Process and apparatus for the heating of chip drying plants with coal dust, especially for wood chips

The invention relates to a process and an apparatus for the direct heating of drying plants using native solid fuels. The aim of the invention is to replace high value liquid or gaseous energy carriers with solid energy carriers based on lignite and/or coal, and thus to improve the energy and material economy. The essence of the invention consists in that solid fuels, preferably combustible dust, based on lignite and/or coal is used for the direct heating of driers, and the specific use of material is reduced. The invention is of use in the area of the wood-processing industry, especially for drying during the production of chipboard.