- 期刊
自製沼氣固態脫硫吸附劑研製與測試之研究
Study Fabrication and Testing of Self-made Solid Desulfurization Adsorbent for Biogas
摘要
沼氣使用前未經脫硫處理作業將會對環境、機件設備等產生腐蝕，而限制沼氣發展。應用硫化氫（H_2S）可與氫氧化鐵（Fe（OH）_3）作用生成硫化鐵（Fe_2S_3）之特性，本研究選擇固體吸附方法進行沼氣中硫化氫（H_2S）的脫除，將自行研製之球型氧化鐵顆粒脫硫劑，以自然堆疊方式置入壓克力脫硫反應槽體內，移置沼氣脫硫裝置到養豬場進行實地測試；改變固態脫硫柱中的顆粒堆疊高度、球粒粒徑及沼氣流量，探討沼氣脫硫效率，進一步分析沼氣脫硫與球粒粒徑的反應關係。由試驗結果顯示自製脫硫顆粒其硫化氫去除率隨著沼氣流量、球粒粒徑及脫硫時間的增加而減少，沼氣隨著氧化鐵顆粒堆疊高度的增加其脫硫反應時間越長，會有較佳的硫化氫去除效果，但是隨著脫硫時間的增加，氧化鐵脫硫劑其粒徑球體表面反應面積有限，且因硫化鐵反應物的阻蔽而使脫硫效果趨於飽合狀態。
並列摘要
Biogas that is not desulfurized before use cause corrosion to the environment and mechanical equipment, thus limiting the development of biogas. By reacting hydrogen sulfide (H_2S) with iron hydroxide (Fe(OH)_3) to produce iron sulfide (Fe_2S_3), this study selects a solid adsorption method to remove hydrogen sulfide (H_2S) from biogas and develop spherical iron oxide particles as the desulfurizer, which was installed in an acrylic desulfurization reaction tank by natural stacking. Then the biogas desulfurization device was moved to a pig farm for field testing. By varying the particle stacking height in the solid desulfurization column, particle size and biogas flow rate, the efficiency of biogas desulfurization was investigated and the reaction relationship between biogas desulfurization and particle size was analyzed further. The test results show that the removal rate of hydrogen sulfide for self-made desulfurization particles decreases with the increase of biogas flow rate and granule particle size, desulfurization time. As the stacking height of iron oxide particles increases, longer desulfurization reaction time of biogas was associated with the better removal of hydrogen sulfide, but the surface reaction area of the iron oxide desulfurizer particle was limited, and the desulfurization effect reached saturation state due to the obstruction of the iron sulfide reactant.