Gaseous fuels (derived gaseous fuels)
The methane reforming process combined with metal oxide reduction was evaluated for the purpose of converting solar high-temperature heat to chemicals below temperatures of 1273 K. The metal oxide was endothermically reacted with methane to produce CO, hydrogen, and the component metal in the temperature range of 1173-1273 K. Of the metal oxide candidates, WOs and VzOs were found to be reactive and selective metal oxides for the purposes of methane reforming. The metallic tungsten produced by methane reforming could be used to split water and to generate hydrogen at a lower temperature of 1073 K. To improve the reactivities of WOs for methane reforming and the subsequent splitting of water, supported tungsten oxides were examined in the temperature range of 1073-1273 K. The reactivities were much improved with ZrOz-supported WOs, giving a methane conversion of 70% and a CO selectivity of 86%. Our findings indicate the possibility that the proposed two-step process using a WOsiW redox system may be a potentially new thermochemical path that produces useful energy carriers of processed metal, syngas, and methanol for storing and transporting solar energy from the sun belt to remote population centres.
Transport, storage 02lOO299 Technical diagnostics of intershop gas-supply pipes for blast furnace and coke gases Garber, K.E. er al. Bezop. Tr. Prom-sri., 2000, 5, 43-44. (In Russian) This paper deals with monitoring of the condition of intershop gassupply pipes for blast furnace and coke oven gases.