Experimental investigation on the self-ignition behaviour of coal dust accumulations in oxy-fuel combustion system

A multi-step reaction scheme to simulate self-heating ignition of coal: Effects of oxygen adsorption and smouldering combustion

“…Rangwala et al [22] who used the same coal as used in the aforementioned TGA experiments [9]. To conduct blind predictions of the present model, the second was another set of hot plate experiments [23] using a different coal (South Africa coal). Figure 3 shows the schematic of an experimental set up, where the thickness of the layer is 12.7mm is given as an example.…”

Computational study on self-heating ignition and smouldering spread of coal layers in flat and wedge hot plate configurations

“…For heterogeneous combustion, 1.1 kg of coal reacts with 2.1 kg of oxygen to generate 3.1 kg of gases and 0.1kg of ash [11,36]. The heat of combustion for Pittsburgh seam coal is -29.8 MJ/kg [7].…”

“…Previous studies have investigated the influence of hot plate temperature [36] and wedge angle [12,13] on the location of the hot spot at the onset of ignition under supercritical condition.…”

Effect of wood biomass components on self-heating

“…Thus, the factors that cause self-heating ignition such as chemical oxidation and microbial activity are necessary to be controlled accurately because the resulting fires cause damage to the energy industry and health. In fact, the objectives of most researches related to selfheating ignition are to prevent the spontaneous ignition of piled materials (Ramírez et al 2010;Wu et al 2015;Ashman et al 2018). Itoh et al (2019) reported a new biochar production method utilizing spontaneous self-heating induced by low-temperature oxidation of biomass.…”