A new $308-million Dept. of Energy stimulus grant will advance a California clean coal full-scale demonstration project. The $2-billion Hydrogen Energy California (HECA) will feature Integrated Gasification Combined Cycle (IGCC) technology in Kern County. HECA will convert coal and petroleum coke (a byproduct of the refining process in the Los Angeles basin) and non-potable water into hydrogen and CO2. A methanol-based process will then separate the CO2 from the hydrogen. The hydrogen will be used to fuel a 390 MW power station. The CO2 will be piped to the Elk Hills Field oil reservoir where it will be injected for
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.