A method for the reserve operation of a power unit equipped with a pulverised coal firing

摘要

The mode is brought about due to the coal dust pulveriser and the coal dust burner switching out of operation in stages. An oil burner simultaneously switches into operation in stages. The burner has an intermittent operation to provide a reduced quantity of steam. The steam can be provided at between 5% and 20% of the normal level, at a temperature between 60% and 100% of normal and a pressure also between 60% and 100%.