Boiler system with multiple boilers arranged in stacked mode

Abstract

The invention discloses a boiler system with multiple boilers arranged in a stacked mode. The boiler system comprises the multiple boilers with the same type specification, steam pipelines, electric steam pipeline closing and opening valves, valve controllers and a steam header pipe. Through the stacked boilers, a large-volume boiler is decomposed, and the steam quantities generated by the stacked boilers are superposed to replace the steam quantity generated by the single large boiler; each boiler is additionally provided with the corresponding electric steam valve to achieve opening and closing of the corresponding steam pipeline of the boiler, so that the steam pipeline of each boiler is connected with or disconnected from the header pipe; and according to power generating requirements, the steam load is changed by shutting down one or more boilers, and it can be ensured that all the boilers can work under the rated loads. Compared with the single large boiler, the load of the multi-boiler system is easy to adjust, boiler efficiency is high, and the total quantity of discharged pollutants is greatly reduced.

Description

technical field [0001] The invention belongs to the field of power generation boilers, and in particular relates to a boiler system in which multiple boilers are stacked. Background technique [0002] my country is a country where coal is the main primary energy source, and coal-fired power generation plays a dominant role in power production. And in a long period of time, the energy structure using coal as primary energy will not change. The "National Medium and Long-Term Science and Technology Development Plan (2006~2020)" requires improving the efficiency of coal utilization and conversion and reducing air pollution, so it puts forward higher requirements for the efficient and clean utilization of coal. [0003] At present, domestic power plants are equipped with a single large-scale boiler according to the electric power of the steam turbine generator set. Commonly used boilers include layer-fired furnaces, pulverized coal furnaces, and circulating fluidized bed boilers...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-boiler cascaded boiler system, which can effectively avoid the problems of poor load regulation ability and high concentration of dust and other pollutants in large power plants.

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