TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The apparatus comprises separate vaporizing beds (i.e. separate water and fuel vaporizing beds) to produce separate vaporized streams, which are subsequently mixed. The apparatus preferably comprises a first vaporizer for producing the vaporized water/gas stream and a second vaporizer for producing the vaporized fuel stream, and a mixer for mixing the separate vaporized water/gas and fuel streams to produce the mixed vapor stream, where each vaporizer comprises a nozzle to produce the liquid-containing stream at high linear velocity, and the vaporizing bed to produce the vaporized stream. The first nozzle and the second nozzle are of small diameters, both having an outlet diameter of less than 2 (preferably 0.2-0.5) mm. The first nozzle size is preferably selected to give a high velocity water stream with a suitably high linear velocity, of 0.5-2 (preferably 1.1-1.2) m/s. The second nozzle has the same diameter or of a different diameter to the first nozzle. The second nozzle size is selected to give a high velocity fuel stream with a suitably high linear velocity, of 0.1-2 (preferably 0.5-1) m/s. The first nozzle outlet is close to the water vaporizing bed relative to the diameter of the nozzle, such as 0-1000% of the diameter of the first nozzle from the water vaporizing bed. The second nozzle outlet is close to the fuel vaporizing bed relative to the diameter of the nozzle, such as 0-1000% of the diameter of the second nozzle from the fuel vaporizing bed.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process comprises: vaporizing liquid water in a first vaporizer by: (i) passing the liquid water stream through the first nozzle at high linear velocity to give the high velocity water stream, and (ii) contacting the high velocity water stream, in the presence of a gas, with the water vaporizing bed to produce a vaporized water/gas stream; separately vaporizing liquid fuel in a second vaporizer by: (i) passing the liquid fuel stream through the second nozzle at high linear velocity to give the high velocity fuel stream, and (ii) contacting the high velocity fuel stream with the fuel vaporizing bed to produce the vaporized fuel stream; and mixing the vaporized water/gas and fuel streams to produce the mixed vapor stream. The gas added to the water stream may be added to the liquid water stream at any suitable point prior to or in the water vaporizing bed, where e.g. the gas may be added to the liquid water stream prior to the first nozzle, producing, from the nozzle, the high velocity liquid water/gas stream. Preferably the gas is added to the high velocity water stream produced after the water stream has passed through the nozzle, e.g. by providing a suitable gas stream in the vicinity of the outlet of the first nozzle, and preferably the gas stream is added to the high velocity water stream prior to contact of the high velocity water stream with the water vaporizing bed. The high velocity water stream and the gas stream may or may not mix significantly, or completely, prior to contact of the streams with the water vaporizing bed. The addition of a gas stream to the liquid water stream aids vaporization. The water vaporizing bed operates at 100-400 (preferably 250-300)degreesC and 0-50 (preferably 1-4) bar. The fuel vaporizing bed operates at 100-500 (preferably 225-275)degreesC and 0-50 (preferably 1-5) bar. Preferred Components: The fuels are composed of paraffins and isoparaffins, naphthenes, aromatics and oxygenates such as alcohols or ethers. The fuel is preferably a hydrocarbon fuel. The gas is preferably a carrier or reactant gas, such as air, oxygen, or an inert gas (e.g. nitrogen). When the high velocity water stream and the high velocity fuel stream are contacted with the same vaporizing bed (water and fuel vaporizing bed), then the gas preferably does not contain oxygen, and is an inert gas, to prevent autoignition of the fuel.