The biogas engine mainly uses biogas in two specific forms: one is to drive the generator to generate electricity, supply power to the plant or the municipal power grid, and the power supply device uses electricity; The other is to directly drive the blower to save electric energy. The heat of biogas engine can provide waste heat for anaerobic mesophilic digestion of sludge. Next, the manufacturer of biogas generator sets will tell you.
① The two forms of biogas utilization have their own advantages. The former (generator) has the advantages of flexible operation compared with the latter (directly driven blower), and can generate power at any time for the use of electrical appliances in the plant.
② The mechanical efficiency of the two forms is different. The mechanical efficiency of biogas engine is generally 20%~30%. When biogas power generation is adopted, only 15%~23% of the energy in biogas is converted into effective mechanical energy. When the engine is used to directly drive the blower, its effective mechanical energy is 20%~30% of the biogas energy, which is higher than the biogas generator efficiency.
③ For biogas engines, in addition to 20%~30% of the energy in biogas is converted into mechanical energy, about 30% of the energy in biogas is converted into cooling water in the form of heat, 30% is taken away with flue gas in the form of heat, and 10% is the heat loss and vibration loss of the body itself, that is, about 60% of the energy in biogas is converted into heat.
④ In actual production, 30% of biogas energy is converted to cooling water at 90% conversion rate through effective heat exchange. In addition, 30% of the biogas energy is recycled for heating sludge with a conversion rate of 65%. The total utilization rate of the two items is 47%~56%, that is, 47%~56% of the energy in the biogas is recycled for heating sludge. Considering the energy consumption of biogas engine, the actual total utilization rate of biogas energy is 67%~86%.
In addition, the main equipment constituting the biogas power generation system includes biogas generator set, generator and heat recovery device. The biogas is supplied to the gas generator set by the gas storage tank through the desulfurizer to drive the generator connected to the biogas internal combustion engine to generate electricity. The heat in the cooling water and waste gas discharged from the biogas generator set is recycled by the heat recovery device and used as the heating source of the biogas generator. Follow us http://www.digiscrappin.com Learn more!