Gas turbine system burning heavy-oil modified fuel and method of operating same

A gas turbine system burning heavy-oil modified fuel, said system comprising:

• a reactor for mixing heavy oil and water to cause reaction, thereby separating and removing a heavy component from the heavy oil;
• a gas-liquid separator for separating a light component obtained in said reactor into hydrocarbon gas and modified oil;
• a line for supplying the hydrocarbon gas separated by said gas-liquid separator to a gas turbine combustor;
• said gas turbine combustor for burning the hydrocarbon gas supplied through said line;
• and
• a gas turbine driven by combustion gas produced in said gas turbine combustor,
• wherein said system further comprises:
• another line for extracting the hydrocarbon gas externally of a relevant system region, the other line being branched from an intermediate point of said line for supplying the hydrocarbon gas separated by said gas-liquid separator to said gas turbine combustor;
• and
• a modified oil tank for storing the modified oil separated by said gas-liquid separator, the modified oil stored in said modified oil tank being used as gas turbine fuel at startup of said gas turbine during a period until the light component is produced in said reactor.

A method of operating a gas turbine system burning heavy-oil modified fuel, said method comprising the steps of:

• mixing heavy oil and water in a reactor to cause reaction, thereby producing a heavy component and a light component;
• separating the light component per phase of gas and liquid into hydrocarbon gas and modified oil;
• and
• operating a gas turbine by using the separated hydrocarbon gas as fuel,
• wherein said method further comprises the steps of stopping supply of the hydrocarbon gas as fuel to said gas turbine at the time of stop of the operation of said gas turbine and extracting the hydrocarbon gas supplied from said reactor externally of a relevant system region .