| abstract |
A biomass system is constructed at a low cost with a low initial investment, and a natural heat source is used to increase the energy efficiency of operation, so that the entire system can obtain a surplus heat amount. A wet biomass system includes a fermenter 13 that generates gas from wet biomass, a boiler 14 and a generator 15 that generate electricity and heat from the gas, and a heat pump 5 that is driven by electricity from the generator 15. Have. The heat of the heat pump 5 is used for sterilization of wet biomass in the sterilization tanks 16 and 18 and heating of wet biomass in the fermentation tank 13. In the digestive juice 17 sent from the digestive fluid storage tank 19, only the water is frozen by the cold heat of the heat pump 5 by the freeze concentration means 21, and the concentrated digestive fluid is stored as the liquid fertilizer 20. The digestive fluid storage tank 19 can be downsized, and the construction cost of the facility is lower than before. The transportation cost of concentrated liquid fertilizer is also cheaper. Surplus heat can be obtained as a whole system, and electricity etc. can be sold outside. [Selection] Figure 3 |