NOVELTY - A gasification system comprises two gasifying reaction units (301, 302), catalyst loading unit(s), carbonaceous material processing unit(s), heat exchanger units, acid gas removers (500), methane removal unit (600), and steam sources (700). The acid gas remover unit removes at least portion of carbon dioxide and at least portion of hydrogen sulfide from the cooled gas stream to produce acid gas-depleted gas stream comprising methane, hydrogen, and optionally carbon monoxide from the cooled gas stream.    USE - A gasification system for generating gases, particularly methane, from catalyzed carbonaceous feedstock e.g. biomass, coal and petroleum coke.    ADVANTAGE - The system has increased efficiency and component utilization; and minimizes losses in overall production capacities. The gasification reactors share unit operations to facilitate improved operating efficiency and control of the overall system.    DETAILED DESCRIPTION - A gasification system comprises two gasifying reaction units (301, 302), catalyst loading unit(s), carbonaceous material processing unit(s), heat exchanger unit(s), acid gas removers (500), methane removal unit (600), and steam sources (700). Each gasifying reaction unit independently comprises reaction chamber in which catalyzed carbonaceous feedstock and steam are converted to (i) gaseous products comprising methane, hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide and unreacted steam, (ii) unreacted carbonaceous fines, and (iii)solid char product comprising entrained catalyst; feed inlet; steam inlet; hot gas outlet; solid char product outlet; and fines remover unit. Each catalyst loading unit independently comprises loading tank, and dryer to thermally treat the catalyzed carbonaceous feedstock to reduce moisture content. The carbonaceous material processing unit supplies carbonaceous particulates to the loading tank of the catalyst loading unit. Each carbonaceous material processing unit independently comprises a receiver of carbonaceous material, and grinder. The heat exchanger unit removes heat energy from hot gas streams to generate steam and produce cooled gas stream. The acid gas remover unit removes at least portion of carbon dioxide and at least portion of hydrogen sulfide from the cooled gas stream to produce acid gas-depleted gas stream comprising methane, hydrogen, and optionally carbon monoxide from the cooled gas stream. The methane removal unit separates and recovers methane from acid gas-depleted gas stream to produce methane-depleted gas stream and methane product stream. The steam sources supplies steam to the gasifying reactor units. The system further comprises trace contaminant removal unit (800) to remove trace contaminants comprising carbon oxysulfide, mercury and hydrogen cyanide from cooled gas stream; reformer unit to convert methane product stream into syngas; methane compressor unit; carbon dioxide recovery unit; sulfur recovery unit to extract and recover sulfur from the hydrogen sulfide removed by acid gas remover unit; catalyst recovery unit to extract and recover entrained catalyst from the solid char product; gas recycle loop to recycle methane-depleted gas stream; wastewater treatment unit (1600); steam superheater; steam turbine to generate electricity; and sour shift unit to contact cooled gas stream with aqueous medium to convert carbon monoxide in the cooled gas stream to carbon dioxide.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the gasification system.    Gasifying reaction units (301, 302)    Acid gas removers (500)    Methane removal unit (600)    Steam sources (700)    Trace contaminant removal unit (800)    Waste water treatment unit (1600)