Pipeline drying is an innovative technology that has gained attention globally in recent years. Traditionally, several methods have been used to dry long-distance natural gas pipelines, such as the desiccant method, flowing gas evaporation, and vacuum drying. Each of these techniques has its own advantages and limitations, but vacuum drying has emerged as a highly effective solution. Why is pipeline drying necessary? After the construction of a new natural gas pipeline, it's common to use water or gas for pressure testing. Once the test is complete, the remaining water and gas are typically drained out. However, this process often leaves behind residual moisture inside the pipeline. Natural gas contains various acidic compounds, which can react with the leftover moisture to form hydrates—viscous crystalline substances that accumulate on the pipe walls. Over time, these deposits can cause blockages, leading to operational inefficiencies and potential damage. To prevent this, pipeline drying technology is essential. Vacuum drying is one of the most advanced and widely used methods. It involves using a vacuum pump to remove air and moisture from a sealed section of the pipeline. As the pressure drops to the saturation vapor pressure at the current temperature, any liquid water present begins to evaporate into steam. The vacuum pump then removes the water vapor, effectively drying the pipeline. This process includes stages like deep drainage, decompression, evaporation, and continuous vacuuming. The Pipeline Bureau has successfully applied vacuum drying in major projects, such as the pipeline project in western Libya and the natural gas pipeline between Zhuhai and Zhongshan. These successes have demonstrated the effectiveness of the technique. Vacuum drying is not only environmentally friendly but also reliable, fast, and efficient. It usually takes just 4 to 5 days to complete, making it ideal for large-scale projects. Its ability to thoroughly dry all parts of the pipeline without leaving any corners untouched makes it a preferred choice. With its growing popularity, vacuum drying is becoming the standard for long-distance pipeline drying in China and beyond.

Brass Wire Mesh

Brass Wire Mesh,Antique Brass Wire Mesh,Brass Wire Mesh Screen,Fine Brass Wire Mesh

glorybest industry co.,ltd , https://www.hbglorybest.com