The invention relates to a horizontal stirring
methane fermentation device with a vertical cylindrical tank. The device is a cylindrical vertical
fermentation tank, wherein clapboards are longitudinally arranged in a tank body and parallel to one another; the middle part of the tank body is provided with at least one group of horizontal stirrers; a feeding hole is formed outside the tank body corresponding to the first
clapboard; a
discharge hole is formed outside the tank body corresponding to the last
clapboard, is lower than the feeding hole and is connected with a liquid delivery pipeline; an overhaul well is arranged outside the semispherical top of the tank body; and a gas guide
pipe and a gas
exhaust pipe are arranged on the side wall of a shaft of the overhaul well. The device effectively solves the problems of
miniaturization, low concentration, high construction cost, high
operating cost, incomplete reaction, abnormal gas production in winter and the like of the conventionalmethane tank, effectively solves the problems of
direct current and non-uniform mixing, is high in gas
production rate, cannot be incrusted, is low in
operating cost and construction cost, and is particularly suitable for the large-scale industrial, intensive and commercial production of
methane.