Multi-source waste disposal system and method based on pulverized coal boiler

Abstract

The invention discloses a multi-source waste disposal system and method based on a pulverized coal boiler. The multi-source waste disposal system comprises a material storage system, a hot air system, an alkaline removal agent system, an integrated disposal system, a burner, the pulverized coal boiler and a pollutant removal system; an outlet of the material storage system is connected with a material inlet of the integrated disposal system; a high-temperature flue gas connector is arranged on a flue between a hearth outlet of the pulverized coal boiler and a coal economizer, a medium-temperature flue gas connector is arranged on a flue at an outlet of the coal economizer of the pulverized coal boiler, and the high-temperature flue gas connector and the medium-temperature flue gas connector are connected with a flue gas inlet of the integrated disposal system; an outlet of the hot air system is connected with an air inlet of the integrated disposal system; an outlet of the alkaline removal agent system is connected with a solution inlet of the integrated disposal system; and an outlet of the integrated disposal system is connected with an inlet of the burner, and an outlet of the burner is connected with a hearth of the pulverized coal boiler. The system and the method can achieve disposal of multi-source waste.

Description

technical field [0001] The invention belongs to the field of multi-source waste disposal, and relates to a multi-source waste disposal system and method based on a pulverized coal boiler. Background technique [0002] With the acceleration of my country's urbanization process, the output of multi-source wastes has increased rapidly, the existing environmental protection facilities have insufficient disposal capacity, and the national awareness of environmental protection has gradually increased. local government problems. Pulverized coal boilers in coal-fired power plants have favorable conditions such as rich heat and electricity, high furnace combustion temperature and complete environmental protection facilities at the tail. As a new way of waste incineration disposal, they have attracted the attention of the country and the industry. However, the different dry and wet forms of waste from multiple sources cannot meet the special requirements of the suspension combustion o...

AI Technical Summary

Problems solved by technology

However, the different dry and wet forms of waste from multiple sources cannot meet the special requirements of the suspension combustion of pulverized coal boilers, which restricts the development of waste disposal in the thermal power industry. In addition, the content of Cl in waste is relatively high, and a large amount of chlorine will be generated during the incineration process. The HCl gas will cause serious corrosion to the water wall of the boiler and affect the operation safety of the original boiler system; some wastes contain high content of heavy metals, and a large amount of mixed combustion will cause the content of heavy metals in the coal dust produced by the boiler system to exceed the standard, affecting Comprehensive Utilization of Fly Ash

The above-mentioned factors and potential risks lead to a serious lag in the development of using pulverized coal boilers to dispose of multi-source wastes. In addition, the current situation of low utilization hours of thermal power units has led to low utilization rates of large-scale equipment in the country. New waste power plants or incinerators and other processes have caused Social investment funds and land waste

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