Long-term corrosion protection of hydrofluoric acid-containing wastewater pool

Anti-corrosion of sewage tank usually cracks, bulges, peels and corrodes in 2-3 years. The maintenance cost of anti-corrosion of sewage tank is extremely high. Renovation requires draining sewage and cleaning the tank, which is very difficult to operate. Enterprises need to stop production, and the loss is very high. After stopping production, cleaning and repairing, it will be damaged for 2 years, and repeated maintenance will cost huge enterprises. The reason is that the usual design scheme of sewage pool anticorrosion is 3 cloths and 5 oils of FRP anticorrosion, and the FRP process is 1 coat of sealing primer →N coats of resin paint →N coats of plastering, which is often complicated, with at least 9 times; The reason for the complicated construction is that the resin used alone has no strength, and it is necessary to add glass fiber cloth to enhance the strength of the paint film. The shrinkage ratio of glass fiber cloth and resin is different, which leads to the phenomenon of easy cracking, delamination and bulging during use. The corrosion resistance of coating depends on the corrosion resistance of resin. Usually, epoxy resin and vinyl resin have poor corrosion resistance, and imported vinyl resin is more expensive. Some domestic vinyl enterprises have done well, but it is difficult to avoid the phenomena of manual construction delamination, cracking, bulging and peeling. Dilin wax 98% high-solid and heavy-duty anti-corrosion coating easy anti-corrosion sewage pool, now there are nearly 100 sewage pools, including hydrofluoric acid, DMF, dichlorotrichloroethane, high concentration sodium hypochlorite, high acid, high VOC concentration, 33% hydrochloric acid, 80 degrees high temperature and many other different pools; The construction technology is simple, usually one coat of Dilin 6716 infiltration sealing primer → one coat of Dilin 6900 heavy anti-corrosion, totaling two coats; Strong acid and alkali resistance, Dilin 704 and Dilin 620 coatings are resistant to hydrofluoric acid, Dilin 8550 coatings are resistant to DMF and dichlorotrichloroethane; Easy to apply, high density, no bubble and shrinkage, low application cost, short application time, zero VOC and environmental pollution; So that the service life and one-time material cost are almost the same as the FRP anticorrosion cost. Dilin 704 and Dilin 620 wax heavy-duty anticorrosive coatings are widely used in hydrofluoric acid environment, and have been used in many hydrofluoric acid sewage tanks and other environments for a long time.