Techno-economic analysis of bio-methane production from agriculture and food industry waste
Techno-economic analysis of bio-methane production from agriculture and food industry waste
复制标题
DOI：
10.1016/j.egypro.2017.07.252
复制
发表时间：
2017-09
期刊：
影响因子：
--
通讯作者：
G. Oreggioni;M. Luberti;Matthew Reilly;M. Kirby;T. Toop;M. Theodorou;S. Tassou
中科院分区：
文献类型：
--
作者：
G. Oreggioni;M. Luberti;Matthew Reilly;M. Kirby;T. Toop;M. Theodorou;S. Tassou
厌氧发酵生产沼气是一种很有前途的能源系统脱碳技术。从厌氧消化农业和食品工业废物获得的生物气体主要由60%的CH4和40%的CO2组成。为了将生物甲烷注入到气体分配网络中，必须从生物气中去除CO2，以便注入更富的CH4流以满足气体网络要求。目前正在研究使用与CO2反应的溶剂的化学分离工艺或使用吸附剂或膜保留CO2的物理工艺，以减少相关的能源消耗，同时最大限度地去除CO2。在吸附剂为基础的过程中，研究主要集中在变压吸附（PSA）循环的优化设计。在这项工作中，生物气提质的生物甲烷生产，使用溶剂为基础的工艺和变压吸附循环的技术经济比较研究。结果表明，与溶剂型技术相比，变压吸附循环的资本成本降低了37%，平均寿命成本降低了10%。
Bio-methane production via anaerobic digestion is a promising technology for the decarbonization of the energy system. Bio-gas obtained from anaerobic digestion of farm and food industry waste is largely composed of 60% CH4and 40% CO2. For injection of bio-methane into the gas distribution network it is necessary to remove CO2from the biogas so that a richer CH4stream is injected to satisfy gas network requirements. Chemical separation processes using solvents that react with CO2or physically processes using adsorbents or membranes in which CO2is retained are currently under investigation to reduce associated energy consumption whilst maximizing CO2removal. In the case of sorbent based processes, research is mainly focused on the optimal design of pressure swing adsorption (PSA) cycles. In this work, a comparative techno-economic study of bio-gas upgrading for bio-methane production using solvent based processes and pressure swing adsorption cycles is presented. The results show that, pressure swing adsorption cycles exhibit 37% lower capital costs and 10% lower average life-time costs compared to solvent based technologies.