Acid mist inhibitor

Abstract

The invention discloses an acid mist inhibitor, and belongs to the technical field of metal surface treatment assistants. The acid mist inhibitor comprises acid mist inhibition balls and an acid mistinhibitor body, wherein the acid mist inhibition balls are filled with the acid mist inhibitor body; the acid mist inhibitor body comprises a surfactant, a molecular film-forming agent, an emulsifier,a foam stabilizer, a solvent and other components; the acid mist inhibition balls comprises outer ball bodies; and a plurality of acid mist inhibitor seepage holes are evenly formed in the surfaces of the outer ball bodies. According to the acid mist inhibitor, the acid mist inhibition balls are filled with the acid mist inhibitor body with the acid mist inhibition effect, so that slow release ofthe acid mist inhibitor body is achieved, and sufficient mixing of the acid mist inhibitor body and acid liquid is achieved in the slow release process without the need of redundant stirring and mixing operation; and arranged oleophylic and hydrophobic magnetic fibers are used for adsorbing oil stains generated in the acid pickling process, so that an oil stain isolation layer is formed on the surface of the acid liquid, the generation amount of acid mist is effectively reduced, and the oil stain inhibition effect is further improved through cooperation with the acid mist inhibitor body.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment additives, in particular to an acid mist inhibitor. Background technique [0002] Ordinary carbon steel is easy to rust, and the oil stain layer and rust layer on the surface need to be removed before processing and use. The most commonly used method in the industry is to use acid solution and other additives as a rust remover to dissolve and remove the rust layer and oil stain layer. This method has the lowest cost and is easy to operate. In the process of hydrochloric acid pickling, on the one hand, hydrochloric acid itself has a certain volatility, and it directly volatilizes into the atmosphere to produce acid mist; When the diameter is more than 0.3mm, its buoyancy exceeds the interfacial tension, and the bubbles detach from the metal surface and accelerate from the hydrochloric acid to burst at the interface between the acid liquid and the air. A large amount of acid enters...

AI Technical Summary

Problems solved by technology

Since stainless steel adopts a high-concentration nitric acid mixed acid pickling process, the acid mist fogging speed is fast and the NOx concentration is high. From the perspective of application effect, the existing acid mist inhibitors need tens of minutes of foaming time, and too long foaming Time makes the fog suppression effect not obvious, and the foam layer is easy to break, which affects the acid fog suppression effect, and the existing acid fog suppressors are generally added to the acid liquid in advance, and then the acid liquid and acid mist are suppressed Only when the agent is fully stirred and mixed can the effect of suppressing acid mist be produced, which not only affects the pickling efficiency, but also increases the use cost

Images