Hazardous waste waste heat preheating energy saver

Abstract

The invention belongs to a preheating device for treating solid particle waste (VOC components are wrapped in particles) generated in the chemical process before incineration, and relates to a novel hazardous waste waste heat preheating energy saver. The novel hazardous waste waste heat preheating energy saver comprises multi-wave inner spiral finned tubes, lattice topology composite layer coupling heating walls and porous multi-directional inclined screening plates. A waste heat energy saver shell is formed by the multi-wave inner spiral finned tubes and the lattice topology composite layer coupling heating walls together, and the porous multi-directional inclined screening plates are densely distributed in a device defined by the shell, wherein the cross section of the device is rectangular. By means of the novel hazardous waste waste heat preheating energy saver, flue gas waste heat is adopted as a hot source, the structure is clear, efficient utilization of flue gas waste heat is promoted, energy is saved, and the structure weight is reduced; and by means of the porous multi-directional inclined screening plates in the device, the soaking performance can be improved effectively, the partial overheating or overburning phenomenon is eliminated, the contact face is effectively expanded, the residence time of hazardous waste in the device is greatly prolonged, the moisture content in hazardous waste is obviously reduced, the incineration initial temperature is improved, the later burning temperature in a furnace is stabilized, and dangerousness of secondary pollution is greatly reduced.

Description

technical field [0001] The invention relates to a novel hazardous waste waste heat preheating economizer. Background technique [0002] Granular solid hazardous waste is produced in the chemical process, which is usually treated by high-temperature harmless incineration. In the process of high-temperature treatment, the incineration temperature is often lower than the set temperature due to the hazardous waste has a certain moisture content and uneven temperature, and the overall combustion efficiency is low, so that a large amount of dioxin gas generated during the incineration process cannot be burned. Cause secondary pollution to the environment. Therefore, a preheating device will be installed before the hazardous waste enters the incinerator. The current preheating device does not fully utilize the waste heat energy, the heat exchange efficiency is low, the equipment is bulky, the insulation performance is weak, the heat loss is serious, there is local overheating or ...

AI Technical Summary

Problems solved by technology

The current preheating device does not fully utilize the waste heat energy, the heat exchange efficiency is low, the equipment is bulky, the insulation performance is weak, the heat loss is serious, there is local overheating or overburning, and because the granular solid hazardous waste is often accompanied by VOC substances, Therefore, vigorous mixing or stirring is not allowed, so that the hazardous waste cannot effectively reduce the moisture content during the preheating process, and the temperature uniformity cannot be guaranteed, which will have a negative impact on the subsequent incineration process.

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