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沼气是一种优质可燃气体,又是重要的化工原料。沼气的主要成份是甲烷,占60～70%,其次是二氧化碳,还有少量的氢气、氮气、巯化氢和一氧化碳。甲烷(CH_4)是一种无色、无味的气休,难溶于水。它完全燃烧时,火焰呈淡兰色,最高温度可达1400℃。1米~3甲烷完全燃烧时可放出8500～9500大卡的热量。农村的户用沼气一般含甲烷50～60%,所以1米~3沼气完全燃烧时可放出5000～6000大卡的热量,可以烧开70多斤开水;可以做五口之家一天的饭菜;可以点燃一盏亮度相当于60瓦电灯光的沼气灯照明6小时,还可以发1.5度电。一个五口人的农户,建一个6～10米~3的沼气池,在正常情况下,一昼夜可产沼气
Biogas is a kind of high quality combustible gas, which is also an important chemical raw material. The main component of biogas is methane, accounting for 60-70%, followed by carbon dioxide, but also a small amount of hydrogen, nitrogen, hydrogen sulphide and carbon monoxide. Methane (CH_4) is a colorless, odorless gas off, insoluble in water. When it is completely burned, the flame is light blue and the maximum temperature can reach 1400 ℃. 1 m ~ 3 methane combustion can be released 8500 ~ 9500 kcal of calories. Household methane in rural areas generally contain methane 50 ~ 60%, so 1 m ~ 3 biogas can be completely released when the release of 5000 ~ 6000 kcal of heat, you can boil more than 70 pounds of boiling water; can do five meals a day meals; You can ignite a brightness equivalent to 60 watts of electricity gas lamp lighting 6 hours, you can also send 1.5 kWh electricity. A five-person farmer, to build a 6 to 10 m ~ 3 digesters, under normal circumstances, a day can produce biogas