Paint slag drying and thermal oxidizing system

Abstract

The invention discloses a paint slag drying and thermal oxidizing system. The paint slag drying and thermal oxidizing system comprises a paint slag pool, a paint slag pump, a paint slag filter press,a filter press crushing mechanism, a drying and oxidizing mechanism, an exhaust gas dedusting mechanism and a paint slag finished product recycling mechanism, wherein a discharging outlet of the paintslag pool is connected with a feeding inlet of the paint slag filter press through the paint slag pump, and a slag outlet of the paint slag pool is connected with the paint slag crushing mechanism; aslag outlet of the paint slag crushing mechanism is connected with the drying and oxidizing mechanism, the drying and oxidizing mechanism comprises a drying and oxidizing barrel, a barrel body of thedrying and oxidizing mechanism barrel is provided with a thermal bypass connector used for being externally connected with a heat source, and a stirrer is arranged in the barrel body; the drying andoxidizing barrel is used for drying and oxidizing paint slag in the barrel, exhaust gas obtained after drying and oxidizing are conducted is conveyed to the exhaust gas dedusting mechanism, and the paint slag is conveyed to the paint slag finished product recycling mechanism; and the exhaust gas dedusting mechanism is used for filtering the exhaust gas, obtained residual paint slag is conveyed tothe paint slag finished product recycling mechanism, and the filtered exhaust gas is exhausted through a gas outlet. According to the paint slag drying and thermal oxidizing system, drying and thermaloxidizing treatment can be conducted on the paint slag, the decomposing treatment efficiency can be improved, generation of toxic substances can be reduced, and the carbon emission can be reduced.

Description

technical field [0001] The invention relates to the technical field of paint residue treatment, in particular to a paint residue drying thermal oxidation system. Background technique [0002] Automobile paint and its waste residue are mainly composed of four basic components: resin, pigment, solvent and additive. Resin is the film-forming substance of paint, which is divided into natural resin and artificial resin. Natural resin is mainly composed of insect or tree secretions, and the main components are rosin and shellac; the main components of artificial resin are acrylic resin, alkyd resin, melamine, Nitrocellulose, polyurethane resin, epoxy resin, etc. Pigments are divided into inorganic pigments and organic pigments according to the composition. Inorganic pigments are usually dark in color, and the main components are metal oxides such as titanium dioxide, iron oxide red, etc.; organic pigments are usually bright in color, and the main components are benzimidazolone, h...

AI Technical Summary

Problems solved by technology

[0003] The existing technology generally adopts direct incineration to dry the paint slag, but the paint slag is very sticky, and there is a special adhesive phase stage (moisture content 40%-60%) in the drying process. In an extremely narrow transition section, the paint slag is easy to agglomerate, the surface is hard and difficult to crush, but the inside is still muddy, so the drying degree is not high, and dioxins will be produced during the paint slag incineration process and other toxic substances, which do not meet the national low-carbon environmental protection requirements

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