| abstract |
A distributed Biogas Combined Heat and Power Generator can provide automatically hot water and electricity. Since biogas is produced from human, animal, kitchen and agriculture's wastes, it is a short term recycled product from the photosynthesis of C02, and has a net zero carbon emission. The sulfur compounds in the biogas can be removed by the following steps: (1 ) converting all sulfur compounds into H2S by the hydrogen produced from the biogas over Pt group metal catalysts; (2) adsorbing the H2S at high temperature by the regenerate Pt group metal catalyst and adsorbents. The desulfurized biogas is further converted by an ATR/CPO reformer or a steam generating reformer to produce various reformates, which can be connected to a downstream IC engine/gas turbine, and/or a steam turbine to drive electric generators for generating electricity. The hot reformate and the exhaust gases can be cooled in heat exchangers to produce hot-water/hot-air. |