Study on Solid Adsorption Desulfurization on Biogas and Hot-Water Heating System for Piglet

• Main Authors: Min-Wei Wang, 王旻位
• Other Authors: Cheng-Chang Lien
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/wj28w8

碩士 === 國立嘉義大學 === 生物機電工程學系研究所 === 105 === Biogas is a potentially renewable source of energy that contains hydrogen sulfide in its constituents that can cause corrosion of metal equipment and must be removed before biogas utilization. In the aspect of biogas desulfurization, this study designed a solid desulfurization unit with iron oxide particles as the desulfurizer to change the biogas flow rate and the height of the iron oxide particles in the desulfurization column. The biogas desulfurization test was carried out to study the removal of hydrogen sulfide effectiveness. The results showed that the average desulfurization efficiency was 95.16% when the biogas flow rate was 25 ℓ / min, the iron oxide particle height was 15.3 cm and the desulfurization time was 70 min. At the same time, Computational fluid dynamics (CFD) was used to simulate the desulphurization column, and the actual desulfurization status of the iron oxide was compared with the CFD vector field. It was proved that the CFD prediction simulation results could meet the fluid condition in the reaction column, which would help to design and improve solid state desulfurization equipment. In the use of biogas, a set of biogas combustion hot water piglet insulation system to pig farm in the nursery was developed. The thermal energy of biogas combustion used in nursery piglet insulation needs. Biogas first washing by desulphurization, and then into the biogas combustion furnaceburner to heat in the water, through the pipeline into the insulation board, it can achieve piglet insulation when piglets lie on it,. The results showed that the feed desity of piglets was 0.57 m2/pig and the flow rate of hot water was 43 ℓ / min. when the hot water temperature was 40 ℃, it was close between the average surface temperature of the insulation board of 36.2 ℃ and the temperature of the epidermis of the piglets of 35.1 ℃. It was suitable insulation temperature for piglets, and the results also show that the concentration of carbon dioxide (CO2) in the homes decreases with the increase of the ventilation rate, and the air quality can be improved under the ventilation rate of 14.3 and 20.6 Air change per hour (ACH).