The impact of cavitation-activated water on combustion dynamics and environmental characteristics of coal-water slurry fuel

Among the new coal technologies the burning of low-grade coal in the form of coal-water slurry fuel (CWSF) is of a great interest. The basis of CWSF is a highly concentrated coal-water slurry consisting of finely ground coal, water or other liquid and plasticizing agents. The development of CWSF tec...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-05, Vol.537 (6), p.62056
Main Authors: Stebeleva, O P, Kashkina, L V, Petrakovskaya, E A, Nikitin, S L, Valiullin, T R
Format: Article
Language:English
Subjects:
Angular velocity
Cavitation
Coal
Combustion temperature
Fuels
Resource conservation
Slurries
Supercavitating flow
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Among the new coal technologies the burning of low-grade coal in the form of coal-water slurry fuel (CWSF) is of a great interest. The basis of CWSF is a highly concentrated coal-water slurry consisting of finely ground coal, water or other liquid and plasticizing agents. The development of CWSF technology is highly relevant for solving global problems of resource conservation and ecology. The study is dedicated to CWSF properties with respect to Kansk-Achinsk coal and water. This paper presents the results of the influence of CWSF's preliminary cavitation water treatment on the combustion dynamics of fuel, (including the features of the combustion temperature trends, delayed ignition time and time of complete combustion) and on its environmental characteristics. A rotary-type hydrodynamic oscillator at high angular velocity (10000 rpm) was used in supercavitation mode. It is shown that the technology of cavitation water treatment leads to a change in the dynamics of CWSF's combustion and to an additional decrease in NOx emissions by 1.6 times, CO2 by 1.3 times.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/537/6/062056