A recycling process of waste slag in the combustion system of fluidized bed boiler

Abstract

The invention relates to a process method and equipment for recycling waste furnace slag in a fluidized bed boiler combustion system. The process method comprises the following steps of (1) analyzing the low caloric value of the waste furnace slag, and judging the combustibility of the waste furnace slag; (2) uniformly proportioning and mixing coal and the combustible waste furnace slag as required, and loading materials to a circulating fluidized bed loading system; (3) setting parameters such as primary air openness, current, induced air openness, the air pressure of an air chamber, primary air amount, primary air pressure and the smoke pressure of an induced air inlet according to the different thicknesses of backing materials; and (4) combusting a coal slag mixture in a circulating fluidized bed boiler according to the parameters which are set in the step (3). By the adoption of the process method for recycling the waste furnace slag in the fluidized bed boiler combustion system and the fluidized bed boiler system corresponding to the process, a great number of coal resources can be saved, the environmental pollution is alleviated, the resource wasting is reduced, the benefit is improved, waste materials are changed into profitable materials, and energy conservation and emission reduction are realized.

Description

technical field [0001] The invention relates to a recycling process of waste slag, in particular to a recycling process of waste slag in a fluidized bed boiler combustion system. Background technique [0002] At present, the carbon content of domestic chain boiler waste slag remains high, resulting in a large amount of energy waste. At the same time, it also needs to be discharged and cause environmental pollution. Only some enterprises use the slag for secondary use in building materials, and the nearby waste slag is used for secondary investment. The process of co-firing circulating fluidized bed boilers and raw coal has not been widely used. Usually, cars are used to transport them to designated places and dump them, and then bury them. This method not only consumes fuel, but also causes damage to the surrounding environment. environmental pollution. [0003] Therefore, how to reutilize the piled up waste furnace slag nearby to save energy and protect the environment is ...

AI Technical Summary

Problems solved by technology

[0002] At present, the carbon content of domestic chain boiler waste slag remains high, resulting in a large amount of energy waste. At the same time, it also needs to be discharged and cause environmental pollution. Only some enterprises re-use the slag as building materials, and the nearby waste The process of co-firing circulating fluidized bed boilers and raw coal has not been widely used. Usually, cars are used to transport them to designated places and dump them, and then bury them. This method not only consumes fuel, but also causes damage to the surrounding environment. environmental pollution

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