Method for recovering polymerized phosphate by mixed combustion of phosphorus-containing waste

Abstract

The invention relates to a method for recovering polymerized phosphate by mixed combustion of phosphorus-containing waste. The method comprises the steps that the phosphorus-containing waste and natural gas are directly mixed and burnt through an incineration spray gun; the consumption amount of the phosphorus-containing waste ranges from 1 m<3> / h to 6 m<3> / h, the consumption amount of the natural gas ranges from 50 m<3> / h-500 m<3> / h, and the combustion temperature ranges from 600 DEG C to 850 DEG C; and the phosphorus-containing waste is firstly dried in flames after being atomized, organic matter solid particles are formed and move along with the flame airflow, incineration is continued, organic phosphorus is changed into inorganic phosphate, then the solid density is increased, the particles are precipitated gradually from the flames or the high-temperature airflow, the automatic separation function is achieved, the particles are separated from a high temperature area, and the product melting is reduced.

Description

technical field [0001] The invention relates to a method for recycling phosphorus-containing waste materials, in particular to a method for recovering polymerized phosphate by mixed combustion of phosphorus-containing waste materials. Background technique [0002] Due to the phosphorus-containing waste residues and waste liquids in many industries such as oil refining, chemical industry, medicine and pesticides, according to environmental protection requirements, the discharge of waste residues and waste liquids has strict requirements on phosphorus content, especially for the pesticide industry, phosphorus-containing waste liquids and waste residues are more common. Such as glyphosate, paraquat, acetochlor, acephate, chlorpyrifos, propanil, glufosinate, imidacloprid, chlorimsulfuron, triazophos, malathion and other pesticide industries, and their raw materials or Production of intermediates, such as phosphorus trichloride, phosphorus oxychloride, phosphorous acid, dimethyl ...

AI Technical Summary

Problems solved by technology

These existing treatment methods are costly and also reduce the utilization rate of phosphorus resources

[0003] Patent 201210020303.0 discloses a two-stage incineration device, which includes an L-shaped furnace body connected with a vertical incinerator and a horizontal incinerator. It is characterized in that the vertical incinerator is divided into a combustion zone and a settling zone. Fuel burning guns and waste atomizing guns are installed in the area, and the waste liquid atomization and combustion are carried out in two steps, and the incineration is not sufficient

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