Procedure for value a fuel utilization of exothermic previous reactions as a cold flame.

Procedure for value a fuel having a boiling point of departure, or mainly a range of boiling temperatures starting at 1 bar between 231 K and 830 K, in which (a) contacting in a space reaction fuel at a pressure p> 1 bar with at least one preheated oxidant 520 K to 880 K or lower pressure with a reduction of the temperature range, and a molar ratio C / O of the mixture of fuel and oxidant from 1: 0.14 to 1: 25, so that exothermic reactions in pre-form of a cool flame which also originates, with a homogeneous mixture of fuel and oxidant are initiated only a partial reaction of fuel and oxidant, and (b) adjusting a residence time technically relevant tv mixture prepared in step a) into the reaction space, tv> 25 ms at p <1 bar and residence times that are more short to au ment pressure being otherwise identical conditions, and a limited detraction of heat out of the reaction zone, with a ratio between the current with heat capacity of the oxidant into the reaction zone for the product of the mass flow of fuel the calorific value Hu, in the adiabatic reaction space is, and / or through the reactor wall with a density of heat Current Draw <85 kW / m2, a kinetic reaction inhibition occurs, the reaction further the oxidizable mixture originating from the cold flame, whereby autoignition of the same is avoided, especially during a predictable time.