Efficiency of high energy impact in synthesis of coal-water suspensions

Кашкина, Л. В.; Stebeleva, Olesya P.; Petrakovskaya, É. A.; Cherepakhin, A. V.

doi:10.1016/j.matpr.2018.08.024

Cited by 1 publication

(2 citation statements)

References 6 publications

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“…According to the data presented in Figure 5, the highest value of the ignition delay time τ i of the samples is observed at T g = 600°C. The average ignition delay time for the CWF single droplets is reduced by 3.3 times with the increase in temperature of the heating medium (from 600 to 1000°C) and is characterized by an exponential dependence that is consistent with the results of other authors 38 …”

Section: Resultssupporting

confidence: 90%

“…According to the data presented in Figure 5, the highest value of the ignition delay time τ i of the samples is observed at T g = 600 C. The average ignition delay time for the CWF single droplets is reduced by 3.3 times with the increase in temperature of the heating medium (from 600 to 1000 C) and is characterized by an exponential dependence that is consistent with the results of other authors. 38 There is the significant decrease of τ i (on average by 25%) at all considered temperatures of the heating medium when replacing the liquid component of the CWF with the pyrolysis water. The change in the CWF reactivity after adding the pyrolysis water is associated with light hydrocarbons in its composition.…”

Section: Cwf Single Droplets: Ignition and Combustionmentioning

confidence: 89%

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Energy recycling of pyrolysis water as a part of coal‐water fuel

Ларионов

Gvozdyakov

Zenkov

et al. 2021

Intl J of Energy Research

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Under research, there is a combustion process of multicomponent coal-water fuel (CWF) that was conducted with mixing ratio of coal, pyrolysis, and technical water. The pyrolysis water was extracted through pyrolysis oil settling, where the oil was obtained from pyrolysis of wood waste. Ignition and combustion of CWF samples were carried out in a combustion chamber at heating medium temperatures (T g = 600-1000 C, with an interim step of 50 C). Gas-phase combustion products were analyzed with a flow-line gas analyzer. Technical water in CWF composition was replaced with pyrolysis one that was acted to raise the reactive capacity. It resulted in reducing the ignition delay time τ i (by an average of 25%) and the minimum ignition temperature T min i (from 440 С to 393 С, reliance on a CWF composition). In addition, increase in flame combustion time was recorded by an average of 20%, as well as dependence on a heating medium temperature and a CWF composition. In the case when a CWF liquid-phase component was completely replaced with the pyrolysis water, the significant increase in heat value by 2.14 MJ/kg was observed. According to the data of the flow-line gas analyzer, we concluded that the CWF combustion based on the pyrolysis water was accompanied by less NO x emission (by an average of 22%) but more CO and CO 2 amount (by an average of 1.4 and 1.2, respectively). It was found according to the results of the energy balance assessment that application of pyrolysis water in CWF composition leads to a decrease in fuel consumption for heat production by 16.7%.

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Section: Resultssupporting

confidence: 90%

Section: Cwf Single Droplets: Ignition and Combustionmentioning

confidence: 89%