NOVELTY - A gasification system to form gases from catalyzed carbonaceous feedstock (31, 32, 33, 34) comprises four separate gasifying reactors (301, 302, 303, 304) for gasifying feedstock in presence of alkali metal catalyst into gaseous product, e.g. methane. The reactor is supplied with the feedstock form single/separate catalyst loading and/or feedstock preparation unit operations (101, 102). The hot gas streams from gasification reactor is purified by their combination at heat exchanger (401, 402, 403, 404), acid gas removal (501, 502) and methane removal unit (601, 602) operations.    USE - For generating gases, preferably methane which is product stream of pipeline-quality natural gas, from catalyzed carbonaceous feedstock (claimed).    ADVANTAGE - The system is an improved gasification system with increased efficiency and component utilization, and minimizes losses in overall production capacities. The system has at least four gasification reactors which share at least one unit operation to facilitate, e.g. routine maintenance or repair while maintaining systems operations, with improved operating efficiency and control of the overall system.    DETAILED DESCRIPTION - A gasification system to generate gases from catalyzed carbonaceous feedstock (31, 32, 33, 34), comprises four gasifying reactor units (301, 302, 303, 304); four catalyst loading units (201, 202, 203, 204) comprising loading tank to receive carbonaceous particulates (21, 22) and to load catalyst onto the particulates to form the catalyzed carbonaceous feedstock, and a dryer to thermally treat the catalyzed feedstock to reduce moisture content; four carbonaceous material processing units to supply the carbonaceous particulates to the loading tank of the catalyst loading unit, and comprises receiver to receive and store carbonaceous material, and grinder in communication with the receiver, to grind the carbonaceous material into the particulates; four heat exchanger units (401, 402, 403, 404); four acid gas remover units (501, 502); four methane removal units (601, 602); and single steam source (700) to supply steam to the steam inlets of the gasifying reactor units. Each gasifying reactor unit comprises reaction chamber to covert catalyzed carbonaceous feedstock and steam to gaseous products, e.g. methane, un-reacted carbonaceous fines and solid char product comprising entrained catalyst; feed inlet to supply the catalyzed carbonaceous feedstock into the reaction chamber; steam inlet to supply steam (35) into the reaction chamber; hot gas outlet to exhaust a hot first gas stream out of the reaction chamber, the hot first gas stream comprising the gaseous products; char outlet to withdraw the solid char product from the reaction chamber; and fines remover unit to remove at least a portion of the un-reacted carbonaceous fines that optionally entrained in the hot first gas stream. The catalyst loading units supplies the catalyzed carbonaceous feedstock to the feed inlets of the gasifying reactor units. The heat exchanger units remove heat energy from the hot first gas streams (41, 42, 43, 44) from the gasifying reactor units to generate steam and produce four cooled first gas streams (51, 52, 53, 54). The acid gas remover units removes at least a portion of the carbon dioxide and at least a portion of the hydrogen sulfide from the cooled first gas stream, to produce acid gas-depleted gas stream of methane, hydrogen and optionally carbon monoxide from the cooled gas stream. The acid gas remover unit removes at least a portion of the carbon dioxide and at least a portion of the hydrogen sulfide from the cooled first gas stream, to produce acid gas-depleted gas stream (61, 62) comprising at least a portion of the methane, at least a portion of the hydrogen and optionally, at least a portion of the carbon monoxide from the cooled first gas stream. The methane removal unit separates and recovers methane from the acid gas-depleted gas stream to produce methane-depleted gas stream and methane product stream (71, 72) that comprises at least a portion of the methane from the acid gas-depleted gas stream. When only single, two, three or four catalyst loading units are present, then single; single or two; single, two or three; or single, two, three or four carbonaceous material processing units are present respectively. When only single, two, three or four heat exchanger units are present, then single; single or two; single, two or three; or single, two, three or four acid gas remover units are present respectively. When only single, two, three or four acid gas-depleted streams are present, then single; single or two; single, two or three; or single, two, three or four methane removal units are present respectively. The system additionally comprises trace contaminant removal units, ammonia removal and recovery units, and sour shift units.    DESCRIPTION OF DRAWING(S) - The figure shows a diagram of the gasification system.    Carbonaceous feedstock (10)    Carbonaceous particulate (21 and 22)    Steam (35)    Catalyzed carbonaceous feedstock (31, 32, 33, 34)    First, second, third and fourth hot first gas streams (41, 42, 43, 44)    First, second, third and fourth cooled first gas streams (51, 52, 53, 54)    First and second acid gas-depleted gas streams (61, 62)    First and second methane product streams (71, 72)    First and second feedstock operations (101, 102)    First, second, third and fourth catalyst loading units (201, 202, 203, 204)    First, second, third and fourth gasification reactors (301, 302, 303, 304)    First, second, third and fourth heat exchanger units (401, 402, 403, 404)    First and second acid gas removal units (501, 502)    First and second methane removal units (601, 602)    Single steam source (700)