Largest Blast Furnace Gas Combined-Cycle Power Plant Put into Official Operation in Angang

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Researched by Industrial Info Resources (Sugar Land, Texas). A 300-megawatt (MW) combined-cycle power plant (CCPP) was put into official operation successfully at Anshan Iron and Steel Corporation (Angang) (Liaoning, China) recently. The opening ceremony for the CCPP project was held at Angang in Northeast China’s Liaoning Province on July 19, 2007.

As an auxiliary project of the West Sheet Steel Mill of Angang, the CCPP project is the first to use waste gas from a blast furnace in China and also the most advanced and the largest unit of its kind in single capacity in the world at the present time. The main component of the project is one 300 MW gas-steam combined-cycle generating unit imported from Mitsubishi Heavy Industry (Japan), with the waste gas from the blast furnace as the main fuel for power generation. Construction of the project began on October 27, 2004. The project was synchronized to the grid successfully on October 25, 2006. Various construction and commissioning items of the project were successfully performed in May 2007. The unit passed the 168-hour continuous full load trial operation and the safety acceptance of the Northeast Bureau of the State Electricity Regulatory Commission of China (SERC) later on.

The project is categorized as a green environment protection project, which will not only alleviate pollution by realizing a zero discharge of gas from the blast furnace, but also gain a large quantity of power by using the waste gas from blast furnace for power generation. The unit could consume about 3.3 billion cubic meters of standard gas from blast furnace with an annual power output of more than 2 billion kWh. Compared with routine coal-fired power plants, the project could save about 700,000 metric tons of standard coal, reduce the emission of 1.9 million metric tons CO2 as well as one billion cubic meters of CO every year. The generated power could improve the power self-supply rate in the metallurgic workshop by 24%.

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