Method for removal of a foulant from a carrier gas in a single vessel using cryogenic liquids

A method for removal of a foulant from a carrier gas, the method comprising:

• providing a solids conveyance device that spans a vessel, the vessel comprising an enclosed section and a filtering section, wherein:
• the enclosed section feeds the filtering section, has a non-permeable exterior wall, and comprises a liquid inlet and a gas inlet;
• and,
• the filter section is fed by the enclosed section, has a permeable exterior wall, and a solids outlet;
• providing a cryogenic liquid to the liquid inlet of the enclosed section;
• providing the carrier gas containing the foulant to the gas inlet of the enclosed section, wherein the foulant condenses, dissolves, or desublimates into the cryogenic liquid, forming a cryogenic slurry and a foulant-depleted carrier gas entrained in the cryogenic slurry;
• and,
• causing the solids conveyance device to advance the cryogenic slurry into the filtering section, wherein a warmed cryogenic liquid is removed from the cryogenic slurry through a portion of the permeable exterior wall, the foulant-depleted carrier gas is removed from the vessel through a path comprising a portion of the permeable exterior wall, the solids outlet, or a combination thereof, and a solid foulant is passed out of the solids outlet;
• whereby the foulant is removed from the carrier gas.