Method for control of steam quality on multipath steam...

F - Mech Eng,Light,Heat,Weapons – 22 – B

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F22B 37/42 (2006.01)

Patent

CA 2641252

The present invention relates to systems and methods for control of a steam generating process having a steam generator (10) with multiple water flow conduits disposed in a convection section (40) and a radiant section (50, 52). A first conduit (20) may have a first diverted convection section water (38) that may flow through a second preheator (44) of a second conduit (22) intermediate a first element (36) of the convection section (40) and a first radiant section (50). The second conduit (22) may have a second diverted convection section water (48) that may flow through a first section preheator (34) intermediate a second element (46) of the convection section (40) and a second radiant section (52). A first temperature controlled valve (39) may control the first diverted convection section water (38) flow rate and a second temperature controlled valve (49) may control the second diverted convection water (48) flow rate.

La présente invention concerne des systèmes et des procédés pour commander un processus de production de vapeur faisant intervenir un générateur de vapeur (10) doté de multiples conduites de circulation d'eau disposées dans une section de convection (40) et une section de radiation (50, 52). Une première conduite (20) peut comprendre une eau de première section de convection déviée (38) qui peut circuler par un second dispositif de préchauffage (44) d'une seconde conduite (22) intermédiaire entre un premier élément (36) de la section de convection (40) et une première section de radiation (50). La seconde conduite (22) peut comprendre une eau de seconde section de convection déviée (48) qui peut circuler par une première section de préchauffage (34) intermédiaire entre un second élément (46) de la section de convection (40) et une seconde section de radiation (52). Un premier clapet à régulation de température (39) peut réguler le débit de l'eau de première section de convection déviée (38), et un second clapet à régulation de température (49) peut réguler le débit de l'eau de seconde section de convection déviée (48).

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