NOVELTY - A synthetic natural gas production plant includes a first primary reactor (210) to receive a first portion of feed gas, and a second primary reactor (220) to receive a combination of second feed gas portion and first primary reactor effluent. A cooler (264) receives and cools second primary reactor effluent to condense water. A separator (280) separates water from the second primary reactor effluent. A recycle conduit introduces a first portion of partially dried effluent to the first primary reactor. An adiabatic trim reactor receives a second portion of partially dried effluent.    USE - For producing synthetic natural gas.    ADVANTAGE - The production plant can be run more efficiently and at reduced capital costs by including a separator for removing water from the trim reactor feed and recycle stream. This allows for increased trim reactor inlet temperature and reduced catalyst volume. By removing water from the trim reactor feed and recycle stream, overall yield of methane is increased and isothermal trim reactor can be replaced with less expensive adiabatic trim reactor.    DETAILED DESCRIPTION - A synthetic natural gas production plant includes a syngas source to provide a feed gas having hydrogen (H) to carbon monoxide (CO) ratio of 2.5-3.5. First and second primary reactors are coupled to the syngas source so that a first portion of feed gas is delivered to the first primary reactor and a second portion of feed gas is delivered to the second primary reactor. The first primary reactor is coupled to the second primary reactor so that a combination of second feed gas portion and first primary reactor effluent is fed into the second primary reactor. A cooler receives and cools an effluent of second primary reactor to condense water in the effluent. A separator is coupled to the second primary reactor to separate water from the second primary reactor effluent to produce partially dried effluent. A recycle conduit is coupled to the separator and first primary reactor so that a first portion of partially dried effluent is fed to the first primary reactor. An adiabatic trim reactor is coupled to the separator to receive a second portion of partially dried effluent. An acid gas removal unit removes acid gas (preferably hydrogen sulfide) and contaminants (e.g. COS, hydrogen cyanide, ammonia, organic thiol, and/or metal carbonyl) from the feed gas.    An INDEPENDENT CLAIM is included for synthetic natural gas production.    DESCRIPTION OF DRAWING(S) - The figure shows a synthetic natural gas production plant.    First primary reactor (210)    Second primary reactor (220)    Steam generators (260, 262)    Cooler (264)    Separator (280)