Precautions for LNG storage tanks and analysis of specific causes of corrosion

{1} Precautions for liquid oxygen storage tanks LNG storage tanks are equipment used for transportation and storage. In order to confirm safety, we need to understand the corresponding knowledge to avoid the occurrence of risks. Liquid oxygen is non flammable, but it can strongly support combustion and has a fire risk of Class B. It generally cannot spontaneously ignite when in contact with fuel. If two liquids come into contact, liquid oxygen will cause the liquid fuel to cool and condense. The mixture of condensed fuel and liquid oxygen is sensitive to impact and often turns into an explosion under pressure. There are two types of incineration reactions, depending on the mixing ratio of oxygen and fuel and the incineration situation: one is that the fuel and liquid oxygen do not ignite when mixed, but this mixture can explode when burned or subjected to mechanical impact; Another type of liquid oxygen burns before or when it comes into contact with fuel, igniting or burning with repeated explosions. The intensity of incineration reaction depends on the function of the fuel. {2} Analysis of the specific causes of corrosion in liquefied gas storage tanks. If you encounter corrosion during the use of liquefied natural growth gas storage tanks, it must be taken seriously. If its corrosion cannot be well resolved, it will have a significant impact on your normal work. Therefore, we hope that everyone will take it seriously. So what are the reasons for the corrosion of liquefied gas storage tanks? Liquefied gas storage tanks do not require frequent cleaning, and sediment in the water can be discharged by regularly opening the drain valve at the bottom of the tank. But we will find that there is corrosion in the liquefied gas storage tank. What's going on? Let's take a look together below. ① Gap corrosion or oxygen accumulation cell corrosion is the corrosion that occurs when some precipitation or attachment occurs on the metal surface. ② A stone may clog the tube of the corroded copper alloy condenser. At this point, turbulence will immediately occur in the downstream direction of the stone. This will lead to corrosion or wear of the copper protective oxide film and expose unprotected copper alloy metal, resulting in further corrosion. ③ Pitting corrosion is usually caused by defects on the metal surface. Repeat the reaction at an appropriate rate to produce metal perforation phenomenon. ④ Electrochemical corrosion occurs when two or more different metals come into contact and connect in the presence of a conductive liquid electrolyte.