A solid waste incineration system and treatment method with waste gas secondary combustion dry ignition device

Abstract

The invention discloses a solid waste incineration system with an exhaust gas secondary combustion drying ignition device and a treatment method thereof. The solid waste incineration system comprises an incineration device and an air extraction system, wherein the incineration device comprises a cloth section, a drying section, an ignition section and an incineration section; operation at the drying section and the ignition section is achieved through the exhaust gas secondary combustion drying ignition device; the exhaust gas secondary combustion drying ignition device is in a cover body form, covers sintering materials, and is divided into an exhaust gas secondary combustion drying part at the front section and an ignition part arranged at the tail end; the incineration exhaust gas returns to the ignition device and burns in the situation that gas fuel is externally added, and a secondary combustion chamber is formed; and combustible matters in the flue gas are completely combusted, and harmful substances such as CO, NOx and dioxin in the flue gas are decomposed and are effectively treated. According to the solid waste incineration system, a high temperature gas generated during combustion ignites the materials, and waste heat of the exhaust gas dries and preheats the materials before ignition.

Description

Technical field [0001] The invention belongs to solid waste incineration treatment technology, and specifically relates to a technology for flue gas treatment after incineration of general solid waste and hazardous waste. Background technique [0002] Solid waste refers to solid and muddy substances discarded by humans in production and living activities, referred to as solid waste, which also includes solid particles separated from waste water and waste gas. Solid waste has a wide range of sources, various types and complex composition. The hazards of solid waste to the human environment mainly include land occupation, soil pollution, water pollution, air pollution, and environmental sanitation. [0003] Since the composition of solid waste is extremely complex and contains a variety of pollutants, such as heavy metals, waste plastics, waste wood, etc., many chemical reactions occur during the incineration process. In addition to excess air and carbon dioxide, the flue gas produc...

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Problems solved by technology

[0007] However, the investment cost of directly using the secondary combustion chamber is high, and the operation is difficult, which greatly increases the operating cost of solid waste treatment, especially hazardous waste treatment.

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