The present invention concerns a method for preparing a CO2-rich gas
stream for injection purposes or deposition, and a hydrogen rich gas stream, the
method comprising the following steps: a) natural gas and H2O are fed
into a one-step reforming process for preparing a gas mixture comprising CO2
and H2 under supercritical condition for water from about 400
C. to about 600 C. and pressure from about 200 to about 500 bar in the reforming
reactor; b) the gas mixture from a) is separated into a H2-rich and
CO2-rich gas stream, respectively. The invention also comprises use
of CO2-rich gas stream for injection into marine formations, and use
of H2-rich stream for hydrogenation, as a source of energy/fuel in fuel
cells and for production or electricity.
