SYSTEM AND METHOD FOR HEAT RECOVERY AND STEAM GENERATION IN COMBINED CYCLE SYSTEMS

摘要

A system includes a heat recovery steam generator (HRSG) including a first pressure economizer, a first pressure evaporator that may receive a first portion of a feed water from the first pressure economizer at a first pressure, a re-heat section that may receive the first portion of the feed water from the first pressure economizer as a first steam flow, and a flash system including a first flash vessel that may receive a second portion of the feed water from the first pressure economizer and to generate a first flash steam flow. The system may combine the first flash steam flow with the first steam flow of the feed water at a second pressure less than the first pressure.

主权项

1. A system, comprising:
a heat recovery steam generator (HRSG), comprising:
a first pressure economizer;a first pressure evaporator configured to receive a first portion of a feed water from the first pressure economizer at a first pressure;a re-heat section configured to receive the first portion of the feed water from the first pressure economizer as a first steam flow; and a flash system comprising:
a first flash vessel configured to receive a second portion of the feed water from the first pressure economizer and to generate a first flash steam flow, wherein the system is configured to combine the first flash steam flow with the first steam flow of the feed water at a second pressure less than the first pressure.