Energy and economic analysis of a water scrubbing based biogas upgrading process for biomethane injection into the gas grid or use as transportation fuel
Energy and economic analysis of a water scrubbing based biogas upgrading process for biomethane injection into the gas grid or use as transportation fuel
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DOI：
10.1016/j.renene.2016.10.062
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发表时间：
2017-03-01
期刊：
影响因子：
8.7
通讯作者：
Leone, Pierluigi
中科院分区：
文献类型：
--
作者：
Rotunno, Paolo;Lanzini, Andrea;Leone, Pierluigi
这项工作描述了沼气升级过程，以取代天然气（SNG），具体称为生物甲烷，电网和车辆应用。用亨利定律描述了二氧化碳在加压水洗涤塔和汽提塔中吸收和解吸的物理过程。水洗涤器和CO2汽提塔的设计通过传输单元法，以处理沼气流，可从厌氧消化的粪肥。特别是，位于意大利中心的一个小规模的工厂的案例研究进行了分析，旨在评估电网注入和车辆应用的升级过程的能量转换效率和经济性。结果表明，在电网注入和汽车应用情况下，整个过程的效率分别为89.8%和87.3%.在对该装置的经济性分析中，确定了该装置的资本成本和运行成本，并考虑了意大利的立法框架以说明补贴的原因.结果表明，格栅喷射生物甲烷的单位生产成本为0.54（sic）/Sm-3，而汽车喷射生物甲烷的单位生产成本为0.73（sic）/Sm-3。(C)2016爱思唯尔有限公司版权所有。
This works describes the biogas upgrading process to substituted natural gas (SNG), specifically called biomethane, for grid and vehicle application. The physical processes of carbon dioxide absorption and desorption respectively in a pressurized water scrubber and a stripper are described by means of the Henry's law. Both the water scrubber and CO2 stripper columns are designed by means of the Transfer Units Method in order to handle the biogas stream that is available from an anaerobic digestion of manure.In particular, a case study of a small scale plant located in the centre of Italy is analysed with the aim to assess the energy conversion efficiency and economics of the upgrading process for grid injection and vehicle application. It is found that the whole process efficiency is respectively 89.8% in the case of grid injection and 87.3% in the case of vehicle application.Concerning with the economic analysis of the plant, the capital and operating costs of the plant are determined and the Italian legislative framework is included to account for subsidies. Results show that the unit production cost of biomethane for grid injection is 0.54 (sic)/Sm-3 while it is 0.73 (sic)/Sm-3 in the case of vehicle application. (C) 2016 Elsevier Ltd. All rights reserved.