Process for decentralized biomass-fired combined heat and power plants in the smaller power range

摘要

The invention relates to a method for decentralized biomass-operated cogeneration plants in the smaller power range, which is not dependent on fermentation processes. With decentralized combined heat and power generation, a system concept is available which, in addition to electricity, also supplies heating heat with a high degree of overall efficiency. If the operation with renewable biomass, it comes closer to the goal of keeping the CO portion in the air constant. The provision of heating heat eliminates domestic fire emissions and COneutral charge current is available for future e-mobility. There is more thermal energy in the maize substrate than fermentation can convert biologically into methane. The question of the cultivation of "food or energy" is omitted if the grains of the corn plant and the halm remnants serve both types of use. Dried and pelleted, the residue of the maize results in an odor-neutral, manageable fuel with wood-like calorific value. It is therefore an object of the invention to streamline the corn pellets efficiently in the smaller power range. A specially designed steam-driven, closed, efficient gas turbine process with regeneration can use the hot flue gases energetically through external heat transfer. Steam can be vented to a vacuum, which allows flexible load-related switching between heat extraction or electricity plus condenser cooling.