TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Conditions: NG stream has pressure of 1-20 bars, preferably 1-12 bars. FS is heated to 1000-1800 K. FS and NG are maintained at 1000 K for less than 100 milli seconds, preferably 80 milli seconds. The temperature in the catalytic liquefaction reactor is 300-1000 K.Preferred catalyst: The catalyst in the catalytic liquefaction reactor is an acid catalyst.Preferred Method: The burn stream and hydrogen are burned using oxygen-enriched air. The method further involves conveying the hydrogen to a fuel cell or turbine, providing oxygen to the fuel cell or turbine, and reacting H with oxygen in fuel cell or burning H with oxygen in the turbine to produce electricity. The fuel cell or turbine produces heat. The method further involves heating water produced in fuel cell or turbine with heat produced in fuel cell to form steam and generating electricity from the steam. Quenching is performed by Joule-Thompson expander, nozzle or turbo expander. RP and H are further conveyed to hydrogenation reactor and the acetylene portion of RP is reacted with H to form ethylene, prior to separating reactive products and after conveying the hydrocarbon liquid (comprising naphtha or gasoline) storage or transport. H is separated from hydrocarbon liquid, oxygen is provided to the cell or turbine, and H is reacted with oxygen in fuel cell or H is burnt with oxygen in turbine to produce electricity. A portion of feed stream is segregated to form an electrical generation stream, stream is conveyed to a fuel cell or turbine, oxygen is provided to fuel cell or turbine, and electrical generation stream is reacted with oxygen in fuel cell or burnt with oxygen in turbine to form electricity. NG is conveyed to a reactor having heater using electrical power. The quenched reactive products and hydrogen are conveyed to a hydrogenation reactor. The acetylene portion of reactive product is reacted with hydrogen to form ethylene. The reactive product is conveyed to a catalytic liquefication reactor to form hydrogen and hydrocarbon liquid. Hydrogen is conveyed to an electrical power generator and for producing water. The electrical power is supplied to the reactor for heating. Naphtha or gasoline and water produced during reaction are conveyed to storage or transport. The heater which heats NG is electric arc, resistance heating plasma reactor, fuel cell, or a combined cycle gas turbine drive electrical generator (50). .