Method and system for increasing calorific value of garbage by virtue of waste heat of garbage incineration plant

Abstract

The invention discloses a method and system for increasing the calorific value of garbage by virtue of waste heat of a garbage incineration plant and belongs to the field of power generation by garbage incineration. The method comprises the steps: carrying out heat exchange on a leachate by virtue of tail smoke waste heat treated by smoke purification and/or sewage water waste heat in a garbage incineration system; and then, spraying the leachate subjected to heat exchange back to a garbage pool. By carrying out heat exchange on the leachate by virtue of the tail smoke waste heat treated by smoke purification and/or the sewage water waste heat in the garbage incineration system, and then, spraying the leachate back to a garbage pile of the garbage pool, the temperature of the garbage pile in the garbage pool of a low-calorific-value garbage incineration power plant can be effectively increased, and the fermentation and leaching of the garbage pile in the garbage pool can be favorably realized, so that the calorific value of the garbage incinerated in the furnace can be increased, furthermore, the on-grid energy is increased, and finally, the stable and continuous operation of a garbage power plant is favorably realized.

Description

technical field [0001] The invention belongs to the technical field of waste incineration power generation, and in particular relates to a method and a system for increasing the calorific value of waste by utilizing waste heat of a waste incineration plant. Background technique [0002] my country's economy has grown rapidly, and various constructions have made great achievements. At the same time, it has also paid a huge price for the destruction of resources and the environment. Content, the "Energy Conservation Law of the People's Republic of China" clearly puts forward the basic national policy of adhering to resource conservation and environmental protection, and puts the construction of a resource-saving and environment-friendly society in a prominent position in the development strategy of industrialization and modernization. [0003] At present, domestic waste incineration power plants are all equipped with garbage pools for storing garbage. The original intention of ...

AI Technical Summary

Problems solved by technology

Usually in spring, summer and autumn, the temperature in the garbage and garbage ponds can meet the requirements of fermentation and drainage, but in winter, especially in the cold northern regions, the temperature of the garbage entering the factory is low, and even ice and snow are mixed in it, resulting in a low temperature in the garbage pond , the fermentation and drainage effects are poor, which greatly reduces the calorific value of the waste entering the furnace, which will seriously affect the stable and continuous operation of the system

At the same time, the waste incineration plant has not effectively recovered and utilized the waste heat of the flue gas after the dust collector; in addition, the heat of the boiler sewage has not been effectively utilized

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