Primary drying air control system and method for mechanical-grate garbage incinerator

Abstract

The invention discloses a primary drying air control system and method for a mechanical-grate garbage incinerator. The system comprises a flue gas recirculation baffle, a flue gas recirculation fan, arecirculation flue gas flow sensor, a recirculation flue gas temperature sensor, a garbage moisture content sensor, a recirculation flue gas temperature sensor gain module, a garbage moisture sensorgain module, a binary multiplication operation module and a PID controller. The flue gas recirculation baffle and the flue gas recirculation fan are installed at the tail of a boiler, the recirculation flue gas flow sensor and the recirculation flue gas temperature sensor are installed between the flue gas recirculation baffle and the flue gas recirculation fan, the garbage moisture content sensoris installed at an outlet of a garbage hopper, the recirculation flue gas temperature sensor gain module is connected with the recirculation flue gas temperature sensor, the garbage moisture sensor gain module is connected with the garbage moisture content sensor, the binary multiplication operation module is connected with a boiler outlet steam set value gain module, the garbage moisture sensorgain module and the recirculation flue gas temperature sensor gain module, and the PID controller is connected with the binary multiplication operation module, the flue gas recirculation baffle and the recirculation flue gas flow sensor. According to the primary drying air control system and method for the mechanical-grate garbage incinerator, the economical efficiency and the adjusting performance of a primary air system are thoroughly improved, the incineration efficiency of the grate incinerator is improved, and pollutant emission is reduced.

Description

technical field [0001] The invention relates to the technical field of automatic control of waste incineration power generation, in particular to a primary drying air control system and method for a mechanical grate waste incinerator. Background technique [0002] With the increasing emphasis on environmental protection, waste incineration power generation is an important means of "reduction, harmlessness, and resourceful" disposal of domestic waste. The development of the industry has attracted much attention. It meets the requirements of my country's sustainable development strategy and is in line with national policies. With strong support, domestic waste incineration has entered the stage of comprehensive market development, and grate furnace is one of the main types of waste incineration. [0003] At present, domestic enterprises have realized the independence of incineration equipment through the introduction of advanced technologies such as German Martin, Belgian Seghe...

AI Technical Summary

Problems solved by technology

Although this method avoids the defects of the above two methods, it burns in the primary air, which reduces the oxygen content of the primary air, and the combustion oxygen in the grate incinerator mainly comes from the primary air, so the oxygen content of the primary air The reduction of waste sacrifices the oxygen-enriched environment in the waste combustion process, which easily leads to the increase of incomplete combustion loss and makes the waste combustion incomplete

[0012] Through the analysis of the above three methods, in addition to large investment and high equipment maintenance costs, all have their own limitations

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