畜牧場沼氣純化發電系統研發

Abstract

台灣現有畜牧場廢棄物衍生出龐大沼氣，是為快速可用之再生能源，然而受限於沼氣純度與後端發電技術，使得此生質能源無法被高度利用。因此本計畫以去除沼氣中會嚴重影響發電之硫化氫來提高直接發電效率為目標，將純化後所產生的甲烷進行發電與效益評估。在本計畫中將設計一具生物除硫反應器，藉由篩選出微生物能代謝硫化物，將沼氣內的硫化氫濃度由處理前的1000~3000ppm降低至100ppm以下，處理後之沼氣可做為低熱值燃料。本研究團隊將利用過去執行「農業生物技術國家型計畫」硫化氫減除之成果，並配合機械領域專長研究人員，在未來兩年發展出一套生物除硫及沼氣純化發電系統。因目前生物沼氣純化技術，國內無相似程序或系統被應用，發展這些技術將可提升沼氣利用及發電技術。

The utilization of renewable energy and development of new energy sources are government policy. A large amount of biogas derived from wastes is an excellent resource at present. However, the application of bioconversion energy is restricted by low purity of biogas and the techniques for electricity generation. In this project, we will design a biofilter that can eliminate H2S concentration from 1000~3000 ppm to less than 100 ppm. The treated marsh gas is a low heating value biogas fuel for burning (the low heating value of the fuel is about 5.2 MJ/m3). After H2S is removed, biogas can be transfered to the power generation system. The goal of the project is to upgrade the utilization efficiency of biogas by H2S removal and improve the power generation rate.