Abstract: The paper summarises the development and optimisation of a valveless pulse combus-tor designed as a heating source for drying in disperse systems. The basic research dealt with changing of the pulse combustor geometry, e. g. the volume of a combustion chamber and tail pipe length to obtain smooth trajectory of pressure oscillations and low emission of toxic substances. The pulse combustion mechanism and existing designs of pulse combustors applied in drying have been presented and analysed. Examples of specific applications of this technique are delivered.