Sustainable ammonia production through process synthesis and global optimization
Sustainable ammonia production through process synthesis and global optimization
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DOI：
10.1002/aic.16498
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发表时间：
2019-07-01
期刊：
影响因子：
3.7
通讯作者：
Pistikopoulos, Efstratios N.
中科院分区：
文献类型：
--
作者：
Demirhan, C. Doga;Tso, William W.;Pistikopoulos, Efstratios N.
目前的氨生产技术具有显著的碳足迹。在这项研究中，我们提出了一个过程综合和全局优化框架，以发现氨生产中可再生资源的有效利用。相互竞争的技术被纳入过程上层结构，其中生物质能、风能和太阳能路线与基于天然气的参考案例进行比较。采用基于确定性全局优化的分支定界算法求解大规模非凸混合整数非线性规划问题。对德克萨斯州、加利福尼亚州和爱荷华州进行了案例研究，以检查不同原料价格和可用性的影响。结果表明，合成氨生产的盈利能力对原料价格、电价以及温室气体排放限制高度敏感。在严格的75%温室气体减排条件下，发现生物质制氨路线与天然气路线具有竞争力，而风能和太阳能制氨路线需要进一步改进才能与这两条路线竞争。(3)化学工程学报，2018,35 (5):663 - 668
Current ammonia production technologies have a significant carbon footprint. In this study, we present a process synthesis and global optimization framework to discover the efficient utilization of renewable resources in ammonia production. Competing technologies are incorporated in a process superstructure where biomass, wind, and solar routes are compared with the natural gas-based reference case. A deterministic global optimization-based branch-and-bound algorithm is used to solve the resulting large-scale nonconvex mixed-integer nonlinear programming problem (MINLP). Case studies for Texas, California, and Iowa are conducted to examine the effects of different feedstock prices and availabilities. Results indicate that profitability of ammonia production is highly sensitive to feedstock and electricity prices, as well as greenhouse gas (GHG) restrictions. Under strict 75% GHG reductions, biomass to ammonia route is found to be competitive with natural gas route, whereas wind and solar to ammonia routes require further improvement to compete with those two routes. (c) 2018 American Institute of Chemical Engineers AIChE J, 65: e16498 2019