Publication detail

Conditions and characteristics of droplets breakup for industrial waste-derived fuel suspensions ignited in high-temperature air

GLUSHKOV, D.O. FEOKTISTOV, D.V. KUZNETSOV, G.V. BATISCHEVA, K.A. KŮDELOVÁ, T. PAUSHKINA, K.K

Original Title

Conditions and characteristics of droplets breakup for industrial waste-derived fuel suspensions ignited in high-temperature air

Type

journal article in Web of Science

Language

English

Original Abstract

This research is focused on the ignition and combustion mechanisms and characteristics of single droplets of seven different composite liquid fuels, based on wet coal processing waste (fine coal + 50 wt% of water) with 40 wt% of vegetable oils (castor, rapeseed) and used petroleum-based oils (lubricants - motor, compressor, and turbine oils; working fluid - hydraulic oil; insulating fluid - transformer oil). The combustion of waste-derived fuel suspensions is initiated by introducing single droplets into heated motionless air with a temperature of 700-1,000 degrees C. Threshold conditions (component composition, concentration of combustible liquid, and temperature) were detected, for which micro-explosions during the induction period resulted in the full breakup of droplets, combustion of products (vapors and fine particles) and their subsequent rapid burnout. A high-speed video recording system is used to establish consistent patterns of physical and chemical processes, as well as ignition and combustion characteristics (ignition delay times, burnout time, velocity of breakup products, and size of their burnout area) for a group of fuels under the conditions of droplet breakup. A hypothesis about how the composition of the component affects the breakup of droplets during ignition was formulated based on the results of analyzing the properties (initial boiling point and evaporation rates of oils, their surface tension and surface free energy, as well as wettability of dry coal processing waste) of separate fuel components.

Keywords

Waste; Fuel composition; Fuel droplets; Micro-explosion; Breakup; Combustion enhancement

Authors

GLUSHKOV, D.O.; FEOKTISTOV, D.V.; KUZNETSOV, G.V.; BATISCHEVA, K.A.; KŮDELOVÁ, T.; PAUSHKINA, K.K

Released

1. 4. 2020

Publisher

ELSEVIER SCI LTD

Location

Oxford

ISBN

0016-2361

Periodical

FUEL

Year of study

265

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

13

Pages count

13

URL

https://www.sciencedirect.com/science/article/pii/S0016236119323087?via%3Dihub

BibTex

@article{BUT162739,
  author="GLUSHKOV, D.O. and FEOKTISTOV, D.V. and KUZNETSOV, G.V. and BATISCHEVA, K.A. and KŮDELOVÁ, T. and PAUSHKINA, K.K",
  title="Conditions and characteristics of droplets breakup for industrial waste-derived fuel suspensions ignited in high-temperature air",
  journal="FUEL",
  year="2020",
  volume="265",
  number="1",
  pages="1--13",
  doi="10.1016/j.fuel.2019.116915",
  issn="0016-2361",
  url="https://www.sciencedirect.com/science/article/pii/S0016236119323087?via%3Dihub"
}