NLC to adopt new technology in power generation

Special Correspondent

CUDDALORE: The Neyveli Lignite Corporation (NLC) will adopt a new technology, CFBC (circulating fluidised bed combustion), for power generation for reducing emission level further.

The NLC has proposed to introduce this technology in its capacity expansion (250 MW) at Neyveli and the Rajasthan power project, said S. Jayaraman, chairman-cum-managing director.

He was addressing the workshop on `Recent developments in pollution control of thermal power stations' at Neyveli near here on Saturday.

Mr Jayaraman said the country's dependence on fossil fuel might continue for 100 years. To meet the rising demand for power, it would have to go for capacity augmentation which in turn would increase pollution levels.

This would pose a challenge to engineers and technicians on the means to tackle environmental degradation. The NLC units were functioning within the environmental norms owing to improved efficiency parameters, he said.

He stressed the need to combat pollution, constant upgrading of technology. Another problem dogging the thermal power stations was the proportion of ash content in coal.

The Government had imposed restrictions that coal with more than 35 per cent ash content should not be transported beyond 1,000 km.

The NLC, hence, was concentrating on reducing the ash content from 45 to 35 per cent at the pithead itself.

Mr. Jayaraman said the objective of the power sector should be to adopt the best norms, without waiting for the government to come out with the guidelines.

V. Sethuraman, Chief General Manager (Thermal), NLC, said the country was generating 1.10 lakh MW and this would double in the next decade.

Of the existing capacity, thermal power stations held 80,000 MW, followed by hydel power units - 27,000 MW and the remaining gas and diesel-run units.

He said the thermal stations around the country utilised 135 million tonnes of coal annually, causing atmospheric pollution through the emission of carbon dioxide, carbon monoxide, nitrous oxide (nox) and sulphur dioxide (sox). The CFBC technology was suited to check the emissions.

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