Multi-functional composite cleaning solution for on-line cleaning of heavy water scales of water-ring vacuum pump

Abstract

The invention discloses a multi-functional composite cleaning solution for on-line cleaning of heavy water scales of a water-ring vacuum pump. The multi-functional composite cleaning solution is prepared from the following components by mass: 4 to 8% of hydrochloric acid, 5 to 10% of an organic acid, 0.05 to 0.15% of perfluorobutylated sulfonamide, 0.3 to 0.8% of a penetrant, 0.2 to 0.5% of an active extract of bottom sediment, 0 to 0.5% of a Fe<3+> inhibitor, 0.02 to 0.10% of organosilicone, and the balance of water. The cleaning solution can effectively shorten the descaling time of the water-ring vacuum pump. The output of acid mist is low when on-line cleaning is performed at the temperature of 50 to 80 DEG C, the gaseous corrosion of equipment and pollution on the surrounding environment are avoided, the cleaning process is simple, the water is saved, the quantity of wastewater effluent is only 20% of that of a traditional cleaning method, the pH of the discharged wastewater is neutral, acid-base neutralization is not needed, and the discharged wastewater is easy to treat to reach the standard.

Description

technical field [0001] The invention belongs to the technical field of chemical cleaning of industrial equipment, and in particular relates to a multifunctional composite cleaning liquid suitable for cleaning heavy-duty water ring vacuum pumps during operation. Background technique [0002] Water ring vacuum pumps are widely used in many processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture resurgence and vacuum degassing, etc. In addition, because the gas compression in the water ring vacuum pump is Isothermal, so it can extract flammable and explosive gases. There is usually an appropriate amount of circulating water in the pump body as the working fluid. The evaporation and concentration effect formed during the operation of the system will cause a large amount of hard and heavy scale to form on the inner wall of the pump in a short period of time, resulting in a dec...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a multi-functional composite cleaning solution suitable for cleaning the heavy scale operation of the water ring vacuum pump. By using the combination of inorganic hydrochloric acid and organic acid, a large amount of gas in the scale dissolution reaction process in the complex cavity of the water ring vacuum pump can be reduced. Stress damage to the pump body occurs, and the extracted sediment active substance is used as a green corrosion inhibitor to eliminate the pollution caused by the corrosion inhibitor to the environment, supplemented by anti-fog and dispersants to overcome the large amount of volatilization of hydrochloric acid in the traditional cleaning solution and the cleaning time Defects of long and poor cleaning effect