Double-layer mechanical grate type garbage gasification incinerator and its treatment method

Abstract

The invention discloses a double-layer mechanical grate type waste gasifying incinerator and a processing method thereof. The gasifying incinerator comprises a feeding bin, a gasifying furnace and an ember furnace. The ember furnace is located under the gasifying furnace. The feeding direction of the ember furnace is opposite to that of the gasifying furnace. A piled material sealing section is arranged between the feeding bin and the gasifying furnace. A residue pusher is arranged between the gasifying furnace and the ember furnace. The upper end of the gasifying furnace and the upper end of the ember furnace protrude upwards and are each provided with a smoke outlet. The waste processing method comprises the steps that A, the incinerator is started and heated; B, waste is burned in a hearth of the gasifying furnace; C, continuous waste gasifying and incineration processing is achieved; and D, after the waste and waste residues are burned out, the double-layer mechanical grate type waste gasifying incinerator is turned off. By using the double-layer mechanical grate type waste gasifying incinerator for waste processing, the waste processing capacity is larger, the heat recycling efficiency is high, and the pollutant discharge amount can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of solid waste incineration treatment, and in particular relates to a double-layer mechanical grate type garbage gasification incinerator and a treatment method thereof. Background technique [0002] The existing waste treatment technologies mainly include incineration, sanitary landfill, composting, and waste recycling. Among the conventional waste treatment technologies, incineration has the advantages of obvious reduction effect, complete harmlessness, small land occupation, utilization of waste heat energy, and less secondary pollution, which meets the strategic requirements of my country's sustainable development. However, with the continuous improvement of environmental protection requirements at home and abroad, how to strengthen the control of secondary pollution is particularly important. Therefore, waste pyrolysis and gasification incineration technology is gradually pushed to the road of industri...

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Problems solved by technology

[0007] 2. With the increasing amount of garbage generated and piled up like mountains, the amount of garbage treatment must be effectively increased in order to meet market demand

[0010] Existing gasification incinerators, such as the following two invention patents: Multi-column segmented drive compound domestic waste incinerator (ZL200710092508.9) and two-stage waste incinerator (ZL201010268376.2) Unsolved problems: heat treatment of waste The mode is relatively backward, just drying-burning-burning, the process of solid combustion releasing heat; the thermochemical reaction in the furnace is dominated by oxidation reaction, supplemented by reduction reaction, which is easy to produce secondary pollutants; when garbage is burned in the furnace, the peroxygen coefficient Large, large amount of primary air and secondary air supply, high dust content in flue gas, great impact on heat energy recovery system and flue gas treatment system, easy to accumulate dust, large amount of flue gas, reducing heat conversion efficiency; Without a separate gasification furnace and ember furnace, waste can only be processed in batches, and large-scale continuous gasification and incineration of waste cannot be realized, and the amount of waste treated is small

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