Waste heat recycling device for boilers in power plants

Abstract

The invention discloses a waste heat recycling device for a boiler of a power plant, which comprises a ferrule, the ferrule is semi-circular, the bottom of the ferrule is provided with a notch, the ferrule is hollow, and the inner portion of the ferrule is hollow. The cavity is divided into left and right cavities by a partition, wherein the left cavity is a gas heating cavity, and the right cavity is a liquid heating cavity; a plurality of heat conducting sheets are evenly arranged in the vertical direction in the gas heating cavity, The two ends of the heat-conducting sheet extend toward the front and rear ends of the ferrule, respectively, and a plurality of heat-conducting sheets for heating gas and heat-dissipating plates for heating liquid are respectively arranged in the gas heating chamber and the liquid heating chamber. During use, the ferrule can be directly clamped to the outer wall of the boiler, and the air and liquid introduced into the gas heating chamber and the liquid heating chamber can be heated by the waste heat of the outer wall of the boiler, and the waste heat can be converted into two utilization methods by using the same device. Waste is reduced and ease of use is improved.

Description

technical field [0001] The invention relates to the field of boilers, in particular to a waste heat recycling device for a boiler in a power plant. Background technique [0002] Power plant boilers, also known as "power plant boilers", refer to medium and large boilers in power plants that provide a specified quantity and quality of steam to steam turbines. One of the main thermal equipment in thermal power plants. It is often matched with a steam turbine generator set of a certain capacity and is mainly used for power generation, but it can also be used for external heating in some special occasions. Generally, the evaporation capacity is large, and the steam parameters (steam temperature and steam pressure) are very high. A complete set of auxiliary equipment is required. Most of them need to be equipped with a chamber combustion furnace. The forced ventilation method is adopted, and a variety of fuels (pulverized coal, crude oil or heavy oil, Blast furnace gas or coke o...

AI Technical Summary

Problems solved by technology

Generally, its evaporation capacity is relatively large, and its steam parameters (steam temperature and steam pressure) are very high. It requires a complete set of auxiliary equipment, and most of them need to be equipped with a chamber-burning furnace. It adopts forced ventilation and can burn a variety of fuels (coal powder, crude oil or heavy oil, Blast furnace gas or coke oven gas), the structure is more complex, the efficiency is higher, most can reach about 85-93%, and there are quite high requirements for operation management level, mechanization degree and automatic control technology

[0003] The heat generated by the outer wall of the current power plant boiler is directly dissipated in the external environment during the use process, so in the long-term working process, it will cause a certain waste, so it is necessary to use the waste heat generated by it

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