Techno-economic analysis of gasification routes for ammonia production from Victorian brown coal

In comparison with 2013 ammonia prices, the cases were found to be similarly economically unviable. At a discount rate of 15%, the break-even prices achieved are in the order of 2.5 times the current prices, at A$1500/t-A$1600/t in most cases. While no overall benefit for a particular case was clear economically or technically, the use of certain technologies gave notable results. The low-pressure UGI gasifiers, after accounting for compression costs, gave an economic benefit over the high-pressure BGL gasifiers. The liquid nitrogen wash unit, when placed before the ammonia synthesis loop, recovered methane that is suitable for power generation.