| 摘要 |
A process for the utilization of a fuel having an initial boiling temperature or prevailing initial boiling temperature range at 1 bar of between 231 K and 830 K, characterized by the following features:(a) the fuel is contacted with at least one oxidant preheated to from 520 K to 880 K at a pressure, p, of >=1 bar, or at a lower pressure with a reduction of the temperature range, and a C/O molar ratio of between 1:0.14 and 1:25 in a reaction space to initiate exothermic prereactions in the form of a cool flame which cause only partial conversion of the fuel and oxidant even when the fuel and oxidant are homogeneously mixed; and(b) a kinetic reaction inhibition of the further reaction of the oxidizable mixture formed in the cool flame is provided by adjusting a technically relevant dwelling time tv of the mixture prepared in step (a) in the reaction space of tv>25 ms at p<=1 bar, and dwelling times which become shorter when the pressure is increased under otherwise equal conditions, and a limited heat dissipation from the reaction zone through an inert gas stream with a ratio of the heat capacity flow of the oxidant, {dot over (M.cp, to the product of fuel mass flow, {dot over (Mb, and heating value, Hu, which is, in the adiabatic reaction space, {dot over (M.cp/{dot over (Mb.Hu>2.10<-4>K<-1>, and/or through the reactor wall with a heat flow density, {dot over (q, of {dot over (q<85 KW/M<2>, whereby auto-ignition of the mixture is prevented, especially for a predictable period of time. |
