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In some gas stations, all filters, pipes and fittings are made of stainless steel and aluminum alloy in order to keep the fuel clean. The electrostatic potential of these materials is different from that of ordinary carbon steel. Only when the protection potential ranges of various materials overlap each other, the cathodic protection of different materials can be realized in different metal devices. If the various materials are separated by insulated joints, but they are connected to the same protection system, these joints must use diode circuits when the protection system is turned off to avoid bimetallic corrosion.
If the storage medium is conductive, cathodic protection can be carried out in a flat bottom tank. At the bottom of the tank, water and impurities often cause corrosion separation. If the electrolyte can cover the tank bottom to a sufficient depth, cathodic protection can prevent tank bottom corrosion. Fuel oil manufacturers and suppliers usually take measures to prevent electrolyte solution from entering, because they can harm the purity of the oil and damage the heating circuit at the bottom of the tank.
The suction pipe of oil tank should be arranged correctly to prevent electrolyte from being sucked out. In addition, the tubing must be designed so that the interference to the electrolyte is as small as possible. One end of the suction pipe must be at least 5cm above the electrolyte level. AZ63 magnesium anode was selected as sacrificial anode. They are electrically isolated from the tank bottom plate and evenly distributed. The anodes are electrically connected to each other and connected to the vault of the tank and to the insulated cables. Sacrificial anode produces a large number of corrosion products, forming sludge and impurities. Using inert forced current auxiliary anode will not have these disadvantages. These are usually titanium anodes with metal oxide coatings.
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.