Mechanical grate-type garbage single-furnace gasifying incineration and boiler system

Abstract

The invention discloses a mechanical grate-type garbage single-furnace gasifying incineration and boiler system which is smaller in transformation heat efficiency loss and higher in heat recovery rate. The system comprises a gasifying incineration furnace, a boiler system and an air supply system, wherein the gasifying incineration furnace comprises a material feeding cabin and a furnace body; a material stacking sealing section is arranged between the material feeding cabin and the furnace body; the upper end of the furnace body is upwards convex and is provided with a first smoke outlet; the boiler system comprises a boiler body; the boiler body comprises a cyclone combustor, a furnace chamber a and a furnace chamber b which are communicated with one another; a water-cooling wall is arranged in the cyclone combustor; a superheater is arranged in the furnace chamber a; an evaporator is arranged in the furnace chamber b; the smoke inlet of the cyclone combustor is connected with the first smoke outlet; the top end of the boiler body is provided with a steam pocket; a steam-water inlet is formed in the steam pocket; the steam pocket is connected with water-cooling wall and the water inlet of the evaporator for outputting water; the water-cooling wall and the steam outlet of the evaporator are connected with the steam inlet of the steam pocket for steam backflow; and the saturated steam outlet of the steam pocket is used for outputting superheated steam through the superheater.

Description

technical field [0001] The invention belongs to the technical field of solid waste incineration treatment, and in particular relates to a mechanical grate type garbage single furnace gasification incineration and a boiler system 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...

AI Technical Summary

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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