Fast drying of cut tobacco in drop tube reactor and its effect on petroleum ether tobacco extracts

Li, Bin; Zhu, Wenkui; Wang, Pengfei; Lu, Duanfeng; Wang, Le; Wang, Bing

doi:10.1080/07373937.2017.1402022

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…Te temperature and moisture evolution of cut tobacco at diferent air temperature combinations were in good agreement with simulation results by the model [8]. Li et al reported that the drying temperature increase can result in decrease of the petroleum ether tobacco extract [9]. In Wang et al's research on the infuence of tobacco drying on the subsequent pyrolysis and combustion characteristics, the results showed that low-temperature drying (at 70 and 110 °C) had little efect on the pyrolysis and combustion properties, but high-temperature drying (at 150 and 170 °C) led to a considerable reduction of sugar while producing new components that are harder to decompose [10].…”

Section: Introductionsupporting

confidence: 83%

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Study on Cut Tobacco Drying Process Based on HS-GC/MS: Principal Component Analysis, Similarity Analysis, Drying Conditions, and Drying Mechanism

Wang

Zhang

Sun

et al. 2023

Journal of Chemistry

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In order to study the volatile and semivolatile components changes of cut tobacco in the drying process, the cut tobacco were determined by headspace-gas chromatography/mass spectrometry (HS-GC/MS). Principal component analysis (PCA) and similarity analysis were used to analyze the HS-GC/MS results. Based on the similarity, the drying conditions and drying mechanism have been studied. The results showed that the increase in water content would reduce the dying rate, and if the temperature increased, the dying rate increased. The preliminary study on the drying kinetics of the drying process shows that Henderson and Pabis model appeared to be the most suitable for describing the drying process of cut tobacco, and the drying activation energy is 111.9 kJ.

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Section: Introductionsupporting

confidence: 83%

“…Tere are many studies reported on the physical and chemical changes during the tobacco drying process [7][8][9][10][11][12]. Zhu has studied the two-stage drying of cut tobacco [7,8].…”

Section: Introductionmentioning

confidence: 99%

Study on Cut Tobacco Drying Process Based on HS-GC/MS: Principal Component Analysis, Similarity Analysis, Drying Conditions, and Drying Mechanism

Wang

Zhang

Sun

et al. 2023

Journal of Chemistry

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“…Drying as a process of removing moisture has been widely used in different kinds of biomass treatments, such as with biofuels (1), fruits and vegetables (2), milk (3)(4), tea (5) and tobacco (6). Distinct dryers were developed and applied for biomass-drying based on a variety of treatment purposes.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Heat and Mass Transfer of Cut Tobacco in a Batch Rotary Dryer by Multi-Objective Optimization

Huang

Deng

et al. 2020

Contributions to Tobacco &Amp; Nicotine Research

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Summary To simulate the drying process of cut tobacco in a batch rotary dryer, six different models of equilibrium moisture content were selected to calculate the driving force of mass transfer, and a mathematical model of heat and mass transfer was numerically solved. The multi-objective nonlinear problem of heat and mass transfer coefficients was optimized by employing a weight factor. The simulation results showed that the weight factor r was an important parameter for fitting results of moisture content and temperature. The model evaluation indices almost reached their minimal values with r at 0.1. For all the six equilibrium/classic models the fit was better for moisture content than for temperature. One model (M-Hen/C) was superior to other equilibrium/classic models and the REA (reaction engineering approach) model. This study aims for an understanding of heat and mass transfer in the tobacco drying process, and provides a theoretical framework to support the prediction of temperature and moisture in various drying situations.

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“…Flexible fibrous particles are a special type of particles that have extensive applications in the industries, including energy, food, chemical, and environmental fields . In particular, these particles, like biomass fuels, tea leaves, and tobacco stems, are easily bundled and aggregated together due to their structural characteristics of nonuniform shape. − Unlike other types of particles, the flexible fibrous particles can be easily associated with higher-order structures with little quantitative changes and formed as clusters. However, these clusters are generally hard to be disappeared during the industrial process. − These relevant processes like transportation and drying are found to be strongly dependent on their structural properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Drying Characteristics of Flexible Fibrous Biomass Fuels in the Baffled-Rotary Cylinder

Yao

Pan

et al. 2019

Energy Fuels

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Drying was significant and challenging for wet nonspherical biomass fuels in the pretreatment process. In the study, a series of researches were conducted to determine the drying characteristics of flexible fibrous biomass particles. Cutrolled stems were taken as experimental materials due to their spreading application and structural features. Here, heat-and mass-transfer characteristics for flexible fibrous biomass particles were investigated under various drum temperatures, gas temperatures, velocities of gas flow, and rotational speeds. Moreover, the moisture content, temperature, and moisture loss rate of flexible fibrous biomass particles were calculated. The experimental results demonstrated that the drying capacity of biomass particles was counted through the temperature difference between the particles and the atmosphere. Thus, the high temperature of particles could reduce their drying capacity. Furthermore, the temperature and moisture content of the particles were greatly affected by the cylinder temperature and gas flow. The heat and mass transfer between the particles and the gas phases would be enhanced by large gas flow velocity, especially for mass convection. The exiting heat and mass characteristics of flexible fibrous biomass particles could provide valuable guidance to make further studies on other wet fuels with nonspherical structure.

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Fast drying of cut tobacco in drop tube reactor and its effect on petroleum ether tobacco extracts

Cited by 9 publications

References 16 publications

Study on Cut Tobacco Drying Process Based on HS-GC/MS: Principal Component Analysis, Similarity Analysis, Drying Conditions, and Drying Mechanism

Study on Cut Tobacco Drying Process Based on HS-GC/MS: Principal Component Analysis, Similarity Analysis, Drying Conditions, and Drying Mechanism

Simulation of Heat and Mass Transfer of Cut Tobacco in a Batch Rotary Dryer by Multi-Objective Optimization

Experimental Research on the Drying Characteristics of Flexible Fibrous Biomass Fuels in the Baffled-Rotary Cylinder

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