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Author

Qi Zhao

Bio: Qi Zhao is an academic researcher from Wuhan University of Technology. The author has contributed to research in topics: Combustion & Coal dust. The author has an hindex of 8, co-authored 25 publications receiving 171 citations.

Papers
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Journal ArticleDOI
01 Feb 2018-Fuel
TL;DR: In this article, the effects of water vapor addition on the low-concentration coal mine methane combustion in porous media were investigated, and a 2D numerical model based on a two-section ceramic foam burner setup with high flame stability was established and multi-step kinetics mechanisms were imported to the model.

46 citations

Journal ArticleDOI
TL;DR: In this paper, a vertical pipeline was built to study the explosion of wheat dust with different particle size distribution under the addition of (NH4)2HPO4, and the characteristics of the wheat dust explosion were recorded by high-speed photography, ion probe and micro-thermocouple.

44 citations

Journal ArticleDOI
TL;DR: It is confirmed that APP can delay peak temperature arrival time, weaken temperature fluctuation, and decrease peak values of flame temperature and temperature rising rate, which provides a new solution for prevention and suppression deflagration of dust waste in sugar industry.

40 citations

Journal ArticleDOI
01 May 2021-Fuel
TL;DR: In this article, the authors investigated the flame propagation of coal dust deflagration and the inhibition characteristics of coal ash which as a mixed inert powder under the atmosphere of methane, and built a vertical combustion pipe with half-open.

37 citations

Journal ArticleDOI
15 Aug 2021-Fuel
TL;DR: In this article, a vertical combustion pipe was built to conduct the deflagration experiment of coal dust/ABC powder, and the chemical bonds and surface functional groups of the residue were characterized.

37 citations


Cited by
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01 Jan 2008
TL;DR: In this paper, a model is developed to quantify the effect of particle size on dust reactivity in an explosion phenomenon, taking into account all of the steps involved in a dust explosion: internal and external heating, devolatilization reaction and volatiles combustion.
Abstract: The recent concept of inherent safety uses the properties of a material or process to eliminate or reduce the risk thus removing or minimizing the hazard at the source as opposed to accept the hazard and looking to mitigate the effects. In this framework the control of particle size in dust explosion prevention and mitigation is recognized as a major inherent safety methodology. Indeed, the increase of particle size may allow significant reduction of particle reaction rate eventually reducing the risk. In this paper a novel model is developed to quantify the effect of particle size on dust reactivity in an explosion phenomenon. The model takes into account all of the steps involved in a dust explosion: internal and external heating, devolatilization reaction and volatiles combustion. Varying the dust size can establish different regimes depending on the values of the characteristic time of each step and of several dimensionless numbers (Damkohler number, Da; Biot number, Bi; thermal Thiele number, Th). Results from the model are reported in terms of the deflagration index (KSt) as a function of dust diameter in all regimes and at varying Da, Th and Bi. Comparison with experimental data from polyethylene explosion tests shows promising results. Finally, the results of the model are presented in the form of a dust explosion regime diagram, which is helpful to make a draft evaluation of the role of dust size on explosion behavior and severity.

116 citations

Journal ArticleDOI
TL;DR: Results indicate that the GO-BA paper prepared has a broad prospect in the field of fire early-alarm, and improved thermal-oxidative stability is obtained forGO-BA.

81 citations

Journal ArticleDOI
15 Mar 2020-Fuel
TL;DR: In this article, the influence of pulsating hydraulic fracturing on the variation of coal pore structure was quantitatively analyzed by quantitatively analyzing the changes of coal porosity and pore size distribution under the action of pulse wave.

74 citations

Journal ArticleDOI
TL;DR: In this article, the chemical characteristics of treated coal samples were analyzed, including proximate analysis, functional groups, mineral components and microcrystalline structures, and the results showed that acidification synergism of SDS reduces the ash content in the coal, and significantly increases the volatile component, fixed carbon content and low calorific value.

74 citations

Journal ArticleDOI
15 Jul 2020-Fuel
TL;DR: In this article, the effect of ionic liquid concentration on the molecular structure of lignite coal was analyzed using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) experiments.

71 citations