Deaerator pressure control system for a combined cycle steam...

Details Deaerator pressure control system for a combined cycle steam... Deaerator pressure control system for a combined cycle steam...

F - Mech Eng,Light,Heat,Weapons

01

K

60/45, 322/6.4

F01K 23/10 (2006.01) B01D 19/00 (2006.01)

Patent

CA 1218701

22 50,083 ABSTRACT OF THE DISCLOSURE In a combined cycle steam generation power plant, until steam extraction can be used to reheat the deaerator, the economizer and/or the pegging recirculation are con- trolled so as to track the pressure upwards of the autocirculation reheater from the low pressure evaporator with a certain lag in pressure, and to extablish pressure in the deaerator on the decreasing trend of the autocirculation reheater at a slower rate and without lowering below a minimum pressure so as to prevent the occurrence of bubbling and cavitation effect.

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