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Home News Power Sector News Centre grants additional Rs 300 Crore for IGCC Vijaywada plant

Centre grants additional Rs 300 Crore for IGCC Vijaywada plant

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Principal Scientific Advisor to the Union Cabinet R. Chidambaram and Union Minister of State for Power Jairam Ramesh at the thermal power stationCentral Government has approved a special grant of Rs 300 crore for the nation's first Integrated Gasification Combined Cycle (IGCC) plant with 182 MW capacity being set up at Vijaywada. "The clean coal technology can significantly reduce green house gases in thermal power plants. Considering its uniqueness Prime Minister has approved Rs 300 crore for the project," Minister of State for Power Jairam Ramesh said in Hyderabad on 15-11-2008.

The Rs 950-crore project is scheduled to be commissioned by October 2011, the minister said, adding, foundation has been laid for the plant. The Bharat Heavy Electricals Limited (BHEL) and Andhra Pradesh Power Generation Corporation Limited (APGENCO) jointly invested in this Rs 950 crore plant. In this joint venture, APGENCO’s share is Rs 530 crores and the rest has been invested by BHEL.

Though this IGCC technology is presently used in low ash coal in many advanced countries, using it in high ash coal has happened for the first time in the world in this plant. In a world where oil is not abundant, this could be among the alternative energy strategies.

Technology:

Integrated Gasification Combined Cycle (IGCC) is rapidly emerging as one of the most promising technologies in power generation that utilizes low-quality solid and liquid fuels and is able to meet the most stringent emissions requirements.

An Integrated Gasification Combined Cycle, or IGCC, is a technology that turns coal into gas - synthesis gas . It then removes impurities from the coal gas before it is combusted. This results in lower emissions of sulfur dioxide, particulates and mercury. It also results in improved efficiency compared to conventional pulverized coal. Both because coal can be found in abundance in America and many other countries and because the price of coal has remained relatively constant in recent years, it is used for about 50 percent of U.S. electricity needs.

IGCC systems are extremely clean, and are much more efficient than traditional coal-fired systems. IGCC uses a combined cycle format with a gas turbine driven by the combusted syngas from the gasifier, while the exhaust gases are heat exchanged with water/steam to generate superheated steam to drive a steam turbine.

Using IGCC, typically 60-70% of the power comes from the gas turbine with IGCC, compared with about 20% using PFBC. The result is an integrated gasification combined-cycle configuration that provides ultra-low pollution levels and high system efficiencies. 

The main problem for IGCC is its extremely high capital cost.
 

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