What is the purpose of insulating some natural gas pipelines in refineries?
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What is the purpose of adding insulation to some natural gas pipelines or other pipelines at normal temperatures in refineries? After all, they aren’t high-temperature pipelines
Insulated pipelines are used to reduce heat absorption. It’s extremely hot in summer, and with the sun’s rays, stress levels rise dramatically.
To prevent freezing: even in hot summers, the medium inside the insulated pipes can remain at a constant temperature
The effect in winter becomes evident~~~
Insulation effect to prevent heat loss!
1. In winter, prevent the temperature from dropping too low, as this can cause liquid to form in the gas inside； Such as pipelines for natural gas, dry gas, etc. 2; some of these pipelines have functions such as heat protection and insulation
Natural gas contains water vapor, and unlike light and heavy oils, this water cannot be separated from the gas. In winter, water tends to precipitate at dead ends or in low-lying areas, causing pipes, valves, and accessories to freeze. Therefore, it is necessary to minimize unnecessary low points; if such points are unavoidable, heat tracing should be used, with the temperature set at a level sufficient to melt the ice.
Another point is that insulation is used to protect against sunlight
1. In winter, the presence of liquid can lead to freezing at the locations where the control valves are situated, causing these valves to stick and stop functioning. 2. Due to the low temperature of the natural gas being transported, it absorbs a large amount of heat when it comes into contact with humid air in the pipelines, resulting in the formation of water droplets