Howden’s on-line cleaning package for rotary air preheaters significantly improves availability at Teruel Power Station, Spain. The challenge Teruel Power Station in Spain incorporates three 350MW coal-fired generating units. It has a plentiful local supply of low-grade lignite, which is mixed with imported coal to reduce the sulphur content to around 4 per cent. In the mid 1990s, each boiler was fitted with an FGD plant to reduce emission

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