Bringing value to the chemical industry from capture, storage and use of CO2: A dynamic LCA of formic acid production
Bringing value to the chemical industry from capture, storage and use of CO2: A dynamic LCA of formic acid production
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DOI：
10.1016/j.scitotenv.2019.01.395
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发表时间：
2019-05-01
影响因子：
9.8
通讯作者：
Dodds, Paul E.
中科院分区：
文献类型：
--
作者：
Aldaco, Ruben;Butnar, Isabela;Dodds, Paul E.
化工行业的低碳选择包括从化石能源转向可再生能源，采用新的低碳生产工艺，沿着改造现有工厂，利用碳捕获技术（CCU技术）或碳储存技术（CCS）。在本文中，我们联合收割机的动态生命周期评估（d-LCA）与经济分析，探讨了潜在的过渡到低碳生产甲酸。我们提出了新的方法，使早期的技术，环境和经济评估的甲酸生产的电化学还原CO2（CCU），并比较这种生产路线的常规合成途径和储存CO2的地质封存（CCS）。CCU和CCS在特定情景下都能减少碳排放，但结果的不确定性表明，需要进一步研究和扩大验证，以澄清与传统工艺途径相比的相对减排量。CCU和CCS系统之间存在资源安全性、成本和排放之间的权衡。正如预期的那样，CCS技术比CCU情景和传统工艺产生更大的CO2排放量减少。然而，与CCS系统相比，CCU具有更好的经济潜力和更低的化石消耗，特别是在由可再生电力供电时。可再生能源在化学工业中的整合具有重要的气候缓解作用，特别是对于具有高电能和热能需求的工艺。(C)2019 Elsevier B. V.版权所有。
Low carbon options for the chemical industry include switching from fossil to renewable energy, adopting new low-carbon production processes, along with retrofitting current plants with carbon capture for ulterior use (CCU technologies) or storage (CCS). In this paper, we combine a dynamic Life Cycle Assessment (d-LCA) with economic analysis to explore a potential transition to low-carbon manufacture of formic acid. We propose new methods to enable early technical, environmental and economic assessment of formic acid manufacture by electrochemical reduction of CO2 (CCU), and compare this production route to the conventional synthesis pathways and to storing CO2 in geological storage (CCS). Both CCU and CCS reduce carbon emissions in particular scenarios, although the uncertainty in results suggests that further research and scale-up validation are needed to clarify the relative emission reduction compared to conventional process pathways. There are trade-offs between resource security, cost andemissions between CCU and CCS systems. As expected, the CCS technology yields greater reductions in CO2 emissions than the CCU scenarios and the conventional processes. However, compared to CCS systems, CCU has better economic potential and lower fossil consumption, especially when powered by renewable electricity. The integration of renewable energy in the chemical industry has an important climate mitigation role, especially for processes with high electrical and thermal energy demands. (C) 2019 Elsevier B.V. All rights reserved.