Cavitation pulse technology for the preparation of fine-particle coal-water fuel


Coal-water fuel is a new, far more environmen-tally appropriate kind of power-plant fuel, which can be used at thermal power plants now in operation in place of gas or black oil.

The essence of the technology

Consists in the use of periodically detached cavitation in the flow of a coal-water slurry for dispersing and homogenizing the slurry to obtain fine-particle coal-water fuel, which can be burned as it is in boiler furnaces.


  • direct burning in boilers without need for preliminary drying or dewatering;
  • far lower power consumption per product unit (by a factor of 4 to 6);
  • no moving parts or automatic control elements in the cavitation pulse disperser, simple plant design;
  • high production capacity;
  • wide range of control of the cumulative effect of cavitation.
Prototype cavitation pulse plant to try out the operating conditions for different coal ranks and slurry concentrates

Operational testing

The technology for the preparation of fine-particle coal-water slurries has been tried out at the Hydraulic Laboratory of the Institute of Technical Mechanics using various coal ranks and slurry concentrates. As a result, a fine-particle coal-water fuel with a coal content of 70% and a particle size of 50 µm has been obtained.

Possible users

Power engineering industry, heat and power plants, public boiler plants.

Cavitation pulse plant for the preparation of fine-particle coal-water fuel

Т – trapping filter; P – pump; М – motor; F – filter

Time history of cavitation pulse disperser operation on coal-water slurry

P1 – disperser inlet pressure; P2 – average coal-water slurry pressure at the disperser outlet; dP2 – coal-water slurry pressure pulsation at the cavitation pulse disperser outlet
Contact information:
Institute of Technical Mechanics of the NASU and SSAU
Ukraine 49005
15 Leshko-Popel St.
Contact person:O. V. Pylypenko
Phone:(056) 372 06 50

The “Technical Mechanics” Journal

Frequency: 4 times a year

Languages: Ukrainian, English

Editor-in-Chief: Oleg V. Pylypenko, Academician of the National Academy of Sciences of Ukraine