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Presentation

Electrochemical Ammonia Synthesis from Water and Nitrogen using Solid State Ion Conductors

Jong Hoon JooChung-Yul YooSi Young JangJi Haeng YuHa-Na JeongChan Hee HyeongHyung Chul YoonJong-Nam Kim

Besides its current applications, ammonia (i.e. carbon-free fuel) could play important roles in preparing for oil depletion and coping with climate change since it releases only nitrogen and water when burned. Ammonia contains 17.6wt% of hydrogen and has significant advantages over hydrogen in storing and transporting energy. The current industrial ammonia production is based on the Haber-Bosch process, which has the drawbacks of high greenhouse gas emission, reaching up to 2.16 kg CO2/kg NH3 and large energy consumption over 30 GJ/ton NH3 resulting from the production of the reactants and the high pressure-high temperature synthesis of ammonia. In order to…

Ammonia as an Energy Carrier for Renewable Energy
Presentation

Ammonia as an Energy Carrier for Renewable Energy

Ken-ichi Aika

At present, ammonia is mostly formed through reforming of natural gas (CH4). A 1,000 ton per day plant is said to consume about 35 GJ of natural gas to produce 1 ton of ammonia (22.5 GJ of enthalpy). About 50% of extra energy is wasted. If 1 ton ammonia is produced through water electrolysis, 22.5 GJ of electricity is necessary theoretically. Here again, extra electric energy must be wasted. The author discusses roughly how the efficiency depends upon the process size and the renewable energy cost.

Ammonia as a Motor Vehicle Engine Fuel from a Weights and Measures Perspective
Presentation

Ammonia as a Motor Vehicle Engine Fuel from a Weights and Measures Perspective

Allan Morrison

California Law requires: — All motor vehicle fuel must have a consensus organization fuel quality standard. In absence of such a standard, a user may obtain a “Developmental Engine Fuel Variance” for the purpose of developing a consensus organization standard. — Devices that measure for purposes of charging are type approved for product delivered and sealed by a Weights and Measure official. — Fuel dispensers are labeled in accordance to State and Federal requirements. — Unit of sale be in dollars per gallon or liter. The author provides an overview of these areas and information on how to obtain a…

Making and Treating NOx formed in NH3 Engines
Presentation

Making and Treating NOx formed in NH3 Engines

Patrick Desrochers

Ammonia has real promise as a green renewable fuel; however its use is not without some of the drawbacks endemic to high temperature combustion processes. Chief among them is the potential for NOx formation in nitrogen-rich oxidizing environments. Nitric and nitrous oxides are prime culprits that plague both entrenched hydrocarbon internal combustion technology but also emerging technologies like ammonia-as-a-fuel. Nitric oxide is implicated in photochemical ground-level ozone production in urban areas. Nitrous oxide is its own double-edged environmental sword, being both a potent tropospheric green-house gas as well as a principle agent in renewed stratospheric ozone-depletion (Science 2009, v326, p.…

Ammonia Production Using Wind Energy: An Early Calculation of Life Cycle Carbon Emissions and Fossil Energy Consumption
Presentation

Ammonia Production Using Wind Energy: An Early Calculation of Life Cycle Carbon Emissions and Fossil Energy Consumption

Joel TallaksenMichael Reese

Industry professionals and others have begun to consider the use of ammonia as a substitute for fossil energy in the fuel, fertilizer, and chemical sectors. Several factors are driving this concept; including, energy security concerns, the potential for economic development, and reducing the environmental consequences of fossil energy use. In terms of environmental concerns, it is important to determine the potential impacts of producing ammonia before a major switch to ammonia can be considered. This study examined fossil energy use and carbon emissions in the production of ammonia, using life cycle assessment (LCA) methods to analyze production at a novel…