文献类型：期刊文献

英文题名：Thermodynamic and Economic Evaluation of a Novel Green Methanol Poly-Generation System

作者：Ye, Qiliang[1];Bao, Yipeng[1];Pan, Hui[2];Liu, Yulan[1];Yuan, Peiqing[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China

年份：2023

卷号：11

期号：1

外文期刊名：PROCESSES

收录：;EI(收录号：20241515857562);WOS:【SCI-EXPANDED(收录号:WOS:000927428700001)】；

基金：This research received no external funding.

语种：英文

外文关键词：green methanol; thermo-economic analysis; CO2 capture; process simulation

摘要：Methanol is considered a sustainable alternative energy source due to its ease of storage and high-octane rating. However, the conventional methanol production process is accompanied by resource consumption and significant greenhouse gas emissions. The electrochemical reaction of electrochemically reacted hydrogen (H-2) with captured carbon dioxide (CO2) offers an alternative route to methanol production. This paper presents a new green poly-generation system consisting of a parabolic trough solar collector (PTC) unit, an organic Rankine cycle (ORC) unit, a CO2 capture unit, an alkaline electrolysis unit, a green methanol synthesis and distillation unit, and a double-effect lithium bromide absorption refrigeration (ARC) unit. The system mainly produced 147.4 kmol/h of methanol at 99.9% purity, 283,500 kmol/h of domestic hot water, and a cooling load of 1341 kW. A total 361.34 MW of thermal energy was supplied to the ORC by the PTC. The alkaline electrolysis unit generated 464.2 kmol/h of H-2 and 230.6 kmol/h of oxygen (O-2) while providing H-2 for methanol synthesis. Thermodynamic and economic analysis of the system was carried out. The energy and exergy efficiency of the whole system could reach 76% and 22.8%, respectively. The internal rate of return (IRR) for the system without subsidies was 11.394%. The analysis for the methanol price showed that the system was economically viable when the methanol price exceedsed$363.34/ton. This new proposed poly-generation system offers more options for efficiently green methanol production.