbon rod is not resistant to burning and cannot meet the needs of continuous deep smokers.
  • the length of the carbon rod is limited. Using flammable carbon or adding too many oxidants, catalysts, combustion aids and other substances into the carbon powder will easily cause the carbon rod to catch fire quickly and the burning time is short, which cannot meet the needs of the smoker.
  • Absorption time requirements on the contrary, the use of low volatile, graphitized relatively dense carbon or even pure carbon such as graphite powder, carbon fiber, coke, etc. as the raw material of carbon rods has the characteristics of fire resistance, but it is not easy to ignite.
  • the invention patent application number 201911263915.0 the name is flammable and burnable carbon heat source and its preparation method and use, and it is proposed to prepare carbon rods by carbon source deployment method, and the flammable carbon It is mixed with flame retardant carbon, and at the same time, it takes advantage of the characteristics of easy ignition of flammable carbon and strong fire resistance of flame retardant carbon, which ensures the dual advantages of flammability and combustion resistance of carbon rods.
  • this method of carbon source allocation takes into account the characteristics of ignition and combustion resistance, it may occur in the actual combustion process that the flammable carbon particles in the carbon rod burn rapidly and consume oxygen, and the oxygen supply of the refractory carbon particles is insufficient. Particles and non-combustible carbon particles compete for wind during combustion, and oxygen in the air exists, which may lead to incomplete combustion in the combustion flue gas, and then produce CO.
  • the present invention provides a carbon rod heat-not-burn tobacco product, which is long-lasting and resistant to burning and avoids incomplete combustion.
  • the technical solution of the present invention is a carbon rod heat-not-burn tobacco product, comprising a sequentially connected fuel section, a combustion smoke purification section, and a smoking smoke generation section.
  • the fuel section is provided with a coaxial first carbon rod and
  • the second carbon rod is filled with a filter agent in the combustion smoke purification section, and filled with tobacco raw materials in the smoking smoke generation section.
  • the ignition point and burning resistance of the first carbon rod and the second carbon rod are significantly different, so
  • the ignition point of the first carbon rod is 150-350°C
  • the burnout temperature of the first carbon rod is less than or equal to 600°C, and it is regarded as a flammable carbon rod
  • the ignition point of the second carbon rod is 300-600°C
  • the burnout temperature of the second carbon rod is less than or equal to 850°C, and it is regarded as a flame-retardant carbon rod.
  • coaxial double-layer carbon rods are combined in physical space to form a carbon heat source.
  • the inner layer is a solid carbon rod
  • the outer layer is Hollow carbon rod
  • the carbonaceous heat source formed can be directly ignited to generate high-temperature flue gas while preheating the air flowing through the surface of the first carbon rod and the second carbon rod.
  • the flammable carbon rod in this heat source can be ignited quickly, while the flame-retardant
  • the carbon rod can resist burning for a long time, and has the dual advantages of being flammable and resistant to burning.
  • the fuel section, the combustion flue gas purification section, and the smoking smoke generation section are connected in series in sequence.
  • the flue gas, hot air and the mixture of the two from the fuel section pass through the smoke After the gas purification section, it reaches the smoking smoke generation section, and uses the heat carried by the incoming gas to make the tobacco raw materials placed in the smoking smoke generation section undergo physical and chemical processes such as evaporation, volatilization, and pyrolysis to form smoke for smoking .
  • the second carbon rod is accommodated inside the first carbon rod, the inner surface of the first carbon rod is attached to the outer surface of the second carbon rod, and the first carbon rod is
  • the outer surface is provided with a groove for increasing the surface area of the first carbon rod, and the groove is provided with at least one, that is, the inner layer is a flame-retardant carbon rod, and the outer layer is a flammable carbon rod.
  • the relative position is fixed by force to achieve the wrapping of the flammable carbon rod on the flammable carbon rod.
  • the groove has any shape, including but not limited to cylindrical, square, triangular, wavy, spiral, irregular Shape to increase the contact area between the air and the outer surface of the flammable carbon rod.
  • the first carbon rod is accommodated inside the second carbon rod, the outer surface of the first carbon rod is partially attached to the inner surface of the second carbon rod, and the first carbon rod
  • Both the outer surface of the outer surface of the second carbon rod and the inner surface of the second carbon rod are provided with a slit for air flow, and the slit is provided with at least one, that is, the inner layer is a flammable carbon rod, and the outer layer is a flame retardant carbon rod.
  • the friction force of the contact surface fixes the relative position and fits together to realize the partial contact of the flame retardant carbon rod to the flammable carbon rod.
  • the gap is a gap of any shape and random distribution, and any shape includes but is not limited to cylindrical, square, triangular , wavy, spiral, irregular shape,.
  • the filter is a porous material loaded with metal oxides, which has the function of adsorbing and catalyzing the reaction between CO and oxygen, oxidizes CO in the incoming gas to CO2, and can absorb and capture part of the carbon dioxide carried in the incoming gas. Ash particles, carbon black and other small solid particles.
  • the metal oxide includes one or more of CuO, Fe2O3, MnO2, CeO2, and the loading amount of the metal oxide is 1-5%.
  • the loading method includes but not limited to impregnation method, precipitation method in the known technology method, redox method.
  • the porous material includes one or more of molecular sieves, zeolites, granular activated carbon, powdered alumina, and powdered titanium oxide.
  • molecular sieves molecular sieves
  • zeolites granular activated carbon
  • powdered alumina powdered alumina
  • titanium oxide powdered titanium oxide
  • the tobacco raw material includes one or more of tobacco powder, tobacco sheet, and cartridge.
  • the length of the first carbon rod is 1-2mm longer than the length of the second carbon rod, that is, the flammable carbon rod is 1-2mm longer than the flame-retardant carbon rod, and the length of the flame-retardant carbon rod in this program is 8-15mm, the reason for the difference in length is that there is a sequence of double-layer carbon rods when they burn.
  • the preheated air transfers heat to the flame-retardant carbon rods in the form of conduction, convection and radiation, increasing the temperature of the flame-retardant carbon rods, which is conducive to the ignition of the flame-retardant carbon rods, and then when the flammable carbon rods are in the late stage of combustion At this time, the flame retardant carbon rod can continue to burn, providing the heat needed for suction.
  • the first carbon rod includes one or more of fruit wood charcoal, chrysanthemum charcoal, cotton stalk charcoal, and tobacco charcoal, and the carbon element content of the first carbon rod is not less than 60%.
  • This type of carbon rod structure It is fluffy and contains flammable substances, the ignition point is 150-350°C, and the burnout temperature is less than or equal to 600°C. It can be used as a flammable carbon rod.
  • the second carbon rod includes one or more of graphite powder, carbon fiber, coke, bamboo charcoal, activated carbon, ugony charcoal, white charcoal, and Bincho charcoal, and the carbon element content of the second carbon rod is not less than 80%, this type of carbon rod has a compact structure and high carbon content, the ignition point is 300-600 °C, the burnout temperature is less than or equal to 850 °C, and it is resistant to burning and lasts for a long time.
  • the first carbon rod is used as a flammable carbon rod
  • the second carbon rod is used as a flame-retardant carbon rod for spatial combination to form a carbonaceous heat source for a composite double-layer carbon rod.
  • the flammable carbon rod in this heat source can be ignited quickly.
  • the flame retardant carbon rod can be burnt for a long time, and has the dual advantages of being flammable and burnable;
  • the double-layer carbon rod in the fuel section is different from the single carbon rod formed by blending flammable carbon and refractory carbon in the prior art, which overcomes the single carbon rod in the prior art due to the Carbon particles with different combustion characteristics oxidize and burn at the same time and interact with each other, resulting in incomplete combustion.
  • the double-layer carbon rods of this scheme have a sequence of combustion. First, the flammable carbon rods burn quickly to provide the heat required for suction.
  • the combustion flue gas and preheated air transfer heat to the flame-retardant carbon rods in the form of conduction, convection and radiation, which increases the temperature of the flame-retardant carbon rods, which is conducive to the ignition of the flame-retardant carbon rods, and then When the flammable carbon rod is in the late stage of combustion, the non-flammable carbon rod can continue to burn to provide the heat required for suction;
  • the porous material loaded with metal oxides filled in the combustion flue gas purification section can effectively oxidize the unburned CO, avoiding the harm of the flue gas generated by the combustion of carbon rods to the human body, and can effectively block the ash generated by the combustion of carbon rods Particles such as carbon black and so on are inhaled by the human body. At the same time, it can separate the carbon rod and the smoking smoke generation section, avoiding the direct contact of the end of the carbon rod with the stuff that is filled with the smoke, and reducing the material that can be smoked due to temperature. The volatilization of substances harmful to human health caused by excessively high levels.
  • Fig. 1 is a structural schematic diagram of the carbon rod heat-not-burn tobacco product described in this scheme
  • Example 2 is a schematic diagram of a longitudinal section of the fuel section of the carbon rod heat-not-burn tobacco product described in Example 1;
  • Example 3 is a schematic cross-sectional view of the fuel section of the carbon rod heat-not-burn tobacco product described in Example 1;
  • Example 4 is a schematic diagram of a longitudinal section of the fuel section of the carbon rod heat-not-burn tobacco product described in Example 2;
  • Example 5 is a schematic cross-sectional view of the fuel section of the carbon rod heat-not-burn tobacco product described in Example 2;
  • Fig. 6 is the combustion test data of the carbon rod heat-not-burn tobacco products prepared in Examples 1-3 and Comparative Example 1.
  • Fuel section In the figure: 1. Fuel section; 2. Combustion smoke purification section; 3. Inhalation smoke generation section; 4. First carbon rod; 41. Groove; 5. Second carbon rod; 6. Gap.
  • flammable carbon rod and “flammable carbon rod” refer to carbonaceous materials with a low ignition point and a relatively high ignition point, respectively.
  • the flammable carbon rod is equivalent to the first carbon rod described herein, and the flame retardant The carbon rod is equivalent to the second carbon rod described herein.
  • a carbon rod heat-not-burn tobacco product comprises a fuel section 1, a combustion smoke purification section 2, and a smoking smoke generation section 3 connected in sequence.
  • the fuel section 1 is provided with a coaxial first carbon rod 4 and a second carbon rod 5, the first carbon rod 4 and the second carbon rod 5 form a carbon heat source in the form of a double-layer carbon rod, the first carbon rod 4 and the second carbon rod 5
  • the ignition point and burning resistance of the second carbon rod 5 are significantly different.
  • the ignition point of the first carbon rod 4 is 150°C
  • the burnout temperature of the first carbon rod 4 is 600°C, which is regarded as a flammable carbon rod.
  • the ignition point of the second carbon rod 5 is 300°C, the burnout temperature of the second carbon rod 5 is less than or equal to 850°C, and it is regarded as a flame-retardant carbon rod, the first carbon rod 4 is chrysanthemum charcoal, and the first carbon rod 5
  • the carbon element content of rod 4 is 60%, and described second carbon rod 5 is coke, and the carbon element content of described second carbon rod 5 is 80%, and the length of flame-retardant carbon rod is positioned at 8mm, and the length of flammable carbon rod Located at 9mm, it is worth noting that the first carbon rod 4 and the second carbon rod 5 are analyzed by industrial analyzers for their moisture, volatile matter, fixed carbon and ash content to determine whether they meet the flammability requirements described in this plan.
  • the definition requirements of carbon rods and flame retardant carbon rods are selected after; the second carbon rod 5 is accommodated inside the first carbon rod 4, and the first carbon rod 4 is a hollow carbon rod, and the second carbon rod 5
  • the carbon rod 5 is a solid carbon rod, the first carbon rod 4 wraps the second carbon rod 5, the inner surface of the first carbon rod 4 is attached to the outer surface of the second carbon rod 5, and the
  • the outer surface of the first carbon rod 4 is provided with grooves (41) for increasing the surface area of the first carbon rod 4, there are two grooves (41), and the grooves (41) can be in any shape , such as a square groove (41), a groove shape, or a wave shape, or a spiral shape, etc.;
  • the combustion flue gas purification section 2 is filled with the filter agent, the filter agent is a porous material loaded with metal oxides, the metal oxide is Fe2O3, and the porous material is activated carbon powder with a particle size of less than 1mm, The metal oxide loads Fe2O3 with a mass content of 1% on the activated carbon powder by an impregnation method;
  • the smoking smoke generating section 3 is filled with 0.45g of tobacco raw material, and the tobacco raw material includes a mixture of tobacco powder and tobacco sheet;
  • the process of using the carbon heat-not-burn tobacco product described in this embodiment is as follows: use a match to directly ignite the outer layer of the flammable carbon rod, and the heat generated by the combustion of the flammable carbon rod heats the air flowing through the surface and the formed Flue gas, these airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered, the harmful gas CO in the flue gas is catalyzed and oxidized to CO2, and the purified airflow with a certain temperature is heated Smoking the tobacco raw material in the smoke generating section 3, releases smokeable smoke for the smoker to enjoy;
  • the heat is conducted to the inner layer of the non-flammable carbon rod.
  • the temperature reaches the ignition temperature of the non-flammable carbon rod
  • the non-flammable carbon rod will burn, and then continue to generate heat to heat the air flowing through the surface And the formed flue gas, these airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered off, and the harmful gas CO in the flue gas is catalyzed and oxidized to CO2, and the purified gas has a certain temperature
  • the airflow heats the tobacco sheet in the smoking smoke generation section 3, and continuously releases the smoke available for smoking for the smoker to enjoy.
  • a carbon rod heat-not-burn tobacco product comprises a fuel section 1, a combustion smoke purification section 2, and a smoking smoke generation section 3 connected in sequence.
  • the fuel section 1 is provided with a coaxial first carbon rod 4 and a second carbon rod 5, the first carbon rod 4 and the second carbon rod 5 form a carbon heat source in the form of a double-layer carbon rod, the first carbon rod 4 and the second carbon rod 5
  • the ignition point and burning resistance of the second carbon rod 5 are significantly different.
  • the ignition point of the first carbon rod 4 is 350°C
  • the burnout temperature of the first carbon rod 4 is 580°C, which is regarded as a flammable carbon rod.
  • the ignition point of the second carbon rod 5 is 600°C
  • the burnout temperature of the second carbon rod 5 is 750°C, which is regarded as a flame-retardant carbon rod.
  • the first carbon rod 4 includes a mixture of chrysanthemum charcoal and cotton stalk charcoal,
  • the carbon element content of described first carbon rod 4 is 62%
  • described second carbon rod 5 is the mixture of Uoka charcoal, white charcoal, Bincho charcoal, and the carbon element of described second carbon rod 5 is 86%, difficult
  • the length of the burning carbon rod is at 12mm
  • the length of the flammable carbon rod is at 13mm.
  • first carbon rod 4 and the second carbon rod 5 analyze their moisture, volatile matter, fixed carbon and The content of ash is selected after judging whether it meets the definition requirements of the flammable carbon rod and the flame retardant carbon rod described in this plan; the first carbon rod 4 is accommodated inside the second carbon rod 5, and the two Physical contact occurs through friction, the outer surface of the first carbon rod 4 is partially attached to the inner surface of the second carbon rod 5, and the outer surface of the first carbon rod 4 and the second carbon rod 5
  • the inner surface of each is provided with slits 6 for air circulation, and the slits 6 are provided with 3 on the first carbon rod 4, and 5 are provided on the second carbon rod 5, and the slits 6 can be arbitrarily distributed in any shape , the airflow can pass through without hindrance.
  • the combustion flue gas purification section 2 is filled with the filter agent, the filter agent is a porous material loaded with metal oxide, the metal oxide is MnO2, the porous material is a columnar shaped molecular sieve, and the metal oxide The substance is coated on the molecular sieve by precipitation method, and the load is 5%;
  • the smoking smoke generating section 3 is filled with 0.45g of tobacco raw material, and the tobacco raw material is an atomized sheet;
  • the process of using the carbon rod heat-not-burn tobacco product described in this embodiment is as follows: use a lighter to ignite the head of the combustible carbon rod in the center, and the heat generated by the combustion of the combustible carbon rod heats the air flowing through the surface and forms These airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered off, and the harmful gas CO in the flue gas is catalyzed and oxidized to CO2, and the purified airflow with a certain temperature
  • the tobacco sheet in the smoke generating section 3 is heated for smoking, and the smoke available for smoking is released for the smoker to enjoy.
  • the heat passes through conduction, convection and radiation to the refractory carbon rod in the inner layer.
  • the refractory carbon rod will burn and continue to generate heat
  • the air flowing through the surface is heated and the flue gas formed, these airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered off, and the harmful gas CO in the flue gas is catalyzed and oxidized to CO2,
  • the purified airflow with a certain temperature heats the tobacco sheet in the smoking smoke generating section 3, and releases smokeable smoke for the smoker to enjoy for a long time.
  • a carbon rod heat-not-burn tobacco product comprises a fuel section 1, a combustion smoke purification section 2, and a smoking smoke generation section 3 connected in sequence.
  • the fuel section 1 is provided with a coaxial first carbon rod 4 and a second carbon rod 5, the first carbon rod 4 and the second carbon rod 5 form a carbon heat source in the form of a double-layer carbon rod, the first carbon rod 4 and the second carbon rod 5
  • the ignition point and burning resistance of the second carbon rod 5 are significantly different.
  • the ignition point of the first carbon rod 4 is 300°C
  • the burnout temperature of the first carbon rod 4 is 580°C, which is regarded as a flammable carbon rod.
  • the ignition point of the second carbon rod 5 is 450°C, the burnout temperature of the second carbon rod 5 is less than or equal to 750°C, and it is regarded as a flame-retardant carbon rod, and the first carbon rod 4 is a mixture of chrysanthemum charcoal and tobacco charcoal,
  • the carbon content of the first carbon rod 4 is 75%
  • the second carbon rod 5 is a mixture of graphite powder and carbon fiber
  • the carbon content of the second carbon rod 5 is 85%
  • the first carbon Rod 4 and the second carbon rod 5 analyze the content of its moisture, volatile matter, fixed carbon and ash content to determine whether to meet the definition requirements of the flammable carbon rod and the flame retardant carbon rod described in this program by adopting an industrial analyzer;
  • the first carbon rod 4 is accommodated inside the second carbon rod 5, and the two are in physical contact by friction.
  • the length of the flame-retardant carbon rod is 12mm, and the length of the flammable carbon rod is 13mm.
  • the first carbon rod The outer surface of the rod 4 is partially attached to the inner surface of the second carbon rod 5, and the outer surface of the first carbon rod 4 and the inner surface of the second carbon rod 5 are provided with gaps for air flow 6. At least one slit 6 is provided, and the slit 6 can be of any shape, and the airflow can pass through without hindrance;
  • the combustion flue gas purification section 2 is filled with the filter agent, the filter agent is a porous material loaded with metal oxides, the metal oxides include CuO, CeO The mixture, the porous material is granular activated carbon, so Said metal oxide is carried on granular activated carbon by precipitation method CuO, CeO with a mass content of 3% mixture;
  • the smoking smoke generating section 3 is filled with 0.4g g tobacco raw material, the tobacco raw material is an atomized sheet;
  • the process of using the carbon rod heat-not-burn tobacco product described in this embodiment is as follows: use a lighter to ignite the head of the combustible carbon rod in the center, and the heat generated by the combustion of the combustible carbon rod heats the air flowing through the surface and forms These airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered off, and the harmful gas CO in the flue gas is catalyzed and oxidized to CO2, and the purified airflow with a certain temperature
  • the tobacco sheet in the smoke generating section 3 is heated for smoking, and the smoke available for smoking is released for the smoker to enjoy.
  • the heat passes through conduction, convection and radiation to the refractory carbon rod in the inner layer.
  • the refractory carbon rod will burn and continue to generate heat
  • the air flowing through the surface is heated and the flue gas formed, these airflows pass through the combustion flue gas purification section 2 under the action of suction force, in which the particles carried by the airflow are filtered off, and the harmful gas CO in the flue gas is catalyzed and oxidized to CO2,
  • the purified airflow with a certain temperature heats the tobacco sheet in the smoking smoke generating section 3, and releases smokeable smoke for the smoker to enjoy for a long time.
  • a carbon rod heat-not-burn tobacco product comprises a fuel section 1, a combustion smoke purification section 2, and a smoking smoke generation section 3 connected in sequence.
  • the charcoal of 30 parts by weight of 100 orders With the charcoal of 30 parts by weight of 100 orders, the wugang charcoal of 15 parts by weight of 200 orders, the fruit charcoal of 15 parts by weight of 1250 orders, the montmorillonite powder of 1.5 parts by weight of 1250 orders, the non-hydrous glutinous rice glue of 13.5 parts by weight of 200 orders, 25 parts by weight of water were mixed and stirred evenly in a mixer, and aged for 10 minutes.
  • a screw extruder was used to extrude the carbon rod.
  • the extrusion molding pressure was 2 MPa and the temperature was 85 ° C.
  • the extruded carbon The rods are dried in the air flow, and the temperature of the air is kept at 60°C, and the moisture content of the carbon rods after drying is lower than 10%.
  • the combustion flue gas purification section 2 is filled with the filter agent, which is a porous material loaded with metal oxides, the metal oxides include MnO2, the porous material is a molecular sieve, and the metal oxides pass through
  • the precipitation method loads MnO2 with a mass content of 1% on the molecular sieve;
  • the smoking smoke generating section 3 is filled with 0.45g of tobacco raw material, and the tobacco raw material includes one or more of tobacco powder and tobacco sheet.
  • a carbon rod heat-not-burn tobacco product comprises a fuel section 1, a combustion smoke purification section 2, and a smoking smoke generation section 3 connected in sequence.
  • the charcoal of 30 parts by weight of 100 orders With the charcoal of 30 parts by weight of 100 orders, the wugang charcoal of 15 parts by weight of 200 orders, the fruit charcoal of 15 parts by weight of 1250 orders, the montmorillonite powder of 1.5 parts by weight of 1250 orders, the non-hydrous glutinous rice glue of 13.5 parts by weight of 200 orders, 25 parts by weight of water were mixed and stirred evenly in a mixer, and aged for 10 minutes.
  • a screw extruder was used to extrude the carbon rod.
  • the extrusion molding pressure was 2 MPa and the temperature was 85 ° C.
  • the extruded carbon The rods are dried in the air flow, and the temperature of the air is kept at 60°C, and the moisture content of the carbon rods after drying is lower than 10%.
  • the combustion flue gas purification section 2 is filled with shredded tobacco
  • the smoking smoke generating section 3 is filled with 0.45g of tobacco raw material, and the tobacco raw material is tobacco powder.

Landscapes

  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段（1）、燃烧烟气净化段（2）、吸食烟气发生段（3），燃料段（1）设有同轴的第一碳棒（4）与第二碳棒（5），燃烧烟气净化段（2）内填充有过滤剂，吸食烟气发生段（3）内填充有烟草原料，第一碳棒（4）的着火点为150-350℃，第一碳棒（4）的燃尽温度小于等于600℃，第二碳棒（5）的着火点为300-600℃，第二碳棒（5）的燃尽温度小于等于850℃。这种碳棒加热不燃烧烟草制品持久耐烧，可避免不完全燃烧。

Description

一种碳棒加热不燃烧烟草制品 技术领域
本发明涉及加热不燃烧新型烟草制品领域，具体涉及一种碳棒加热不燃烧烟草制品。
 背景技术
新型烟草制品由于其减害特性逐渐取代卷烟等传统烟草制品成为研发热点。新型烟草制品主要是指区别于采用传统燃吸方式的卷烟烟草制品，根据使用形式可以分为无烟气、有烟气两类。其中无烟气产品以加热不燃烧型烟草制品和电子烟为代表。有烟气产品则主要包含口含烟、嚼烟，以及含化型烟草制品。目前市场上以无烟气的两类产品居多。
传统卷烟在抽吸时烟草处于高温燃烧状态，容易生成焦油、苯并芘、小分子气体污染物等。加热非燃烧型烟草制品（又名低温卷烟）是通过特殊的加热源对烟丝进行加热，加热时烟丝中的尼古丁及香味物质通过挥发产生烟气来满足吸烟者需求的一种新型烟草制品。与传统卷烟不同，在抽吸间歇加热非燃烧型烟草制品的烟丝处于非燃烧状态，加热温度最高一般不超过350°C，从而尽可能减少烟草高温燃烧裂解产生的有害成分。
加热非燃烧型烟草制品按照加热源的不同，可分为“电加热型烟草制品”、“燃料加热型烟草制品”和“理化反应加热型烟草制品”。在加热不燃烧烟草制品的三个种类中，电加热吸烟系统产品开发和技术研究最为广泛，主要包括烟具、烟弹和充电器组成。使用时将烟弹插入烟具中，通过烟具给烟弹加热，使烟弹中的烟草即热而不燃烧。烟弹主要由烟草原料段、空管段、降温段、滤嘴段组成，其中烟草段主要原料为烟草薄片。
 技术问题
碳是世界上使用历史悠久，来源广泛的可燃材料，与电加热不燃烧烟相比，以碳作为热源所制备的加热不燃烧烟草制品在外形上与传统的卷烟制品较为接近，容易被传统卷烟的消费者所接受。国内近年来也开展了较多的碳加热不燃烧烟草制品的研发工作，但是遗憾的是目前在市场上并未有广泛销售的碳加热不燃烧烟草制品。主要原因分析如下：1）碳棒不易点燃，体验效果差。虽然碳加热不燃烧烟外形和传统卷烟相似，但是由于碳棒的着火温度远高于烟草，采用火柴或者打火机点燃较为困难，常用的解决方式就是在炭棒配方中加入催化剂、助燃剂等物质，如发明专利CN 103619198 B名称为用于发烟制品的可燃热源，包括碳和至少一种点火助剂，点火助剂选自由金属硝酸盐、氯酸盐、过氧化物、铝热材料、金属间材料、镁、锆等；如发明专利申请号201810918505 .4名称一种改性炭材料、其制备方法及用途，使用CuO作为改性剂改性碳质材料，此外，还可以采用特殊的点燃器具快速点燃碳棒，如申请号 201610985613 .4发明专利名称一种可点燃炭加热不燃烧卷烟的点燃器具采用激光器和聚光透镜形成高温快速点燃碳棒；2)碳棒燃烧时产生的烟气含有有害气体CO，可能对人体健康产生危害。为了降低碳棒燃烧过程中CO的产生量，进而避免进入人体肺部，目前通常的做法就是在碳棒制备的过程中加入催化剂，这些催化剂通常在固体燃料如煤、碳、石墨等的燃烧过程中被使用以提高燃烧效率，如碱金属碱土金属的氧化物、碳酸盐、硝酸盐、氯化物，或者过渡金属的氧化物及盐类物质；除了在碳棒原料配方上进行改进之外，还可以通过改善烟支结构降低CO的吸入量，如发明专利201610466840.6，名称一种气路分离式燃料加热型烟草制品，在燃料段上分别设置中心孔以及周边轴向通孔，其中中心轴向通孔的内表面涂有不透气涂层，并与隔气且导热性挡板相连，其他周边轴向通孔与径向通孔相连，该种设计使得流经中心轴向通孔的空气被碳棒预热然后经过挡板来加热发烟材料，供抽吸；碳棒燃烧所需要的空气以及产生的烟气由周边轴向通孔进入，从径向通孔流出，该种设计可以保证进入抽吸者的口中是空气和发烟材料挥发出来的物质，最大限度的避免了烟气中CO对人体的危害。但是该种设计由于碳棒周边轴向通孔属于自然对流，氧的扩散速度较低，缺乏吸烟者吸力，可能使得碳棒的实际燃烧稳定性变差，此外，随着碳棒的燃烧，中心不透气涂层会脱落、氧化和燃烧，此时将不再起到隔绝烟气甚至还会产生更多的有毒有害物质；3）碳棒不耐烧，不能满足持续深度吸烟者的需求。碳棒的长度有限，采用易燃碳或者在碳粉体中掺入过多的氧化剂、催化剂、助燃剂之类的物质，容易导致碳棒着火快，燃烧时间短，无法满足抽吸者的抽吸时间要求，反之，采用低挥发分、石墨化相对致密的碳甚至纯碳如石墨粉、碳纤维、焦炭等作为碳棒的原料具有耐烧的特点，但是不容易点燃。鉴于着火与耐烧二者存在难以兼容的特性，发明专利申请号201911263915 .0、名称易燃耐烧碳质热源及其制备方法和用途提出采用碳源调配的方法制备碳棒，将易燃碳和难燃碳进行掺混，同时发挥易燃碳容易点火、难燃碳持火耐烧性强的特点，保证了碳棒的易燃耐烧双重优点。该种碳源调配的方法虽然兼顾了着火和耐烧特性，但是实际燃烧过程中可能出现碳棒中易燃碳颗粒快速燃烧耗氧、难燃碳颗粒燃烧供氧不足的情况，由于易燃碳颗粒与难燃碳颗粒在燃烧时的竞争抢风，空气中的氧气，现象存在，可能导致燃烧烟气中出现不完全燃烧现象，进而产生CO。
 技术解决方案
为解决上述问题，本发明提供一种碳棒加热不燃烧烟草制品，持久耐烧、避免不完全燃烧。
本发明的技术方案是，一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段、燃烧烟气净化段、吸食烟气发生段，所述燃料段设有同轴的第一碳棒与第二碳棒，所述燃烧烟气净化段内填充有过滤剂，所述吸食烟气发生段内填充有烟草原料，第一碳棒和第二碳棒的着火点、耐烧特性显著不同，所述第一碳棒的着火点为150-350℃，所述第一碳棒的燃尽温度小于等于600℃，视为易燃碳棒，所述第二碳棒的着火点为300-600℃，所述第二碳棒的燃尽温度小于等于850℃，视为难燃碳棒，本方案采用同轴的双层碳棒在物理空间进行复合形成碳质热源，内层为实心碳棒，外层为中空碳棒，形成的碳质热源可以直接点燃产生高温烟气同时预热流经第一碳棒和第二碳棒表面的空气，该热源中易燃型碳棒可以迅速点燃，而难燃型碳棒可以耐烧持久，具有易燃耐烧的双重优点，燃料段、燃烧烟气净化段、吸食烟气发生段依次串联，来自燃料段的烟气、热空气以及二者的混合气经过烟气净化段后，到达吸食烟气发生段，利用来流气体所携带的热量使得吸食烟气发生段所放置的烟草原料发生蒸发、挥发、热解等物理化学过程，形成可供吸食的烟气。
优选地，所述第二碳棒容置于所述第一碳棒的内部，所述第一碳棒的内表面与所述第二碳棒的外表面贴合，所述第一碳棒的外表面设有用于增大所述第一碳棒表面积的凹槽，所述凹槽至少设有一个，即内层为难燃碳棒，外层为易燃碳棒，二者通过接触表面的摩擦力固定相对位置而贴合，实现易燃碳棒对难燃碳棒的包裹，所述凹槽具有任意形状，任意形状包括但不限于圆柱状、方形、三角形、波浪状、螺旋状、不规则形状，以增大空气与易燃碳棒外表面的接触面积。
优选地，所述第一碳棒容置于所述第二碳棒的内部，所述第一碳棒的外表面与所述第二碳棒的内表面部分贴合，所述第一碳棒的外表面及所述第二碳棒的内表面均设有用于供气流流通的缝隙，所述缝隙至少设有一个，即内层为易燃碳棒，外层为难燃碳棒，二者通过接触表面的摩擦力固定相对位置而贴合，实现难燃碳棒对易燃碳棒的部分接触，所述缝隙为任意形状且任意分布的缝隙，任意形状包括但不限于圆柱状、方形、三角形、波浪状、螺旋状、不规则形状，。
优选地，所述过滤剂为负载有金属氧化物的多孔材料，该材料具有吸附、催化CO和氧气反应的功能，将来流气体中的CO氧化为CO2，同时可以吸附捕获部分来流气体中携带的灰颗粒、炭黑等固体小颗粒。
优选地，所述金属氧化物包括CuO、Fe2O3、MnO2、CeO2中的一种或几种，金属氧化物的负载量为1-5%，负载方法包括但不限于公知技术中的浸渍法、沉淀法、氧化还原法。
优选地，所述多孔材料包括分子筛、沸石、颗粒活性炭、粉末氧化铝、粉末氧化钛中的一种或几种，一方面是作为金属氧化物的载体，另一方面作为吸附材料使用。
优选地，所述烟草原料包括烟草粉末、烟草薄片、烟弹中的一种或几种。
优选地，所述第一碳棒的长度比所述第二碳棒的长度长1-2mm，即易燃碳棒比难燃碳棒长1-2mm，本方案中难燃碳棒的长度为8-15mm，设置长度差的原因在于，双层碳棒在燃烧时存在先后顺序，首先易燃型碳棒很快着火燃烧，提供抽吸所需要的热量，与此同时，燃烧的烟气和预热的空气将热量通过传导、对流和辐射的形式传递给难燃碳棒，提升了难燃型、碳棒的温度，有利于难燃碳棒的着火，进而当易燃碳棒处于燃烧后期时，难燃碳棒可以继续燃烧，提供抽吸所需要的热量。
优选地，所述第一碳棒包括果木炭、菊花炭、棉杆炭、烟草炭中的一种或几种，所述第一碳棒的碳元素含量不小于60%，此类炭棒结构蓬松且含有易燃物质，着火点为150-350℃，燃尽温度小于等于600℃，可作为易燃碳棒使用。
优选地，所述第二碳棒包括石墨粉、碳纤维、焦炭、竹炭、活性炭、乌冈炭、白炭、备长炭中的一种或几种，所述第二碳棒的炭元素含量不小于80%，此类炭棒结构紧密且含碳量高，着火点为300-600℃，燃尽温度小于等于850℃，耐烧持久。
 有益效果
本发明的有益效果在于：
1.本方案将第一碳棒作为易燃炭棒，第二碳棒作为难燃碳棒进行空间组合，形成复合型双层碳棒的碳质热源，该热源中易燃碳棒可以迅速点燃，而难燃碳棒可以耐烧持久，具有易燃耐烧的双重优点；
2.燃料段内的双层碳棒，与现有技术中采用易燃碳和难燃碳掺配形成的单只碳棒不同，克服了现有技术中单只碳棒因在燃烧过程中由于不同燃烧特性的碳颗粒同时氧化燃烧而相互影响导致燃烧不完全的现象，本方案的双层碳棒在燃烧时存在先后顺序，首先易燃碳棒很快着火燃烧，提供抽吸所需要的热量，与此同时，燃烧的烟气和预热的空气将热量通过传导、对流和辐射的形式传递给难燃碳棒，提升了难燃碳棒的温度，有利于难燃碳棒的着火，进而当易燃型碳棒处于燃烧后期时，难燃碳棒可以继续燃烧，提供抽吸所需要的热量；
3.燃烧烟气净化段填充的负载有金属氧化物的多孔材料可以有效氧化未燃尽的CO，避免了碳棒燃烧产生的烟气对人体的危害，另外可以有效阻挡碳棒燃烧产生的灰分、炭黑等颗粒物被人体吸入，同时可以隔开碳棒与吸食烟气发生段，避免碳棒末端直接与所填充的可供吸食烟气的物质接触，减少可供吸食烟气的物质由于温度过高所导致的对人体健康有害的物质的挥发。
 附图说明
图1为本方案所述的碳棒加热不燃烧烟草制品的结构示意图；
图2为实施例1所述的碳棒加热不燃烧烟草制品的燃料段纵截面示意图；
图3为实施例1所述的碳棒加热不燃烧烟草制品的燃料段横截面示意图；
图4为实施例2所述的碳棒加热不燃烧烟草制品的燃料段纵截面示意图；
图5为实施例2所述的碳棒加热不燃烧烟草制品的燃料段横截面示意图；
图6为实施例1-3及对比例1所制备的碳棒加热不燃烧烟草制品的燃烧测试数据。
图中：1、燃料段；2、燃烧烟气净化段；3、吸食烟气发生段；4、第一碳棒；41、凹槽；5、第二碳棒；6、缝隙。
 本发明的实施方式
下面结合实施例对本发明作进一步的详细描述。
本领域技术人员将会理解，下列实施例仅用于说明本发明，而不应视为限定本发明的范围。实施例中未注明具体技术或条件者，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者，均为可以通过购买获得的常规产品。
在本文中所披露的范围的端点和任何值都不限于该精确的范围或值，这些范围或值应当理解为包含接近这些范围或值的值。对于数值范围来说，各个范围的端点值之间、各个范围的端点值和单独的点值之间，以及单独的点值之间可以彼此组合而得到一个或多个新的数值范围，这些数值范围应被视为在本文中具体公开。
如本文所用的术语“易燃碳棒”和“难燃碳棒”分别是指着火点偏低和着火点偏高的碳质材料，易燃碳棒等同于本文所述的第一碳棒，难燃碳棒等同于本文所述的第二碳棒。
实施例1
一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段1、燃烧烟气净化段2、吸食烟气发生段3。
所述燃料段1设有同轴的第一碳棒4与第二碳棒5，第一碳棒4与第二碳棒5组成双层碳棒形式的碳质热源，第一碳棒4和第二碳棒5的着火点、耐烧特性显著不同，所述第一碳棒4的着火点为150℃，所述第一碳棒4的燃尽温度为600℃，视为易燃碳棒，所述第二碳棒5的着火点为300℃，所述第二碳棒5的燃尽温度小于等于850℃，视为难燃碳棒，所述第一碳棒4为菊花炭，所述第一碳棒4的碳元素含量为60%，所述第二碳棒5为焦炭，所述第二碳棒5的炭元素含量为80%，难燃碳棒的长度位于8mm，易燃碳棒的长度位于9mm，值得注意的是，所述第一碳棒4及第二碳棒5通过采用工业分析仪分析其水分、挥发分、固定碳和灰分的含量以判定是否符合本方案所述的易燃碳棒、难燃碳棒的定义要求后选定；所述第二碳棒5容置于所述第一碳棒4的内部，所述第一碳棒4为中空碳棒，所述第二碳棒5为实心碳棒，所述第一碳棒4包裹所述第二碳棒5，所述第一碳棒4的内表面与所述第二碳棒5的外表面贴合，所述第一碳棒4的外表面设有用于增大所述第一碳棒4表面积的凹槽（41），所述凹槽（41）有2个，所述凹槽（41）可以为任意形态，如方形凹槽（41）、沟槽状，也可是波浪状，也可以是螺旋状等；
所述燃烧烟气净化段2填充有所述过滤剂，所述过滤剂为负载有金属氧化物的多孔材料，所述金属氧化物为Fe2O3，所述多孔材料为颗粒尺寸小于1mm的活性炭粉末，所述金属氧化物通过浸渍法在活性炭粉末上负载质量含量1%的Fe2O3；
所述吸食烟气发生段3内填充有0.45g烟草原料，所述烟草原料包括烟草粉末、烟草薄片的混合物；
本实施例所述的碳棒加热不燃烧烟草制品在使用时的过程如下：采用火柴直接点燃外层的易燃碳棒，易燃碳棒燃烧产生的热量加热了流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草原料，释放出可供吸食的烟气供抽吸者享用；
随着易燃碳棒的持续燃烧，热量经过传导到内层难燃碳棒，当温度达到难燃碳棒的着火温度时，难燃碳棒会燃烧，进而持续产生热量加热流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草薄片，持续释放出可供吸食的烟气供抽吸者享用。
实施例2
一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段1、燃烧烟气净化段2、吸食烟气发生段3。
所述燃料段1设有同轴的第一碳棒4与第二碳棒5，第一碳棒4与第二碳棒5组成双层碳棒形式的碳质热源，第一碳棒4和第二碳棒5的着火点、耐烧特性显著不同，所述第一碳棒4的着火点为350℃，所述第一碳棒4的燃尽温度为580℃，视为易燃碳棒，所述第二碳棒5的着火点为600℃，所述第二碳棒5的燃尽温度为750℃，视为难燃碳棒，所述第一碳棒4包括菊花炭、棉杆炭的混合物，所述第一碳棒4的碳元素含量为62%，所述第二碳棒5为乌冈炭、白炭、备长炭的混合物，所述第二碳棒5的炭元素为86%，难燃碳棒的长度位于12mm，易燃碳棒的长度位于13mm，值得注意的是，所述第一碳棒4及第二碳棒5通过采用工业分析仪分析其水分、挥发分、固定碳和灰分的含量以判定是否符合本方案所述的易燃碳棒、难燃碳棒的定义要求后选定；所述第一碳棒4容置于所述第二碳棒5的内部，二者通过摩擦力发生物理接触，所述第一碳棒4的外表面与所述第二碳棒5的内表面部分贴合，所述第一碳棒4的外表面及所述第二碳棒5的内表面均设有用于供气流流通的缝隙6，所述缝隙6在第一碳棒4设有3个，在第二碳棒5设有5个，所述缝隙6可以是任意形状任意分布，气流可以无阻碍通过。
所述燃烧烟气净化段2填充有所述过滤剂，所述过滤剂为负载有金属氧化物的多孔材料，所述金属氧化物为MnO2，所述多孔材料为柱状成型分子筛，所述金属氧化物通过沉淀法涂覆于所述分子筛上，负载量为5%；
所述吸食烟气发生段3内填充有0.45g烟草原料，所述烟草原料为雾化薄片；
本实施例所述的碳棒加热不燃烧烟草制品在使用时的过程如下：采用打火机点燃中心的易燃碳棒的头部，易燃碳棒燃烧产生的热量加热了流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草薄片，释放出可供吸食的烟气供抽吸者享用。
随着内层易燃碳棒的持续燃烧，热量经过传导、对流和辐射到内层难燃碳棒，当温度达到难燃碳棒的着火温度时，难燃碳棒会燃烧，进而持续产生热量加热流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草薄片，释放出可供吸食的烟气供抽吸者持续长时间享用。
实施例3
一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段1、燃烧烟气净化段2、吸食烟气发生段3。
所述燃料段1设有同轴的第一碳棒4与第二碳棒5，第一碳棒4与第二碳棒5组成双层碳棒形式的碳质热源，第一碳棒4和第二碳棒5的着火点、耐烧特性显著不同，所述第一碳棒4的着火点为300℃，所述第一碳棒4的燃尽温度为580℃，视为易燃碳棒，所述第二碳棒5的着火点为450℃，所述第二碳棒5的燃尽温度小于等于750℃，视为难燃碳棒，所述第一碳棒4为菊花炭、烟草炭的混合物，所述第一碳棒4的碳元素含量为75%，所述第二碳棒5为石墨粉、碳纤维的混合物，所述第二碳棒5的炭元素含量为85%，所述第一碳棒4及第二碳棒5通过采用工业分析仪分析其水分、挥发分、固定碳和灰分的含量以判定是否符合本方案所述的易燃碳棒、难燃碳棒的定义要求；所述第一碳棒4容置于所述第二碳棒5的内部，二者通过摩擦力发生物理接触，难燃碳棒的长度位于12mm，易燃碳棒的长度位于13mm，所述第一碳棒4的外表面与所述第二碳棒5的内表面部分贴合，所述第一碳棒4的外表面及所述第二碳棒5的内表面均设有用于供气流流通的缝隙6，所述缝隙6至少设有一个，所述缝隙6可以是任意形状，气流可以无阻碍通过；
所述燃烧烟气净化段2填充有所述过滤剂，所述过滤剂为负载有金属氧化物的多孔材料，所述金属氧化物包括CuO、CeO2的混合物，所述多孔材料为颗粒活性炭，所述金属氧化物通过沉淀法在颗粒活性炭上负载质量含量3%的CuO、CeO2的混合物；
所述吸食烟气发生段3内填充有0.4g g烟草原料，所述烟草原料为雾化薄片；
本实施例所述的碳棒加热不燃烧烟草制品在使用时的过程如下：采用打火机点燃中心的易燃碳棒的头部，易燃碳棒燃烧产生的热量加热了流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草薄片，释放出可供吸食的烟气供抽吸者享用。
随着内层易燃碳棒的持续燃烧，热量经过传导、对流和辐射到内层难燃碳棒，当温度达到难燃碳棒的着火温度时，难燃碳棒会燃烧，进而持续产生热量加热流过表面的空气和形成的烟气，这些气流在抽吸力的作用下经过燃烧烟气净化段2，其中气流携带的颗粒被过滤下来，烟气中有害气体CO被催化氧化为CO2，经过净化的具有一定温度的气流加热吸食烟气发生段3的烟草薄片，释放出可供吸食的烟气供抽吸者持续长时间享用。
对比例1
一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段1、燃烧烟气净化段2、吸食烟气发生段3。
将100目的30重量份的木炭、200目的15重量份的乌冈炭、1250目的15重量份的果木炭、1250的目1.5重量份的蒙脱石粉、200目的13.5重量份的不含水糯米胶、25重量份的水在混炼机中进行混合搅拌均匀，并陈化10分钟，采用螺杆挤出成型机将碳棒挤出，挤出成型压力为2MPa且温度为85℃，将挤出的碳棒在空气流中干燥，保持空气的温度为60℃，干燥后碳棒的水分含量低于10％。将2重量份苹果酸钾溶解在100重量份的水中，然后将碳棒浸渍在溶液中保持不少于2秒后取出，吹走碳棒表面的液滴，然后将碳棒放入微波加热腔体中，调整微波的功率，保证加热腔体中流动的空气温度在105℃，得到燃料段1。
所述燃烧烟气净化段2填充有所述过滤剂，所述过滤剂为负载有金属氧化物的多孔材料，所述金属氧化物包括MnO2，所述多孔材料为分子筛，所述金属氧化物通过沉淀法在分子筛上负载质量含量1%的MnO2；
所述吸食烟气发生段3内填充有0.45g烟草原料，所述烟草原料包括烟草粉末、烟草薄片中的一种或几种。
对比例2
一种碳棒加热不燃烧烟草制品，包括依次连接的燃料段1、燃烧烟气净化段2、吸食烟气发生段3。
将100目的30重量份的木炭、200目的15重量份的乌冈炭、1250目的15重量份的果木炭、1250的目1.5重量份的蒙脱石粉、200目的13.5重量份的不含水糯米胶、25重量份的水在混炼机中进行混合搅拌均匀，并陈化10分钟，采用螺杆挤出成型机将碳棒挤出，挤出成型压力为2MPa且温度为85℃，将挤出的碳棒在空气流中干燥，保持空气的温度为60℃，干燥后碳棒的水分含量低于10％。将2重量份苹果酸钾溶解在100重量份的水中，然后将碳棒浸渍在溶液中保持不少于2秒后取出，吹走碳棒表面的液滴，然后将碳棒放入微波加热腔体中，调整微波的功率，保证加热腔体中流动的空气温度在105℃，得到燃料段1。
所述燃烧烟气净化段2填充烟丝；
所述吸食烟气发生段3内填充有0.45g烟草原料，所述烟草原料为烟草粉末。
测试数据
选取上述实施例1-3及对比例1-2制备的碳棒加热不燃烧烟草制品在空气中进行燃烧试验以测定燃烧效果，各参数的具体试验结果示于图6中，其中，“表面燃烧速率(cm/min)”是燃料段1表面红热的燃烧线的移动速率，即表面燃烧速率越快可表明更容易燃烧，而“整体燃烧速率(cm/min)”是指单位长度的燃料段1能够燃烧时间的倒数，即整体燃烧速率越慢可表明燃烧更长时间。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何属于本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (10)

  1. 一种碳棒加热不燃烧烟草制品，其特征在于，包括依次连接的燃料段（1）、燃烧烟气净化段（2）、吸食烟气发生段（3），所述燃料段（1）设有同轴的第一碳棒（4）与第二碳棒（5），所述燃烧烟气净化段（2）内填充有过滤剂，所述吸食烟气发生段（3）内填充有烟草原料，所述第一碳棒（4）的着火点为150-350℃，所述第一碳棒（4）的燃尽温度小于等于600℃，所述第二碳棒（5）的着火点为300-600℃，所述第二碳棒（5）的燃尽温度小于等于850℃。
  2. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述第二碳棒（5）容置于所述第一碳棒（4）的内部，所述第一碳棒（4）的内表面与所述第二碳棒（5）的外表面贴合，所述第一碳棒（4）的外表面设有用于增大所述第一碳棒（4）表面积的凹槽（41），所述凹槽（41）至少设有一个。
  3. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述第一碳棒（4）容置于所述第二碳棒（5）的内部，所述第一碳棒（4）的外表面与所述第二碳棒（5）的内表面部分贴合，所述第一碳棒（4）的外表面及所述第二碳棒（5）的内表面均设有用于供气流流通的缝隙（6），所述缝隙（6）至少设有一个。
  4. 根据权利要求2或3所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述过滤剂为负载有金属氧化物的多孔材料。
  5. 根据权利要求4所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述金属氧化物包括CuO、Fe 2O 3、MnO 2、CeO 2中的一种或几种。
  6. 根据权利要求4所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述多孔材料包括分子筛、沸石、颗粒活性炭、粉末氧化铝、粉末氧化钛中的一种或几种。
  7. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述烟草原料包括烟草粉末、烟草薄片、雾化薄片中的一种或几种。
  8. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述第一碳棒（4）的长度比所述第二碳棒（5）的长度长1-2mm。
  9. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述第一碳棒（4）包括果木炭、菊花炭、棉杆炭、烟草炭中的一种或几种，所述第一碳棒（4）的碳元素含量不小于60%。
  10. 根据权利要求1所述的一种碳棒加热不燃烧烟草制品，其特征在于，所述第二碳棒（5）包括石墨粉、碳纤维、焦炭、竹炭、活性炭、乌冈炭、白炭、备长炭中的一种或几种，所述第二碳棒（5）的炭元素含量不小于80%。
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CN113876025A (zh) * 2021-10-25 2022-01-04 湖北中烟工业有限责任公司 一种碳棒加热不燃烧烟草制品
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