Steam power plant for generating electric power
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United States of America Patent
Stats
-
Nov 18, 1997
Grant Date -
N/A
app pub date -
Feb 3, 1995
filing date -
May 10, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A steam power plant for generating electric power has a fossil-fuelled boiler, a water-steam cycle for generating high-tension, superheated steam for a steam turbine, an economizer to transmit heat from flue gas to the feed-water, an air preheater to transmit flue gas heat to fresh air and devices for removing dust, sulphur and possibly nitrogen from the flue gases. In order to optimize heat exchange in the air preheater during operation and reduce the heat loses during start-up of the steam power plant, a heat exchanger system is provided with sections through which recirculated air and a heat vehicle medium flow, in which the section carrying the air is connected on the intake side to the fresh-air outlet of the air preheater and on the outlet side to the fresh-air intake of the air preheater.
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