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1. (WO2018083082) SYSTEM AND METHOD FOR PROVIDING SUPERCRITICAL STEAM

Pub. No.:    WO/2018/083082    International Application No.:    PCT/EP2017/077866
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Wed Nov 01 00:59:59 CET 2017
IPC: F01K 23/10
F22B 1/18
F22B 33/00
Applicants: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventors: ZHANG, Wei
LEVASSEUR, Armand
NIASS, Tidjani
YOUNES, Mourad
JUKKOLA, Glen
WILHELM, Bruce
PHILO, Daryl
MAIDENFORD, Timothy
Title: SYSTEM AND METHOD FOR PROVIDING SUPERCRITICAL STEAM
Abstract:
A system for providing supercritical steam including a first boiler (12) that generates steam via combusting a first fuel (52), and a second boiler (14) fluidly connected to the first boiler via a conduit (28) which heats the generated steam to supercritical steam temperatures via combusting a second fuel (60), wherein the term "supercritical steam" designates steam which is above a critical temperature with respect to corrosion. A first temperature of the conduit may be below a critical corrosion temperature and a second temperature of the conduit is greater than or equal to the critical corrosion temperature. A combined carbon emission rate of the first boiler and the second boiler may be less than a combined carbon emission rate of generating and heating the steam to supercritical steam temperatures using boilers that only combust the first fuel. The first boiler may be fluidly connected to a heat exchanger that heats the generated steam to a supercritical steam temperature via a flue gas produced by a gas turbine. (Figure 1)