Method of generating steam in a forced-through-flow boiler
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United States of America Patent
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-
Dec 31, 1996
Grant Date -
N/A
app pub date -
Dec 20, 1994
filing date -
Feb 9, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for generating steam in a forced-through-flow boiler. During operation, water is conveyed through a preheater, an evaporator and, if needed, a superheater. For such a boiler operated with waste heat, the evaporator is divided into at least two sections, a first one of which is supplied with water at the beginning of a start-up phase and is included in a water circulation, while a second one of the evaporator sections, starting from a dry state, is gradually supplied with water in a controlled manner until, in an operating state, water successively flows through both of the evaporator sections. During the start-up phase, and if desired in low load states, a water-steam mixture is conveyed to a separation tank, from which steam is withdrawn and separated feed water is supplied to the preheater.
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