NATURAL GAS FILTERING DEVICE

摘要

A gas filtering apparatus comprising a filter tank, baffles, a porous filter bed and means for collecting filtered impurities is provided. The filter tank has an inlet and an outlet for gas flow through the tank from the inlet to the outlet, baffles within the tank at least a majority of which the gas must flow through and positioned such that the baffles deflect the gas flow, and, a porous filter bed within the tank positioned such that the gas must flow through the filter bed. The means for collecting the filtered impurities preferably comprises a holding tank having an inlet and an outlet drainage pipe connecting the holding tank to the filter tank, and a means for selectively obstructing the holding tank outlet. The apparatus of the invention may be used to filter both moisture such as water vapour and solid particulate impurities such as sand, wax and dirt from natural gas.