Sulphate rectification residue incineration and reduction integrated device and process

Abstract

The invention discloses a sulfate rectification residue incineration and reduction integrated device. The device comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area and a boiling reduction area, the cyclone incineration area is provided with a waste liquid combustor and a secondary air distribution device, the waste liquid combustor is provided with a waste liquid inlet and a waste liquid primary air inlet, the boiling reduction area is provided with a reducing gas injection device, an air distribution nozzle and a furnace bottom slag cooling device,the cyclone incineration area and the boiling reduction area are of an integrated structure. The invention further discloses a sulfate rectification residue incineration and reduction integrated process. Waste solid, waste liquid and waste gas in the device can be independently sprayed into the device to be incinerated, secondary air and primary air form rotational flow in opposite directions, a high-temperature area in the furnace is violently stirred, incineration efficiency is improved, a removal rate of organic waste residues in sulfate rectification residues is increased, strong heat radiation of the incineration area is used for reducing metal oxide, and fuel and equipment investment needed by the reduction reaction are saved.

Description

technical field [0001] The invention relates to the field of hazardous waste environmental protection, in particular to an integrated device and process for incineration and reduction of sulfate rectification residue. Background technique [0002] In the production process of organic chemical industry, while obtaining useful products or intermediate products through rectification and separation technology, most of them will produce a certain amount of residue or raffinate in the bottom of the tower, which often contains more impurities and toxic and harmful substances. In our country It is often referred to as distillation residue in hazardous waste management. With the development of the organic chemical industry and the improvement of the refinement rate, the amount of distillation residues is also increasing. Rectification residues are mostly viscous tar-like liquids or solids with complex components. Besides the main pollutants, the residues also contain inorganic salts...

AI Technical Summary

Problems solved by technology

Rectification residues are mostly viscous tar-like liquids or solids with complex components. Besides the main pollutants, the residues also contain inorganic salts containing metal elements. The main pollutants can generally be divided into benzene series, polycyclic aromatic hydrocarbons, halogen Substitutes, heavy metals and other types, most of which are flammable, corrosive and highly toxic, are hazardous wastes, while the inorganic salts in the rectification residues can be recovered. If the metal elements in the rectification residues cannot be effectively used and Disposal will cause waste of resources and environmental pollution

[0003] The organic waste that cannot be recycled in the rectification residue is often treated by high-temperature incineration, and some heavy metals and sulfates containing metal elements in the rectification residue can be recycled, and some sulfates are decomposed into metal oxides and sulfur dioxide at high temperatures. and sulfur trioxide to recover the metal oxide. If the metal element needs to be used in the industry, the recovered metal oxide needs to be reduced to the metal element under high temperature conditions. This process needs to reintroduce the reaction equipment and provide high temperature conditions. , there are problems of cumbersome operation and waste of fuel

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