Air blowing dehumidifying and heating steam boiler system with deaerator

Abstract

The invention relates to an air blowing dehumidifying and heating steam boiler system with a deaerator; after passing through an air filter, natural air enters a surface cooler and a demister, then is sent to an air heater and an air preheater through the air blower and finally enters a boiler; a steam exhaust outlet of the deaerator is connected with a steam inlet of a lithium bromide refrigerating machine; a steam condensate water outlet of the lithium bromide refrigerating machine is connected into a desalting water tank; a chilled water outlet of the lithium bromide refrigerating machine is connected with a surface cooler and a water inlet of a cooler of the demister; the surface cooler and a water outlet of the cooler of the demister are connected with a chilled water inlet of the lithium bromide refrigerating machine; a cooling water outlet of the lithium bromide refrigerating machine is connected with a heater water inlet of the air heater; and a heater water outlet of the air heater is connected with a water supply pipe of a cooling tower; and a water drainage pipe of the cooling tower is connected with the cooling water inlet of the lithium bromide refrigerating machine. The system has the advantages of being capable of reducing the power consumption of an air blower, reducing heat loss of discharge smoke, using oxygen removal steam exhaust and increasing heat efficiency of the system.

Description

technical field [0001] The invention relates to a thermal system, in particular to a blast dehumidification heating steam boiler system with a deaerator. Background technique [0002] In boiler and steam systems, O 2 and CO 2 The presence of the metal will corrode the oxide salt scale, and the deposition of non-condensable gas and oxide salt scale will deteriorate the heat transfer effect. Therefore, removing oxygen and other non-condensable gases dissolved in boiler make-up water as much as possible is the basic method to protect thermal system equipment from corrosion, and it is also an indispensable means to ensure the safe and efficient operation of thermal equipment. The thermal deaerator is one of the commonly used equipment. Its main principle is to use steam to instantly heat the boiler water supply to the saturation temperature corresponding to the working pressure of the deaerator head according to Henry's law and Dalton's law, so that the steam in the deaerator ...

AI Technical Summary

Problems solved by technology

When the fuel is burned in the boiler, it needs to consume a lot of oxygen, and the blower blows air into the boiler. When the blower sends oxygen, it also sends water vapor that does not participate in the combustion into the boiler. The water vapor absorbs heat and becomes high-temperature flue gas. In addition, due to the existence of water vapor, the blower needs to send more air to meet the needs of combustion, which not only increases the power consumption, but also increases the heat loss of exhaust smoke

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