Design and simulation of a new cascaded ammonia synthesis system driven by renewables

2020 ◽  
Vol 40 ◽  
pp. 100725
Author(s):  
H. Ishaq ◽  
I. Dincer
Keyword(s):  
Ammonia Synthesis ◽  
Synthesis System

“Catalytic Engine” NOx Reduction of Diesel Engines with New Concept Onboard Ammonia Synthesis System

1992 ◽  
Author(s):  
Toshio Nakahira ◽  
Kinji Tsujimura ◽  
Toshiaki Kakegawa ◽  
Ken-ichi Aika ◽  
Masaaki Takiguchi ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Ammonia Synthesis ◽  
Nox Reduction ◽  
Synthesis System

Calculation of partial molar volume of components in supercritical ammonia synthesis system

2008 ◽  
Vol 3 (4) ◽  
pp. 489-494
Author(s):  
Cunwen Wang ◽  
Chuanbo Yu ◽  
Wen Chen ◽  
Weiguo Wang ◽  
Yuanxin Wu ◽  
...  
Keyword(s):  
Molar Volume ◽  
Partial Molar Volume ◽  
Ammonia Synthesis ◽  
Synthesis System ◽  
Supercritical Ammonia

TiO2 doped HKUST-1/CM film in the three-phase photocatalytic ammonia synthesis system

2021 ◽  
Author(s):  
Weiwen Wang ◽  
Zhengnan Ji ◽  
Delu Zhang ◽  
Pengxia Sun ◽  
Jihai Duan
Keyword(s):  
Ammonia Synthesis ◽  
Synthesis System ◽  
Three Phase

Design of an Ammonia Synthesis System for Producing Supercritical Steam in the Context of Thermochemical Energy Storage

2015 ◽  
Author(s):  
Chen Chen ◽  
Keith Lovegrove ◽  
H. Pirouz Kavehpour ◽  
Adrienne S. Lavine
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Power Plants ◽  
Ammonia Synthesis ◽  
Storage System ◽  
Homogeneous Model ◽  
Packed Bed ◽  
Reactor Performance ◽  
Synthesis System

Concentrating solar power plants typically incorporate thermal energy storage, e.g. molten salt tanks. The broad category of thermochemical energy storage, in which energy is stored in chemical bonds, has the advantage of higher energy density as compared to sensible energy storage. In the ammonia-based thermal energy storage system, ammonia is dissociated endothermically as it absorbs solar energy during the daytime. The stored energy can be released on demand (for electricity generation) when the supercritical hydrogen and nitrogen react exothermically to synthesize ammonia. Using ammonia as a thermochemical storage system was validated at Australian National University (ANU), but ammonia synthesis has not yet been shown to reach temperatures consistent with the highest performance modern power blocks such as a supercritical steam Rankine cycle requiring steam to be heated to ∼650°C. This paper explores the preliminary design of an ammonia synthesis system that is intended to heat steam from 350°C to 650°C under pressure of 26 MPa. A two-dimensional pseudo-homogeneous model for packed bed reactors previously used at ANU is adopted to simulate the ammonia synthesis reactor. The reaction kinetics are modeled using the Temkin-Pyzhev reaction rate equation. The model is extended by accounting for convection in the steam to predict the behavior of the proposed synthesis reactor. A parametric investigation is performed and the results show that heat transfer plays the predominant role in improving reactor performance.

Design and optimization of an ammonia synthesis system for ammonia-based solar thermochemical energy storage

Solar Energy ◽  
2018 ◽  
Vol 159 ◽  
pp. 992-1002 ◽  
Author(s):  
Chen Chen ◽  
Keith M. Lovegrove ◽  
Abdon Sepulveda ◽  
Adrienne S. Lavine
Keyword(s):  
Energy Storage ◽  
Ammonia Synthesis ◽  
Synthesis System ◽  
Design And Optimization ◽  
Solar Thermochemical
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