Tobacco combustion heat measurement apparatus

Abstract

The present invention discloses a tobacco combustion heat measurement apparatus, which comprises a gas supply device, a combustion device, a filtration device and an analysis device, wherein the combustion device comprises an annular heating furnace and a controller, one quartz pipe end arranged inside the annular heating furnace is a heating end, the other end is a non-heating end, the end is provided with a sealing member, a quartz boat is arranged in the quartz pipe and is pushed by a step motor to move at a uniform speed, the sealing member is provided with two through holes for a gas supply pipeline channel and a step motor transmission channel, the filtration device comprises a high temperature resistance filter directly connected with the gas outlet end of the annular heating furnace, and a second-stage filter communicated with the analysis device, the two stages of the filters are connected through a cooling pipeline, the filtration device is used for filtering particle phase substances and water in the combustion product so as to avoid influence on the analysis device, and the analysis device comprises an oxygen analyser communicated with the second-stage filter through a pipeline. According to the present invention, the accurate measurement of the combustion heat of the tobacco under the stable poor-oxygen combustion state is achieved.

Description

Technical field: [0001] The invention relates to a tobacco combustion heat measuring device, which belongs to the technical field of heat measurement. Background technique: [0002] Cigarette is a special consumer product that relies on burning to reflect its quality. Tobacco combustion heat is one of the important parameters of tobacco combustion characteristics, which is closely related to the sensory quality of tobacco, the formation of aroma components in smoke, the release of harmful substances, and the ignition characteristics of cigarettes. [0003] At present, the measuring devices that can be used for the heat of combustion of materials mainly include cone calorimeter and micro-combustion calorimeter. Both the cone calorimeter and the micro-combustion calorimeter are designed based on the principle of oxygen consumption, which specifically means that when a substance is burned, the oxygen consumed per unit mass will generate basically the same heat, that is, the ox...

AI Technical Summary

Problems solved by technology

The cone calorimeter is used to test the heat release of a specific regular sample under the condition of violent combustion in an open system with sufficient oxygen. Due to the particularity of the physical properties of the tobacco sample, it is difficult to achieve an accurate measurement of the heat of combustion of the tobacco.

When the micro-combustion calorimeter measures the combustion heat release of materials, a very small amount (generally 4-5 mg) of the sample is fully cracked in the cracking furnace, and then the cracked gas is placed in the combustion furnace for combustion, so it reflects the microscopic scale. Pyrolysis and combustion behavior of substances under the influence of low reproducibility

Obviously, neither the cone calorimeter nor the micro-combustion calorimeter can simulate the oxygen-poor combustion environment of cigarettes, and is not suitable for the measurement of tobacco combustion heat

Images