Anode protection of sulfuric acid transport vehicles and ships

During the transportation of sulfuric acid from the manufacturer to the user, the metal container of the transport vehicle and ship will be corroded and the amount of molten iron in the sulfuric acid product will increase. Portable anode protection has been used in these containers to maintain acid purity and extend storage time.

If a portable control power supply system and a large DC regulated power supply are installed on the truck tanker carrying 93% sulfuric acid, the latter is used to blunt the tank car after filling with sulfuric acid, while the former is used to maintain passivation during transportation. The anode protection system operates normally and has good protection effect.

The electrical performance, wiring and test circuit of the controller should be checked regularly before acid injection. When the acid is pumped to the tank car, the potential controller works automatically and forms a passive film on the metal surface, and then the maintenance operation is carried out until the sulfuric acid is pumped out.

Practice has proved that the current demand of the protection system is very low, and the 200A. H battery installed at first is not needed, so it is removed. Only the battery of the car itself can provide all the power needed for the maintenance of the vehicle. When the protection system is running, the current of the controller is only 1 ~ 2 s, and then it is disconnected for 5 ~ 10 min. The current pulses of these supplies vary from 25 to 30 a depending on the concentration of sulfuric acid.

High temperature fuming sulfuric acid has strong corrosivity, which can make the carbon steel equipment be corroded and destroyed in a short time. The corrosion rate can be as high as 39mm / A.

Shandong Linyi Bosi conductive materials Co., Ltd. is a high-tech enterprise specializing in the production of MMO flexible anode, conductive polymer flexible anode and titanium coated anode, mainly providing cathodic protection technology, engineering design, installation and technical services. 

Tel: +86 17568010262，0539-3712117.