Methods for treating wet gas
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The pressure of the natural gas at the gas source is 2.5–3.5 MPa; it is wet gas. The demand at the point of use is 1300 Nm3/h. The distance between the gas source and the point of use is approximately 600 meters, and pipeline transportation is planned to be used for delivering the gas. The natural gas delivered needs to be pressure-regulated. Since this project is located in the north where the weather is cold, there is a risk that the natural gas could freeze, thereby blocking the pressure-regulation equipment. Natural gas must be dehydrated. How should the water be treated? I also want to ask if it’s possible to avoid the dehydration process
This post was last edited by yimu21 on 2010-12-15 at 18:12. Note: LZ must have applied the wrong pressure; 2.5–3.5 MPa is high pressure class A, and your project likely doesn’t require high-pressure gas supply. It should be 0.25-0.35MPA, right? The definition of wet gas does not refer to a high water content; rather, it denotes natural gas with a methane content of less than 90%, and an alkane content such as that of ethane and propane of over 10%. The pressure is 0.25–0.35 MPA, which falls within the category of medium-pressure gases; therefore, dehydration is not necessary. This step is generally carried out by LNG production companies. It can be directly transported underground using PE pipes, and then supplied to users after pressure regulation. Make sure the pipes are buried below the freezing line; installing a condensate tank will suffice.