Flammable and burning-resistant carbonaceous heat source and preparation method and application thereof

A carbonaceous heat source and burn-resistant technology, applied in the direction of fuel, solid fuel, biofuel, etc., can solve the problems of not considering the human health hazards of the binder, difficult to ignite quickly, and fast burning rate, so as to reduce health risks, The effect of shortening the time of smoke emission and strong fire resistance

Inactive Publication Date: 2021-02-19
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in actual use, carbon rods may have the following problems: 1) The ignition performance of carbon rods needs to be improved. Some carbon rods have high carbon content and high calorific value, but their ignition performance is not good. It is difficult to ignite as quickly as traditional tobacco products; 2) The fire-holding and burning time of carbon rods need to be enhanced. Although the carbon source selected by some carbon rods is flammable, the burning rate is fast and the suction time is short; 3) The carbon rods There are some harmful substances in the additives. Some carbon rods choose nitrates, chlorates, manganates and even some toxic and harmful transition metal compounds with catalytic effects as additives. These substances may be volatilized or released during the combustion of carbon rods. 4) There are no clear requirements for the carbon source selection and composition method of carbon rods. Some carbon rods use a single carbon source, which cannot meet the requirements of easy ignition and fire resistance at the same time; some carbon rods There are a wide range of carbon sources, and the deployment of carbon sources is not considered. There is no specific selection index and method, as long as it is a carbon-containing powder material; 5) Some carbon rods are made of chemical raw materials for forming binders Such as polyvinyl alcohol, etc., did not consider the human health hazards of these binders; and 6) The smoke performance of carbon heating and non-burning smoke needs to be improved. Poor consumer experience

Method used

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  • Flammable and burning-resistant carbonaceous heat source and preparation method and application thereof
  • Flammable and burning-resistant carbonaceous heat source and preparation method and application thereof
  • Flammable and burning-resistant carbonaceous heat source and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Select a kind of charcoal and bamboo charcoal, crush and grind it, then pass through a 100-mesh sieve, and use an industrial analyzer to analyze its moisture, volatile matter, fixed carbon and ash content (Table 1), the results show that the ash content of fruit charcoal is 3.3 %, the ash content of bamboo charcoal is 2.8%; the elemental analyzer is used to determine that the content of carbon element is higher than 85%, and the content of sulfur and nitrogen is lower than 0.4%; the ash content of the charcoal and bamboo charcoal after combustion is tested by XRF Show that main oxide composition is silicon dioxide, calcium oxide, magnesia, ferric oxide and aluminum oxide (table 2); Adopt automatic calorimeter analysis calorific value to be 28-30MJ / kg; Produced thermal comprehensive analyzer, get its TG ( figure 2 ), DTG curve ( image 3 ), it was found that the burn-out temperatures of the charcoal and bamboo charcoal were 559°C and 724°C, respectively, and the maximu...

Embodiment 2

[0043] Select cotton stalk carbon and semi-coke obtained by pyrolysis at 700°C after washing a kind of coal with high volatile content and low ash content in western my country, crush and grind it finely, and then pass through a 600-mesh sieve, using the carbonaceous charcoal described in Example 1 Material screening methods are tested and judged. According to the test results, both cotton stalk carbon and the semi-coke were selected as flammable carbon.

[0044] The cotton stalk charcoal of 40 parts by weight of 600 orders, the semi-coke of 20 parts by weight of 600 orders, the graphite powder of 15 parts by weight of 600 orders, the water-free glutinous rice glue of 5 parts by weight of 600 orders, and the water of 20 parts by weight in a mixer Mixed and stirred evenly, and aged for 20 minutes, the carbon rod was extruded by a screw extrusion molding machine, the extrusion molding pressure was 8MPa and the temperature was 85°C, and the extruded carbon rod was dried in the air...

Embodiment 3

[0046] Select coconut shell activated carbon and tobacco carbon obtained by pyrolysis of waste from a certain tobacco industry at 600°C, pulverize and grind them finely, then pass through a 400-mesh sieve, and use the carbonaceous material screening method described in Example 1 to test and judge. According to the test results, coconut shell activated carbon was selected as the auxiliary carbon source of the flammable carbon, and tobacco carbon was selected as the flammable carbon.

[0047] Tobacco charcoal of 40 parts by weight of 400 orders, activated carbon of 6 parts by weight of 400 orders, graphite powder of 14 parts by weight of 800 orders, non-water glutinous rice glue of 9.5 parts by weight of 400 orders, kaolin of 0.5 parts by weight of 200 orders, 30 parts by weight of The water was mixed and stirred evenly in the mixer, and aged for 60 minutes. The carbon rod was extruded by a screw extrusion molding machine. The extrusion molding pressure was 3MPa and the temperatu...

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Abstract

The invention discloses a flammable and burning-resistant carbonaceous heat source as well as a preparation method and application thereof. The inflammable and burn-resistant carbonaceous heat sourceaccording to the present invention comprises flammable carbon, flame-retardant carbon and a binder, the flame-retardant carbon comprises graphite, the binder comprises a glutinous rice glue, and the contents of the flammable carbon, the flame-retardant carbon and the binder are 40-75 wt%, 10-45 wt% and 3-15 wt%, respectively, based on the total weight of the flammable and burning-resistant carbonaceous heat source. The preparation method of the flammable and burning-resistant carbonaceous heat source comprises the following steps of: mixing the flammable carbon, the flame-retardant carbon andthe binder according to the content ratio; carrying out extrusion molding on the obtained mixture; and drying the obtained molded material. The flammable and burning-resistant carbonaceous heat sourcecan be used for heat-not-burn cigarette products to meet various requirements of smoking.

Description

technical field [0001] The invention belongs to the field of shaped carbonaceous fuels, and more specifically, the invention generally relates to a flammable and burnable carbonaceous heat source and its preparation method and application. Background technique [0002] New tobacco products will be the third major change in the tobacco industry. At present, new tobacco products can be mainly divided into three categories: electronic cigarettes, heated tobacco products and smokeless tobacco products. The basic principle of heating tobacco products is that there is no need to burn them, but the nicotine and flavor substances in the tobacco are baked by heating the shredded tobacco, so as to meet the needs of smokers. Heated tobacco products mainly include two types of products: electric heating products and fuel heating products. In comparison, the development of electric heating technology is relatively mature, and corresponding products were commercialized relatively early in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCC10L5/447Y02E50/30Y02E50/10A24D1/002A24D1/22C10L2270/08C10L2290/08C10L2290/30
Inventor 罗诚浩李丹黄龙刘豪陈义坤张健王泽安
Owner HUBEI CHINA TOBACCO IND
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