| 摘要 |
<p>PURPOSE:To utilize the fermentaion heat availably as a heat source for recovering methane gas by a method wherein a heat take-out pipe for taking out the fermentation heat to an organic waste material receiving tank and the fermentation heat recovered through a heat exchanger is utilized in the heating of a digestion tank. CONSTITUTION:An organic waste material is thrown into an received in an org. waste material receiving tank 1 and the fermentation heat formed by fermenting an org. waste material is sent into a pressure tank 9 from a suction pipe 5 through a strainer tank 7 for removing dusts. The fermentation heat pressurized in this pressure tank 9 is recovered by a heat exchanger 11 and, thereafter, taken out into the digestion tank 20 from a heat take-out pipe 19 and utilized in heating the digestion tank 20. Subsequently, methane gas is recovered from the digestion tank 20 and utilized availably. In the digestion tank 20, an organic substance is warmed to about 40 deg.C by using an enzyme as a catalyst and decomposed and the generated methane gas is recovered by a recovery apparatus 21.</p> |
