“…In process engineering, gas often carries numerous oil mist droplets as impurities or recyclable materials. These processes include long-distance pipeline transportation of natural gas, gas exploitation of coalbed methane, compressed air filtering, crankcase ventilation, mechanical cutting, and so on. − The droplets generally exist in the form of liquid aerosol, and they have multiple types and many sources. If these droplets cannot be removed promptly, they may result in the wearing of equipment, instrument failure, blocking of pipelines, deteriorated gas quality, faulting or the abnormal halting of compressors, and threats to the health and safety of workers. , Many methods can be used to remove droplets, including gravity settling, centrifugal separation of rotational flow, inertial separation of blades, electrostatic agglomeration, filtering separation, etc. − Coalescence filtration is one of the most effective methods at present for the removal of micro- and even nanodroplets. , Fiber materials are common coalescence filtration media.…”