A dedicated rotary kiln for pyrolysis oxidation of solid waste salt

Abstract

A dedicated rotary kiln for pyrolysis oxidation of solid waste salt relates to the treatment field of industrial inorganic waste and includes a rotary barrel and a heating furnace. The front end of the rotary barrel communicates with the heating furnace. The top of the front end of the rotary barrel is provided with a feed hopper. The top and bottom of the rear end of the rotary barrel are provided with a fume outlet and a slag outlet, respectively. A heat accumulating type porous fire resisting wall is disposed in a combustion chamber of the heating furnace at the connection with the rotary barrel for separating the rotary barrel and the combustion chamber of the heating furnace. The heat accumulating type porous fire resisting wall can prevent open fire from emerging into the rotary kilnto directly contact the solid waste salt so as to lead melting of the organic dry salt. The rotary kiln guarantees that the solid waste salt will not be glued and pyrolysis oxidation reaction will beconducted completely, and has advantages of high heat exchange efficiency, high transportation efficiency and high pyrolysis efficiency.

Description

technical field [0001] The invention relates to the field of industrial inorganic waste treatment, in particular to a special rotary kiln for pyrolysis and oxidation of solid waste salt. Background technique [0002] Many enterprises produce solid waste salt in the process of fine chemical production. The solid salt is often treated as solid waste because the organic matter in it cannot be reused in industrial production, which wastes resources and costs a lot. At present, the commonly used way to treat solid waste salt is to use pyrolysis oxidation method to generate flue gas by combustion method, and directly contact high-temperature flue gas with solid waste salt material to oxidize and decompose organic matter in solid salt. Since the flue gas is obtained through combustion, the flame in the combustion process can directly contact with the solid waste salt, resulting in the melting of the organic dry salt in the solid waste salt, making the solid waste salt sticky, which...

AI Technical Summary

Problems solved by technology

The disadvantages are that the drive shaft works in a cylinder in a highly corrosive environment, and it is easy to cause corrosion damage for a long time; the heat exchange efficiency of the device is too low to effectively separate toxic and harmful substances, and the efficiency of tumbling transportation in the cylinder is too low

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