what is dissimilar metal or galvanic corrosion prevention? Corrosion is a process of damage to a material due to environmental influences. This is a natural process in metals. Corrosion in metals and equipment in the oil and gas industry results in financial losses, pollutes the environment and can endanger human safety. Engineers and scientists do a lot of research on corrosion to prevent and control the corrosion rates. On this occasion, we will discuss Galvanic Corrosion or known as dissimilar metal corrosion. This corrosion occurs when 2 different metal or alloy metals in the same environment and interconnected. This corrosion[…]
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CO2 removal from Natural gas in Ammonia Plant
CO2 removal unit in Ammonia Plant The raw material for the ammonia plant is natural gas. but unfortunately, many gas wells contain CO2 so that CO2 gas is very disturbing the process of making ammonia. In general, CO2 gas is discharged at the front of a factory or known as the front end process. Natural Gas will enter the CO2 removal unit. in this unit, an MDEA liquid will remove the CO2 gas from the natural gas stream. In general, there are 2 high vessels or columns which are the core part of this CO2 removal unit. On the left side,[…]
Read morewhat is wet corrosion in oil and gas industry?
wet corrosion There are many ways to classify corrosion. However, in general, corrosion is divided into 3 major groups namely Wet corrosion, Dry corrosion, and biological corrosion. Wet corrosion, as the name implies, occurs only in the presence of an aqueous solution or an electrolyte. Dry corrosion or dry corrosion occurs when there is no fluid present or temperature above the dew point of the environment. Biological corrosion or biological corrosion is a specific type of wet corrosion that occurs in the presence of living organisms. sometimes wet corrosion is named as aqueous corrosion. Wet corrosion is an electrochemical process,[…]
Read morewhat is Stress corrosion cracking ?
Stress Corrosion cracking (SCC) this phenomenon can be defined as material cracking due to the combined effect of static stress and corrosion. The stress involved can be residual stress and actual stress from an external load. The corrosion that occurs is generally very localized. Localized corrosion on the surface of the material usually acts as a stress raiser or stress concentrator. This corrosive cracking can be either transgranular or intergranular cracking depending on the type of alloy, metallurgical and environmental conditions. there are 3 main causes that determine the occurrence of Stress Corrosion Cracking are: Tensile stress. This tensile stress[…]
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