METHOD AND DEVICE FOR DEAERATING FEED WATER

PURPOSE:To reduce effectively oxygen dissolved in feed water by effectively warming the feed water to be sent to a daerator with auxiliary steam and evacuating the inside of the deaerator with a deaerator vent system. CONSTITUTION:The lower end part of a feed water communicative pipe 10 for communic...

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Bibliographic Details
Main Authors OSHIMA YOSHIKUNI, NAKAMURA YASUAKI, URA KATSUMI
Format Patent
LanguageEnglish
Published 28.10.1986
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PURPOSE:To reduce effectively oxygen dissolved in feed water by effectively warming the feed water to be sent to a daerator with auxiliary steam and evacuating the inside of the deaerator with a deaerator vent system. CONSTITUTION:The lower end part of a feed water communicative pipe 10 for communicating a deaeration chamber 1 with a water storage tank 12 is led below the water surface in the water storage tank 12, (a) a vent pipe 14 provided with an orifice 14a and a stop valve 15 for the vent pipe and (b) a start-up vent pipe 16 furnished with a stop valve 17 for the vent pipe are arranged in parallel between the deaeration chamber 1 and a condenser and a pipe 18 for supplying heated steam to the deaeration chamber 1 is provided. The feed water deaeration device is used for heating the feed water to a boiler. When the boiler is started, the valve 17 is opened and a part of heated steam is introduced into the water storage tank 12. Consequently, time necessary for deaeration and cleanup at startup can be reduced, the amt. of auxiliary steam is saved and the cost of in-plant boiler equipment can be reduced.
Bibliography:Application Number: JP19850082681