Method for recovering dead steam of thermal-power deaerator

Abstract

The invention discloses a method for recovering the dead steam of a thermal-power deaerator and belongs to the technical field of thermal power. In the method, a thermal-power deaerator and a condenser are utilized, wherein the storage water tank of the deaerator is provided with a heated steam inlet, an auxiliary heated steam inlet, a condensated water inlet, a deoxygenated water outlet and a first safety valve; the deoxidization head of the deaerator is provided with a supplemental water inlet, an exhaust valve and a second safety valve; the condenser is provided with a discharging and overflowing hole for non-condensable gas, such as oxygen and the like, a dead steam inlet, a condensated water outlet, a water inlet and a water outlet; the water outlet of the condenser is connected with the supplemental water inlet of the deoxidization head; the condensated water outlet of the condenser is connected with the condensated water inlet of the storage water tank; the outlet of a dead steam blow-down valve is connected with the dead steam inlet of the condenser; and the condensated water outlet of the condenser is positioned above the condensated water inlet of the storage water tank. According to the method disclosed by the invention, steam and heat in the dead steam can be recovered. Less equipment is required, the method has simple technology and is stable to operate, and the dead steam and the condensated water can be recycled without any additional power.

Description

technical field [0001] The invention belongs to the technical field of heat energy, and in particular relates to a method for recovering exhaust steam applied to boiler feedwater thermal deaerators. Background technique [0002] Existing thermal deaerators remove oxygen through thermal deaerators. The thermal deaerator includes a deaerator head and a water storage tank. The water storage tank is provided with a heating steam inlet, an auxiliary heating steam inlet and a deaeration water outlet. The deaeration head is provided with a make-up water inlet and a exhaust valve. When in use, the make-up water is heated by the heated steam in the oxygen removal head, and as the temperature of the make-up water rises, the dissolved oxygen and other non-condensable gases escape from the water, together with the steam, in the form of exhausted steam, Drain together through the exhaust valve. Exhausted steam includes oxygen, other non-condensable gases and water vapor, of which water...

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Problems solved by technology

[0003] However, some current exhaust steam recovery methods require a lot of equipment, complex processes, unstable operation, and additional power to realize the recovery and utilization of condensed water, which increases power costs, is very inconvenient to use, and is not easy to promote and popularize.

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