NOVELTY - Producing synthetic natural gas, comprises (a) gasifying a carbonaceous feedstock to produce a raw syngas, (b) cooling the raw syngas to produce a cooled raw syngas, (c) methanating the cooled raw syngas to produce a synthetic natural gas, a first liquid and heat, (d) removing a portion of any volatile components in the first liquid to produce a gaseous product and a second liquid, and (e) gasifying at least a portion of the gaseous product with the carbonaceous feedstock.    USE - The method is useful for producing synthetic natural gas.    DETAILED DESCRIPTION - Producing synthetic natural gas, comprises: either (a) gasifying a carbonaceous feedstock to produce a raw syngas, (b) cooling the raw syngas to produce a cooled raw syngas, (c) methanating the cooled raw syngas to produce a synthetic natural gas, a first liquid and heat, (d) removing a portion of any volatile components in the first liquid to produce a gaseous product and a second liquid, and (e) gasifying at least a portion of the gaseous product with the carbonaceous feedstock; or (a) above as per se, (b1) cooling the raw syngas by indirectly exchanging heat from the raw syngas to a first steam product to produce a cooled raw syngas and a second steam product, (c1) purifying the cooled raw syngas to produce a treated syngas, (d1) converting the treated syngas to synthetic natural gas, where conversion of the treated syngas further produces a first liquid and heat, (e1) producing the first steam product from the heat produced by methanating the cooled raw syngas, (f1) flash separating the first liquid to produce a gaseous product and a second liquid, (g1) gasifying at least a portion of the gaseous product with the carbonaceous feedstock, and (h1) expanding at least a portion of the second steam product to produce power. An INDEPENDENT CLAIM is included for a system for producing synthetic natural gas comprising a gasifier for gasifying a carbonaceous feedstock to produce a raw syngas, a heat exchanger for cooling the raw syngas to produce a cooled raw syngas, a methanator for methanating the cooled raw syngas to produce the synthetic natural gas, a flash separator for removing a portion of any volatile components in the first liquid to produce a gaseous product and a second liquid, and a conduit in fluid communication with the gasifier and the flash separator for introducing the gaseous product to the gasifier, where at least a portion of the gaseous product is gasified with the carbonaceous feedstock.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a system for producing synthetic natural gas.    Feedstock via line (102)    Oxidant via line (104)    Raw syngas via line (106)    Heat transfer medium via line (108)    Cooled syngas via line. (116)