BOILER DRAIN RECOVERING DEVICE

• Main Authors: HORI SHIGEKAZU, IGAUE KATSUHIKO
• Format: Patent
• Language: English
• Published: 16.08.1989
• Subjects: AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS; BLASTING; CONTROLLING WATER LEVEL; FEED-WATER SUPPLY; HEATING; LIGHTING; MECHANICAL ENGINEERING; PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; STEAM GENERATION; WEAPONS

PURPOSE:To recover the heat of boiler drain and to reduce the feed of supply water, by providing a stream recovery system to recover steam, generated by gas water separation by means of a blow tank, and drain recovery system to recover drain, produced by gas water separation, by means of the drum of a boiler device. CONSTITUTION:The bottom of a blow tank 2 in which boiler drain 1 is intro duced is connected to a drum 6 through a drain recovery system 3 in which a drain recovery pump 4 is located. The top side of the blow tank 2 is con nected to a deaerator 7 through a steam deaerator recovery system 5 in which a pressure escape valve 9 is located. In the blow tank 2, gas water separation is made on the boiler drain, and drain is temporarily stored in the blow tank 2. During normal operation, the boiler drain is boosted with the aid of a drum recovery pump 4 and is recovered by the drum 6 through the drain recovery system 4, and is recovered by the deaerator 7 through the steam deaerator recovery system 5. This constitution enables recovery of boiler drain discharged to the outside of a system during the daily starting of a boiler, and permits recovery of the heat of drain simultaneously with reduction of auxiliary feed water.