Direct heat supply type multi-stage series turbulent bed pyrolysis stripping furnace in combustion flame furnace

Abstract

The invention relates to the field of solid waste treatment, in particular to a direct heat supply type multi-stage series turbulent bed pyrolysis stripping furnace in a combustion flame furnace. The direct heat supply type multi-stage series turbulent bed pyrolysis stripping furnace comprises a furnace shell, and the furnace shell comprises an upper section furnace, a middle section furnace, a lower section furnace and a fire-resistant heat insulation lining which communicate with one another; the upper section furnace is provided with an organic solid waste material inlet and a gaseous mixture outlet; the middle section furnace is provided with a plurality of groups of turbulent micro reaction beds which are connected in series; the lower section furnace is provided with a fuel burner, a pressure and temperature gas inlet and a residue outlet; and fuel is combusted through the fuel burner to generate high-temperature flue gas which flows from bottom to top and is in direct contact with organic solid waste to provide heat. The direct heat supply type multi-stage series turbulent bed pyrolysis stripping furnace has the effect of improving the pyrolysis efficiency of the reactor.

Description

technical field [0001] The present application relates to the field of solid waste treatment equipment, in particular to a multi-stage serial turbulent bed pyrolysis and stripping furnace directly feeding heat in a combustion flame furnace. Background technique [0002] With the acceleration of my country's economic development and urbanization, the consumption of resources is increasing, the output of various wastes is increasing, the forms of waste are diversified, and problems such as soil and groundwater pollution are becoming more and more serious. National environmental protection regulations stipulate that solid wastes containing organic matter (i.e. organic solid wastes, most of which are hazardous wastes) need to be reduced and treated in a harmless manner to meet environmental protection emission requirements. Appropriate technology can be used to realize resource recovery Utilization, the polluted soil needs to be repaired and treated to meet the soil quality requ...

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Problems solved by technology

[0007] The pyrolysis method varies greatly depending on the pyrolysis reactor (pyrolysis furnace) technology. The "intermittent" pyrolysis furnace can feed materials once and discharge slag once, so it cannot be continuously produced, and the processing scale of the pyrolysis furnace is small; " The continuous type pyrolysis furnace has a small processing scale, and the continuous operability is not high due to various factors. At present, both "intermittent" and "continuous" pyrolysis furnaces use organic solid waste in the furnace, heat carrier (External heat supply) Outside the furnace, the "indirect" heat supply and pyrolysis method in which the organic solid waste in the jacket is in direct contact with the heat has low heat transfer efficiency and low heat absorption efficiency, resulting in low heat utilization efficiency and heat loss. Problems such as slow decomposition reaction speed, long reaction time, high energy consumption, pyrolysis solid residues cannot meet the requirements of ultra-clean emission environmental protection indicators, etc.

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