NOVELTY - High-efficiency marsh gas tank for generating marsh gas continuously comprises a primary reaction tank (4) and a secondary reaction tank (3).    USE - The tank is useful for generating marsh gas continuously (claimed).    ADVANTAGE - The device can feed material and generate marsh gas continuously and the raw material is reacted completely. The purity of the generated gas is high and the gas generating rate is high, uniform and stable. The cost is low. The raw material can use the organic garbage of catering industry or the city garbage. The utility model completely solves the problem of processing the garbage and stopping the phenomenon of refining edible oil illegally.    DETAILED DESCRIPTION - High-efficiency marsh gas tank for generating marsh gas continuously comprises a primary reaction tank (4) and a secondary reaction tank (3); the upper end of the primary reaction tank (4) is provided with a gas guide pipe (5) and a feed pipe (1); the gas inlet of the gas guide pipe (5) is higher than the feeding opening of the feed pipe (1); a reaction liquid outlet of the secondary reaction tank (3) is connected with a reaction liquid inlet of the primary reaction tank (4) by a pipeline through a filterer (17) and a water pump (18); a dreg liquid outlet of the primary reaction tank (4) is connected with a dreg liquid inlet of the primary reaction tank (3) by the pipeline (19) through a valve (20); the bottom of the primary reaction tank (4) is provided with an aeration device (21) and the aeration device (21) is connected with the gas outlet on the upper end of the secondary reaction tank (3) by the pipeline through the valve; the gas outlet on the upper end of the secondary reaction tank (3) is also connected with a gas guide pipe (23) and the gas guide pipe (5) of the primary reaction tank (4) and the gas guide pipe (23) of the secondary reaction tank (3) are connected with a gas storage tank (27); the gas guide pipes (5,23) are provided with valves (6,9) and the lower end of the secondary reaction tank (3) is also opened with a dreg outlet.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the high-efficiency marsh gas tank.    Feed pipe (1)    Secondary reaction tank (3)    Primary reaction tank (4)    Gas guide pipe (5,23)    Valves (6,9,15,20)    Waste dreg tank (14)    Dreg outlet (16)    Filterer (17)    Water pump (18)    Pipeline (19)    Aeration device (21)    Gas storage tank (27)