The maritime industry is beginning to show significant interest in using ammonia as a "bunker fuel," a sustainable alternative to the highly polluting heavy fuel oil (HFO) currently used in ships across the world.
In recent months, a firm of naval architects and a new maritime think tank have both been evaluating ammonia as a fuel. This includes a road map for future research, and collaborations for a demonstration project that will allow them to design and build a freight ship "Powered by NH3."
The Institute for Sustainable Process Technology (ISPT) recently published a detailed analysis of three business cases for producing renewable ammonia from electricity: Power to Ammonia. The feasibility study concludes that, in the near term, ammonia production using clean electricity will likely rely on a combination of two old-established, proven technologies: electrolysis and Haber-Bosch (E-HB). To reach this conclusion, however, the study also assessed a range of alternative technologies, which I summarize in this article.
The Power-to-Ammonia feasibility study includes an assessment of the costs and benefits of producing ammonia from renewable energy at OCI Nitrogen's existing production site in Geleen.
Of all the companies who joined forces in the Power-to-Ammonia project, OCI is the only ammonia producer. Its business case for making carbon-free ammonia is especially interesting therefore: not just because of the company's deep understanding of the ammonia market and available technologies, but also because it faces corporate exposure to the financial, operational, and social risks of relying upon a fossil-fueled technology in a carbon constrained future.
The Institute for Sustainable Process Technology recently published a feasibility study, Power to Ammonia, looking at the possibility of producing and using ammonia in the renewable power sector. This project is based in The Netherlands and is led by a powerful industrial consortium.
I wrote about the feasibility study last month, but it deserves closer attention because it examines three entirely separate business cases for integrating ammonia into a renewable energy economy, centered on three site-specific participants in the study: Nuon at Eemshaven, Stedin at Goeree-Overflakkee, and OCI Nitrogen at Geleen.
Over the next few years, the group intends to build pilot projects to develop and demonstrate the necessary technologies. Next month, however, these projects will be an important part of the Power-to-Ammonia Conference, in Rotterdam on May 18-19.
This article is the first in a series of three that aims to introduce each business case.
Most of the ammonia energy projects I write about are in the research and development phase but, as I've said before, technology transfer from the academic lab to commercial deployment is moving swiftly - especially in Japan.
Last week, Nikkei Asian Review published two articles outlining plans by major engineering and power firms to build utility-scale demonstrations using ammonia as a fuel for electricity generation. Both projects aim to reduce the carbon intensity of the Japanese electrical grid, incrementally but significantly, by displacing a portion of the fossil fuels with ammonia. The first project will generate power using an ammonia-coal mix, while the second will combine ammonia with natural gas.
I recently wrote about a vast future market for merchant ammonia: transporting carbon-free energy from Australia's deserts to Japan's electricity grid.
Now, however, it is clear that Japan could face international competition for Australia's solar-ammonia resources. Jeff Connolly, CEO of Siemens Pacific, wrote last month about his ambitions for ammonia as an energy export commodity.
The American Institute of Chemical Engineers (AIChE) will present a Webinar on December 21 on "Distributed Ammonia Synthesis." The presenter will be Edward L. Cussler, Distinguished Institute Professor at the Chemical Engineering and Materials Science Department of the University of Minnesota.
Distributed ammonia synthesis is one focus related to ammonia energy at the University of Minnesota - but just one. In fact, UMinn is the locus of a unique and globally significant collection of research efforts that promise to have significant impacts in the ammonia industry and the broader energy sector.
Eddie Sturman, noted inventor and co-founder of Sturman Industries, has been developing ammonia internal-combustion-engine (ICE) technology for several years – "at least six, maybe more." At the 2016 NH3 Fuel Conference, he provided the most in-depth look so far at the results of Sturman Industries' R&D program. Specifically, his talk featured a dual-fuel compression ignition engine powered by a combination of diesel fuel and ammonia.
A common concern with ammonia fuel is that NOx emissions will be too high to control. However, in new research from Turkey, USA, and Japan, presented at this year's NH3 Fuel Conference in September 2016, two things became clear.
First, NOx emissions can be reduced to less than 10ppm by employing good engineering design and exploiting the chemical properties of ammonia, which plays a dual role as both the fuel and the emissions-cleanup agent.
Second, the deployment of ammonia-fueled turbines for power generation is not only feasible, but actively being developed, with demonstration units running today and improved demonstration projects currently in development.
In April 2016, Siemens AG announced that it will construct a plant at the Rutherford Appleton Laboratory in Oxford to demonstrate the production of ammonia in an electrochemical reactor. The technology is seen as a facilitator of the use of ammonia synthesis as a method for storing renewably generated electricity. It involves lower pressures and temperatures than conventional synthesis with the Haber Bosch process. The project will test two different electrolyte chemistries using its 30 kilowatt electrochemical reactor.